Orban OPTIMOD 6300 Operating Manual

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Operating Manual

OPTIMOD

6300

Digital Multipurpose Audio Processor

Version 1.1 Software

Page 2

IMPORTANT NOTE: Refer to the unit’s rear panel for your Model Number.

Model Number: Description:

6300 OPTIMOD 6300 audio processor for digital audio

transmission channels. Digital I/O, Protection Structure, 2-band Structure with CBS Loudness Controller, 5-band Structure. 85-250V operation at 50-60 Hz via universal switching power supply. Switchable to flat, 50µs or 75µs preemphasis.

MANUAL:

Part Number: Description:

96119.110.03 6300 Operating Manual

CAUTION:

NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVER (OR BACK).

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK,

DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

This symbol, wherever it appears, alerts you to

the presence of uninsulated dangerous voltage

inside the enclosure  voltage that may be

sufficient to constitute a risk of shock.

This symbol, wherever it appears, alerts you to important

operating and maintenance instructions in the accompa-

nying literature. Read the manual.

In accordance to the WEEE (waste electrical and electronic equipment) directive of the European Parliament, this product must not be discarded into the municipal waste stream in any of the Member States. This product may be sent back to your Orban dealer at end of life where it will be reused or recycled at no cost to you.

If this product is discarded into an approved municipal WEEE collection site or turned over to an approved WEEE recycler at end of life, your Orban dealer must be notified and supplied with model, serial number and the name and location of site/facility.

Please contact your Orban dealer for further assistance.

www.orban.com

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IMPORTANT SAFETY INSTRUCTIONS

All the safety and operating instructions should be read before the appliance is operated.

Retain Instructions: The safety and operation instructions should be retained for future reference.

Heed Warnings: All warnings on the appliance and in the operating instructions should be adhered to.

Follow Instructions: All operation and user instructions should be followed.

Water and Moisture: The appliance should not be used near water (e.g., near a bathtub, washbowl, kitchen sink, laundry tub, in a wet base-

ment, or near a swimming pool, etc.).

Ventilation: The appliance should be situated so that its location or position does not interfere with its proper ventilation. For example, the appli-

ance should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings; or, placed in a built-in installation, such as a bookcase or cabinet that may impede the flow of air through the ventilation openings.

Heat: The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other appliances (including amplifiers)

that produce heat.

Power Sources: The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on

the appliance.

Grounding or Polarization: Precautions should be taken so that the grounding or polarization means of an appliance is not defeated.

Power-Cord Protection: Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or

against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the appliance.

Cleaning: The appliance should be cleaned only as recommended by the manufacturer.

Non-Use Periods: The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time.

Object and Liquid Entry: Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings.

Damage Requiring Service: The appliance should be serviced by qualified service personnel when: The power supply cord or the plug has

been damaged; or Objects have fallen, or liquid has been spilled into the appliance; or The appliance has been exposed to rain; or The appliance does not appear to operate normally or exhibits a marked change in performance; or The appliance has been dropped, or the enclosure damaged.

Servicing: The user should not attempt to service the appliance beyond that described in the operating instructions. All other servicing should be

referred to qualified service personnel.

The Appliance should be used only with a cart or stand that is recommended by the manufacturer.

Safety Instructions (European)

Notice For U.K. Customers If Your Unit Is Equipped With A Power Cord.

WARNING: THIS APPLIANCE MUST BE EARTHED.

The cores in the mains lead are coloured in accordance with the following code:

GREEN and YELLOW - Earth BLUE - Neutral BROWN - Live

As colours of the cores in the mains lead of this appliance may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows:

The core which is coloured green and yellow must be connected to the terminal in the plug marked with the letter E, or with the earth symbol, or coloured green, or green and yellow.

The core which is coloured blue must be connected to the terminal marked N or coloured black.

The core which is coloured brown must be connected to the terminal marked L or coloured red.

The power cord is terminated in a CEE7 / 7 plug (Continental Europe). The green / yellow wire is connected directly to the unit's chassis. If you need to change the plug and if you are qualified to do so, refer to the table below.

WARNING: If the ground is defeated, certain fault conditions in the unit or in the system to which it is connected can result in full line voltage between chassis and earth ground. Severe injury or death can then result if the chassis and earth ground are touched simultaneously.

Conductor WIRE COLOR

Normal Alt

L LIVE BROWN BLACK

N NEUTRAL BLUE WHITE

E EARTH GND GREEN-YELLOW GREEN

AC Power Cord Color Coding

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Safety Instructions (German)

Gerät nur an der am Leistungsschild vermerkten Spannung und Stromart betreiben. Sicherungen nur durch solche, gleicher Stromstärke und gleichen Abschaltverhaltens ersetzen. Sicherungen nie überbrücken. Jedwede Beschädigung des Netzkabels vermeiden. Netzkabel nicht knicken oder quetschen. Beim Abziehen des Netzkabels den Stecker und nicht das Kabel enfassen. Beschädigte Netzkabel sofort auswechseln. Gerät und Netzkabel keinen übertriebenen mechanischen Beaspruchungen aussetzen. Um Berührung gefährlicher elektrischer Spannungen zu vermeiden, darf das Gerät nicht geöffnet werden. Im Fall von Betriebsstörungen darf das Gerät nur Von befugten Servicestellen instandgesetzt werden. Im Gerät befinden sich keine, durch den Benutzer reparierbare Teile. Zur Vermeidung von elektrischen Schlägen und Feuer ist das Gerät vor Nässe zu schützen. Eindringen von Feuchtigkeit und Flüssigkeiten in das Gerät vermeiden. Bei Betriebsstörungen bzw. nach Eindringen von Flüssigkeiten oder anderen Gegenständen, das Gerät sofort vom Netz trennen und eine qualifizierte Servicestelle kontaktieren.

Safety Instructions (French)

On s'assurera toujours que la tension et la nature du courant utilisé correspondent bien à ceux indiqués sur la plaque de l'appareil. N'utiliser que des fusibles de même intensité et du même principe de mise hors circuit que les fusibles d'origine. Ne jamais shunter les fusibles. Eviter tout ce qui risque d'endommager le câble seceur. On ne devra ni le plier, ni l'aplatir. Lorsqu'on débranche l'appareil, tirer la fiche et non le câble. Si un câble est endommagé, le remplacer immédiatement. Ne jamais exposer l'appareil ou le câble ä une contrainte mécanique excessive. Pour éviter tout contact averc une tension électrique dangereuse, on n'oouvrira jamais l'appareil. En cas de dysfonctionnement, l'appareil ne peut être réparé que dans un atelier autorisé. Aucun élément de cet appareil ne peut être réparé par l'utilisateur. Pour éviter les risques de décharge électrique et d'incendie, protéger l'appareil de l'humidité. Eviter toute pénétration d'humidité ou fr liquide dans l'appareil. En cas de dysfonctionnement ou si un liquide ou tout autre objet a pénétré dans l'appareil couper aussitôt l'appareil de son alimentation et s'adresser à un point de service aprésvente autorisé.

Safety Instructions (Spanish)

Hacer funcionar el aparato sólo con la tensión y clase de corriente señaladas en la placa indicadora de características. Reemplazar los fusibles sólo por otros de la misma intensidad de corriente y sistema de desconexión. No poner nunca los fusibles en puente. Proteger el cable de alimentación contra toda clase de daños. No doblar o apretar el cable. Al desenchufar, asir el enchufe y no el cable. Sustituir inmediatamente cables dañados. No someter el aparato y el cable de alimentación a esfuerzo mecánico excesivo. Para evitar el contacto con tensiones eléctricas peligrosas, el aparato no debe abrirse. En caso de producirse fallos de funcionamiento, debe ser reparado sólo por talleres de servicio autorizados. En el aparato no se encuentra ninguna pieza que pudiera ser reparada por el usuario. Para evitar descargas eléctricas e incendios, el aparato debe protegerse contra la humedad, impidiendo que penetren ésta o líquidos en el mismo. En caso de producirse fallas de funcionamiento como consecuencia de la penetración de líquidos u otros objetos en el aparato, hay que desconectarlo inmediatamente de la red y ponerse en contacto con un taller de servicio autorizado.

Safety Instructions (Italian)

Far funzionare l'apparecchio solo con la tensione e il tipo di corrente indicati sulla targa riportante i dati sulle prestazioni. Sostituire i dispositivi di protezione (valvole, fusibili ecc.) solo con dispositivi aventi lo stesso amperaggio e lo stesso comportamento di interruzione. Non cavallottare mai i dispositivi di protezione. Evitare qualsiasi danno al cavo di collegamento alla rete. Non piegare o schiacciare il cavo. Per staccare il cavo, tirare la presa e mai il cavo. Sostituire subito i cavi danneggiati. Non esporre l'apparecchio e il cavo ad esagerate sollecitazioni meccaniche. Per evitare il contatto con le tensioni elettriche pericolose, l'apparecchio non deve venir aperto. In caso di anomalie di funzionamento l'apparecchio deve venir riparato solo da centri di servizio autorizzati. Nell'apparecchio non si trovano parti che possano essere riparate dall'utente. Per evitare scosse elettriche o incendi, l'apparecchio va protetto dall'umidità. Evitare che umidità o liquidi entrino nell'apparecchio. In caso di anomalie di funzionamento rispettivamente dopo la penetrazione di liquidi o oggetti nell'apparecchio, staccare immediatamente l'apparecchio dalla rete e contattare un centro di servizio qualificato.

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PLEASE READ BEFORE PROCEEDING!

Manual

The Operating Manual contains instructions to verify the proper operation of this unit and initialization of certain options. You will find these operations are most conveniently performed on the bench before you install the unit in the rack.

Please review the Manual, especially the installation section, before unpacking the unit.

Trial Period Precautions

If your unit has been provided on a trial basis:

You should observe the following precautions to avoid reconditioning charges in case you later wish to return the unit to your dealer.

(1) Note the packing technique and save all packing materials. It is not wise to ship in other than the factory carton. (Re-

placements cost $35.00).

(2) Avoid scratching the paint or plating. Set the unit on soft, clean surfaces.

(3) Do not cut the grounding pin from the line cord.

(4) Use care and proper tools in removing and tightening screws to avoid burring the heads.

(5) Use the nylon-washered rack screws supplied, if possible, to avoid damaging the panel. Support the unit when tighten-

ing the screws so that the threads do not scrape the paint inside the slotted holes.

Packing

When you pack the unit for shipping:

(1) Tighten all screws on any barrier strip(s) so the screws do not fall out from vibration. (2) Wrap the unit in its original plastic bag to avoid abrading the paint. (3) Seal the inner and outer cartons with tape.

If you are returning the unit permanently (for credit), be sure to enclose:

 The Manual(s)  The Registration / Warranty Card  The Line Cord  All Miscellaneous Hardware (including the Rack Screws and Keys)  The Extender Card (if applicable)  The Monitor Rolloff Filter(s) (OPTIMOD-AM only)  The COAX Connecting Cable (OPTIMOD 6300 and OPTIMOD 6300 only)

Your dealer may charge you for any missing items.

If you are returning a unit for repair, do not enclose any of the above items.

Further advice on proper packing and shipping is included in the Manual (see Table of Contents).

Trouble

If you have problems with installation or operation:

(1) Check everything you have done so far against the instructions in the Manual. The information contained therein is

based on our years of experience with OPTIMOD and broadcast stations.

(2) Check the other sections of the Manual (consult the Table of Contents and Index) to see if there might be some sug-

gestions regarding your problem.

(3) After reading the section on Factory Assistance, you may call Orban Customer Service for advice during normal Cali-

fornia business hours. The number is (1) 510 / 351-3500.

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This equipment generates, uses, and can radiate radio-frequency energy. If it is not installed and used as directed by this manual, it may cause interference to radio communication. This equipment complies with the limits for a Class A computing device, as specified by FCC Rules, Part 15, subject J, which are designed to provide reasonable protection against such interference when this type of equipment is operated in a commercial environment. Operation of this equipment in a residential area is likely to cause interference. If it does, the user will be required to eliminate the interference at the user’s expense.

This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the radio Interference Regulations of the Canadian Department of Communications. (Le present appareil numerique n’emet pas de bruits radioelectriques depassant les limites applicables aux appareils numeriques [de las class A] prescrites dans le Reglement sur le brouillage radioelectrique edicte par le ministere des Communications du Canada.)

Perform the installation under static control conditions. Simply walking across a rug can generate a static charge of 20,000 volts. This is the spark or shock you may have felt when touching a doorknob or some other conductive surface. A much smaller static discharge is likely to destroy one or more of the CMOS semiconductors employed in OPTIMOD 6300. Static damage will not be covered under warranty.

There are many common sources of static. Most involve some type of friction between two dissimilar materials. Some examples are combing your hair, sliding across a seat cover or rolling a cart across the floor. Since the threshold of human perception for a static discharge is 3000 volts, you will not even notice many damaging discharges.

Basic damage prevention consists of minimizing generation, discharging any accumulated static charge on your body or workstation, and preventing that discharge from being sent to or through an electronic component. You should use a static grounding strap (grounded through a protective resistor) and a static safe workbench with a conductive surface. This will prevent any buildup or damaging static.

WARNING

IMPORTANT

U.S. patents 4,208,548; 4,460,871; and U.K. patent 2,001,495. protect OPTIMOD 6300. Other patents pending.

Orban and Optimod are registered trademarks. All trademarks are property of their respective companies.

This manual is part number 96119.110.03. Published April 2009.

8350 East Evans Suite C4, Scottsdale, AZ 85260 USA

Phone: +1 480 403-8300; Fax: +1 480 403-8301; E-Mail: support@orban.com; Site: www.orban.com

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Operating Manual

OPTIMOD

6300

Digital Multipurpose Audio Processor

Version 1.1 Software

Page 8

Table of Contents

Index.........................................................................................................................0-7

Section 1 Introduction

.........................................................................................................................................1-1

ABOUT THIS MANUAL.......................................................................................................1-1

THE OPTIMOD 6300 DIGITAL AUDIO PROCESSOR..............................................................1-1

User-Friendly Interface............................................................................................1-2

Absolute Control of Peak Modulation...................................................................1-2

Flexible Configuration ............................................................................................1-2

Adaptability through Multiple Audio Processing Structures ...............................1-3

Controllable .............................................................................................................1-4

PRESETS IN OPTIMOD 6300 ............................................................................................1-5

Factory Presets .........................................................................................................1-5

User Presets..............................................................................................................1-6

INPUT/OUTPUT CONFIGURATION ........................................................................................1-6

Digital AES3 Left/Right Input/Outputs...................................................................1-6

Analog Left/Right Input/Output.............................................................................1-7

Remote Control Interface .......................................................................................1-8

Computer Interface .................................................................................................1-8

RS-232 Serial Port ............................................................................................................. 1-8

RJ45 Ethernet Connector ................................................................................................. 1-8

LOCATION OF OPTIMOD 6300 ........................................................................................1-9

At the transmitter is best ................................................................................................. 1-9

Where access to the transmitter is not possible ............................................................. 1-9

OPTIMOD 6300 at the transmitter: gain control before the STL ................................. 1-10

USING OPTIMOD 6300 AS A STUDIO LEVEL CONTROLLER .................................................1-10

STUDIO-TRANSMITTER LINK.............................................................................................1-12

Transmission from Studio to Transmitter.............................................................1-12

Digital links..................................................................................................................... 1-13

Microwave STLs .............................................................................................................. 1-14

Analog landline (PTT/post office line)........................................................................... 1-15

USING LOSSY DATA REDUCTION IN THE AUDIO CHAIN BEFORE THE 6300..............................1-15

INTERFACING TO THE TRANSMITTER ..................................................................................1-16

Sync Input ....................................................................................................................... 1-16

AES User Bits...................................................................................................................1-16

Sample Rate and Audio Bandwidth .............................................................................. 1-16

Subframe Delay .............................................................................................................. 1-17

ABOUT TRANSMISSION LEVELS AND METERING ..................................................................1-17

Meters ....................................................................................................................1-17

Figure 1-1: Absolute Peak Level, VU and PPM Reading ............................................... 1-18

Studio Line-up Levels and Headroom ..................................................................1-18

Transmission Levels................................................................................................1-19

LINE-UP FACILITIES .........................................................................................................1-19

Metering of Levels.................................................................................................1-19

Built-in Calibrated Line-up Tones.................................................................................. 1-19

Built-in Calibrated Bypass Test Mode............................................................................ 1-20

SETTING OUTPUT/MODULATION LEVELS............................................................................1-20

MONITORING ON LOUDSPEAKERS AND HEADPHONES..........................................................1-21

STREAMING AND NETCASTING APPLICATIONS.....................................................................1-21

Using OPTIMOD 6300 in Streaming Applications......................................................... 1-21

Page 9

Loudness.......................................................................................................................... 1-21

Choosing your Encoder ..................................................................................................1-22

EAS TEST......................................................................................................................1-22

PC CONTROL AND SECURITY PASSCODE.............................................................................1-23

WARRANTY, USER FEEDBACK...........................................................................................1-24

User Feedback........................................................................................................1-24

LIMITED WARRANTY .............................................................................................1-24

INTERNATIONAL WARRANTY...............................................................................1-24

EXTENDED WARRANTY ........................................................................................1-25

Section 2 Installation

.........................................................................................................................................2-1

INSTALLING THE 6300.......................................................................................................2-1

Figure 2-1: AC Line Cord Wire Standard).........................................................................2-2

Figure 2-2: Wiring the 25-pin Remote Interface Connector........................................... 2-3

6300 REAR PANEL ...........................................................................................................2-5

INPUT AND OUTPUT CONNECTIONS.....................................................................................2-5

Cable.........................................................................................................................2-5

Connectors ...............................................................................................................2-6

Analog Audio Input.................................................................................................2-6

Analog Audio Output .............................................................................................2-6

AES3 Digital Input and Output...............................................................................2-7

Wordclock / AES11id Sync Input .............................................................................2-8

Grounding................................................................................................................2-8

Power Ground..........................................................................................................2-8

Circuit Ground .........................................................................................................2-9

STUDIO LEVEL CONTROLLER INSTALLATION (OPTIONAL) .........................................................2-9

If you are using Orban 8200ST Studio Level Controller........................................2-9

Figure 2-3: 8200ST Jumper Settings (*Factory Configuration) .....................................2-10

QUICK SETUP.................................................................................................................2-12

ANALOG AND DIGITAL I/O SETUP.....................................................................................2-20

AUTOMATION USING THE 6300’S INTERNAL CLOCK............................................................2-29

SECURITY AND PASSCODE PROGRAMMING.........................................................................2-31

To Create a Passcode: ............................................................................................2-32

To Edit a Passcode:.................................................................................................2-32

To Delete a Passcode: ............................................................................................2-33

To Lock the Front Panel Immediately:..................................................................2-33

To Program local lockout: .....................................................................................2-33

To Unlock the Front Panel: ...................................................................................2-34

Dial-up Networking and the Passcode.................................................................2-34

If You Have Forgotten Your Passcode..................................................................2-34

REMOTE CONTROL INTERFACE PROGRAMMING ..................................................................2-35

NETWORKING AND REMOTE CONTROL..............................................................................2-36

SYNCHRONIZING OPTIMOD TO A NETWORK TIME SERVER....................................................2-38

Table 2-1: NIST-referenced timeservers .........................................................................2-39

INSTALLING 6300 PC REMOTE CONTROL SOFTWARE ..........................................................2-42

Installing the Necessary Windows Services..........................................................2-42

Check Hardware Requirements ............................................................................2-43

Running the Orban Installer Program..................................................................2-43

Setting Up Ethernet, LAN, and VPN Connections ...............................................2-44

Conclusion..............................................................................................................2-45

APPENDIX: SETTING UP SERIAL COMMUNICATIONS .............................................................2-47

Preparing for Communication through Null Modem Cable ..............................2-47

Page 10

Connecting Using Windows 2000 Direct Serial Connection:..............................2-47

Connecting Using Windows XP Direct Serial Connection ..................................2-52

Preparing for Communication through Modems ...............................................2-57

Connecting Using Windows 2000 Modem Connection ......................................2-57

Connecting using Windows XP Modem Connection ..........................................2-63

UPDATING YOUR 6300’S SOFTWARE.................................................................................2-68

Section 3 Operation

.........................................................................................................................................3-1

6300 FRONT PANEL .........................................................................................................3-1

INTRODUCTION TO PROCESSING..........................................................................................3-3

Some Audio Processing Concepts.................................................................................... 3-3

Distortion in Processing ................................................................................................... 3-3

Loudness and Distortion .................................................................................................. 3-3

Processing for Low Bit Rate Codecs................................................................................. 3-4

Speech/Music Detector..................................................................................................... 3-5

Optimod 6300 in Radio-Oriented Applications: From Bach to Rock ...................3-5

Sound-for-Picture Applications: Controlling Dynamic Range..............................3-6

ABOUT THE 6300’S SIGNAL PROCESSING FEATURES ..............................................................3-6

Signal Flow...............................................................................................................3-6

2-band Purist Processing .........................................................................................3-9

Input/output Delay................................................................................................3-10

CUSTOMIZING THE 6300’S SOUND ...................................................................................3-10

Basic Modify...........................................................................................................3-10

Full Modify .............................................................................................................3-11

Advanced Modify ..................................................................................................3-12

Gain Reduction Metering .....................................................................................3-12

To Create or Save a User Preset ............................................................................3-13

ABOUT THE PROCESSING STRUCTURES ...............................................................................3-14

FACTORY PROGRAMMING PRESETS ...................................................................................3-16

Protection and AGC Presets..................................................................................3-17

Table 3-1: Protection and AGC Presets.......................................................................... 3-18

Radio-Style Presets ................................................................................................3-19

Table 3-2: Radio-Style Presets ........................................................................................ 3-20

Sound-for-Picture Presets......................................................................................3-25

Table 3-3: Factory Programming Presets (Sound-for-picture)...................................... 3-25

EQUALIZER CONTROLS ....................................................................................................3-26

Table 3-4: 5-band Equalization Controls....................................................................... 3-27

STEREO ENHANCER CONTROLS .........................................................................................3-31

Table 3-5: Stereo Enhancer Controls ............................................................................. 3-32

AGC CONTROLS ............................................................................................................3-32

Table 3-6: AGC Controls................................................................................................. 3-33

Advanced AGC Controls........................................................................................3-36

DISTORTION CONTROL ....................................................................................................3-38

Figure 3-1: Bass Clipper Input/Output Transfer Curves as Bass Clip Shape Control is

Varied from 0.0 (Hard) to 10.0 (Soft) ............................................................................ 3-38

Table 3-7: Distortion Control Adjustments ................................................................... 3-39

THE 2-BAND STRUCTURE .................................................................................................3-40

Customizing the Settings ......................................................................................3-40

Table 3-8: 2-band Controls............................................................................................. 3-41

The 2-band Structure’s Full and Advanced Setup Controls................................3-41

Advanced 2-band Controls ...................................................................................3-45

Page 11

Figure 3-2: Output level in dB (y) for a given input level in dB (x) at various settings of

NEE and RATIO control ............................................................................................ 3-46

the K

THE 5-BAND STRUCTURE .................................................................................................3-47

Table 3-9: Multiband Controls .......................................................................................3-48

Putting the 5-band Structure on the Air .............................................................3-48

Customizing the Settings ......................................................................................3-48

The 5-band Structure’s Full and Advanced Setup Controls ................................3-49

Table 3-10: MB Band Mix Controls................................................................................. 3-49

Table 3-11: MB Attack / Release Controls...................................................................... 3-51

Advanced 5-band Controls ...................................................................................3-55

TEST MODES .................................................................................................................3-56

Table 3-12: Test Modes................................................................................................... 3-57

USING THE 6300 PC REMOTE CONTROL SOFTWARE ...........................................................3-57

To set up a new connection: .................................................................................3-58

To initiate communication: ...................................................................................3-58

To modify a control setting:..................................................................................3-59

To recall a preset:...................................................................................................3-59

To save a user preset you have created: ..............................................................3-60

To back up User Presets, system files, and automation files onto your computer’s

hard drive:..............................................................................................................3-60

To restore archived presets, system files, and automation files:........................3-61

To modify INPUT/OUTPUT and SYSTEM SETUP:............................................................3-62

To modify AUTOMATION: .........................................................................................3-62

To group multiple 6300s: ......................................................................................3-62

Navigation Using the Keyboard ...........................................................................3-63

To Quit the Program..............................................................................................3-63

About Aliases created by Optimod 6300 PC Remote Software .........................3-63

Multiple Installations of Optimod 6300 PC Remote ...........................................3-63

USING THE 6300 FOR PRODUCTION AND MASTERING .........................................................3-65

Section 4 Maintenance

.........................................................................................................................................4-1

ROUTINE MAINTENANCE ...................................................................................................4-1

SUBASSEMBLY REMOVAL AND REPLACEMENT.......................................................................4-2

FIELD AUDIT OF PERFORMANCE..........................................................................................4-6

Table 4-1: Typical Power Supply Voltages and AC Ripple ..............................................4-8

Section 5 Troubleshooting

.........................................................................................................................................5-1

PROBLEMS AND POTENTIAL SOLUTIONS...............................................................................5-1

RFI, Hum, Clicks, or Buzzes ............................................................................................... 5-1

Poor Peak Modulation Control ........................................................................................5-1

Audible Distortion ............................................................................................................5-1

Audible Noise....................................................................................................................5-2

Gain pumping when high frequency energy is present ................................................. 5-3

Shrill, Harsh Sound............................................................................................................ 5-3

Dull Sound......................................................................................................................... 5-3

Excessive Sibilance (“ess” sounds)....................................................................................5-4

Commercials Too Loud in Sound for Picture Applications .............................................5-4

System Will Not Pass Line-Up Tones at 100% Modulation............................................. 5-4

System Will Not Pass Emergency Alert System (“EAS” USA Standard) Tones at the

Page 12

Legally Required Modulation Level ................................................................................ 5-4

System Receiving 6300’s Digital Output Will Not Lock .................................................. 5-4

AES Channel Status Bits Will Not Set the 6300 to Stereo or Dual-Mono Mode............ 5-5

Equipment Receiving the 6300’s AES Output Changes Operation Mode Unexpectedly 55

General Dissatisfaction with Subjective Sound Quality.................................................. 5-5

Security Passcode Lost (When Unit is Locked Out) ......................................................... 5-5

Connection Issues between the 6300 and a PC, Modem, or Network ................5-5

Troubleshooting Connections.................................................................................5-6

You Cannot Access the Internet After Making a Direct or Modem Connection to

the 6300: ..................................................................................................................5-6

OS-SPECIFIC TROUBLESHOOTING ADVICE ............................................................................5-7

Troubleshooting Windows 2000 Direct Connect:..................................................5-7

Troubleshooting Windows 2000 Modem Connect:...............................................5-8

Troubleshooting Windows XP Direct Connect: .....................................................5-9

Troubleshooting Windows XP Modem Connect: ................................................5-10

TROUBLESHOOTING IC OPAMPS .......................................................................................5-11

TECHNICAL SUPPORT.......................................................................................................5-12

FACTORY SERVICE...........................................................................................................5-12

SHIPPING INSTRUCTIONS ..................................................................................................5-12

Section 6 Technical Data

.........................................................................................................................................6-1

SPECIFICATIONS................................................................................................................6-1

Performance.............................................................................................................6-1

Installation ...............................................................................................................6-2

CIRCUIT DESCRIPTION .......................................................................................................6-4

Overview ..................................................................................................................6-5

Control Circuits ........................................................................................................6-5

User Control Interface and LCD Display Circuits ...................................................6-6

Input Circuits............................................................................................................6-7

Output Circuits.........................................................................................................6-9

DSP Circuit..............................................................................................................6-10

Power Supply .........................................................................................................6-10

ABBREVIATIONS .............................................................................................................6-11

PARTS LIST ....................................................................................................................6-13

Obtaining Spare Parts ...........................................................................................6-13

Control Board ........................................................................................................6-13

Combined Input/Output and DSP (I/O+DSP) Board ............................................6-15

Display Board (Front) ............................................................................................6-18

Display Board (Back)..............................................................................................6-19

SCHEMATICS AND PARTS LOCATOR DRAWINGS...................................................................6-19

Page 13

Function Description Drawing Page

Chassis

Control board

I/O+DSP Board

Display Board

DSP Block

Diagram

Circuit Board Locator and Basic Interconnections Control microprocessor. Services front panel, serial port, Ethernet,

Top view (not to scale) Parts Locator Drawing

6-21

6-22

and DSP+I/O board.

Contains:

General Purpose bus, address de-

Schematic 1 of 5

6-23

coder, DSP, and I/O interface Memory and clock generation Schematic 2 of 5

Ethernet Schematic 3 of 5 Miscellaneous input/output Schematic 4 of 5 Power and Ground Schematic 5 of 5

Analog Input/output AES3 Input/output

Parts Locator Drawing

6-24 6-25 6-26 6-27

6-28

DSP Chips; Local regulators.

Contains:

L and R Analog Inputs Schematic 1 of 9 6-29 L and R Analog Outputs Schematic 2 of 9 6-30 Digital Input and Sync Input Schematic 3 of 9 6-31 Digital Outputs Schematic 4 of 9 6-32 DSP Extended Serial Audio Inter-

Schematic 5 of 9 6-33 face (ESAI) and Host Interface DSP Serial Peripheral Interface,

Schematic 6 of 9 6-34 Power, and Ground General Purpose bus 8-bit I/O Schematic 7 of 9 6-35 Serial Audio Interface and Clock

Schematic 8 of 9 6-36 Generation Power Distribution Schematic 9 of 9 6-37

Front-Panel LCD, LEDs, Buttons, and Rotary Encoder

Parts Locator

Drawing

6-38

Contains:

Front of board Schematic 1 of 2 6-39 Rear of board 6-40 Shows signal processing 6-41

Index

8200ST 2- · 9

A/D converter

circuit description 5- · 8 specification 6- · 2

Abbreviations 6- · 11 AC Line Cord Standard 2- · 2 Advanced Modify 3- · 12 AES channel status bits 5- · 5 AES/EBU I/O 2- · 7 AES11 sync 2- · 25 AES3 status bits 2- · 18

Page 14

AGC

bass attack control 3- · 37 bass coupling control 3- · 35 bass release control 3- · 37 bass threshold control 3- · 36 control list 3- · 32 crossover control 3- · 37 defeating 3- · 33 defeating 3- · 21 drive control 3- · 33 external AGC setup 2- · 9 gate threshold control 3- · 34 idle gain control 3- · 36 master attack control 3- · 37 master release control 3- · 34 meter 3- · 2 ratio control 3- · 36 using 6300 as 3- · 17 window release control 3- · 36 window size control 3- · 36

AGC 3- · 7 AGC Matrix 3- · 37 allpass crossover 3- · 37 analog I/O 1- · 7 analog input

circuit description 6- · 7 ref level, I/O setup 2- · 21

analog input 2- · 6 analog landline 1- · 15 analog output

circuit description 6- · 9

analog output 2- · 6 archiving presets 3- · 60 artifacts

minimizing codec 3- · 4

Attack

Multiband 3- · 55

attack 3- · 37 audio

bandwidth 1- · 16 connections 2- · 5 input, connecting 2- · 6 output 2- · 7 output, connecting 2- · 6

Audio Precision 4- · 6 auditing performance 4- · 6 automation

add event 2- · 30 delete event 2- · 31 edit event 2- · 31

automation 2- · 29 automation 3- · 62

B5 down expand 3- · 53 backing up presets 3- · 60 balance adjust 2- · 22 balanced

inputs 2- · 6 output, simulates transformer 2- · 6

band coupling 3- · 53 bandwidth 2- · 13, 20 base board

removing 4- · 2 replacing 4- · 4

Basic Modify 3- · 10 BASS CLIP control 3- · 38 bass threshold 3- · 36 battery

replacing 6- · 6

bit depth of internal processing 6- · 1 block diagram 6- · 41 breakpoint 3- · 46 Brilliance control 3- · 30 buttons

escape 3- · 2 modify 3- · 1 NEXT 3- · 1 PREVIOUS 3- · 1 RECALL 3- · 1 setup 3- · 1

buzz 5- · 1 bypass

local 1- · 22 PC remote 1- · 23 remote interface 1- · 23 test mode 1- · 20

cable

shielding 2- · 8 type recommended for analog I/O 2- · 5

chassis

getting inside 4 · 2 ground 2- · 8

circuit board locator drawing 6- · 21 circuit description

control 6- · 5 LCD display 6- · 6 user control interface 6- · 6

circuit description 6- · 4

Page 15

Classical music 3- · 21 cleaning front panel 4- · 1 clipper

control list 3- · 38

clipper, bass 3- · 8 clipping 3- · 3 clock

battery 6- · 6 setting 2- · 29

codec

overshoots in 3- · 70 processing for low bit rate 3- · 4

commercial loudness 5- · 4 common-mode rejection 2- · 8 components

obtaining 6- · 13

compression 3- · 3 compression ratio 3- · 45 compressor gate 3- · 34 computer

connecting to 2- · 4 interface, specifications 6- · 3 troubleshooting connections 5- · 6 Windows 2000 5- · 7 Windows XP 5- · 9

computer interface

RS-232 2- · 5 serial 2- · 5

computer interface 1- · 8

connecting

through Win XP direct serial 2- · 52

connection to PC

troubleshooting 5- · 5

connectors

audio 2- · 5 input and output 2- · 6

contrast control 3- · 1 control knob 3- · 1 controls

BASS CLIP 3- · 38 breakpoint 3- · 46 compression ratio 3- · 45 contrast 3- · 1 description 3- · 1 Final Limit 3- · 39 knee 3- · 46 LO PASS 3- · 31 MAX LPF 2- · 13, 20 soft buttons 3- · 1 SYNC DELAY 2- · 20

corrosion 4- · 1 coupling controls 3- · 53

crossover

allpass 3- · 37 linear phase 3- · 38 modes 3- · 37

crossover Ethernet cable 5- · 6

D/A converter

circuit description 6- · 9 specification 6- · 2

delay

setting processing 2- · 20

delay 3- · 10 Delay 6- · 2 delta release control 3- · 55 DHCP server 5- · 6 digital I/O 1- · 6 digital input

circuit description 6- · 8

digital links 1- · 13 digital output

circuit description 6- · 10

display assembly

removing 4 · 2

display board

parts list 6- · 18, 19

Display mode 2- · 20 distortion

excessive 5- · 5 testing 4- · 9 troubleshooting 5- · 1 vs. loudness 3- · 3

dither 2- · 26 DJ Bass control 3- · 30 downward expander 3- · 52 DSP

block diagram 6- · 41 circuit description 6- · 10

DSP board

replacing 4- · 4

dual-mono 2- · 18, 35 dual-mono 6- · 2 dull sound

troubleshooting 5- · 3

EAS

modulation low 5- · 4

Page 16

test tones 1- · 22

easy setup 2- · 12 equalizer

bass shelf 3- · 27 control list 3- · 26, 65 parametric 3- · 28

equalizer 3- · 8 escape button 3- · 2 Ethernet 2- · 36, 44, 58 external AGC mode 2- · 13 external sync

setting source 2- · 25

factory presets

radio 3- · 19 selecting 2- · 18 tv 3- · 25

factory presets 1- · 5 factory service 5- · 12 Final Limit control 3- · 39 Firewall 2- · 44, 58 Firmware

updating 8500 2- · 68

five-band

attack time controls 3- · 55 band coupling controls 3- · 53 delta release control 3- · 55 downward expander thresold control 3- · 52 full modify control list 3- · 49 limiter attack control 3- · 55 multiband drive control 3- · 49 multiband gate threshold control 3- · 52 mutiband release control 3- · 50 output mix controls 3- · 54

five-band 3- · 47 frequency response

specification 6- · 1 testing 4- · 9

front panel 3- · 1 Full Modify 3- · 11 fuse 6- · 10

gain reduction

meters 3- · 2

gate

threshold control 3- · 52

gate 3- · 34 gate LED 3- · 2 Gateway 2- · 44, 58 gateway address 2- · 37 getting inside the unit 4 · 2 GPI

specifications 6- · 3

GPI interface

testing 4- · 11

ground

chassis 2- · 9

grounding

circuit 2- · 9 loss of 4- · 1 power 2- · 8

grounding 2- · 8 grouping 6300s 3- · 62

Hard Clip Shape 3- · 39 headphones

low-delay monitoring 2- · 14, 24, 26

headphones 1- · 21 headroom

in codecs 1- · 13, 20 relationship to EQ 1- · 20

HF enhancer 3- · 8 High Frequency Enhancer 3- · 31 high frequency limiter 3- · 54 high-pass filter

30 Hz 3- · 7

Highpass Filter 3- · 31 hum 5- · 1

I/O

AES/EBU 2- · 7 connections 2- · 2

I/O board

replacing 4- · 4

IC opamps

troubleshooting 5- · 11

idle gain 3- · 36 input

analog, connecting 2- · 6 analog, specifications 6- · 2 digital, specifications 6- · 2

input level

Page 17

line-up 1- · 18

input meters 1- · 19 input meters 3- · 2 input selector

I/O setup 2- · 21

input/output board

removing 4- · 3

inspection of package contents 2- · 1 installation procedure 2- · 1 Instrumental format 3- · 22 Internet

cannot access 5- · 6

IP address 2- · 36 IP port 2- · 37

J.17

and 6300 digital I/O 1- · 7 deemphasis applied to digital audio input 6-

· 3 defined 1- · 7 preemphasis applied to digital audio output

6- · 3

Jazz format 3- · 23

knee control 3- · 46

line-up tones

system will not pass at 100% modulation 5- ·

line-up tones 1- · 19 Lo Pass control 3- · 31 location 1- · 9 lock

driven equipment cannot lock to 6300 output

5- · 4

lockout

immediate 2- · 33 programming local 2- · 33 unlocking front panel 2- · 34

look-ahead limiter

XE "presets:AGC 3-" XE "presets:protection

3-" using 6300 as 3- · 17

look-ahead limiter 3- · 9 look-ahead limiting 3- · 3 lossy data reduction

in studio 1- · 15

loudness

insufficient 5- · 5 insufficient due to poor peak control 5- · 1 vs. distortion 3- · 3

Loudness

increase expected 1- · 21

Loudness Controller

and 5-Band · 48 threshold control 3- · 43

Loudness Controller 1- · 4 Loudness Controller 3- · 8, 16 loudness controller 5- · 4 Loudness Controller 5- · 48

latency 3- · 10 LEDs

gate 3- · 2

Less-More

index 3- · 45

Less-More 3- · 33 level

metering 1- · 19 setup 2- · 14 transmission 1- · 19

limiter

attack 3- · 55

limiting

look-ahead 3- · 3, 9

limiting 3- · 3 line voltage 2- · 2 linear-phase crossover 3- · 38

main board

reattaching 4 · 4

mastering

setting output level 3- · 70

mastering applications 3- · 65 mastering presets 3- · 66 Matrix

AGC 3- · 37

Max Delta GR

AGC 3- · 37

measuring performance 4- · 6 meter

circuit description 6- · 6 gain reduction 3- · 12

Page 18

meters

AGC 3- · 2 circuit description 6- · 6 gain reduction 3- · 2 input 3- · 2 studio 1- · 17

Mod Reduction control 2- · 35 Mode>Out 2- · 19 modem

preparing for connection 2- · 57 recommended baud rate 2- · 58 setting up 2- · 37 specification for 2- · 43 Windows 2000 configuration 2- · 57 Windows XP configuration 2- · 63

modify button 3- · 1 modulation

switching 1- · 20

modulation control

troubleshooting poor 5- · 1

monitoring 1- · 21 MP3 1- · 22 multiband drive 3- · 49 multimeters 2- · 2 music/speech detector 3- · 5

NAB Broadcast and Audio System Test CD

4- · 6

netcasting applications

encoder 1- · 22

netcasting applications 1- · 21 network

timeserver 2- · 38

networking 2- · 36 News format 3- · 23 NEXT button 3- · 1 NICAM 1- · 14 noise

specification 6- · 1 troubleshooting 5- · 2

null modem cable

communicating through 2- · 47

null modem cable 2- · 43

OPTIMOD-6300 1- · 1 output

analog output level trim adjustment 4- · 8 analog, connecting 2- · 6 analog, specifications 6- · 2 digital, setting dither 2- · 26 digital, setting sample rate 2- · 26 digital, setting sync 2- · 26 digital, setting word length · 26 digital, specifications 6- · 3 headphone monitoring, setup 2- · 14, 24, 26

output level

I/O setup 2- · 24, 25 quick setup 2- · 17

output mix controls 3- · 54 overshoot

excessive 5- · 1

parametric equalizer 3- · 8 parent preset 3- · 45 parts

obtaining 6- · 13

parts list

base board 6- · 13 display board 6- · 18, 19 I/O board 6- · 15

parts list 6- · 13 passcode

and dial-up networking 2- · 34 creating 2- · 32 deleting 2- · 33 editing 2- · 32 programming 2- · 31 recovering from lost 2- · 34

Orban installer program 2- · 43

PC board locator diagram 6- · 21 PC control

security 1- · 23

PC hardware requirements 2- · 43 PC Remote

aliases 3- · 63 moving alias folders 3- · 64 multiple coexisting versions 3- · 63 upgrading versions 3- · 63

PC Remote Software 3- · 57 performance

measuring 4- · 6

phase rotator 3- · 7 Phase Rotator 3- · 31 phase-linear

Page 19

two-band purist processing 3- · 9

port, IP 2- · 37 Ports 2- · 44, 58 power

cord 2- · 2, 5

power supply

circuit description 6- · 10 Orban part # 6- · 11 testing 4- · 8

power supply board

reattaching 4 · 4

Precode 3- · 4 pre-emphasis

quick setup 2- · 23

preset

restoring archived 3- · 61

presets

AGC 3- · 17 backup 3- · 60 country 3- · 21 customizing 3- · 10 dance 3- · 22 factory 1- · 5 factory programming 3- · 16 five-band 3- · 14 folk 3- · 22 gold 3- · 22 oldies 3- · 22 protection 3- · 17 radio 3- · 19 saving user 3- · 6, 13 smooth jazz 3- · 24 techno 3- · 22 two-band 3- · 15 user presets 1- · 6 video 3- · 25

Presets

Gregg 3- · 22 Impact 3- · 22 Instrumental 3- · 22 Jazz 3- · 23 Loud 3- · 23 News-Talk 3- · 23 Rock 3- · 24 Sports 3- · 23 Urban 3- · 25

PREVIOUS button 3- · 1 processing

AGC 3- · 7 block diagram 6- · 41 distortion in 3- · 3 equalization 3- · 8 introduction to 3- · 3

multiband compression 3- · 8 music/speech 3- · 5 radio-style 3 · 5 signal flow 3- · 6 Stereo enhancement 3- · 7 structures 1- · 3 structures 3- · 14 two-band purist 30 · 9 video oriented 3- · 6

processing structures

two-band 3- · 25

Proof of Performance 1- · 5 Proof of Performance 3- · 56

quick setup 2- · 12

rack-mounting unit 2- · 2 ratio

AGC 3- · 36 compression 3- · 45 control 3- · 8

rear panel 2- · 5 RECALL button 3- · 1 registration card 2- · 1 remote

PC Remote software 3- · 57

remote control

bypass 1- · 23 connecting 2- · 3 GPI, specifications 6- · 3 wiring 2- · 3

remote control 2- · 5 remote interface

functions controllable by 2- · 35 GPI 1- · 8 programming GPI 2- · 35 testing 4- · 11 wiring 2- · 3

remote interface connector 2- · 5 resolution

specification 6- · 1

RFI 5- · 1 right channel balance

I/O setup 2- · 22

RJ45 jack 2- · 37 Rock format 3- · 24

Page 20

routine maintenance 4- · 1 RS232

testing 4- · 11

RS-232 connector 2- · 5 RS-232 interface

circuit description 6- · 6

Rumble Filter 3- · 31

sample rate

at digital output 6- · 3 internal, specification 6- · 1 setting output 2- · 16

sample rate 1- · 16 sample rate converter

testing 4- · 10

saving user presets 3- · 6, 13 screen display 3- · 1 screens

System Setup 2- · 12

Security

lock immediately 2- · 33

security 1- · 23 security 2- · 31 Serial Communications

setting up 2- · 47

serial connection

setting up direct 2- · 38

serial connector 2- · 5 service 5- · 12 setup

I/O 2- · 20 quick 2- · 12

setup button 3- · 1 shelving equalizer

bass, slope of 3- · 8

shipping instructions 5- · 12 Show date 2- · 20 shrill sound

troubleshooting 5- · 3

Sibilance 5- · 4 signal flow diagram 6- · 41 smooth jazz 3- · 24 soft buttons 3- · 1 Software

updating 8500 2- · 68

software updates 1- · 5 Sound Technology 4- · 6 sound-for-picture

processing 3- · 6

spare parts

obtaining 6- · 13

specifications 6- · 1 speech/music detector 3- · 5 Sports format 3- · 23 station ID

setting 2- · 18

Status bits, AES3 2- · 18 stereo

control by status bits 2- · 18

stereo enhancement 3- · 7 Stereo enhancer

Controls 3- · 31

Stereo Enhancer

Amount 3- · 32 Depth 3- · 32 Diffusion 3- · 32 In/Out 3- · 32 Ratio Limit 3- · 32 Style 3- · 32

STL

compatibility with 32 kHz sample rate 2- · 7 overshoot in uncomressed digital 2- · 7 systems 1- · 12

STL systems 1- · 10, 12, 14 streaming media 1- · 21 studio AGC

preset 3- · 17

studio-transmitter link 1- · 12 subassembly removal and replacement 4- ·

2 subframe delay 1- · 17 subnet mask 2- · 37 sync

setting source 2- · 25

sync delay 2- · 20 Sync input 1- · 16 system setup

quick setup 2- · 12

System Setup screen 2- · 12

Talk format 3- · 23 TCP/IP

setting parameters 2- · 36

technical support 5- · 12 telephone support 5- · 12 test modes 3- · 56

Page 21

test tone

frequencies 2- · 26

Threshold

Bass Delta 3- · 37 Master Delta 3- · 37 Multiband Compression 3- · 50

time

daylight saving 2- · 13 summer 2- · 13

time & date 2- · 12 timeserver 2- · 38 top cover

reattaching 4 · 5 removing 4 · 2

Transmitter

interfacing to 1- · 16

troubleshooting

installation 5- · 1

tv presets 3- · 25 two-band

bass attack control 3- · 45 bass coupling control 3- · 43 bass threshold control 3- · 45 crossover control 3- · 47 drive control 3- · 41 full modify controls 3- · 41 gate control 3- · 43 master attack control 3- · 45 master compression threshold 3- · 45 release control 3- · 42

two-band processing structure 3- · 25 two-band structure 3- · 40

unlock front panel 2- · 34 unpacking 2- · 1 Updating software 2- · 68 Urban format 3- · 25 user presets

archiving 3- · 14

creating 3- · 6, 11, 13

user presets 1- · 6

VPN, setting up 2- · 44, 58

warranty 1- · 24 Warranty 1- · 24 warranty 6- · 4 window

release control 3- · 36 window size control 3- · 36

Windows

installing services 2- · 42

Windows 2000

adding direct serial connection 2- · 48, 52,

58, 64 Direct Connect 5- · 7 direct serial connection 2- · 47 modem connect 5- · 8 modem connection 2- · 57

Windows XP

direct connect 5- · 9 modem configuration 2- · 63 modem connect 5- · 10

women

processing for 3- · 4

word length

at output, specification 6- · 3 setting output 2- · 26

wordclock 2- · 8, 25

XLR connector

wiring standard 2- · 7

Page 22

Page 23

OPTIMOD 6300 DIGITAL INTRODUCTION

Section 1

Introduction

About this Manual

The Adobe pdf form of this manual contains numerous hyperlinks and bookmarks. A reference to a numbered step or a page number (except in the Index) is a live hyperlink; click on it to go immediately to that reference.

If the bookmarks are not visible, click the “Bookmarks” tab on the left side of the Acrobat Reader window.

1-1

This manual has a table of contents and index. To search for a specific word or phrase, you can also use the Adobe Acrobat Reader’s text search function.

The OPTIMOD 6300 Digital Audio Processor

Orban’s all-digital Optimod 6300 Audio Processor can help you achieve the highest possible quality digital audio broadcast, digital television, and netcast audio processing. Thanks to versatile signal routing, the 6300 can also serve as a studio AGC with an all-digital signal path, and simultaneously as a talent headphone processor.

Because all processing is performed by high-speed mathematical calculations within Motorola DSP56367 Digital Signal Processing chips, the processing has cleanliness, quality, and stability over time and temperature that is unmatched by analog processors.

OPTIMOD 6300 is descended from the industry-standard OPTIMOD audio processors for radio and television. Thousands of these broadcast-specific processors are attracting and holding audiences all over the world. They have proven that the “OPTIMOD sound” can attract and keep an audience even in the most competitive commercial environment.

Because OPTIMOD 6300 incorporates several audio processing innovations exclusive to Orban products, you should not assume that it can be operated in the same way as less sophisticated processors. If you do, you may get disappointing results.

Take a little time now to familiarize yourself with OPTIMOD 6300. A small investment of your time now will yield large dividends in audio quality.

Page 24

1-2

INTRODUCTION ORBAN MODEL 6300

The rest of Chapter 1 explains how OPTIMOD 6300 fits into the DAB and DTV broadcast plants and how to use it for netcasting. Chapter 2 explains how to install it. Chapter 3 explains how to operate OPTIMOD 6300. Chapters 4 through 6 provide reference information.

OPTIMOD 6300 was designed to deliver a high quality sound while simultaneously increasing the average modulation of the channel substantially beyond that achievable by “recording studio”-style compressors and limiters. Because such processing can exaggerate flaws in the source material, it is very important that the source audio be as clean as possible.

For best results, feed OPTIMOD 6300 unprocessed audio. No other audio processing is necessary or desirable.

If you wish to place level protection prior to your studio/transmitter link (STL), use OPTIMOD-PC 1100V2 or another 6300. Either of these can substitute for the broadband AGC circuitry in OPTIMOD 6300, which is then defeated.

User-Friendly Interface

 An LCD and full-time LED meters make setup, adjustment and programming

of OPTIMOD 6300 easy—you can always see the metering while you are adjusting the processor. Navigation is by dedicated buttons, soft buttons (whose function is context-sensitive), and a large rotary knob. The LEDs show all metering functions of the processing structure (2-band or 5-band) in use.

 Push one of the dedicated buttons to “Recall” a preset, to “Modify” processing,

or to access the system’s Setup controls.

Absolute Control of Peak Modulation

 The 6300 precisely controls peak levels to prevent overmodulation. The

maximum level of the digital samples is controlled to better than 2%.

 While primarily oriented toward “flat” media, the 6300 can also provide

preemphasis limiting for the two standard preemphasis curves of 50s and

75s. This allows it to protect pre-emphasized microwave links, satellite uplinks and similar channels where protection limiting or light processing is required.

Because its processing is configured to be most effective with “flat media,” the 6300 cannot provide extreme loudness for pre-emphasized radio channels. Use one of Orban’s Optimod-FM processors for this application. For analog television with FM aural carrier(s), use Optimod-TV 8382.

Flexible Configuration

 The 6300 includes analog and dual AES3 digital inputs and outputs. The digi-

tal input and digital outputs have sample-rate converters and can operate at 32

Page 25

OPTIMOD 6300 DIGITAL INTRODUCTION

kHz, 44.1 kHz, 48, 88.2, and 96 kHz sample rates. The preemphasis status and output levels are separately adjustable for the analog and digital outputs.

Note that the 6300 cannot provide simultaneous, independent audio processing for flat and preemphasized channels. Even though one output may be pre-emphasized while other is flat, the only difference between the outputs is that the “flat” output has de-emphasis applied to it after the processing while the preemphasized output does not.

 OPTIMOD 6300’s outputs can be independently configured to emit the output of

the AGC or the output of the multiband compressor/limiter, all configurable to use or bypass look-ahead limiting. So a 6300 can be configured to drive an

STL with a peak-limited output from the AGC while also providing a fully processed digital radio/netcast feed and a low delay, multiband compressed talent headphone feed.

 OPTIMOD 6300 controls the audio bandwidth as necessary to accommodate

the transmitted sample frequency. OPTIMOD 6300’s high frequency bandwidth can be switched instantly (typically in 1 kHz increments) between 10 kHz and 20 kHz. 20 kHz is used for highest-quality systems. 15 kHz meets the requirements of any system that uses 32 kHz sample frequency, while 10 kHz is appropriate for 24 kHz sample frequency.

1-3

 The 6300’s dual-mono mode allows entirely separate mono programs to be

processed, facilitating dual-language operation.

In this mode, both processing channels operate using the same processing parameters (like release time); you cannot adjust the two channels to provide different processing textures.

 The analog inputs are transformerless, balanced 10k instrumentation-

amplifier circuits and the analog outputs are transformerless, balanced, and

floating (with 50 impedance) to ensure highest transparency and accurate pulse response.

 All input, output, and power connections are rigorously RFI-suppressed to

Orban’s traditional exacting standards, ensuring trouble-free installation.

 The 6300 is designed and certified to meet all applicable international

safety and emissions standards.

Adaptability through Multiple Audio Processing Structures

 A processing structure is a program that operates as a complete audio proc-

essing system. Only one processing structure can be active at a time. OPTIMOD 6300 realizes its processing structures as a series of high-speed mathematical computations made by Digital Signal Processing (DSP) chips.

Page 26

1-4

INTRODUCTION ORBAN MODEL 6300

 The 6300 features two processing structures: 5-band for a spectrally consistent

sound with good loudness control, and 2-band for a transparent sound that preserves the frequency balance of the original program material while also effectively controlling subjective loudness.

 Orban’s PreCode™ technology manipulates several aspects of the audio to

minimize artifacts caused by low bitrate codecs, ensuring consistent loudness and texture from one source to the next. PreCode includes special audio band detection algorithms that are energy and spectrum aware. This can improve codec performance on some codecs by reducing audio processing induced codec artifacts, even with program material that has been preprocessed or mastered by other processing than Optimod. There are several factory presets tuned specifically for low bitrate codecs. These presets have “LBR” in their names.

 A special 2-band preset creates a no-compromise “Protect” function that is func-

tionally similar to the “Protect” structures in earlier Orban digital processors. The 5-band and the 2-band structures can be switched via a mute-free crossfade.

 OPTIMOD 6300’s 2-band structure includes a CBS Loudness Controller™ for

DTV applications. This system measures subjective loudness (as perceived by an average listener) and then closes a feedback loop to limit loudness to a preset level. It effectively controls loud commercials, which are the primary irritant in sound-for-picture applications.

The CBS Loudness Controller is not needed with the 5-band processing because the 5-band processing’s spectral consistency creates consistent loudness as a desirable byproduct.

 The 6300’s AGC rides gain over an adjustable range of up to 25dB, compressing

dynamic range and compensating for both operator gain-riding errors and gain inconsistencies in automated systems. The AGC output is available to drive STLs, so the 6300 can be used as a studio AGC.

 The 6300’s processing structures are all phase-linear to maximize audible trans-

parency.

 The 6300’s equalizers and crossovers use 48-bit arithmetic to ensure mastering-

quality noise and distortion performance.

Controllable

 The 6300 can be remote-controlled by 5-12V pulses applied to eight pro-

grammable, optically isolated “general-purpose interface” (GPI) ports.

 6300 PC Remote software is a graphical application that runs under Windows

2000 and XP. It communicates with a given 6300 via TCP/IP over modem, direct serial, and Ethernet connections. You can configure PC Remote to switch between many 6300s via a convenient organizer that supports giving any 6300 an

Page 27

OPTIMOD 6300 DIGITAL INTRODUCTION

alias and supports grouping multiple 6300s into folders. Clicking a 6300’s icon causes PC Remote to connect to that 6300 through an Ethernet network or initiates a Windows Dial-Up or Direct Cable Connection if appropriate. The PC Remote software allows the user to access all 6300 features (including advanced controls not available from the 6300’s front panel) and allows the user to archive and restore presets, automation lists, and system setups (containing I/O levels, digital word lengths, GPI functional assignments, etc.).

 The 6300 contains a versatile real-time clock, which allows automation of vari-

ous events (including recalling presets) at pre-programmed times. To ensure accuracy, the clock can be synchronized to an Internet timeserver.

 Silence alarm and digital audio fault tally outputs are available.

 A Bypass Test Mode can be invoked locally, by remote control (from either the

6300’s GPI port or the 6300 PC Remote application), or by automation to permit broadcast system test and alignment or “proof of performance” tests.

 The 6300 contains a built-in line-up tone generator, facilitating quick and ac-

curate level setting in any system.

1-5

 The 6300’s software can be upgraded by running Orban-supplied download-

able upgrade software on a PC. The upgrade can occur remotely through the 6300’s Ethernet port or serial port (connected to an external modem), or locally (by connecting a Windows® computer to the 6300’s serial port through the supplied null modem cable).

Presets in OPTIMOD 6300

There are two distinct kinds of presets in OPTIMOD 6300: factory presets and user presets.

Factory Presets

The Factory Presets are our “factory recommended settings” for various program formats or types. There are multiple Factory Presets for both radio-oriented and video oriented programming. Each Factory Preset on the Preset list is really a library of more than 20 separate presets, selected by navigating to M LESS-MORE and using the LESS-MORE control to adjust OPTIMOD 6300 for less or more processing. The factory presets are listed and described starting on page 3-15. The description indicates the processing structure and the type of processing.

ODIFY PROCESSING >

Factory erased. You can change the settings of a Factory Preset, but you must then store those settings as a User Preset, which you are free to name as you wish. The Factory Preset remains unchanged.

Presets are stored in OPTIMOD 6300’s non-volatile memory and cannot be

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INTRODUCTION ORBAN MODEL 6300

User Presets

User Presets permit you to change a Factory Preset to suit your requirements and then store those changes.

You can store more than 100 User Presets, limited only by available memory in your 6300 (which will vary depending on the version of your 6300’s software). You can give your preset a name up to 18 characters long.

User Presets cannot be created from scratch. You must always start by recalling a Factory Preset. Make the changes, and then store your modified preset as a User Preset. You can also recall a previously created user preset, modify it, and save it again, either overwriting the old version or saving under a new name. In all cases, the original Factory Preset remains for you to return to if you wish.

User Presets inherit the structure of their parent Factory Presets (5-band or 2-band). The only way you can choose the structure of a factory preset is to edit it from a Factory preset having that structure (or to edit it from an older User Preset having the desired structure). You cannot change the structure that an existing User Preset uses.

User Presets are stored in non-volatile memory that does not require battery backup. To Create or Save a User Preset on page 3-13 has more about User Presets.

Input/Output Configuration

OPTIMOD 6300 simultaneously accommodates:

 Digital AES3 left/right inputs and dual outputs.

 Analog left/right inputs and outputs.

OPTIMOD 6300 can be operated in either stereo or dual-mono mode. In dual-mono mode, processing parameters that determine the “sound” of the processor are the same on both channels.

Dual-mono or stereo mode is a global system parameter. You can change modes manually, via the 6300’s GPI inputs, via 6300 PC Remote software, or via the 6300’s built-in time-of-day automation. Further, the 6300 can be programmed to recognize the “stereo” and “dual-mono” flags in the AES input bitstream and to switch modes accordingly. It will also set these flags appropriately in its output AES bitstream.

Digital AES3 Left/Right Input/Outputs

The digital input and outputs conform to the professional AES3 standard. They all have sample rate converters to allow operation at 32, 44.1, 48, 88.2, and 96 kHz sample frequency.

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To ensure best control of peak modulation, operate the output at 48 kHz or higher.

The left/right digital input is on one XLR-type female connector on the rear panel; the left/right digital outputs are on two XLR-type male connector on the rear panel.

You select whether OPTIMOD 6300 uses the digital or analog input either locally or by remote interface. If OPTIMOD 6300 is set to accept a digital input and the feed fails, OPTIMOD 6300 will automatically switch back to the analog input.

In dual-mono mode, the two programs must be combined into one AES3 stream to be accepted by the 6300. However, you can configure the 6300 so that one digital output is dedicated to channel 1 and one output to channel 2 in dual-mono mode. You can also configure the outputs so that one or both outputs carry both channels.

Level control of the AES3 input is accomplished via software control through System Setup (see step 6 on page 2-23) or through PC Remote.

1-7

Both analog and digital outputs are active continuously

The 6300’s output sample rate can be locked to the 6300’s internal crystal clock, the sample rate present at its AES3 input, the sample rate present at its AES11 sync input, or wordclock.

The 6300 can apply J.17 deemphasis to signals applied to its digital input and J.17 preemphasis to the processed signal emitted from its digital output. J.17 is a 6 dB/octave shelving preemphasis/deemphasis standard with break points at 400 Hz and 4 kHz. It is used mainly in older studio / transmitter links that use NICAM technology. The 6300’s provisions for J.17 make it fully compatible with systems using this standard.

Analog Left/Right Input/Output

The left and right analog inputs are on XLR-type female connectors on the rear panel. Input impedance is greater than 10k; balanced and floating. Inputs can accommodate up to +27dBu (0dBu = 0.775Vrms).

The left and right analog outputs are on XLR-type male connectors on the rear panel. Output impedance is 50; balanced and floating. The outputs can drive 600 or higher impedances, balanced or unbalanced. The peak output level is adjustable from –6dBu to +24dBu.

Level control of the analog inputs and outputs is accomplished via software control through System Setup (see step 4 on page 2-21 and step 7 on page 2-23) or through PC Remote.

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INTRODUCTION ORBAN MODEL 6300

Remote Control Interface

The Remote Control Interface is a set of eight optically isolated GPI inputs on a DB25 connector, which can be activated by 5-12V DC. They can control various functions of the 6300:

 Recall any Factory Preset, User Preset, Test Mode state (Bypass or Tone), or exit

from a Test Mode to the previous processing preset.

 Switch the 6300 to use either the analog input or the digital input.

 Switch the 6300 between stereo and dual mono modes.

 Reset the 6300’s internal clock to the nearest hour or to midnight.

You can reconfigure the functions of the GPI inputs via System Setup. For example, if you are not switching between stereo and mono, the inputs ordinarily dedicated to controlling the stereo/mono status can instead be re-configured to call additional presets.

See page 2-35 for information on programming the remote control interface.

Computer Interface

On the rear panel of the 6300 are an RS-232 serial port and an Ethernet port for interfacing to IBM-compatible PCs either locally or through a TCP/IP network. These computer interfaces support remote control and metering, and allow downloading software upgrades.

Each 6300 package ships with 6300 PC Remote software, an application for any IBMcompatible PC running Microsoft Windows 2000 (Service Pack 3 or higher) or XP. 6300 PC Remote permits you to adjust any 6300 preset by remote control or to do virtually anything else that you can do from the 6300’s front panel controls. The program displays all of the 6300’s LCD meters on the computer screen to aid remote adjustment.

RS-232 Serial Port

6300 PC Remote can communicate at up to 115 kbps via modem or direct connection between the computer and the 6300 through their RS-232 serial ports.

RJ45 Ethernet Connector

The 6300 can be connected to any Ethernet network that supports the TCP/IP protocol.

See Networking and Remote Control on page 2-36 for more information.

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OPTIMOD 6300 DIGITAL INTRODUCTION

Location of OPTIMOD 6300

This section assumes that OPTIMOD 6300 will be used as a transmission processor. See the Using OPTIMOD 6300 as a Studio Level Controller on page 1-10 if OPTIMOD 6300 is to be used as a studio AGC.

At the transmitter is best

The best location for OPTIMOD 6300 is as close as possible to the transmitter or encoder so that OPTIMOD 6300’s AES3 output can be connected to the transmitter or encoder through a circuit path that introduces no change in OPTIMOD 6300’s output bitstream. A high-quality AES3 cable is ideal.

Where access to the transmitter is not possible

Sometimes it is not possible to locate OPTIMOD 6300 at the transmitter. Instead, it must be located on the studio side of the link connecting the audio plant to the transmitter. If the transmitter plant is not accessible, all audio processing must be done at the studio and you must tolerate any damage that occurs later.

If an uncompressed digital link is available, this is an ideal situation because such a link will pass OPTIMOD 6300’s output with little or no degradation. However, such a link is not always available.

1-9

If only a 32 kHz sample rate link is available, the sample rate conversion necessary to downsample the audio will cause overshoots when OPTIMOD 6300 is operated at 20 kHz bandwidth because the sample rate converter removes spectral energy. In this case, you can minimize overshoot by operating OPTIMOD 6300 at 15 kHz bandwidth because the bandwidth limiting occurs before OPTIMOD 6300’s peak limiter, which then accurately controls the peak level of the 15 kHz band-limited signal.

Unless the path is a digital path using no lossy compression, this situation will yield lower performance than if OPTIMOD 6300 is connected directly to the transmitter because artifacts that cannot be controlled by OPTIMOD 6300 will be introduced by the link to the transmitter. These artifacts can decrease average modulation by 24dB and can also add noise and audible non-linear distortion. With lossy digital compression, this deterioration will be directly related to the bit rate. For an analog path, the deterioration will depend on the amount of linear and non-linear distortion in the path. In addition, there will be an unavoidable amount of overshoot caused by asynchronous re-sampling (see page 1-13).

strategy is to apply to OPTIMOD 6300’s output signal the same lossy compres-

One sion that the DAB transmitter would apply. If a digital link is available with sufficient bit rate to pass this compressed signal, it can then be passed directly to the DAB transmitter without further processing if synchronization issues can be resolved. Consult with the manufacturer of your DAB transmitter to see if this can be done.

Where only an analog or lossy digital link is available, feed the audio output of OPTIMOD 6300 directly into the link. If present, the transmitter’s protection limiter should be adjusted so that audio is normally just below the threshold of limiting. The transmitter protection limiter should respond only to signals caused by faults or by spurious peaks introduced by imperfections in the link.

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INTRODUCTION ORBAN MODEL 6300

Where maximum quality is desired, it is wise to request that all equipment in the signal path after the studio be carefully measured, aligned, and qualified to meet the appropriate standards for bandwidth, distortion group delay and gain stability. Such equipment should be measured at reasonable intervals.

OPTIMOD 6300 at the transmitter: gain control before the STL

The audio received at OPTIMOD 6300’s input should have the highest possible quality. To achieve the full audible benefit of OPTIMOD 6300 processing, use a studiotransmitter link (STL) that is as flat as the bandwidth of OPTIMOD 6300 as used in your plant (usually 20 kHz). Ideally, you should use a 20-bit (or better) uncompressed digital link with at least 44.1 kHz sample frequency.

Because the audio processor controls peaks, it is not important that the audio link feeding OPTIMOD 6300’s input terminals be phase-linear. However, the link should have low noise, the flattest possible frequency response from 20-20,000Hz, and low non-linear distortion.

If the audio link between the studio and the transmitter is noisy (or is limited to 16 bits or less, if digital), performing the AGC function at the studio site can minimize the audibility of this noise. AGC applied before the audio link improves the signalto-noise ratio because the average level on the link will be greater. Further, many STLs require level control to prevent the STL from being overloaded.

To apply such level control and compression, we recommend an Orban AGC/Limiter/HF Limiter/Clipper before the STL transmitter. This performs the function of OPTIMOD 6300’s internal broadband automatic gain control (AGC) while simultaneously protecting the STL. When using a studio AGC, defeat OPTIMOD 6300’s broadband AGC.

Using OPTIMOD 6300 as a Studio Level Controller

See page 6-41 for a block diagram of the 6300’s signal processing and routing.

Because of its versatile signal routing, OPTIMOD 6300 can be used as a combined studio AGC, digital radio/netcast processor, and low-delay talent headphone processor. Any output can emit any of the following signals:

 Stereo enhancement, equalization, and AGC without look-ahead peak limiting

 Stereo enhancement, equalization, and AGC with peak limiting

 Stereo enhancement, equalization, and multiband processing (2-band or 5-band,

including AGC) without peak limiting

 Stereo enhancement, equalization, and multiband processing (2-band or 5-band,

including AGC) with peak limiting

In a typical application:

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OPTIMOD 6300 DIGITAL INTRODUCTION

 OPTIMOD 6300 substitutes for the AGC in an Optimod at the transmitter and

provides protection limiting for the STL. Digital output #1 emits the peak-limited output of the AGC to drive the STL. The AGC is turned off in the transmitter-side Optimod.

See Studio-Transmitter Link on page 1-12 for more about STLs.

If the STL has at least 16 bits of dynamic range, it is often practical to drive it with the AGC alone, allowing additional headroom for the overshoots that the 6300’s peak limiter would have otherwise removed. Defeating the peak limiter (by setting the output to AGC or Multiband) will remove about 16 milliseconds of delay from the signal path. Note that when the limiter is bypassed, the delay is minimum regardless of the setting of the P

The 6300’s AGC uses the same dual-band, window-gated, matrix technology as the AGCs in Orban’s 2300, 5300, 8300, 8382, 8400, 8500, 9300, and 9400 Optimods. It can therefore accurately substitute for the AGCs in these devices and can help maintain an all-digital signal path throughout the facility. Because the 6300’s AGC is more advanced than the AGCs in Orban’s 2200, 8200, and 9200 Optimods, the 6300 can upgrade the performance of these older products when substituted for their AGCs.

Moreover, because the 6300 supports presets that be recalled by remote control, it can be automatically synchronized to the presets active at a transmitter-side Optimod when presets are dayparted.

The 6300’s multiband processing is based on the technology used in Optimod-FM 8500’s digital radio processing path and will sound similar. To help you match the sound of an 8400 or 8500, the 6300 provides presets with the same names as those in Optimod-8400 and 8500. If you are using a factory preset at a transmitter-side 8400 or 8500, you can recall a preset with the same name in the 6300 to ensure that the sound stays the same as it would if you were using an 8400 or 8500 with its internal AGC.

To achieve this match, you must adjust the transmitter-side Optimod’s input reference level so that the Optimod performs the correct amount of multiband gain reduction (i.e., the same amount of GR that it would have performed if its internal AGC were active). This match will occur automatically if you use the 6300’s tone generator to emit a 400 Hz tone and then use the tone to calibrate the transmitter-side Optimod. Step (E) on page 2-22 of this manual describes this procedure for a 6300 at the transmitter; the proc 9300, and 9400 Optimods are virtually identical and are described in their manuals.

ROC DELAY controls.

edures for the 2300, 5300, 8300, 8382, 8400, 8500,

1-11

 Digital output #2 emits a peak-limited, multiband-processed signal to drive a

netcast encoder (like Orban’s Opticodec-PC) or a digital radio transmitter.

 The analog output emits a low-delay multiband-processed signal with no peak

limiting to drive talent headphones at the studio.

The total input-to-output delay through this path is approximately 5 ms. While you could also use one of the digital outputs to emit this signal, this would add about 1 ms of delay because of the additional delay of the external D/A converter required before the headphone amplifier.

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INTRODUCTION ORBAN MODEL 6300

The peak limiters can be switched to operate either “flat” or on a 50s or 75s preemphasis curve to protect a pre-emphasized path like a typical analog microwave STL.

When operated in pre-emphasized mode, the peak limiters should only be used for light protection limiting with a low duty cycle. Otherwise, you may hear pumping on material with a lot of high frequency energy like sibilance.

Because the look-ahead peak limiting technology used in the 6300 performs optimally with “flat” transmission channels (like almost all digital channels), the 6300 cannot provide loudness processing for preemphasized radio channels. Use one of Orban’s Optimod-FM processors for this application. For analog television with FM aural carrier(s), use Optimod-TV 8382.

Studio-Transmitter Link

The following information is mainly relevant to digital radio and TV broadcasters who have their transmitters and studios at different locations. Most netcasters will not find the information in this section relevant because if netcasters need to ship audio beyond their LAN, they ordinarily ship it from one location to another in the form of encoded audio through low-capacity Telco-supplied digital links like ISDN or E-1/T-1.

Transmission from Studio to Transmitter

There are five types of studio-transmitter links (STLs) in common use in broadcast service: uncompressed digital, digital with lossy compression (like MPEG, Dolby

APT-x video microwave STL.

STLs are used in two fundamentally different ways. Either they can pass unprocessed audio for application to OPTIMOD 6300’s input or they can pass OPTIMOD 6300’s peak-controlled output. The two applications have fundamentally different performance requirements.

 A link that passes unprocessed audio should have very low noise and low non-

 A link that passes processed audio does not need as low a noise floor as a link

), microwave, analog landline (telephone/post line), and audio subcarrier on a

At this writing, we believe that the Internet is insufficiently reliable to serve as a carrier for a real-time STL because of the risk that network interruptions might randomly disturb the audio feed.

linear distortion, but its transient response is not important.

passing unprocessed audio. However, its transient response is critical. In DAB applications, such a link must be uncompressed digital and must use digital inputs and outputs to achieve best results. We will elaborate below.

, or

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Digital links

Digital links may pass audio as straightforward PCM encoding or they may apply lossy data reduction processing to the signal to reduce the number of bits per second required for transmission through the digital link. Such lossy processing will almost invariably distort peak levels and such links must therefore be carefully qualified before you use them to carry the peak-controlled output of OPTIMOD 6300 to the transmitter. For example, the MPEG Layer 2 algorithm can increase peak levels up to 4dB at 160kb/sec by adding large amounts of quantization noise to the signal. While the desired program material may psychoacoustically mask this noise, it is nevertheless large enough to affect peak levels severely. For any lossy compression system the higher the data rate, the less the peak levels will be corrupted by added noise, so use the highest data rate practical in your system.

It is practical (though not ideal) to use lossy data reduction to pass unprocessed audio to OPTIMOD 6300’s input. The data rate should be at least of “contribution quality”—the higher, the better. If any part of the studio chain is analog, we recommend using at least 20-bit A/D conversion before encoding.

Because OPTIMOD 6300 uses multiband limiting, it can dynamically change the frequency response of the channel. This can violate the psychoacoustic masking assumptions made in designing the lossy data reduction algorithm. Therefore, you need to leave “headroom” in the algorithm so that OPTIMOD 6300’s multiband processing will not unmask quantization noise. This is also true of any lossy data reduction applied in the studio (such as hard disk digital delivery systems).

1-13

For MPEG Layer 2 encoding, we recommend 384kb/second or higher.

Some links may use straightforward PCM (pulse-code modulation) without lossy data reduction. If you connect to these through an AES3 digital interface, these can be very transparent if they do not truncate the digital words produced by the devices driving their inputs and they do not require downward sample rate conversion.

Downward sample rate conversion can cause overshoot due to spectral truncation and asynchronous re-sampling of the 48 kHz peak-controlled samples.

If the link does not have an AES3 input, you must drive its analog input from OPTIMOD 6300’s analog output. This is not recommended because OPTIMOD 6300’s monitor output will overshoot in the analog domain because of the physics of the system. The use of external digital-to-analog converters should also be avoided for many of the same reasons.

Peak control in OPTIMOD 6300 occurs at a 48 kHz sample frequency. This is sufficient to prevent any samples from exceeding the threshold of limiting. However, after reconstruction, the analog output may overshoot the nominal 100% level because these overshoots “fall between the samples,” so the processing cannot be aware of them. If you use this output to feed the analog input of a digital STL, the new samples in the STL will not be synchronous with the samples inside OPTIMOD 6300. Therefore, they may well fall on the overshoots, causing loss of peak modulation control. It is thus very important to use a link with an AES3 input to ensure correct peak control.

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INTRODUCTION ORBAN MODEL 6300

The same sort of thing can happen if you use the output sample rate converter because the output samples are no longer synchronous with the peak-controlled samples in the processing. Always use 48 kHz output sample rate with internal sync to achieve best peak control.

If you must use an analog input, you may bypass any anti-aliasing filters in digital links driven by OPTIMOD 6300 because OPTIMOD 6300’s output spectrum is tightly controlled. This ensures the most accurate possible transient response, given the limitations of asynchronous sampling described above.

NICAM is a sort of hybrid between PCM and lossy data reduction systems. It uses a block-companded floating-point representation of the signal with J.17 preemphasis.

Older technology converters (including some older NICAM encoders) may exhibit quantization distortion unless they have been correctly dithered. Additionally, they can exhibit rapid changes in group delay around cut-off because their analog filters are ordinarily not group-delay equalized. The installing engineer should be aware of all of these potential problems when designing a transmission system.

You can minimize any problems by always driving a digital STL with OPTIMOD 6300’s AES3 digital output, which will provide the most accurate interface to the STL. The digital input and output accommodate sample rates of 32 kHz, 44.1 kHz, 48, 88.2, and 96 kHz.

Microwave STLs

In general, an analog microwave STL provides high audio quality as long as there is a line-of-sight transmission path from studio to transmitter of less than 10 miles (16 km). If not, RF signal-to-noise ratio, multipath distortion, and diffraction effects can cause serious quality problems. However, the noise and non-linear distortion characteristics of such links are likely to be notably poorer than 16-bit digital even if propagation conditions are ideal.

As discussed above, asynchronous resampling will cause overshoots if any analog path (even a perfectly transparent one) passes OPTIMOD 6300’s processed output to the transmitter. Lack of transparency in the analog path will cause even more overshoot. Unless carefully designed, microwave STLs can introduce non-constant group delay in the audio spectrum, distorting peak levels when used to pass processed audio. Nevertheless, in a system using a microwave STL OPTIMOD 6300 is sometimes located at the studio and any overshoots induced by the link are tolerated or removed by the transmitter’s protection limiter (if any). OPTIMOD 6300 can only be located at the transmitter if the signal-to-noise ratio of the STL is good enough to pass unprocessed audio. The signal-to-noise ratio of the STL can be used optimally if an Orban Optimod-PC 1101, 8200ST Compressor / Limiter / HF Limiter / Clipper, an 4000 Transmission Limiter, or another 6300 protects the link from overload. Of these, the 1101 and 6300 are currently manufactured as of this writing and are the preferred choices because their AGCs are identical to the AGC in the 6300.

If OPTIMOD 6300 is located at the transmitter and receives unprocessed audio from a microwave STL, it may be useful to use a companding-type noise reduction system (like dbx Type 2 or Dolby SR) around the link. This will minimize any audible noise buildup caused by compression within OPTIMOD 6300.

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Some microwave links may be modified such that the deviation from linear phase is less than + and less than 0.1dB down at 20 kHz. This specification results in less than 1% overshoot with processed audio. Many such links have been designed to be easily configured at the factory for composite operation, where an entire FM stereo baseband is passed. The requirements for maintaining stereo separation in composite operation are similar to the requirements for high waveform fidelity with low overshoot. Therefore, most links have the potential for excellent waveform fidelity if they are configured for composite operation (even if a composite FM stereo signal is not actually being applied to the link).

Further, it is common for a microwave STL to bounce because of a large infrasonic peak in its frequency response caused by an under-damped automatic frequency control (AFC) phase-locked loop. This bounce can increase the STL’s peak carrier deviation by as much as 2dB, reducing average modulation. Many commercial STLs have this problem.

Analog landline (PTT/post office line)

Analog landline quality is extremely variable, ranging from excellent to poor. (Fortunately, they are largely obsolete, having been replaced by digital links.) Whether landlines should be used or not depends upon the quality of the lines locally available, and upon the availability of other alternatives. Due to line equalizer characteristics and phase shifts, even the best landlines tend to veil audio quality slightly. They will certainly be the weakest link in a DAB broadcast chain.

10 20-20 kHz, and frequency response is less than 3dB down at 0.15Hz

1-15

Slight frequency response irregularities and non-constant group delay characteristics will alter the peak-to-average ratio, and will thus reduce the effectiveness of any peak limiting performed prior to their inputs.

Using Lossy Data Reduction in the Audio Chain

Before the 6300

Many broadcasters are now using lossy data reduction algorithms like MPEG-1 Layer 2, Layer 3, or Dolby AC2 to increase the storage time of digital playback media. In addition, source material is often supplied through a lossy data reduction algorithm, whether from satellite or over landlines. Sometimes, several encode/decode cycles will be cascaded before the material is finally presented to OPTIMOD 6300’s input.

All such algorithms operate by increasing the quantization noise in discrete frequency bands. If not psychoacoustically masked by the program material, this noise may be perceived as distortion, “gurgling,” swishing, or other interference. Psychoacoustic calculations are used to ensure that the added noise is masked by the desired program material and not heard. Cascading several stages of such processing can raise the added quantization noise above the threshold of masking, making it audible.

In addition, at least one other mechanism can cause the noise to become audible at the radio. OPTIMOD 6300’s multiband limiter performs an “automatic equalization”

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INTRODUCTION ORBAN MODEL 6300

function that can radically change the frequency balance of the program (sometimes by more than 10 dB). This can cause noise that would otherwise have been masked to become unmasked because the psychoacoustic masking conditions under which the masking thresholds were originally computed have changed. Accordingly, if you use lossy data reduction in the studio, you should use the highest data rate possible. This maximizes the headroom between the added noise and the threshold where it will be heard. In addition, you should minimize the number of encode and decode cycles because each cycle moves the added noise closer to the threshold where the added noise is heard.

Interfacing to the Transmitter

Sync Input

In the Eureka-147 system, several programs are combined into one “ensemble multiplex.” This requires synchronization of the sample rates applied to the transmitter. DTV and HD Radio also require synchronization.

The 6300 provides a BNC connector that accepts “house sync” in AES11id (75 unbalanced) or wordclock (square wave at the sample frequency) format. A setup menu selection determines whether the 6300’s output will be synchronized to wordclock, AES11, the 6300’s internal clock, or the signal applied to its AES3 audio input. Because the 6300’s digital input is equipped with a sample rate converter, an asynchronous digital input can be applied to the 6300 while its output is synchronized to a master sync generator.

AES User Bits

In Setup, you can configure the 6300 to either block or pass AES User Bits from its digital input to its digital output.

Sample Rate and Audio Bandwidth

Most DAB audio is at 48 kHz sample rate. However, the iBiquity™ HD-AM™ system operates at 32 kHz, requiring 15 kHz audio bandwidth. The Eureka-147 system offers a 24 kHz sample rate option, requiring 10 kHz audio bandwidth. The Digital Radio Mondiale (DRM) system also allows reduced audio bandwidths and sample rate for speech-grade services.

OPTIMOD 6300’s bandwidth can be adjusted from 10 kHz to 20 kHz to provide correctly anti-aliased audio for any of these systems. As long as any anti-aliasing filters following OPTIMOD 6300’s output are phase-linear and have integer sample time delays, these filters will pass the band-limited OPTIMOD 6300 output without introducing overshoot because they remove no further spectrum and do not cause their output samples to become asynchronous with the peak-controlled samples at OPTIMOD 6300’s output.

The bandwidth-limiting filter is located before the processing, so it affects all outputs equally.

OPTIMOD 6300 always operates at 48 kHz sample rate internally. Its output is equipped with a sample rate converter that can output at 32 kHz, 44.1 kHz, 48, 88.2,

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or 96 kHz. These rates can be synchronized to the 6300’s internal clock, its AES3 digital input, its AES11id input, or its wordclock input.

We expect that transmitters that transmit sample rates below 32 kHz will provide internal sample rate conversion, and that most will probably accept audio at 48 kHz sample rate regardless of the final sample rate of the transmission. Any sample rate conversion may cause the transmitted sample to become asynchronous to the peakcontrolled samples emerging from OPTIMOD 6300 and may therefore introduce overshoot. Fortunately, as the audio bandwidth becomes lower, this becomes less of the problem because the 48 kHz sample rate within OPTIMOD 6300 oversamples the audio. It is therefore less likely that peaks will “slip between the samples.”

Subframe Delay

OPTIMOD 6300 provides an adjustable time delay of up to 96 milliseconds. This allows the installer to force the total delay through the processing to equal one frame (in sound-for-picture applications). The definition of “frame” depends on the system in which OPTIMOD 6300 is installed.

The selections are MINIMUM (approximately 24 ms delay), 30 fps (NTSC monochrome video), 29.97 fps (NTSC color video), 25 fps (most PAL video), and 24 fps (film). You can also adjust the delay in one-millisecond increments from 15 to 96 ms.

1-17

About Transmission Levels and Metering

Meters

Studio engineers and transmission engineers consider audio levels and their measurements differently, so they typically use different methods of metering to monitor these levels. The VU meter is an average-responding meter (measuring the approximate RMS level) with a 300ms rise time and decay time; the VU indication usually under-indicates the true peak level by 8 to 14dB. The Peak Program Meter (PPM) indicates a level between RMS and the actual peak. The PPM has an attack time of 10ms, slow enough to cause the meter to ignore narrow peaks and under-indicate the true peak level by 5 dB or more. The absolute peak-sensing meter or LED indicator shows the true peak level. It has an instantaneous attack time, and a release time slow enough to allow the engineer to read the peak level easily. Figure 1-1 shows of a VU meter and a PPM for a few seconds of music program.

the relative difference between the absolute peak level, and the indications

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INTRODUCTION ORBAN MODEL 6300

ABSOLUTE PEAK

PPM

Figure 1-1: Absolute Peak Level, VU and PPM Reading

Studio Line-up Levels and Headroom

The studio engineer is primarily concerned with calibrating the equipment to provide the required input level for proper operation of each device, and so that all devices operate with the same input and output levels. This facilitates patching devices in and out without recalibration.

For line-up, the studio engineer uses a calibration tone at a studio standard level, commonly called line-up level, reference level, or operating level. Metering at the studio is by a VU meter or PPM (Peak Program Meter). As discussed above, the VU or PPM indication under-indicates the true peak level. Most modern studio audio devices have a clipping level of no less than +21dBu, and often +24dBu or more. So the studio standardizes on a maximum program indication on the meter that is lower than the clipping level, so those peaks that the meter does not indicate will not be clipped. Line-up level is usually at this same maximum meter indication. In facilities that use VU meters, this level is usually at 0VU, which corresponds to the studio standard level, typically +4 or +8dBu.

For facilities using +4dBu standard level, instantaneous peaks can reach +18dBu or higher (particularly if the operator overdrives the console or desk). Older facilities with +8dBu standard level and equipment that clips at +18 or +21dBu will experience noticeable clipping on some program material.

In facilities that use the BBC-standard PPM, maximum program level is usually PPM4 for music, PPM6 for speech. Line-up level is usually PPM4, which corresponds to +4dBu. Instantaneous peaks will reach +17dBu or more on voice.

In facilities that use PPMs that indicate level directly in dBu, maximum program and line-up level is often +6dBu. Instantaneous peaks will reach +11dBu or more.

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OPTIMOD 6300 DIGITAL INTRODUCTION

Transmission Levels

The transmission engineer is primarily concerned with the peak level of a program to prevent overloading or over-modulation of the transmission system. This peak overload level is defined differently, system to system.

In FM modulation (FM / VHF radio and television broadcast, microwave or analog satellite links), it is the maximum-permitted RF carrier frequency deviation. In AM modulation, it is negative carrier pinch-off. In analog telephone / post / PTT transmission, it is the level above which serious crosstalk into other channels occurs, or the level at which the amplifiers in the channel overload. In digital channels, it is the largest possible digital word.

For metering, the transmission engineer uses an oscilloscope, absolute peak-sensing meter, calibrated peak-sensing LED indicator, or a modulation meter. A modulation meter usually has two components—a semi-peak reading meter (like a PPM), and a peak-indicating light, which is calibrated to turn on whenever the instantaneous peak modulation exceeds the overmodulation threshold.

1-19

Line-Up Facilities

Metering of Levels

The meters on the 6300 show left/right input levels and left/right output modulation. Left and right input level is shown on a VU-type scale 0 to –40dB), while the metering indicates absolute instantaneous peak (much faster than a standard PPM or VU meter). The input meter is scaled so that 0 dB corresponds to the absolute maximum peak level that the 6300 can accept (+26 dBu). If you are using the AES3 digital input, the maximum digital word at the input corresponds to the 0 dB point on the 6300’s input meter.

Built-in Calibrated Line-up Tones

To facilitate matching the output level of the 6300 to the transmission system that it is driving, the 6300 contains an adjustable test tone oscillator that produces sine waves at 6300’s (analog or digital) left and right outputs.

When the 6300’s left/right analog output is switched to F inserted between output of the 6300’s audio processing and its line output. Thus, as the frequency of the test tone is changed, the level at the 6300’s line output will follow the selected deemphasis curve. In most cases the preemphasis filter in the driven equipment will undo the effect of the 6300’s internal deemphasis, so the 6300’s output level should be adjusted such that the tone produces 100% modulation of the transmission link as measured after the link’s preemphasis filter. At 100Hz, switching the deemphasis out or in will have negligible effect on the level appearing at the 6300’s left and right audio outputs.

LAT, a deemphasis filter is

Page 42

1-20

INTRODUCTION ORBAN MODEL 6300

You can adjust the frequency and modulation level of the built-in line-up tone via the front panel or PC Remote software. You can use the front panel, the PC Remote software, or the opto-isolated remote control interface ports to activate the Test Tone.

Built-in Calibrated Bypass Test Mode

A BYPASS Test Mode is available to transparently pass line-up tones generated ear- lier in the system. It will also pass program material, with no gain reduction or protection against overmodulation. It can transparently pass any line-up tone applied to its input up to about 130% output modulation, at which point clipping may occur.

Setting Output/Modulation Levels

In a perfect world, one could set the peak level at OPTIMOD 6300’s output to 0 dBfs. However, there are at several potential problems that may make it desirable to set the modulation level slightly lower.

First is asynchronous re-sampling, which we have discussed at length earlier in this chapter. (See page 1-13, for example.) If any digital processing that causes samples to be asynchronous to its input samples is used after OPTIMOD 6300’s output, this can cause the peak levels of individual samples to increase above the nominal threshold of limiting. This increase is typically less than 0.5dB.

its output

Second is additional processing, such as equalization. Equalization that applies boosts at certain frequencies is very likely to add peak level and thus cause clipping. However, equalization that attenuates certain frequencies can also cause overshoots because of added phase shifts. So be wary of any equalization and allow headroom to accommodate it.

Third is headroom in lossy data compression systems. A well-designed perceptual encoder will accept samples up to 0dBfs and will have enough internal headroom to avoid clipping. However, there is no guarantee that receiver manufacturers or de- coder providers will implement perceptual decoders with sufficient headroom to avoid clipping overshoots. Such overshoots are the inevitable side effect of increasing the quantization noise in the channel, and can be as large as 3-4dB. Most perceptual encoder algorithms are designed to have unity gain from input to output. So if peak levels at the input frequently come up to 0dBfs, peak levels at the output will frequently exceed 0dBfs (and will be clipped) unless the decoder algorithm is adjusted to have less than unity gain.

Canny engineers familiarize themselves with the performance of real-world receivers and reduce the peak modulation of the transmissions if it turns out that most receivers are clipping due to perceptual encoding overshoots. Our experience to date suggests that allowing 3dB headroom will prevent audible overshoot-induced clipping in low bite-rate systems (e.g., 32 kbps streams), while 2dB is adequate for 128kbps and above. While some clipping may still occur, it will have a very low duty cycle and will almost certainly be inaudible.

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OPTIMOD 6300 DIGITAL INTRODUCTION

Monitoring on Loudspeakers and Headphones

In live operations, highly processed audio often causes a problem with the DJ or presenter’s headphones. The delay through OPTIMOD 6300 can be as much as

25ms (or more, if the installer purposely adds frame-makeup delay). This delay, although not usually audible as a distinct echo, can cause bone conduction comb filtering of the DJ/presenter’s voice in his/her ears. This is almost always very uncomfortable to them.

OPTIMOD 6300’s processing can emit the output of either the multiband compressor or AGC before their associated look-ahead peak limiters, which is where the majority of the delay occurs. The AGC and multiband pre-limiter signals can be routed to any output. The input/output delay of the pre-limiter signal is approximately 3 ms for the AGC or 5 ms at the multiband compressor. This delay can still be uncomfortable to some, but most DJ/presenters find it acceptable and almost anyone can get used to it.

See page 6-41 for a diagram of the signal routing.

1-21

Streaming and Netcasting Applications

This section was written in mid 2006. As the state of the art in netcasting is changing with ferocious rapidity, we expect it to become outdated quickly. Please check Orban’s web site, www.orban.com, for newer information.

Using OPTIMOD 6300 in Streaming Applications

You need an audio source connection (either analog, AES3 digital, or SPDIF digital). The digital input can accept any sample rate from 20 to 96 kHz. You can also use any stream available within the computer’s internal WAVE audio system, such as a digital playout system. If you use the computer’s WAVE audio system, you will need a sound card with full duplex capability and digital inputs and outputs. Connect the digital output of the sound card to the 6300’s digital input and connect the 6300’s digital output to the input of the sound card.

You will ordinarily connect the signal that the sound card receives to the input of an encoder application, like Orban’s Opticodec-PC, Microsoft Windows Media Encoder, Apple QuickTime® Broadcaster, or RealNetworks’ Real/Helix Producer. You then apply the encoded output of the encoder to a netcast server application, which may operate on the same machine as the encoder, or on a different machine on your network. In the latter case, you will route the encoded audio to the netcast server application through your network.

See Processing for Low Bit Rate Codecs on page 3-4.

Loudness

You can expect a significant increase in loudness from OPTIMOD 6300 processing by comparison to most unprocessed audio.

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1-22

INTRODUCTION ORBAN MODEL 6300

An exception is recently mastered CDs, which may have already been aggressively processed for loudness when they were mastered.

In radio broadcasting, it is generally believed that loudness relative to other stations attracts an audience that perceives the station as being more powerful than its competition. We expect that the same subliminal psychology will also hold true in netcasting.

Choosing your Encoder

The state of the art in encoder technology is rapidly changing. At this writing, the best audio encoder technology available is Coding Technologies AAC/aacPlus v2. Orban is the first provider of this technology for streaming audio applications with Opticodec-PC. Opticodec-PC can provide entertainment-quality stereo streams at 32 kbps. At 48 kbps, many listeners prefer the sound to that of FM.

Be aware that different encoders are optimized for different bit rates, and you should match your encoder to your potential audience. An encoder appropriate for a dial-up rate of 20kb/sec may not be optimum for ISDN, DSL, or E-1/T-1 rates. This makes it necessary to use more than one algorithm to optimally serve audiences with these disparate connection speeds.

MPEG-1 Layer 3 has become a de-facto standard for distribution of non-streaming, high fidelity audio on the Internet, although aacPlus, as used in Opticodec-PC, is far more efficient. Orban’s OPTICODEC-PC FE is an AAC/aacPlus file encoder application that can create such efficient files. Thanks to the Apple iPod®, AAC/MP4/M4A is rapidly becoming the defacto standard for downloadable music.

OPTIMOD 6300 is well matched to AAC/aacPlus and to MP3. It can effectively preprocess audio intended for playback from either format. If you decide to use MP3, choose your MP3 encoder wisely, as not all MP3 encoders are created equal and provide different levels of quality for a given bitrate.

EAS Test

For stations participating in the Emergency Alert System (EAS) in the United States, broadcast of EAS tones and data can be accomplished in three different ways:

1. Run EAS tones and data through the 6300.

Note that 6300 processing may not allow the full modulation level as required by EAS standards. It may therefore be necessary to temporarily defeat the 6300’s processing during the broadcast of EAS tones and data. Placing the 6300 in its BYPASS Test Mode can defeat the processing. The BYPASS fixed gain through the 6300. See “Test Modes” on page 3-56 for more information.

GAIN control sets a

2. Place the 6300 in Bypass mode locally.

A) Navigate to S

ETUP > MODE and set MODE to BYPASS.

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OPTIMOD 6300 DIGITAL INTRODUCTION

You can set the bypass gain with the BYPASS GAIN control located to the right of the M

B) Begin EAS broadcast.

After the EAS broadcast, resume normal processing:

ODE control.

1-23

C) Set the M

This will restore the processing preset in use prior to the Test Mode.

3. Place the 6300 in Bypass mode by remote control. Then program any

two Remote Interface inputs for “Bypass” and “Exit Test,” respectively.

A) Connect two outputs from your station remote control system to the

REMOTE

the wiring diagram in Figure 2-2 on page 2-3.

B) Program two GPI ports for B

in Remote Control Interface Programming starting on page 2-35.

C) Place the 6300 in bypass mode by remote control.

a) Switch the 6300 into BYPASS

station’s remote control to the GPI port programmed as B

b) Begin EAS broadcast.

c) When the EAS broadcast is finished, switch the 6300 from B

a momentary command from your station’s remote control to the GPI port programmed as E

You may also choose to insert EAS broadcast tones and data directly into the transmitter, thus bypassing the 6300 for the duration of the EAS tones and data broadcast.

ODE to OPERATE.

INTERFACE connector on the rear panel of the 6300, according to

YPASS and EXIT TEST according to the instructions

mode by a momentary command from your

YPASS.

YPASS mode by

XIT TEST.

PC Control and Security Passcode

PC software control provides access to OPTIMOD 6300 via network, modem or direct (null modem cable) connection, with IBM PC-compatible computers running Windows 2000 or XP. PC access is permitted only with a valid user-defined passcode.

PC remote control can be ended from the front panel; this feature effectively prevents simultaneous remote and local control.

See Security and Passcode Programming (starting on page 2-32) for more detail.

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1-24

INTRODUCTION ORBAN MODEL 6300

Warranty, User Feedback

User Feedback

We are very interested in your comments about this product. We will carefully review your suggestions for improvements to either the product or the manual. Please email us at custserv@orban.com

LIMITED WARRANTY

[Valid only for products purchased and used in the United States]

Orban warrants Orban products against defects in material or workmanship for a period of two years from the date of original purchase for use, and agrees to repair or, at our option, replace any defective item without charge for either parts or labor.

IMPORTANT: This warranty does not cover damage resulting from accident, misuse or abuse, lack of reasonable care, the affixing of any attachment not provided with the product, loss of parts, or connecting the product to any but the specified receptacles. This warranty is void unless service or repairs are performed by an authorized service center. No responsibility is assumed for any special, incidental, or consequential damages. However, the limitation of any right or remedy shall not be effective where such is prohibited or restricted by law.

Simply take or ship your Orban products prepaid to our service department. Be sure to include a copy of your sales slip as proof of purchase date. We will not repair transit damage under the no-charge terms of this warranty. Orban will pay return shipping. (See Technical Support on page 5-12.)

No other warranty

This warranty gives you specific legal rights and you may have other rights that vary from state to state. Some states do not allow the exclusion of limitations of incidental or consequential damages or limitations on how long an implied warranty lasts, so the above exclusions and limitations may not apply to you.

, written or oral, is authorized for Orban Products.

INTERNATIONAL WARRANTY

Orban warrants Orban products against evident defects in material and workmanship for a period of two years from the date of original purchase for use. This warranty does not cover damage resulting from misuse or abuse, or lack of reasonable care, or inadequate repairs performed by unauthorized service centers. Performance of repairs or replacements under this warranty is subject to submission of this Warranty/Registration Card, completed and signed by the dealer on the day of purchase, and the sales slip. Shipment of the defective item is for repair under this warranty will be at the customer’s own risk and expense. This warranty is valid for the original purchaser only.

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OPTIMOD 6300 DIGITAL INTRODUCTION

EXTENDED WARRANTY

Any time during the initial two-year Warranty period (but not thereafter), you may purchase a three-year extension to the Warranty (yielding a total Warranty period of five years) by remitting to Orban ten percent of the gross purchase price of your Orban product. This offer applies only to new Orban products purchased from an authorized Orban Dealer. To accept the extended five-year warranty, please sign and date below, and fax this copy along with a copy of your original invoice (showing date of purchase) to Gareth Paredes at (510) 351-0500.

I ACCEPT THE EXTENDED FIVE-YEAR WARRANTY

__________________________________________________________________________

DATE______________________________________________________________________

1-25

MODEL NUMBER: 6300

SERIAL NUMBER____________________________________________________________

Page 48

Page 49

OPTIMOD 6300 DIGITAL INSTALLATION

Section 2

Installation

Installing the 6300

Allow about 2 hours for installation.

Installation consists of: (1) unpacking and inspecting the 6300, (2) mounting the 6300 in a rack, (3) connecting inputs, outputs and power, (4) optional connecting of remote control leads and (5) optional connecting of computer interface control leads.

2-1

When you have finished installing the 6300, proceed to “Quick Setup,” on page 2-

12.

1. Unpack and inspect.

If you note obvious physical damage, contact the carrier immediately to make a damage claim. Packed with the 6300 are:

1ea. Operating 2ea. Line Cords (domestic, European) 4ea. Rack-mounting screws, 10-32 x ½—with washers, #10 1ea. PC Remote Software CD

Save all packing materials! If you should ever have to ship the 6300 (e.g., for servicing), it is best to ship it in the original carton with its packing materials because both the carton and packing material have been carefully designed to protect the unit.

Complete the Registration Card and return it to Orban. (please)

The Registration Card enables us to inform you of new applications, performance improvements, software updates, and service aids that may be developed, and it helps us respond promptly to claims under warranty without our having to request a copy of your bill of sale or other proof of purchase. Please fill in the Registration Card and send it to us today. (The Registration Card is located after the cover page).

Customer names and information are confidential and are not sold to anyone.

Manual

Page 50

2-2

INSTALLATION ORBAN MODEL 6300

2. Install the appropriate power cord.

TYPE 18/3 SVT COR, TYP

(3 x .82 mm2)

WIRE COLOR

NORMAL ALT

BROWN

BLUE

GREEN-YELLOW

BROWN

BLUE

GREEN-YELLOW

BLACK

WHITE

GREEN

PLUG FOR

115 VAC

(USA)

TYPE H05VV - F - 0.75

PLUG FOR

230 VAC

(EUROPEAN)

CONDUCTOR

LINE

NEUTRAL

EARTH GND

CONDUCTOR WIRE COLOR

LINE

NEUTRAL

EARTH GND

Figure 2-1: AC Line Cord Wire Standard)

A) Check the power cord.

AC power passes through an IEC-standard mains connector and an RF filter designed to meet the standards of all international safety authorities.

The power cord is terminated in a “U-ground” plug (USA standard), or CEE7 / 7 plug (Continental Europe), as appropriate to your 6300’s Model Number. The green / yellow wire is connected directly to the 6300 chassis.

If you need to change the plug to meet your country’s standard and you are qualified to do so, see Figure 2-1. Otherwise, purc

hase a new mains

cord with the correct line plug attached.

3. Mount the 6300 in a rack.

The 6300 requires one standard rack unit (1 ¾ inches / 6.4 cm).

There should be a good ground connection between the rack and the 6300 chassis—check this with an ohmmeter to verify that the resistance is less than 0.5.

It is wise to allow ventilation above and below the unit. Mounting the unit over large heat-producing devices (such as a vacuum-tube power amplifier) may shorten component life and is not recommended. Ambient temperature should not exceed 45C (113F) when equipment is powered.

Equipment life will be extended if the unit is mounted away from sources of vibration, such as large blowers and is operated as cool as possible.

4. Connect inputs and outputs.

See the hookup and grounding information on the following pages.

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OPTIMOD 6300 DIGITAL INSTALLATION

TOPIC PAGE

Audio Input and Audio Output Connections.............................................2-5

AES3 Digital Input and Output ...................................................................2-7

Wordclock / AES11id Sync Input Grounding

PIN ASSIGNMENT

1. DIGITAL GOUND

2. REMOTE 1+

3. REMOTE 2+

4. REMOTE 3+

5. REMOTE 4+

6. REMOTE 5+

7. REMOTE 6+

8. REMOTE 7+

9. REMOTE 8+

10. TALLY 1

11. TALLY 2

12. N/C

13. ANALOG GROUND

14. REMOTE 1-

15. REMOTE 2-

16. REMOTE 3-

17. REMOTE 4-

18. REMOTE 5-

19. REMOTE 6-

20. REMOTE 7-

21. REMOTE 822-24. N/C

25. +12 VOLTS DC

....................................................................................................2-8

.................................................................2-8

REMOTE INTERFACE

2-3

Figure 2-2: Wiring the 25-pin Remote Interface Connector

5. Connect remote control interface. (optional)

For a full listing of 6300’s extensive remote control

provisions, refer to Remote

Control Interface Programming on page 2-35.

Optically isolated remote control connections are terminated

in a type DB-25

male connector located on the rear panel. It is wired according to Figure 2-2. To

the desired function, apply a 5-12V AC or DC pulse between the appropri-

select ate REMOTE

INTERFACE terminals. The () terminals can be connected together

and then connected to ground at pin 1 to create a Remote Common. A currentlimited +12VDC source is available on pin 25. If you use 48V, connect a 2k 10%, 2-watt carbon composition resistor in series with the Remote Common or the (+) terminal to provide current limiting.

In a high-RF environment, these wires should be short and should be run through foil-shielded cable, with the shield connected to CHASSIS GROUND at both ends.

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2-4

INSTALLATION ORBAN MODEL 6300

6. Connect tally outputs (optional)

See the schematic on page 6-26.

The 6300 supports two hardware tally outputs, and operate with respect to pin 1 (common). Therefore, the voltage applied to the load (such as a relay or opto-isolator) must be positive. You can use the 12 VDC source on pin 25 to drive the high side of the load, taking into account the fact that the voltage on pin 25 is current limited by a 310  resistor.

The tally outputs are protected against reverse polarity.

To avoid damaging the 6300, limit the current into a tally output to 30 mA. DO NOT connect a tally output directly to a low-impedance voltage source! The tally outputs are not protected against this abuse and the output transistors are likely to burn out. When driving a relay or other inductive load, connect a diode in reverse polarity across the relay coil to protect the driver transistors from reverse voltage caused by inductive kickback.

Note that the tally outputs have no special RFI protection. Therefore, it is wise to use shielded cable to make connections to them.

See step 17 on page 2-28 for instructions on programming the tally outputs.

7. Connec

You can connect to a computer via the 6300’s serial connector or via an Ethernet network. (See Networking on page 2-36.)

Because procedures and instructions for connecting to a opment and change, we have placed these instructions in a file called 6300_Vxxx_installation.pdf (where xxx represents the version number of the software). You can access this file from the Orban / Optimod 6300 folder in your computer’s Start Menu after you have run Orban’s PC Remote installer software.

t to a computer

which are NPN open-collector

PC are subject to devel-

You must have the 6300 PC Remote application installed on your computer before you upgrade your 6300’s firmware because 6300 PC Remote manages the upgrade.

You can use Adobe’s .pdf reader application to open and read this file. If you do not have the .pdf reader, it is available for free download from www.adobe.com

See Installing 6300 PC Remote Control Software on page 2-42 for more detail.

This file is also available from the / 6300 / Documentation / Vxxx folder at Orban’s ftp site, ftp.orban.com

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OPTIMOD 6300 DIGITAL INSTALLATION

6300 Rear Panel

[Note: The 6300’s front panel is described starting on page 3-1.]

The Power Cord is detachable and is terminated in a “U-ground” plug (USA standard), or CEE7 / 7 plug (Continental Europe), as appropriate to your 6300’s Model Number.

2-5

An RS-232 (PC Remote) Computer Interface, labeled S connect the 6300 to IBM PC-compatible computers, directly or via modem, for remote control, metering and software downloads.

A Remote Interface Connector (GPI connector) allows you to connect the 6300 to your existing transmitter remote control or other simple contact-closure control devices. The 6300 remote control supports user-programmable selection of up to eight optically isolated inputs for any one of the following parameters: recalling any factory- or user presets, selecting tone or bypass modes, selecting stereo or dual-mono mode, selecting analog, digital, or digital+J.17 input, and clock synchronization. (See Remote Control Interface Programming on page 2-35.) The 6300 remote control accepts a DB-25 connector

The Ethernet Port accepts a 10Mb/second or 100Mb/second Ethernet connection terminated with an RJ45 connector.

Digital AES3 Input and AES3 dual Outputs are provided to support two-channel AES3-standard digital audio signals through XLR-type connectors.

In dual-mono applications, digital outputs #1 and #2 can be dedicated to audio channel 1 (left) and channel 2 (right) respectively.

Analog Inputs and Outputs are provided to support left and right audio signals through XLR-type connectors.

ERIAL PORT, is provided to

Wordclock / AES11id Sync Input is provided on a female BNC connector.

The “id” refers to the fact that the connection is unbalanced and is designed to be interfaced with 75 coaxial cable terminated in a male BNC connector. This input is not internally terminated and requires external 75 termination if it is the last device on the cable.

Input and Output Connections

Cable

We recommend using two-conductor foil-shielded cable (such as Belden 8451 or equivalent) for the audio input and output connections because signal current flows through the two conductors only. The shield does not carry signal and is used only for shielding.

Page 54

2-6

INSTALLATION ORBAN MODEL 6300

Connectors

 Input and output connectors are XLR-type connectors.

In the XLR-type connectors, pin 1 is CHASSIS GROUND, while pin 2 and pin 3 are a balanced, floating pair. This wiring scheme is compatible with any studio-wiring standard: If pin 2 or 3 is considered LOW, the other pin is automatically HIGH.

Analog Audio Input

 Nominal input level between –14dBu and +8dBu will result in normal operation

of the 6300.

(0dBu = 0.775Vrms. For this application, the dBm @600 scale on voltmeters can be read as if it were calibrated in dBu.)

 The peak input level that causes overload is +27.0dBu.

 The electronically balanced input uses an ultra low noise and distortion differen-

tial amplifier for best common mode rejection and is compatible with most professional and semi-professional audio equipment, balanced or unbalanced, having a source impedance of 600 or less. The input is EMI suppressed.

 Input connections are the same whether the driving source is balanced or unbal-

anced.

 Connect the red (or white) wire to the pin on the XLR-type connector (#2 or #3)

that is considered H wire to the pin on the XLR-type connector (#3 or #2) that is considered L the standards of your organization.

 In low RF fields (like a studio site not co-located with an RF transmitter), connect

the cable shield at 6300 input only—it should not be connected at the source end. In high RF fields (like a transmitter site), also connect the shield to pin 1 of the male XLR-type connector at the 6300 input.

 If the output of the driving unit is unbalanced and does not have separate

HASSIS GROUND and (–) (or LOW) output terminals, connect both the shield and

the black wire to the common (–) or ground terminal of the driving unit.

IGH by the standards of your organization. Connect the black

OW by

Analog Audio Output

 Electronically balanced and floating outputs simulate a true transformer output.

The source impedance is 50. The output is capable of driving loads of 600 or higher; the 100% modulation level is adjustable with the AO a –6dBu to +24dBu range. The outputs are EMI suppressed.

100% control over

Page 55

OPTIMOD 6300 DIGITAL INSTALLATION

 If an unbalanced output is required (to drive unbalanced inputs of other equip-

ment), it should be taken between pin 2 and pin 3 of the XLR-type connector. Connect the L organization’s standards) to ground; take the H

OW pin of the XLR-type connector (#3 or #2, depending on your

IGH output from the remaining

pin. No special precautions are required even though one side of the output is grounded.

 Use two-conductor foil-shielded cable (Belden 8451, or equivalent).

 At the 6300’s output (and at the output of other equipment in the system), do

not connect the cable’s shield to the CHASSIS GROUND terminal (pin 1) on the XLR-type connector. Instead, connect the shield to the chassis ground at the input destination. Connect the red (or white) wire to the pin on the XLR-type connector (#2 or #3) that is considered H

IGH by the standards of your organization.

Connect the black wire to the pin on the XLR-type connector (#3 or #2) that is considered L

OW by the standards of your organization.

AES3 Digital Input and Output

2-7

There is one AES3 and two AES3 outputs. The program input and outputs are all equipped with sample rate converters and can operate at 32, 44.1, 48, 88.2, and 96 kHz. You can force the output sample rate to be genlocked to signal appearing at either the wordclock / AES11id input or the audio input. The output can also synchronize to the 6300’s internal clock.

Per the AES3 standard, each digital input or output line carries both the left and right stereo channels. The connection is 110 balanced. The AES3 standard specifies a maximum cable length of 100 meters. While almost any balanced, shielded cable will work for relatively short runs (5 meters or less), longer runs require used of 110 balanced cable like Belden 1800B, 1801B (plenum rated), multi-pair 180xF, 185xF, or 78xxA. Single-pair category 5, 5e, and 6 Ethernet cable will also work well if you do not require shielding. (In most cases, the tight balance of Category 5/5e/6 cable makes shielding unnecessary.)

The AES3id standard is best for very long cable runs (up to 1000 meters). This specifies 75 unbalanced coaxial cable, terminated in male BNC connectors. A 110/75 balun transformer is required to interface an AES3id connection to your Optimod’s digital program input or output. Conversely, the wordclock / AES11id sync input is designed for 75 operation.

The digital input clip level is fixed at 0 dB relative to the maximum digital word. The maximum digital input will make the 6300 input meters display 0dB. The reference level is adjustable using the DI

The 6300’s internal sample rate is 48 kHz. Because of “asynchronous resampling,” any output sample rate other than 48 kHz / internal sync can introduce overshoots.

If you need to use an STL with 32 kHz sample rate (because that is all that is available), you will achieve lowest overshoot by setting the 6300’s internal bandwidth to 15 kHz. That way, the 6300’s peak limiter operates

REF control.

Page 56

2-8

INSTALLATION ORBAN MODEL 6300

on a signal with 15 kHz bandwidth and subsequent sample rate conversion will not add overshoot caused by spectral truncation.

Wordclock / AES11id Sync Input

The sync input accepts a standard 5V p-p squarewave wordclock signal or an AES11id (75Ω) signal, selected in software. A menu item allows you to synchronize the output sample frequency to the frequency present at the sync. The connector is a female BNC with the shell grounded to chassis.

To permit daisy-chaining sync signals, the input impedance is greater than 1 K. If the 6300 is the last device driven by the sync coaxial cable, you should terminate it by using a BNC Tee connector and a 75 BNC terminator. This will prevent performance-degrading reflections in the cable. This is required for both wordclock and AES11id operation.

Grounding

Very often, grounding is approached in a “hit or miss” manner. However, with care it is possible to wire an audio studio so that it provides maximum protection from power faults and is free from ground loops (which induce hum and can cause oscillation).

In an ideal system:

 All units in the system should have balanced inputs. In a modern system with

low output impedances and high input impedances, a balanced input will provide common-mode rejection and prevent ground loops—regardless of whether it is driven from a balanced or unbalanced source.

The 6300 has balanced inputs.

 All equipment circuit grounds must be connected to each other; all equipment

chassis grounds must be connected together.

 In a low RF field, cable shields should be connected at one end only—preferably

the destination (input) end.

 In a high RF field, audio cable shields should be connected to a solid earth

ground at both ends to achieve best shielding against RFI.

Power Ground

 Ground the 6300 chassis through the third wire in the power cord. Proper

grounding techniques never leave equipment chassis unconnected to power / earth ground. A proper power ground is essential for safe operation. Lifting a chassis from power ground creates a potential safety hazard.

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OPTIMOD 6300 DIGITAL INSTALLATION

Circuit Ground

 To maintain the same potential in all equipment, the circuit (audio) grounds

must be connected together.

The 6300’s circuit and chassis ground are internally connected; there is no “ground lift” switch. This should never cause a problem with noise or ground loop hum if the 6300’s is connected to other equipment via balanced connections.

 In high RF fields, the system is usually grounded through the equipment rack in

which the 6300 is mounted. The rack should be connected to a solid earth ground by a wide copper strap—wire is completely ineffective at VHF because of the wire’s self-inductance.

Studio Level Controller Installation (optional)

[Skip this section if you are not using a studio level controller ahead of the 6300. Continue with “Quick Setup” on page 2-12. Note that this section has nothing to do

using the 6300 itself as a studio level controller. If you are doing this, see Using

with OPTIMOD 6300 as a Studio Level Controller on page 1-10.]

2-9

 As of this writing, the currently manufactured

as external AGCs are Optimod-PC 1101 and Optimod 6300. Their manuals contain instructions on how to use them in this application. They are the preferred choices because their AGCs are identical to the AGC in the 6300.

 Discontinued Orban products usable as external AGCs include the 8200ST, 464A

“Co-Operator,” 8100AST, and 1100 OPTIMOD-PC. In this manual, we do not provide step-by-step instructions for setting up all of these older products, although it should be easy to extrapolate from the instructions we do provide.

Orban products that can be used

If you are using Orban 8200ST Studio Level Controller

If the STL uses preemphasis, its input preemphasis network will probably introduce overshoots that will increase peak modulation without any increase in average modulation. We therefore strongly recommend that the STL transmitter’s preemphasis be defeated (freeing the STL from such potential overshoot), and that the 8200ST be used to provide the necessary preemphasis.

If the STL transmitter’s preemphasis cannot be defeated, then configure the 8200ST for flat output. In this case, average modulation levels of the STL may have to be reduced to accommodate the overshoots. These issues are extensively discussed starting on page 1-9.

1. Configure the 8200ST’s internal jumpers.

A) Remove all screws holding the 8200ST’s cover in place; then lift it off.

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INSTALLATION ORBAN MODEL 6300

JFJE

TOP OF MAIN BOARD

Clipper Jumpers

CLIPPER ON CLIPPER OFF

JA JA

OUTPUT

Figure 2-3: 8200ST Jumper Settings (*Factory Configuration)

OUTPUT

Line-up Level Jumpers

*PEAK AVG

LEFT

JB JC

RIGHT

OUTPUT

JAJB

Output Pre-Emphasis Jumpers

FLAT PRE-EMPHASIZED

LEFT

JE JF

LEFT

OUTPUT

JB JC

RIGHT

OUTPUT

RIGHT

OUTPUT

LEFT

OUTPUT

JE JF

RIGHT

OUTPUT

Page 59

OPTIMOD 6300 DIGITAL INSTALLATION

Refer to Figure 2-3 on page 2-10.

2-11

B) Place jumper JA in the C

C) If you have defeated the STL transmitter’s preemphasis, place jumpers JE and

JF in the P

D) If you cannot defeat the STL transmitter’s preemphasis, place jumpers JE and

JF in the F

E) Replace the top cover, and then replace all screws snugly. (Be careful not to

strip the threads by fastening the screws too tightly.)

2. Install the 8200ST in the rack. Connect the 8200ST’s audio input and out-

put.

Refer to the 8200ST Operating Manual if you require information about installation, audio input, and audio output connections to the 8200ST.

3. Set 8200ST Output Level with tone.

A) Press the TONE button on the 8200ST.

The TONE lamp should light and the modulation meters should indicate “0.” If they do not, re-strap jumpers JB and JC to “peak.” (Refer to Figure 2-3 on page 2-10.)

The peak level of this tone corresponds to 100% modulation.

RE-EMPHASIZED position.

LAT position.

8200ST is now producing a 400Hz sine wave at each output. The

LIPPER ON position.

B) Adjust the 8200ST’s L

ing driven to 100% modulation.

L OUT and R OUT controls are now correctly calibrated to the transmit-

The ter. If no significant overshoot occurs in the transmitter, the meter will now give an accurate indication of peak modulation of the STL.

C) Turn off the tone by pressing the T

If the STL transmitter suffers from bounce or overshoot, you may have to reduce the modulation caused by overshoots on certain audio signals.

4. Set controls for normal operation with program material.

The following assumes that a VU meter is used to determine 8200ST line drive levels with program material.

A) Set the controls as follows:

HF LIMITER.... Set to match the preemphasis of the transmission system

L&R Out ............................................................................... do not change

GATE ....................................................................................................12:00

RELEASE ............................................................................................... 12:00

VOICE ......................................................................................................OFF

L OUT and R OUT control settings to avoid peak over-

OUT and R OUT controls so that the STL transmitter is be-

MODULATION

ONE button.

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INSTALLATION ORBAN MODEL 6300

AGC ..........................................................................................................ON

COUPLE ....................................................................................................ON

B) Feed the 8200ST either with tone at your system reference level (0VU), or with

typical program material at normal levels.

C) Adjust the G

We recommend 8-15 dB gain reduction for most formats.

If the STL transmitter’s preemphasis cannot be defeated, configure the 8200ST for flat output. In this case, average modulation levels of the STL may have to be reduced to accommodate the overshoots.

AIN REDUCTION control for the desired amount of gain reduction.

Quick Setup

Quick Setup guides you through 6300 setup. It is appropriate for users without special or esoteric requirements. Following this section, you can find more detailed information regarding setup beyond the Quick Setup screens. In most cases, you will not need this extra information.

Quick Setup assumes that your 6300 will be driving flat channels because this is the most common scenario. If you need it, you can turn on pre-emphasis after you complete Quick Setup.

For the following adjustments, use the appropriately labeled soft button to choose the parameter you wish to adjust. To change a parameter (like an output level), it is usually necessary to hold down the soft button while turning the knob. However, if there is only one parameter on a screen, you can change this with the knob alone. (You do not have to hold down a button.) Let the text on the screen guide you through the process.

1. Press the front-panel Setup button.

2. Press the Quick Setup soft button when its label appears on the display.

Quick Setup presents a guided sequence of screens into which you must insert information about your particular requirements. In general, the screens are selfexplanatory.

Use the N flash to indicate that they are active.

3. Set the time.

A) Press the N

EXT and PREV buttons to navigate between screens. These buttons will

EXT button.

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OPTIMOD 6300 DIGITAL INSTALLATION

The set time screen appears.

B) Hold down the appropriate soft button while turning the knob to enter the

hour, minute, and seconds. Enter seconds slightly ahead of the correct time.

C) Wait until the entered time agrees with the correct time. Then press the

NTER TIME button to set the clock.

4. Set the date.

Hold down the appropriate soft button while turning the knob to enter the day, month, and year.

5. Set up Daylight Saving Time (Summer Time).

A) Turn the knob to specify the date at which Daylight Saving Time begins in

your area.

2-13

B) Press the N

C) Turn the knob to specify the date at which Daylight Saving Time ends in your

area.

6. Set the MAX LPF frequency as appropriate to your application.

[10.0 kHz] to [20.0 kHz]

The 6300’s audio bandwidth can be set in three places: (1) in Setup, (2) in the EQ page of the Modify screen, and (3) by remote control. The 6300’s bandwidth is always the lowest of these three settings. The frequency in Setup is a technical parameter that determines the highest bandwidth available. The installing engineer should set it to be congruent with the sample rate of the digital system being driven by the 6300. For example, if the 6300 is driving a system with a 32kHz sample rate, set the to 15.0 sive bandwidth and aliasing because the 6300 will automatically override it with the

7. Set external AGC mode.

Most of the processing structures in the 6300 control level with a preliminary AGC (Automatic Gain Control). If you are using a suitable Automatic Gain Control at the studio (such as an Orban 8200ST OPTIMOD-Studio or 464A CoOperator), the AGC in the 6300 should be defeated. This is so that the two AGCs do not “fight” each other, and so they do not simultaneously increase gain, resulting in increased noise.

EXT button.

MAX LPF

KHZ. That way, a setting of 20 kHz elsewhere will not cause exces-

MAX LPF setting.

A) Press the N

B) Set external AGC mode by turning the knob.

a) Set the field to Y

1101, 6300, 8200ST OPTIMOD-Studio, Orban 464A Co-Operator, or similar AGC) installed at your studio feeding the studio-to-transmitter link. This setting appropriately defeats the 6300’s AGC for all presets.

EXT button.

ES if you have an external AGC (such as an Orban 1100,

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INSTALLATION ORBAN MODEL 6300

b) Set the field to N

O If you do not have a external AGC installed; this setting

enables the 6300 AGC status to be determined by the selected preset.

If you are using an Orban 4000 Transmission Limiter, set field to NO (so that the AGC function in the 6300 continues to work). The Orban 4000 is intended for transmission system overload protection; it is normally operated below threshold. It is not designed to perform an AGC or gainriding function and it cannot substitute for the AGC function in the 6300.

8. Select your primary input (analog or digital).

A) Press the N

B) If your main input source is digital, turn the knob to select D

IGITAL+J17. Otherwise, select ANALOG.

EXT button.

IGITAL or

The only digital encoding that typically uses J.17 preemphasis (of which we are aware) is NICAM. D most anyone using the digital input.

IGITAL, not DIGITAL+J17, is appropriate for al-

9. Set operating levels.

You will set the operating levels of the 6300 to match the input levels it is receiving so the 6300’s AGC can operate in the range for which it was designed. There are separate settings for the analog and digital inputs. If you provide both analog and digital inputs to the 6300, optimum adjustment is achieved when the gain reduction meters show the same amount of processing for both analog and digital inputs.

This will allow you to switch between analog and digital inputs without sudden level changes.

A) Press the NEXT button.

B) Feed normal program material to the 6300.

C) Play program material from your studio, peaking at normal program levels

(typically 0VU if your console uses VU meters).

D) [Skip this step if you are not using the analog input.]

Hold down the A meter indicates an average of 10 dB gain reduction.

E) [Skip this step if you are not using the digital input.]

Hold down the D meter indicates an average of 10 dB gain reduction.

10. Set the analog output source.

Because of its versatile signal routing (see page 6-41), OPTIMOD 6300 can be

as a combined studio AGC, digital radio/netcast processor, and low-delay

used talent headphone processor. Its analog output is most commonly used for monitoring. If this output drives headphones for talent speaking live, it is best to bypass the look-ahead limiter for the chain you are using (AGC or Multiband). This reduces signal delay by about 16 ms. When you do this, input/output delay is ap-

NALOG soft button and adjust the knob so that the AGC

IGITAL soft button and adjust the knob so that the AGC

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OPTIMOD 6300 DIGITAL INSTALLATION

proximately 3 ms if you choose the AGC output and 5 ms if you choose the multiband compression output. Even though normal 6300 presets have a delay of about 20 ms (which most talent can learn to use without discomfort, although they may need some time to become accustomed to it), bypassing the lookahead limiter will reduce bone conduction comb filtering.

2-15

A) Press the N

EXT button.

B) [Skip this step if you will not be using the analog output.]

Turn the knob to choose one of the following processing chains for the analog output:

 AGC

 AGC+LIM

(stereo enhancement, equalization, and AGC without peak limiting)

(stereo enhancement, equalization, AGC, and look-ahead peak

limiting)

 MULTIBAND

(stereo enhancement, equalization, AGC, and 2-Band or 5-

Band compression without peak limiting)

 MB+LIM (stereo enhancement, equalization, AGC, 2-Band or 5-Band com-

pression, and look-ahead peak limiting)

If you set EXT AGC to YES in System Setup, this defeats the AGC. In this case, choosing:

AGC causes the input signal to be passed to the analog output with no dynamics processing (just stereo enhancement and equalization).

AGC+LIM

limiting.

MULTIBAND results in stereo enhancement, equalization, and 2-Band or 5-Band compression without AGC.

results in stereo enhancement, equalization, and look-ahead

MB+LIM results in stereo enhancement, equalization, and 2-Band or 5-

Band compression with look-ahead limiting but without AGC.

CAUTION: If the outputs are configured for no peak limiting, they are usually unsuited for driving a transmitter. An exception is an STL having 16 bits of dynamic range or more. In this case, it is often practical to drive it with the AGC alone, allowing additional headroom for the overshoots that the 6300’s peak limiter would have otherwise removed.

If you use the low-delay output to drive your studio monitor speakers as well as talent headphones (which may be necessary if your facility has only one monitor input for both), then we recommend connecting a lossof-carrier alarm to one of the 6300’s GPI inputs. Program this input to mute the monitor output in the event that carrier is lost. This simulates normal “off air” monitor functionality and immediately alerts the staff if the transmitter goes off the air unexpectedly.

You can program any GPI input for Monitor Mute functionality. See Remote Control Interface Programming on page 2-35 for instructions on how to program a GPI input.

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INSTALLATION ORBAN MODEL 6300

11. Set the digital output #1 source.

A) Press the N

EXT button.

B) [Skip this step if you will not be using digital output #1.]

Turn the knob to choose one of the following:

 AGC

 AGC+LIM

(stereo enhancement, equalization, and AGC without peak limiting)

(stereo enhancement, equalization, AGC, and look-ahead peak

limiting)

 MULTIBAND

(stereo enhancement, equalization, AGC, and 2-Band or 5-

Band compression without peak limiting)

 MB+LIM (stereo enhancement, equalization, AGC, 2-Band or 5-Band com-

pression, and look-ahead peak limiting)

See the notes for step 10 above.

12. Set the digital output #2 source.

A) Press the N

EXT button.

B) [Skip this step if you will not be using digital output #2.]

Turn the knob to choose one of the following:

 AGC

(stereo enhancement, equalization, and AGC without peak limiting)

 AGC+LIM

(stereo enhancement, equalization, AGC, and look-ahead peak

limiting)

 MULTIBAND

(stereo enhancement, equalization, AGC, and 2-Band or 5-

Band compression without peak limiting)

 MB+LIM (stereo enhancement, equalization, AGC, 2-Band or 5-Band com-

pression, and look-ahead peak limiting)

13. Set the digital output #1 sample rate.

A) Press the N

EXT button.

B) [Skip this step if you will not be using digital output #1.]

Turn the knob to set the Digital

OUTPUT #1 SAMPLE RATE to 32, 44.1, 48,

88.2, or 96 kHz.

The internal sample rate converter sets the rate at the 6300’s digital output. This adjustment allows you to set the output sample rate to ensure compatibility with equipment requiring a fixed sample rate. In all cases, the 6300’s internal processing sample rate is 48 kHz.

14. Set the digital output #2 sample rate.

A) Press the N

EXT button.

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OPTIMOD 6300 DIGITAL INSTALLATION

B) [Skip this step if you will not be using digital output #2.]

2-17

Turn the knob to set the Digital

OUTPUT #2 SAMPLE RATE to 32, 44.1, 48,

88.2, or 96 kHz.

15. Prepare to set output levels.

A) Press the N

EXT button.

You can use either program material or tone to set the output level (and thus, the modulation).

 To use tone, press the Y

ES button. Be careful—the 6300 will emit a loud

tone that could be disturbing to listeners.

 To use program material, press the N

O button.

16. Set the analog output level.

A) Press the N

EXT button.

B) [Skip this step if you are not using the analog output.]

Turn the knob to set the desired analog output level corresponding to 100% modulation, in units of dBu (0 dBu = 0.776 Vrms).

Refer to Setting Output/Modulation Levels on page 1-20.

If you have set the output source 2-14, the peak level will not be well controlled because no peak limiting has been applied.

to AGC or MULTIBAND in step 10 on page

17. Set the digital output #1 level.

A) Press the N

EXT button.

B) [Skip this step if you are not using digital output #1.]

Turn the knob to set the desired digital output #1 level corresponding to 100% modulation, in units of dB below full-scale.

18. Set the digital output #2 level.

A) Press the N

EXT button.

B) [Skip this step if you are not using digital output #2.]

Turn the knob to set the desired digital output level #2 corresponding to 100% modulation, in units of dB below full-scale.

C) Press the N

EXT button.

If you activated the modulation setup tone in step (15.A) on page 2-17, the tone will turn off automatically

D) Press the N

EXT button.

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INSTALLATION ORBAN MODEL 6300

19. Choose a processing preset.

A) Turn the knob until your desired preset is visible in the lower line of the dis-

play.

B) Press the R

This step selects the processing to complement various program formats. There are presets for radio-style and video style applications.

After this step, you can always select a different processing preset, program the 6300 to automatically change presets on a time / date schedule, use a GPI input to trigger preset changes, modify presets to customize your sound, and store these presets as User Presets.

Preset names are just suggestions. Feel free to audition different presets and to choose those whose sound you prefer.

You can easily modify a preset later with the 6300’s one-knob L feature. Refer to Section 3.

Congratulations! You are now on the air with your initial sound. Feel free to read the material in Section 3 of this manual, which describes the various presets and how you can customize them to achieve your desired signature sound.

20. Complete Station ID (optional).

The Station ID is an optional setting that you can provide to name a given 6300. The name can be up to eight characters long. It is used to identify your 6300 to Orban’s 6300 PC Remote application and appears on the Main Screen when PC Remote is controlling the 6300.

A) Navigate to S

ECALL NEXT button to make your desired preset active.

ESS-MORE

ETUP > NEXT > TIME DATE AND ID > STATION ID.

B) Use the knob to set the each character in the ID. Use the N

tons to control the cursor position.

C) When finished entering your name, press the SAVE button. If you escape to

the main screen from Setup, you can now see the station name toggle on the main screen.

21. Set up response to AES3 status bits (optional).

The default behavior of the 6300 is to ignore AES status bits because many pieces of external equipment handle these incorrectly. However, the 6300 allows the AES3 “channel mode” determine its operating mode (stereo or dual-mono). The AES3 channel mode specification provides for “two-channel mode” (corresponding to 6300 dual-mono mode) with bits 1-4 in byte 1 in the pattern “0001,” and “stereophonic mode” (corresponding to 6300 stereo mode) with these bits in the pattern “0100.”

The 6300 can also emit these status bits at its digital output to control downstream equipment.

A) Navigate to S

AES.

ETUP > IO CALIB > DIG OUT CALIB and set the DIGITAL FORMAT to

EXT and PREV but-

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OPTIMOD 6300 DIGITAL INSTALLATION

SPDIF cannot be used to handle status bit because the specification does not allow it.

B) To enable the 6300 to change its operating mode in response to AES status

bits received at its AES input:

2-19

 Navigate to S

 Set I

N>MODE to ON.

Unless you are sure that upstream equipment will correctly format these bits, set

ETUP > NETWORK&REMOTE > AES STAT BITS.

IN>MODE to OFF.

 Make sure that the equipment driving the 6300 is formatting its output as

AES3. SPDIF will not work.

C) To send “two-channel mode” and “stereophonic mode” bits indicating the

6300's current operating mode, set M

If this parameter is set to OFF, then the 6300 will output “0000” (“mode not indicated’). This is probably the safest available mode if you are uncertain whether downstream equipment can respond appropriately to these bits.

ODE>OUT to ON.

22. Set up response to AES3 user bits (optional).

The 6300 can pass AES user bits from its input to digital output #1. The default behavior is to block these bits because they may cause downstream equipment to respond in unexpected ways. Because the vast majority of audio applications make no use of User Bits, we recommend keeping the 6300's U set to B

LOCK (default setting), which configures the User Bit channels of both

SER BITS control

Digital Out 1 and Digital Out 2 to contain all zeros.

Setting the 6300's U

SER BITS control to PASS DO1 will cause the User Bit channel

of Digital Out 1 to be filled with the bits received from the User Bit channel of the signal feeding the 6300's Digital In. We recommend such setting only if your facility requires it and all three of the following conditions are met:

 The sample rate of your digital source (feeding 6300's Digital In) is no higher

than 48kHz

 6300 DO1

SYNC setting = INPUT

 6300 IN>MODE setting = O

Unless all of the above conditions are met, the user bit passthrough may lose data.

To enable the 6300 to pass user bits from its digital input to its digital output, navigate to S the field to P

ETUP > NETWORK&REMOTE > AES STAT BITS > AES USER BITS and set

ASS or BLOCK as desired.

Unless you are sure that downstream equipment will correctly format these bits, set AES

User bits can only be passed if the 6300’s digital output is set to AES, not

SPDIF.

USER BITS to BLOCK.

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INSTALLATION ORBAN MODEL 6300

23. Set the Processing Delay for a given signal path (optional).

[minimum], [30 fps], [29.97 fps], [25 fps], [24 fps], [33-50 ms in 1 ms increments]

You can set the delay through the AGC+LIMIT pendently. This feature is usually used in sound-for-picture applications to add time delay so that the input/output delay through a given processing path is exactly one frame, using a variety of different standards. The selections are

INIMUM (depends on processing structure in use; typically between 20 and 23

ms), 30 fps, 29.97 fps (NTSC color video), 25 fps (most PAL video), and 24 fps (film). You can also set the delay in 1 millisecond increments.

Navigate to S the AGC+L

Note that this control does not affect the delay to a given output if that output is in AGC or M

24. Set the main display mode (optional).

You can choose how the main display indicates active operating parameters by navigating to S matically once every two seconds, displaying the largest range of information. Choose N tive input, and whether the stereo or dual-mono mode is active.

The following material provides detailed instructions on how to set up the 6300. If QUICK SETUP does not fully address your setup needs or if you wish to customize your system beyond those provided with QUICK SETUP, then you may need the additional information in the sections below. However, for most users, this material is only for reference because QUICK SETUP has enabled them to set up the 6300 correctly.

ETUP > I/O CALIB > PROC DELAY and set the delay as required using

IMIT and MB+LIMIT buttons.

ULTIBAND mode.

ETUP > SHOW DATE. Choose YES to make the display toggle auto-

O to make the display static, showing the time, the active preset, the ac-

and MB+LIMIT signal paths inde-

Analog and Digital I/O Setup

For the following adjustments, use the appropriately labeled soft button to choose the parameter to be adjusted. To change a parameter (like an output level), it is usually necessary to hold down the soft button while turning the knob.

1. Set the MAX LPF frequency as appropriate to your application.

[10.0 kHz] to [20.0 kHz]; 1 kHz steps

The 6300’s lowpass filter is located before any dynamics processing and affects all outputs equally. It is a phase-linear FIR filter.

The 6300’s audio bandwidth can be set in three places: (1) in Setup, (2) by remote control, and (3) in the EQ page of the Modify screen. (The latter allows the active preset to determine the bandwidth so you can change the bandwidth by recalling a User Preset.)

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OPTIMOD 6300 DIGITAL INSTALLATION

The 6300’s bandwidth is always the lowest of these three settings. The frequency in Setup is a technical parameter that determines the highest bandwidth available. The installing engineer should set it to be congruent with the sample rate of the digital system that the 6300 is driving. For example, if the 6300 is driving a system with a 32 kHz sample rate, set the

MAX

LPF to 15.0 KHZ. That way, a setting of 20 kHz elsewhere will not

cause excessive bandwidth and aliasing because the 6300 will automatically override it with the MAX

LPF setting.

A) Navigate to SETUP > MAX LPF

B) Set the maximum bandwidth as desired.

2. Temporarily set the external AGC mode to “No.”

2-21

Navigate to S

If you are using a external AGC like the Orban 8200ST, you should restore this setting to Y

ETUP > NEXT > NEXT > EXT AGC and set EXT AGC to NO.

ES after the setup procedure is complete.

3. Adjust Input selector.

A) Navigate to S

B) Set the I

ETUP > IO CALIB > INPUT.

NPUT to ANALOG.

The 6300 will automatically switch to analog input if signal lock is unavailable at the AES3 input.

4. Adjust Analog Input Reference Level.



9dBu to +13dBu (VU), or –2 to +20dBu (PPM)] in 0.5 dB steps

[

The reference level VU and PPM (Peak) settings track each other with an offset of 8dB. This compensates for the typical indications with program material of a VU meter versus the higher indications on a PPM.

This step sets the center of the 6300’s gain reduction range to the level to which your studio operators peak their program material on the studio meters. This assures that the 6300’s processing presets will operate in their preferred range.

You may adjust this level with a standard reference / line-up level tone from your studio or with program material.

Note that in this step, you are calibrating to the normal indication of the studio meters; this is quite different from the actual peak level.

If you know the reference VU or PPM level that will be presented to the 6300, set the reference level to this level, but please verify it with the steps shown directly below.

A) Press the R

ECALL button.

B) Turn the knob until 5B

play.

C) Press the R

ECALL NEXT button.

GENERAL PURP appears in the lower line of the dis-

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INSTALLATION ORBAN MODEL 6300

D) Navigate to S

ETUP > ANALOG CALIB > AI REF (VU or PPM, depending on which

metering system you use).

E) Calibrate using tone.

[Skip to step (F) if you are using Program material to calibrate the 6300 to your standard studio level.]

a) Verify E

XT AGC is set to NO.

Refer to step 2 on page 2-21.

b) Feed a tone at your reference level to the 6300

If you are not using a studio level controller, feed a tone through your console at normal program levels (typically 0VU if your console uses VU meters).

If you are using a studio level controller that performs an AGC function, such as an Orban 8200ST OPTIMOD-Studio, adjust it for normal operation.

c) Adjust the AI REF (VU or PPM) control to make the 6300’s AGC meter

indicate 10 dB gain reduction.

d) Skip to step (G).

F) Calibrate using program.

this step if you are using Tone to calibrate the 6300 to your stan-

[Skip dard studio level—see step (E) above.]

a) Verify E

XT AGC is set to NO.

Refer to step 2 on page 2-21.

b) Feed normal program material to the 6300

Play program material from your studio, peaking at the level to which you normally peak program material (typically 0VU if your console uses VU meters).

c) Adjust the AI REF (VU or PPM) control to make the 6300’s AGC meters

indicate an average of 10 dB gain reduction when the console’s VU meter or PPM is peaking at its normal level.

If the AGC gain reduction meter averages less than 10 dB gain reduction (higher on the meter), re-adjust the AI

If the AGC gain reduction meter averages more gain reduction (lower on the meter), re-adjust the AI

G) When finished, reset EXT AGC to YES, if required (e.g., if that was its setting

prior to setting AI

Refer to step 2 on page 2-21.

5. Adjust Right Channel Balance.

[Skip this step if the channels are already satisfactorily balanced.]

REF (VU or PPM) to a lower level.

REF (VU or PPM) to a higher level.

REF (VU or PPM) level).

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OPTIMOD 6300 DIGITAL INSTALLATION

[3 dB to +3dB] on right channel only, 0.1 dB steps

2-23

Adjust the R

CH BAL control (SETUP > IO CALIB > ANALOG CALIB > R CH BAL) to

achieve correct left/right channel balance.

This is not a balance control like those found in consumer audio products. This control changes gain of the right channel only. Use this control if the right analog input to the 6300 is not at exactly the same level as the left input. Be certain that the imbalance is not caused by one program source, but instead is introduced through distribution between the console output and 6300 input. This adjustment is best accomplished by playing program material that is known to be monophonic or by setting the mixing console into mono mode (if available).

6. Adjust the Digital Input Reference Level and Right Balance controls.

[Skip this step if you will not be using the digital input.]

A) Navigate to Navigate to S

B) Repeat steps 2 through 5 (starting on page 2-21), but use the DI

ETUP > IO CALIB > INPUT and set the input to Digital.

REF (VU OR

PPM) and R CH BAL controls for the digital section.

7. Set AGC preemphasis.

A) Navigate to S

B) Select the desired AGC preemphasis (F

This control is only relevant if you are using the AGC+LIM feed at one or more 6300 outputs. The control determines whether the look-ahead limiter after the AGC operates on a flat or preemphasized signal.

ETUP > NEXT > NEXT > AGC PRE-E

LAT, 50S or 75S) by turning the knob.

50S and 75S preemphasis are only useful if the 6300 is protecting a transmission link that uses preemphasis (like certain satellite uplinks). Use

LAT preemphasis for Eureka 147, DRM, HD Radio, digital television, net-

casts, and any other channel that uses a lossy codec. When in doubt, use

LAT preemphasis.

When operated pre-emphasized, the 6300’s AGC look-ahead limiter should only provide light protection limiting. If you use too much gain reduction in the look-ahead limiter, you will hear pumping on material with a lot of high frequency energy.

8. Set Multiband preemphasis.

A) Navigate to S

ETUP > NEXT > NEXT > MB PRE-E

B) Select the desired multiband preemphasis (50S or 75S) by turning the knob.

This control is only relevant if you are using the MB+LIM feed at one or more 6300 outputs. The control determines whether the look-ahead limiter after the 2-band or 5-band compressor operates on a flat or preemphasized signal.

50S and 75S preemphasis are only useful if the 6300 is protecting a transmission link that uses preemphasis (like certain satellite uplinks). Use

LAT preemphasis for Eureka 147, DRM, HD Radio, digital television, net-

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INSTALLATION ORBAN MODEL 6300

casts, and any other channel that uses a lossy codec. When in doubt, use

LAT preemphasis.

When operated pre-emphasized, the 6300’s MB look-ahead limiter should only for light protection limiting. If you use too much gain reduction in the look-ahead limiter, you will hear pumping on material with a lot of high frequency energy. The 6300 cannot process for high loudness on pre-emphasized radio channels. Use an Orban Optimod-FM for such applications.

9. Set analog output and configuration level.

A) Navigate to S

ETUP > IO CALIB > ANALOG CALIB > ANLG OUT > AO SOURCE and set

the analog output source to:

 AGC

 AGC+LIM

(stereo enhancement, equalization, and AGC without peak limiting)

(stereo enhancement, equalization, AGC, and look-ahead peak

limiting)

 MULTIBAND

(stereo enhancement, equalization, AGC, and 2-Band or 5-

Band compression without peak limiting)

 MB+LIM (stereo enhancement, equalization, AGC, 2-Band or 5-Band com-

pression, and look-ahead peak limiting)

See step 10 on page 2-14.

B) Navigate to SETUP > IO CALIB > ANALOG CALIB > ANLG OUT > AO PRE-E. Set the

analog output preemphasis to P

When in doubt, choose FLAT. This is correct for a great majority of 6300 applications.

If you are sending the analog output of the 6300 through a digital link that uses a lossy codec like MPEG, APT-X, or Dolby, set the output F Lossy codecs cannot handle pre-emphasized signals.

If you intend to use the analog output for headphones, set the output

LAT.

RE-E (for preemphasis) or FLAT.

LAT.

If you choose P emit either the AGC+LIM signal or the MB+LIM signal monitoring [see step (A) above].

If you emit the AGC+LIM signal, peak levels will only be controlled if set the AGC preemphasis to 50S or 75S in step 7 on page 2-23. This is the only way to make the look-ahead limiter aware of the preemphasis.

If you emit the MB+LIM signal, peak levels will set the multiband preemphasis to 50S or 75S in step 8 on page 2-23.

If you are driving a pre-emphasized channel and can bypass the internal preemphasis filter, use P channel’s preemphasis filter or if you will use the analog output for monitoring, set the output F

NOTE: If the 6300 is set to emit either the AGC or M choosing P

RE-E in this step, you must configure the analog output to

you

only be controlled if you

channel’s

RE. However, if you cannot defeat the

LAT.

ULTIBAND signals,

RE-E in the current step will cause very poor peak level control

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OPTIMOD 6300 DIGITAL INSTALLATION

because there is no preemphasis-aware peak limiting anywhere in the system and because the preemphasis filter before the output will cause peak level to increase markedly.

C) You can use either program material or tone to set your output level (and

thus, your modulation). If you want to use tone, turn on the 400Hz calibration tone. To do this:

2-25

a) Navigate to S

b) Set the M

c) Set T

d) Set T

ONE FREQ to 400 HZ.

ONE LVL to 100%.

e) Press the N

f) Set T

ONE CHAN to L+R.

ETUP > TEST.

ODE to TONE.

EXT key.

g) When you have finished with the tone, set the M

D) Using the AO

100% button, set the desired analog output level corresponding

to 100% modulation, using units of dBu (0 dBu = 0.776 V rms).

Refer to Setting Output/Modulation Levels on page 1-20.

If you have chosen AGC or M will not be well controlled because no peak limiting has been applied to this signal.

If you are using program material, make sure that the program material is loud enough to produce peaks of frequent recurrence that cause the 6300’s look-ahead limiters to produce gain reduction, thereby defining the maximum peak level that the 6300 will produce.

ULTIBAND in step (A) above, the peak level

10. Set digital configuration and output level.

ODE to OPERATE.

[Skip this step if you will not be using the digital outputs.]

[See the notes in step (9.D) on page 2-25.]

A) Skip this step if you do not plan to

sync the 6300’s digital output(s) to an ex-

ternal AES11 or wordclock signal.

Navigate to Setup > IO Calib > Digital Calib. If the Ext Sync control is not visible, press Next until the control appears. Set the control for AES or Wordclock, as required.

B) Navigate to S

C) Set the DO1

(for a J.17 pre-emphasized output), PRE+J17 (for 50 or 75µs preemphasis

J.17

cascaded with J.17 preemphasis), or F

See the notes in step (9.B) on page 2-24.

J.17 preemphasis is rarely used anymore. Its most common application is NICAM links.

ETUP > IO CALIB > DIGITAL CALIB > DO1 CALIB.

PRE-E control to PRE-E (for a 50 or 75µs pre-emphasized output),

LAT.

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INSTALLATION ORBAN MODEL 6300

D) Set the DO1

RATE to 32, 44.1, 48, 88.2, or 96 kHz.

 If you are using I

NTERNAL sync [step (E) below], 48 kHz or 96 kHz are pre-

ferred because their samples are synchronous with the peak-controlled samples in the processing. If you are using external sync, this special relationship no longer holds.

 Selecting a 32 kHz output sample rate will automatically set the highest

available audio bandwidth to 15 kHz.



DO RATE will also affect the available range of test tone frequencies. When DO RATE is set to 32 kHz, the highest tone frequency setting is 15kHz. When DO RATE is set to 44.1 or above, the tone frequency range extends to 20 kHz.

E) Set the DO1

NTERNAL (the output sample rate is synchronized to the 6300’s internal crys-

 I

SYNC. Choose:

tal-controlled clock),

 I

NPUT (the output sample rate is synchronized to the sample rate appearing

at the 6300’s AES3 input), or

 E

XTERNAL (the output sample rate is synchronized to the sample rate ap-

pearing at the 6300’s BNC sync input when an AES11 signal or a wordclock drives it). (See step (A) above.)

F) Press N

EXT. Then set the desired output DO1 WORD (word length).

[14], [16], [18], [20], or [24], in bits

The largest valid word length in the 6300 is 24 bits

The 6300 can also truncate its output word length to 20, 18, 16 or 14 bits. The 6300 can add dither (see the next step).

G) Adjust DO1 DITH (dither) to IN or OUT, as desired.

[In] or [Out]

When set to In, the 6300 adds “high-pass” dither before any truncation of the output word. The amount of dither automatically tracks the setting of the W erably reduces added noise in the midrange by comparison to white PDF dither. However, unlike extreme noise shaping, it adds a maximum of 3 dB of excess total noise power when compared to white PDF dither. Thus, it is a good compromise between white PDF dither and extreme noise shaping.

To ensure maximum system linearity, it is wise to set this control to I

ORD LEN control. This first-order noise shaped dither consid-

H) Set DO1 FRMT to AES or SPDIF

I) Using the DO1

 AGC

(stereo enhancement, equalization, and AGC without peak limiting)

 AGC+LIM

SOURCE button, set the digital 1 output source to:

(stereo enhancement, equalization, AGC, and look-ahead peak

limiting)

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OPTIMOD 6300 DIGITAL INSTALLATION

 MULTIBAND (stereo enhancement, equalization, AGC, and 2-Band or 5-

Band compression without peak limiting)

 MB+LIM (stereo enhancement, equalization, AGC, 2-Band or 5-Band com-

pression, and look-ahead peak limiting)

See step 10 on page 2-14.

J) Press NEXT. Then set the DO1 EMITS parameter to STEREO/DUAL or MONO L.

STEREO/DUAL is the normal setting. MONO L is for convenience if you are using the 6300 to process two independent mono programs and you wish assign each program to a separate digital output. In this case, both channels of DO1 emit the mono material processed in the 6300’s left channel and both channels of DO2 emit the right channel material.

K) Press NEXT. Then adjust DO1 100% set the desired digital output level corre-

sponding to 100% modulation, in units of dB below full-scale.

See the notes in step (9.D) on page 2-25.

L) Navigate to SETUP > IO CALIB > DIGITAL CALIB > DO2 CALIB and repeat steps (A)

through (K) for Digital Output 2.

2-27

11. Set the 6300’s response to AES3 status bits.

See step (B) on page 2-19.

12. Choose whether the 6300 digital output will emit status bits depending

on whether the 6300 is in stereo or dual mono modes.

See step (C) on page 2-19.

13. Choose whether the 6300’s will pass or block AES3 user bits.

See step 22 on page 2-19.

14. End Analog and Digital I/

If you are using a external AGC and you temporarily set the E step 2 on page 2-21, set the E

15. Select a processing preset.

See step (18.C) on page 2-17.

16. Program Silence Sense (optional)

can program the 6300 to switch automatically from its digital input to its

You analog inputs if the I input falls silent.

O setup.

XT AGC to NO in

XT AGC to YES.

NPUT SOURCE is set to DIGITAL and the signal at the digital

There are two silence detectors, one for the analog input and one for the digital input. The silence sense parameters apply to both simultaneously. Both detectors are available to drive the 6300's tally outputs but only the

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INSTALLATION ORBAN MODEL 6300

“digital input” silence detector is used for automatic input switching. (See step 17 below.)

Silence sense will be activated if either channel falls silent, thus also protecting against “loss-of-one-stereo-channel” faults.

If silence is detected at the analog input as well as the digital input (as in the case of a studio operational fault), automatic switching will not occur.

When an active signal is restored to the digital input, the 6300 will automatically switch back to that input.

This feature is unavailable in the 6300's audio processing mode.

A) Navigate to SETUP > TALLY > SILENCE THRESHOLD and set the Silence Threshold

to the level below which the 6300 will interpret the input as being silent.

This setting is with respect to the current analog reference level and digital reference level.

B) Press NEXT as necessary to see the SILENCE DELAY control. Set it to the amount

of time that the input must be below the Silence Threshold before the 6300 automatically switches to the analog input.

C) Press N

EXT as necessary to see the ANALOG FALLBACK control. Set it to YES if you

wish the 6300 to switch automatically from the digital to analog input when silence is detected. Set the control to N

O to defeat automatic switching.

17. Program Tally Outputs.

[Skip this step if you do not wish to use the tally outputs.]

See step 6 on page 2-4 for wiring instructions.

can program the two tally outputs to indicate a number of different opera-

You tional and fault conditions.

A) Navigate to S

ETUP > TALLY > TALLY OUT1.

B) Program tally output #1.

To program a given tally output, press and hold the soft button associated with the output you are programming. As you turn the control knob, the functions listed below will appear in the highlighted field.

 Input: Analog: Indicates that the 6300 is processing audio from its analog

input.

 Input: Digital: Indicates that the 6300 is processing audio from its AES3

digital input.

 Analog Input Silent: Indicates that the level at either or both analog in-

put channels is below the threshold set in step 16 on page 2-28.

 AES Input Silent: Indicates that the level at either or both digital input

channels is below the threshold set in step 16 on page 2-28.

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OPTIMOD 6300 DIGITAL INSTALLATION

 AES Input Error: Indicates that the 6300's AES input receiver chip has de-

tected that the input data is unusable. When the chip detects such an error, it automatically switches the in-put to ANALOG.

 No Function: Tally output is disabled.

C) Program tally output #2 if you wish, following the procedure in step (B) above

with the T

ALLY OUT2 button.

Automation Using the 6300’s Internal Clock

1. If you have not already done so, set the system clock.

[You can also set the clock automatically via PC Remote or the Internet. See Synchronizing Optimod to a Network Time Server starting on page 2-38.]

2-29

A) Navigate to S

ETUP > NEXT > TIME DATE AND ID > SET TIME.

a) Set hours and minutes.

b) Enter seconds slightly ahead of the correct time.

c) Wait until the entered time agrees with the correct time. Then press the

ENTER TIME button to set the clock.

B) Press the S

ET DATE button.

a) Set today’s date, using the days, month, and year buttons.

b) Press the E

C) Press the D

a) Using the Daylight Saving (DT

and week when Daylight Saving Time (Summer Time) begins, or O

b) Using the Standard Time (ST

NTER DATE button.

AYLIGHT TIME button.

MONTH and DT WEEK) buttons, set the month

FF.

MONTH and ST WEEK) buttons, set the month

and week when Daylight Saving Time (Summer Time) ends.

Note that setting DT MONTH, DT WEEK, ST MONTH, or ST WEEK to OFF will defeat Daylight Time functionality.

c) Press the Escape key to back out of the daylight saving screen.

D) (Optional) Press the S

TATION ID button to specify your station’s identifier (call

sign or call letters).

a) Use the knob to select characters. Use the P

the cursor.

b) When you are finished, press S

2. Navigate to Setup > Next > Automation.

If the A

UTOMATION button reads DISABLED, hold it down and turn the knob to en-

able automation.

REV and NEXT buttons to move

AVE.

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INSTALLATION ORBAN MODEL 6300

This button allows you to easily enable or disable all automation events without having to edit individual automation events.

3. To add an automation event:

A) Push the A

DD EVENT button.

B) Choose whether you wish to program an event that occurs only once or an

event that follows a daily or weekly schedule.

C) For events that occur only once:

a) Use the

and turn the knob so that is reads “

b) Use the P

PREV and NEXT buttons to move the cursor over the word “DAILY:”

DATE:” instead.

REV and NEXT buttons to move the cursor to the day, month, and

year when the automation event will occur. Set the desired values with the knob.

c) Use the P

REV and NEXT buttons to move the cursor set the hour, minute,

and second (in 24-hour format) when the automation event is to occur. Set the desired values with the knob.

D) For events that occur on a daily or weekly schedule:

a) Use the P

REV and NEXT buttons to move the cursor the each day of the

week in turn, and use the rotary encoder to turn the day on or off.

You can program the event to occur on as many days of the week as you wish.

b) Use the PREV and NEXT buttons to move the cursor set the hour, minute,

and second (in 24-hour format—e.g., 18:00:00 for 6:00 PM) when the automation event is to occur. Set the desired values with the knob.

Automation events have a “start” time but no “stop” time. The 6300 will indefinitely remain in the state specified by an existing automation event until its state is changed by another automation event or by another action (such as a user’s interacting with the front panel or PC Remote software).

E) For all events:

a) Press the

SELECT EVENT button.

b) Turn the knob to set the desired event. The available events are:

 Recall factory preset

 Recall user preset

 stereo mode

 dual-mono

This mode processes the two input channels independently.

(DUALMONO) mode

 bypass mode

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OPTIMOD 6300 DIGITAL INSTALLATION

 exit test (restores the operating preset that was active before a test

mode was invoked)

2-31

F) When you have programmed an event to your satisfaction, press the S

EVENT button.

You will return to the automation menu.

4. To edit an existing event:

A) Press the V

B) Turn the knob until you see the event you wish to edit.

C) Press the E

D) Edit the event as desired. Use the same technique as adding an event.

E) Press the SAVE EVENT button to store your edits.

5. To delete an event:

A) Press the D

B) Choose the event to delete with the knob.

You can search by date or by event (i.e., recalling a given preset). Use the

EXT button to navigate from one type of search to the other type.

C) When you have located the event you want to remove, press the D

EVENT button.

IEW > EDIT EVENT button.

DIT EVENT button.

See step 3 on page 2-30.

ELETE EVENT button.

AVE

ELETE

This action will immediately delete the event. There is no “are you sure” warning message. To abort the deletion, press the E

ELETE EVENT button.

SC button, not the

Security and Passcode Programming

[Skip this step if you do not plan to use PC Remote software or do not plan to lock out the front panel locally.]

Your Optimod has several levels of security to prevent unauthorized people from changing its programming or operating state. Security controls access to the front panel and to anyone connecting to the Optimod through a direct serial connection, dial-up networking (through modems), or its Ethernet port.

The security levels are:

1. All Screens (i.e., administrator level)

2. All Screens except Security

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INSTALLATION ORBAN MODEL 6300

3. All screens except Modify and Security

4. Presets, Modify, Save, Memory, and Automation

5. Presets and Automation

6. Presets

There is no default passcode. The Optimod’s front panel cannot be locked out unless the Optimod has been assigned at least one All Access

passcode.

Your Optimod secures User Presets by encrypting them (using the Advanced Encryption Standard algorithm with the session passcode as its key) when PC Remote fetches them. Hence, a packet sniffer cannot intercept User Presets in plaintext form. PC Remote then writes the fetched User Presets in encrypted form on your hard drive, where they remain for the duration of your PC Remote session.

If PC Remote exits normally, it will erase these temporary User Preset files from your computer’s hard disk. If it does not exit normally, these files will remain in encrypted form. However, the next time that PC Remote starts up, it will automatically clean up any orphaned files.

To Create a Passcode:

A) Navigate to SETUP > SECURITY > ADD PASSCODES.

If the front panel is already password protected, you can only access this screen by entering a passcode with All Access privileges.

B) Use the four soft buttons, labeled“1,” “2,” “3,” and “4,” to create a passcode.

Passcodes can be up to eight characters long but can only contain the characters “1,” “2,” “3,” and “4.” This limitation makes it easy to enter a passcode using the four available soft buttons.

C) When you have finished entering your new passcode, write it down so you do

not forget it. Then press the N

If you wish to discard the passcode you just entered, press the ESC button instead. Then return to step (B).

D) The PERMISSIONS screen appears. Turn the knob to choose the permission level

for the passcode you just created.

If you wish to discard the passcode you just entered, press the PREV button to return to the Enter Passcode screen or E rity screen.

E) Press the NEXT button to save your new passcode.

EXT button.

SC to return to the Secu-

To Edit a Passcode:

A) Navigate to S

If the front panel is already password protected, you can only access this screen by entering a passcode with A

ETUP > SECURITY > VIEW-EDIT PASSCODES.

LL ACCESS privileges.

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OPTIMOD 6300 DIGITAL INSTALLATION

B) Turn the knob until you see the passcode you want to edit.

2-33

C) Press the N

EXT button. The Permissions screen appears.

D) Turn the knob to set the desired permission level for the passcode you are ed-

iting.

E) Press the N

EXT button to confirm your choice.

Your new permission level is stored and the Security menu appears.

To Delete a Passcode:

A) Navigate to SETUP > SECURITY > DELETE PASSCODES.

If the front panel is already password protected, you can only access this screen by entering a passcode with All Access privileges.

B) Turn the knob until you see the passcode you want to delete.

C) Press the N

D) Press the Y

EXT button. The Confirm Delete screen appears.

ES soft button to delete the passcode. Press the NO or ESCAPE

buttons to abort deleting the passcode.

To Lock the Front Panel Immediately:

After you have adjusted the processor, to maximize security you will often want to lock it immediately without waiting for the timeout. To do so:

A) Press the S

B) Press the L

ETUP button.

OCK NOW soft button.

To Program local lockout:

A) Navigate to SETUP > SECURITY.

If the front panel is already password protected, you can only access this screen by entering a passcode with A

B) Hold down the AUTOLOCK soft button and turn the knob to set the desired

lockout time (if any).

You can program the lockout delay time (in hours:minutes) from 15 minutes to 8 hours, or O local front panel control and when the front panel automatically locks itself out, requiring entering a passcode to obtain front panel control of the 6300.

Autolock can only be turned on if at least one passcode exists with A ACCESS privileges because an ALL ACCESS passcode is required to fully unlock the panel or to turn off the Autolock function.

FF. This is the time delay between the last access to a

C) Press the ESCAPE button to leave the Security menu.

LL ACCESS privileges.

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INSTALLATION ORBAN MODEL 6300

To Unlock the Front Panel:

A) On the 6300 front panel, operate any button or the knob.

The P

ASSCODE screen will appear.

B) Enter a passcode using the four soft buttons.

The 6300 functionality that you can access depends on the security level of the passcode that you entered.

After you have finished working, the panel will automatically re-lock after the time delay you set in S new delay at any time if you have an A

ETUP > SECURITY > AUTOLOCK. (You can set a

LL ACCESS passcode.)

Dial-up Networking and the Passcode

When you make a Windows Dial-up Networking connection, Windows will ask you for your passcode. To allow the connection to occur, enter any passcode that you set at the 6300’s front panel. Once your PC is connected to the 6300, you will be able to access the 6300 functionality corresponding to the security level of your passcode.

If You Have Forgotten Your Passcode

You can reset factory defaults and wipe out security passcodes (in case you forgot your A

LL ACCESS passcode).

A) Remove power from the 6300.

B) While pressing both the E

The Restore Defaults screen appears.

C) To gain access to the 6300, press the E

D) Reprogram passcodes as necessary; see To Create a Passcode on page 2-32.

The R

ESTORE DEFAULTS button (in the Restore Defaults screen) restores all

System Setup and Input/output parameters to their factory default settings. It also erases all passcodes. You should never need to use this button in an existing installation, although it is a convenient way to make the 6300 “factory fresh” if it is being installed in a different facility.

ESTORE DEFAULTS button takes you to a screen that allows you to

The R keep or erase any user presets that exist in your unit.

SCAPE and SETUP buttons, restore power.

RASE ALL PASSCODES soft button.

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OPTIMOD 6300 DIGITAL INSTALLATION

Remote Control Interface Programming

[Skip this step if you do not wish to program the GPI (contact closure) remote control interface.]

2-35

1. Navigate to S

2. Program one or more remote control interfaces.

A) Navigate to the desired Remote Interface button (1 through 4) by repeatedly

pressing the N

B) Hold down the button while turning the knob to select the desired function

for the interface.

Use either button below the appropriate graphics; both work the same.

A momentary pulse of voltage will switch most functions, except as noted.

 Preset Name: switches the named preset on the air. The control interface

can recall any factory or user preset.

 Input: Analog: selects the analog inputs.

 Input: Digital: selects the digital input and but does not apply deempha-

sis to it.

 Input: Digital+J.17: selects the digital input and applies J.17 deemphasis

to it.

 Bypass: switches the Bypass Test Mode on the air.

ETUP > NEXT > NETWORK & REMOTE > REMOTE INTERFACE.

EXT button.

 Tone: switches the Tone Test Mode preset on the air.

 Exit Test: If a test preset is presently on the air, EXIT

previous processing preset.

 Stereo: connects the 6300’s left and right inputs to the left and right in-

puts of the processing and stereo-couples the processing.

 Dual Mono: connects the 6300’s left and right inputs to the left and right

inputs of the processing and removes all stereo coupling from the processing so that the two channels of the processing operate as independent processors, sharing only the active preset.

Both channels of the processing use the same preset.

 Pass User Bits: When triggered, causes the 6300 to pass AES user bits

from its digital input to its digital output. See step 22 on page 2-19.

 Block User Bits: When triggered, prevents the 6300 from

user bits from its digital input to its digital output.

TEST reverts to the

passing AES

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INSTALLATION ORBAN MODEL 6300

 Reset Clock To Hour: resets the internal clock to the nearest hour. For

example, 3:03:10 would be reset to 3:00:00, while 3:53:40 would be reset to 4:00:00. Use this function to periodically re-sync the 6300’s internal clock to your station’s master clock.

 Reset Clock to Midnight: Resets the clock to 0:00:00. You can use this

function to periodically re-sync the 6300’s internal clock to your station’s master clock.

 Mute Analog Output: When voltage is applied, the analog output

mutes. One could use this as an “off-the-air alert” by driving this output with an external loss-of-carrier or loss-of-audio alarm system to mute the talent headphones or monitor speakers.

 Mute Digital Out 1: When voltage is applied, digital output #1 mutes.

 Mute Digital Out 2: When voltage is applied, digital output #2 mutes.

 No Function: remote input is disabled.

3. End remote control interface programming.

When you are finished programming the remote control interface, press the Escape button to return to higher menu levels.

Networking and Remote Control

[Skip this step if you do not wish to connect to your 6300 remotely, either for downloading software upgrades or for PC Remote Control.]

The 6300 has a built-in Ethernet connector that can be used with 10 Mbps or 100 Mbps networks using the TCP/IP protocol. You can also connect a PC to the 6300 through the 6300’s RS-232 serial port, either by modem or directly through a null modem cable.

1. Prepare the 6300 for an Ethernet network connection:

[Skip this step if you will not be using an Ethernet connection.]

 See your network administrator to get the data required in the following pro-

cedure.

 Note that if you wish to do this from the 6300 PC Remote software, then you

must first be able to connect to the 6300. Therefore, you will usually perform this procedure from the 6300’s front panel to prepare it for connection.

A) Navigate to S

B) Press the S

The IP Address Screen appears.

ETUP > NETWORK & REMOTE > NEXT.

ET IP ADDRESS soft button.

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OPTIMOD 6300 DIGITAL INSTALLATION

a) Use the NEXT and PREV keys to move the cursor in turn to each digit in the

IP address. Use the knob to set the digit to the desired value. Repeat until you have selected all the numbers in the IP address assigned by your network administrator

2-37

b) Press the S

AVE soft button to confirm your setting.

C) Set the Subnet Mask assigned by your network administrator if necessary:

a) Press the S

b) Use the

ET SUBNET MASK soft button.

NEXT and PREV keys to move the cursor in turn to each digit in the

subnet mask. Use the knob to set the digit to the desired value. Repeat until you have selected all the numbers in the subnet mask assigned by your network administrator

c) Press the S

AVE soft button to confirm your setting.

D) Set the Gateway assigned by your network administrator if necessary:

a) Press the G

b) Use the

ATEWAY soft button.

NEXT and PREV keys to move the cursor in turn to each digit in the

gateway. Use the knob to set the digit to the desired value. Repeat until you have selected all the numbers in the gateway assigned by your network administrator

c) Press the S

AVE soft button to confirm your setting.

E) Set the IP Port assigned by your network administrator if necessary:

a) Press the IP

b) Use the

PORT soft button.

NEXT and PREV keys to move the cursor in turn to each digit in the IP

port. Use the knob to set the digit to the desired value. Repeat until you have selected all the numbers in the IP port assigned by your network administrator

c) Press the S

AVE soft button to confirm your setting.

F) Connect your Ethernet network to the RJ45 jack on the rear panel of your

6300.

 If you are connecting to a hub or router, use a standard Ethernet cable.

 If you are connecting directly to the Ethernet jack on a computer, use a

“crossover” or “reverse” Ethernet cable.

G) Press the N

EXT button.

2. Prepare the 6300 for modem connection through the serial port:

[Skip this step if you will not be using a modem connection.]

A) Navigate to S

B) Hold down the PC

ODEM on the display.

ETUP > NETWORK & REMOTE.

CONNECT soft button and turn the knob until you see

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INSTALLATION ORBAN MODEL 6300

C) Press the M

ODEM INIT soft button.

D) If the string that appears in the display

SCAPE button and skip steps (E) and (F) below.

S0=4 is the 6300 default setting. This activates auto-answer functionality

in the modem.

is S0=4, this is correct. Press the

E) Set the InIT STRING to S0=4. Use the NEXT and PREV KEYs to move the cursor in

turn to each character in the modem initialization string. Use the knob to set the character to the desired value. Repeat until you have set all the characters in the initialization string.

F) Press the S

AVE soft button to confirm your setting.

3. Modem setup:

You will need two modems and two available phone lines, one of each for your PC and your 6300. Orban Customer Service supports only the 3Com / U.S. Robotics® 56kbps fax modem EXT on the 6300 side of your connection, although other 56kbps modems will often work OK.

You can use either an internal or an external modem with your PC.

A) Connect the telephone line from the wall phone jack to the wall connection

icon on the back of the modem (modem in).

B) Connect the modem to the 6300’s serial port with a standard (not null) mo-

dem cable.

C) Set the modem to A

For 3Com / U.S. Robotics® 56kbps fax modem EXT, set dipswitches 3, 5, and 8 in the down position to activate the A dipswitches should be set to the up position.

UTO ANSWER and turn it on.

UTO ANSWER setting. All other

4. Prepare the 6300 for direct serial connection through the serial port:

[Skip this step if you will not be using a modem connection.]

A) Navigate to S

B) Hold down the PC

IRECT on the display.

ETUP > NETWORK & REMOTE.

CONNECT soft button and turn the knob until you see

You are now ready to connect your computer to your 6300 through a null modem cable connected to your computer’s serial port. Refer to Installing 6300 PC Remote Control Software on page 2-42.

Synchronizing Optimod to a Network Time Server

[Skip this section if you do not wish to automatically synchronize your Optimod’s internal clock to a network timeserver, which may be part of your local network or located on the Internet.]

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OPTIMOD 6300 DIGITAL INSTALLATION

2-39

1. Navigate to SETUP > NEXT > TIME DATE AND ID > NEXT > TIME SYNC.

A) Use the P

 Select

packets. T

ROTOCOL control to choose either TIME PROT or SNTP.

TIME PROT if the Optimod is behind a firewall that does not pass UDP

IME PROT selects the Time Protocol as described in the standard

RFC868. This method uses TCP on port 37.

 Select SNTP if your network timeserver supports the Simple Network Time

Protocol as described in standard RFC1769. This method uses UDP on port

123.

Ask your network administrator which protocols are available. SNTP is slightly more accurate.

B) Using S

YNC PERIOD, choose how often your Optimod will automatically update

its internal clock to the timeserver you selected.

The choices are O

If the connection to the timeserver fails (due to network overload or other problems), your Optimod will try once per hour to synchronize until it is successful.

FF, 8 HOURS, and 24 HOURS.

C) Set the OFFSET to the difference (in hours) between your time zone and Uni-

versal Time (UTC).

UTC is also known as GMT, or Greenwich Mean Time.

 The value can range between –12 and +12 hours. If this value is set to 0,

your Optimod’s time will be the same as UTC.

 You can empirically adjust this value until the correct time for your location

is displayed after you synchronize your Optimod to a timeserver.

Name IP Address Location

time-a.nist.gov 129.6.15.28 NIST, Gaithersburg, Maryland time-b.nist.gov 129.6.15.29 NIST, Gaithersburg, Maryland time-a.timefreq.bldrdoc.gov 132.163.4.101 NIST, Boulder, Colorado time-b.timefreq.bldrdoc.gov 132.163.4.102 NIST, Boulder, Colorado time-c.timefreq.bldrdoc.gov 132.163.4.103 NIST, Boulder, Colorado utcnist.colorado.edu 128.138.140.44 University of Colorado, Boulder time.nist.gov 192.43.244.18 NCAR, Boulder, Colorado time-nw.nist.gov 131.107.1.10 Microsoft, Redmond, Washington nist1.symmetricom.com 69.25.96.13 Symmetricom, San Jose, California nist1-dc.glassey.com 216.200.93.8 Abovenet, Virginia nist1-ny.glassey.com 208.184.49.9 Abovenet, New York City nist1-sj.glassey.com 207.126.98.204 Abovenet, San Jose, California nist1.aol-ca.truetime.com 207.200.81.113 TrueTime, AOL facility, Sunnyvale, Cali-

fornia nist1.aol-va.truetime.com 205.188.185.33 TrueTime, AOL facility, Virginia nist1.columbiacountyga.gov 68.216.79.113 Columbia County, Georgia

Table 2-1: NIST-referenced timeservers

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INSTALLATION ORBAN MODEL 6300

2. Choose a timeserver.

http://www.boulder.nist.gov/timefreq/service/time-servers.html

rent list of timeservers available on the Internet. You network may also have a local timeserver; ask your network administrator.

As of April 2006, NIST’s list was as shown in Table 2-1.

3. Press the NEXT button to set up timeserver parameters.

TIME SERVER button is located on the second page of the TIME SYNC func-

The tions. (You can access this function from anywhere in the Optimod menu tree by navigating to S

You can specify the timeserver either from your Optimod’s front panel or from its PC Remote software. From the front panel, you can only enter the timeserver’s IP address (for example, 192.43.244.18). If you specify the timeserver from PC Remote, you can specify either its named address (for example, time.nist.gov) or its IP address.

4. Specify the time sync parameters from your Optimod’s front panel:

[Skip this step if you wish to specify the timeserver and time sync parameters from your Windows XP computer.]

A) Press the T

The timeserver IP Address Screen appears.

ETUP > NEXT > TIME DATE AND ID > NEXT > TIME SYNC > NEXT.)

IME SERVER button.

provides a cur-

a) Use the N

IP address. Use the knob to set the digit to the desired value. Repeat until you have selected all the numbers in the desired IP address.

b) Press the S

B) Press the S

should indicate that it is connecting to the IP address that you specified. When the connection is successful, the Optimod’s clock will automatically synchronize to the timeserver.

 If the connection is not successful within five seconds, the display will indi-

cate that the connection failed. This means either that the timeserver is too busy or that your setup cannot connect to the timeserver. Double-check the IP address. If you are behind a firewall, make sure that port 123 is open.

 If your connection failed, the gateway might not be set correctly on your

Optimod. The gateway for the timeserver connection is the same gateway that you set in step (1.D) on page 2-37. If you do not know the correct gateway, you can often discover it by connecting a Windows computer the same Ethernet cable that is ordinarily plugged into your Optimod. Ascertain that the computer can connect to the Internet. At the command prompt, type ipconfig. The computer will return the “Default Gateway.”

EXT and PREV keys to move the cursor in turn to each digit in the

AVE soft button to confirm your setting.

YNC NOW soft button to test your settings. Your Optimod’s display

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OPTIMOD 6300 DIGITAL INSTALLATION

5. Specify the time sync from the Optimod PC Remote software:

[Skip this step if you wish to specify the timeserver and time sync parameters from your Optimod’s front panel.]

Optimod PC Remote software can automatically set your Optimod’s local time,

FFSET, and TIME SERVER to reflect the Windows settings in the machine running

PC Remote software.

If you are running Windows 2000, you cannot specify the timeserver from your computer. However, you can still set your Optimod’s clock and offset.

A) In Windows, navigate to the CONTROL PANEL > DATE AND TIME > TIME ZONE tab.

B) Set time zone to correspond to your local time zone.

2-41

C) In Windows, navigate to the C

tab.

D) If you are running Windows XP:

a) Check “Automatically synchronize with an Internet time server” to set your

Optimod’s S

b) Set “Server” to the desired timeserver.

c) Click the “Update Now” button to synchronize your computer’s clock to

the selected timeserver. If this is successful, this means that you can connect to the selected timeserver over your network.

 The I

 If the timeserver you selected in Windows is a

 To use PC Remote to turn off your Optimod’s automatic synchronization,

E) Navigate to Optimod PC Remote’s S

CLOCK button.

NTERNET TIME tab is not available in Windows 2000. If you are running

Optimod PC Remote on Windows 2000, you must enter the timeserver from your Optimod’s front panel as an IP address (step 4 on page 2-40).

IP address, your Optimod will resolve it correctly but the IP address that appears in your Optimod’s display will be 0.0.0.0.

uncheck “Automatically synchronize with an Internet time server” on your PC. Then click the “Update Now” button on PC Remote.

YNC PERIOD to “24.”

ONTROL PANEL > DATE AND TIME > INTERNET TIME

named address instead of an

ETUP/ UTILITY tab and click the SET 6300

 If you are running Windows XP, PC Remote will download your computer’s

currently specified timeserver into your Optimod.

 PC Remote will adjust your Optimod’s O

computer’s time zone setting.

 PC Remote will synchronize your Optimod’s clock with your computer’s

clock.

FFSET setting to correspond to your

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INSTALLATION ORBAN MODEL 6300

F) It is wise to disconnect from PC Remote and then to press the S

ton on your Optimod [step (B) on page 2-40]. This is to test the ability of your Optimod to synchronize to the selected timeserver and to ensure Optimod’s clock is set accurately.

NOTE: Manually setting your Optimod’s clock via Set Time, Set Date, Daylight Time, and the remote contact closure Reset to Hour and Reset to Midnight will not work when the automatic synchronization function is active. To inactivate this function (thereby permitting manual setting to work), set the

FF.

YNC NOW but-

that your

SYNC PERIOD to

Installing 6300 PC Remote Control Software

This section briefly summarizes the procedure for installing 6300 PC Remote software on existing 6300s. If required, you will find more detailed instructions in the .pdf file automatically installed on your computer by Orban’s installer program, Setup6300_x.x.x.x.exe, where “x.x.x.x” represents the software version you are installing. (For example, for version 1.0 software, this would be 1.0.0.0.)

The PC Remote software is supplied on a CD shipped with your 6300. You can also download it from ftp.orban.com/6300

Instructions for using the PC Remote software are found starting on page 3-57.

Installing the Necessary Windows Services

The 6300 PC Remote application uses Windows’ built-in communications and networking services to deal with the low-level details necessary to communicate with the 6300’s serial port. (These services are also used to upgrade your 6300’s firmware when updates are available from Orban.) The exact process will vary, depending on how you wish to set up the communications. That is:

 If you want to communicate through a local PC, you have two choices:

 Establish a connection between a serial (COM) port of the PC and the COM

port of your 9300 through a null modem cable and use Windows Direct Serial Connect to make the basic connection.

 Use a crossover Ethernet cable to communicate to your PC through its

Ethernet port.

 If you want to communicate through a pair of modems, you will use the Win-

dows Dial-Up networking service to make the connection.

You must install the appropriate communications services in Windows (if they are not already installed) before you can run 6300 Remote software. You may

therefore need to have access to the Windows install disk(s)—or have their image copied onto your computer’s hard drive—before you attempt to use the 6300 PC Remote application.

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OPTIMOD 6300 DIGITAL INSTALLATION

In all cases, regardless of whether your PC communicates to the 6300 through its serial port or Ethernet connector, it uses the ppp and the TCP/IP protocols to communicate with the 6300.

Check Hardware Requirements

To connect your PC to your 6300, regardless of the method you choose, you will need the following:

 Orban 6300 OPTIMOD 6300.

 If connecting by serial cable: a null modem cable (also called a “reverse” cable).

This cable has DB9 female connectors at both ends for connecting the 6300 to the serial port on your computer. If your computer has a DB25 connector, you must obtain an adapter.

 If connecting by modem: a 3Com / U.S. Robotics® 56kbps fax modem EXT and

normal (not null) modem cable for the 6300 side of the connection. Note that Orban Customer Service does not support any other type of modem for connecting to the 6300.

2-43

 If connecting by network: a standard Ethernet cable (with RJ45 connectors) to

connect to a network hub or router, or a crossover Ethernet cable to connect directly to your PC’s Ethernet jack.

 PC running Windows 2000 (SP3 or higher) or XP.

6300 PC Remote will not run on older Windows versions.

Recommended Components

Computer.................................................................... Pentium II or higher

Available Disk Space .......................................................................... 25MB

RAM .................................................................................................. 256MB

Display................................................................................. SVGA or higher

Microsoft Windows................. 2000 SP3 (or higher) or XP (Home or Pro)

COM Port ...................................................... 16550 (or compatible) UART

WARNING

When connecting your 6300, use shielded cable to protect the pins in the RS-232 connector from electrostatic discharge.

The following subsections provide steps for connecting to your Optimod 6300 software using the Windows 2000 / XP Direct Cable Connect or via modem connection.

Running the Orban Installer Program

Insert the installer CD into your computer’s CD drive.

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INSTALLATION ORBAN MODEL 6300

The installer should start up and ask you if you wish to install the PC Remote application on your computer. If it fails to do so, navigate to Start \ Run on your computer, and type X:setup (where “X” is the drive letter of your CD drive).

Follow the prompts on your screen to install the PC Remote software automatically on your computer.

 You might have obtained the automatic installer application from some other

source than Orban’s CD, like Orban’s ftp site or another computer on your network. If so, just run the application and follow the on-screen instructions.

 This program installs the necessary files and adds an Orban / Optimod 6300

folder to your computer’s Start Menu. This folder contains shortcuts to the PC Remote application and to the documentation. If you accepted the option during installation, there is also a shortcut to the PC Remote application on your desktop.

You have now installed all files necessary to use the PC Remote software. If you are using a direct serial or a modem connection, the next step is to install and configure the Windows communications services that allow your computer to communicate with your 6300. Setting Up Serial Communications on page 2-47 provides details.

Setting Up Ethernet, LAN, and VPN Connections

If you are using an Ethernet connection and your computer can successfully connect to the Internet through its Ethernet port, it already has the correct (TCP/IP) networking set up to communicate with the 6300. In most cases, all you need is your 6300’s IP address, Port, and Gateway number, as set in step 1 on page 2-36. You will enter

when you create a “connection” to your 6300 from the 6300 PC Remote appli-

these cation—see step (E) on page 3-58. If your computer does not have a working Ethernet Microsoft to set it up to enable TCP/IP networking.

If you are using a crossover Ethernet cable to connect your Optimod directly to your computer, you must set your Windows networking to provide a static IP address for your computer because your Optimod does not contain a DHCP server.

If you wish to connect to your 6300 through your LAN or VPN (through a WAN or the Internet), consult your network administrator. Note that to cross subnets, you must specify a gateway. If the PC and 6300 are on the same subnet, then it is unnecessary to specify a gateway (although you will still need to specify one if you want your Optimod to synchronize to an Internet timeserver — see Synchronizing Opti-

mod to a Network T

you are behind a firewall, you must open the port you specified in step (1.E) on

If page 2-37. If the gateway and firewall (if used) are configured correctly, it is possible to connect 6300 PC Remote to a 6300 via a VPN.

port, you must add one and then following the instructions provided by

ime Server on page 2-38).

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OPTIMOD 6300 DIGITAL INSTALLATION

Conclusion

By carefully following the instructions in the Appendix, you should have successfully installed the necessary Windows services and connected to your 6300. However, if you experience any problems with this process, or have any other 6300 questions, please contact Orban Customer Service:

phone: +1 510 351-3500

2-45

email: custserv@orban.com

For details on your new 6300 software, from new features to operational suggestions, refer to our FTP site (ftp.orban.com/6300

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INSTALLATION ORBAN MODEL 6300

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OPTIMOD 6300 DIGITAL INSTALLATION

2-47

Appendix: Setting Up Serial Communications

This appendix provides instructions for setting up both direct serial and modem connections from your 6300 to your PC. You must do this when you define a new connection from the 6300 PC Remote application. The appendix provides procedures for both the Windows 2000 and Windows XP operating systems. (Note that the screen shots were prepared for Orban’s Optimod-FM 8300 and refer to that product. They are directly applicable to the 6300 as well.)

Preparing for Communication through Null Modem Cable

1. Configure your 6300.

A) On your 6300’s front panel, navigate to S

B) Hold down the PC

IRECT on the display.

2. Connect the cable.

A) Connect one end of a null modem cable to the DB9 serial connector on the

6300’s rear panel.

CONNECT soft button and turn the knob until you see

ETUP > NETWORK & REMOTE.

Be sure to use a null modem cable. A normal serial cable will not work.

B) Connect the other end of the cable to your computer’s COM port.

Connecting Using Windows 2000 Direct Serial Connection:

Ordinarily, a direct serial connection through a null modem cable is used only when you are controlling one 6300 per available COM port on your computer. If you wish to control multiple local 6300s, it is better to use an Ethernet network connection. However, in principle you could control multiple 6300s serially from one COM port, using a hardware serial switch to select the 6300 you wish to control. In this case, you should set up a separate 6300 “connection” for each 6300 to be controlled, following the instructions below. All connections should reference the same COM port.

This connection is used both for upgrading your 6300 and for connecting the 6300 PC Remote application to your 6300.

Important: The Direct Serial Connection must have exclusive access to the PC COM port that connects to your 6300. Make sure than any software that monitors this COM port (such as HotSync manager, etc) is disabled before running Direct Serial Connection.

If you have already configured your direct serial cable connection, skip to step 2 on page 2-52.

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INSTALLATION ORBAN MODEL 6300

If you cannot access the Internet after making a Direct or Modem connection, you will have to reconfigure certain networking parameters in Windows. Please see You Cannot Access the Internet After Making a Direct or Modem Connection of the 6300 on page 5-6.

1. Add and configure a Direct Connection for Windows 2000:

A) Create

2000 Direct Connection:

a) Launch 6300 PC

b) Choose “Connect / New

c) Give your 6300 a name

d) If you wish to have

e) Select “Serial Connec-

f) Click “Add.”

g) Select “Connect Directly

a New Windows

Remote.

6300”

(e.g., “KABC”) by entering this name in the “6300 Alias” field.

6300 PC Remote remember the password for this Optimod, enter the pass-word in the “Password“ field.

tion.”

to another computer.”

h) Click “Next.”

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OPTIMOD 6300 DIGITAL INSTALLATION

i) In the drop-down box, select the serial

port you will be using to make the connection.

j) Click “Next.”

k) Select either “For all users” or “Only

for myself.”

The correct setting depends on how your network and security are configured.

Your wizard may not display this field if your computer is set up for a single user only.

2-49

l) Click “Next.”

m)Enter a name for your Connection such

as: “Connection to 6300.”

n) Click “Finish.”

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INSTALLATION ORBAN MODEL 6300

o) Click “Yes.”

B) Edit your new Direct

Connection properties:

a) Click “Settings.”

b) Click the “General”

tab.

c) Select the device you

set up in step (i) on page 2-49.

will usually be

This “Communications cable between two computers (COM1).”

d) Click “Configure.”

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OPTIMOD 6300 DIGITAL INSTALLATION

e) Set “Maximum speed (bps)” to

“115200.”

f) Check “Enable hardware flow con-

trol.”

g) Make sure that all other boxes are

not checked.

h) Click “OK.”

2-51

i) Select the Networking tab.

j) Make sure that “PPP: Windows 95 /

98 / NT 4 / 2000, Internet” appears in the “Type of dial-up server I am calling” field.

k) Make sure that “Internet Protocol

(TCP/IP) is checked.

You may leave “File and Printer Sharing for Microsoft Networks” and “Client for Microsoft Networks” checked if you like.

l) Click “OK.”

When the “Connection properties” window appears, click “OK.”

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INSTALLATION ORBAN MODEL 6300

2. Launch an existing Windows 2000 Direct connection.

Once you have set up a “connection” specifying Direct Connect in the 6300 PC Remote application (see To set up a new connection on page 3-58), choosing this connection tion to your 6300.

You can connect by selecting the desired connection from the drop-down list in the

ONNECT menu.

You can also connect by double-clicking the connection in the “Connection List” window.

A dialog bubble will appear on the bottom right hand corner of the screen verifying your connection if the connection is successful.

from 6300 PC Remote automatically opens a Windows Direct Connec-

If you have trouble making a connection, refer to OS Specific Troubleshooting Advice: Troubleshooting Windows 2000 Direct Connect on page 5-7. If you have trouble the first time after creating a connection according to the instructions above, try restarting your computer to clear its serial port.

3. To change the properties of an

Right-click the connection in the “connection List” window and choose “Properties.” The “Connection properties” window opens (see page 2-48).

existing connection:

Connecting Using Windows XP Direct Serial Connection

If you have already configured your direct serial cable connection, skip to step 2 on page 2-

1. Add and configure a Direct Connection for Windows XP:

56.

A) Create a New Windows XP Direct Connection:

a) Launch 6300 PC Remote.

b) Choose “Connect / New 6300”

Orban OPTIMOD 6300 Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual