Orban Optimod-FM 8300, 8300J Operating Manual
Operating Manual
OPTIMOD-FM
8300
Digital Audio Processor
Version 2.1 Software
IMPORTANT NOTE: Refer to the unit’s rear panel for your Model Number.
Model Number: Description:
8300 OPTIMOD 8300, Stereo Encoder, Digital I/O, Protec-
tion Structure, Two-Band Structure, Multi-Band
Structure, 115V (for 90-130V operation) or 230V (for
200-250V operation), switchable to 50µs or 75µs.
8300J As above, but for 90-117V operation.
MANUAL:
Part Number: Description:
96116.210.03 8300 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
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
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.
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-FM and OPTIMOD-TV 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.
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-FM. 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 of damaging static.
WARNING
WARNING
IMPORTANT
U.S. patents 208,548, 4,460,871, 5,737,434, 6,337,999, 6,434,241, 6,618,486, and 6,937,912
protect OPTIMOD 8300. Other patents pending.
Orban and Optimod are registered trademarks.
All trademarks are property of their respective companies.
This manual is part number 96116.210.03. Published April 2009.
© Copyright Orban
8350 East Evans Suite C4, Scottsdale, AZ 85260 USA
Phone: (1) (480) 403-8300; Fax: (1) (480) 403-8301; E-Mail: custserv@orban.com; Site: www.orban.com
Operating Manual
OPTIMOD-FM
8300
Digital Audio Processor
Version 2.1 Software
Table of Contents
Index.........................................................................................................................0-9
Section 1 Introduction
.........................................................................................................................................1-1
ABOUT THIS MANUAL.......................................................................................................1-1
THE OPTIMOD-FM 8300 DIGITAL AUDIO PROCESSOR .......................................................1-1
User-Friendly Interface............................................................................................1-2
Absolute Control of Peak Modulation...................................................................1-2
Flexible Configuration ............................................................................................1-3
Adaptability through Multiple Audio Processing Structures ...............................1-4
Controllable .............................................................................................................1-5
PRESETS IN OPTIMOD-FM ..............................................................................................1-5
Factory Presets .........................................................................................................1-5
User Presets..............................................................................................................1-6
INPUT/OUTPUT CONFIGURATION ........................................................................................1-6
Digital AES3 Left/Right Input/Output ....................................................................1-7
Analog Left/Right Input/Output.............................................................................1-7
Stereo Analog Baseband Composite Output ........................................................1-7
Subcarriers................................................................................................................1-8
Remote Control Interface .......................................................................................1-8
Computer Interface .................................................................................................1-9
RS-232 Serial Port ............................................................................................................. 1-9
RJ45 Ethernet Connector ................................................................................................. 1-9
LOCATION OF OPTIMOD-FM.........................................................................................1-10
Optimal Control of Peak Modulation Levels.......................................................1-10
Best Location for OPTIMOD-FM ...........................................................................1-11
If the transmitter is not accessible:................................................................................ 1-11
If the transmitter is accessible: ...................................................................................... 1-11
STUDIO-TRANSMITTER LINK.............................................................................................1-13
Transmission from Studio to Transmitter.............................................................1-13
Digital Links .................................................................................................................... 1-13
Composite Baseband Microwave STLs........................................................................... 1-14
Dual Microwave STLs...................................................................................................... 1-14
Analog Landline (PTT / Post Office Line)....................................................................... 1-16
Using the Orban 8100AST (or 8100A/ST) External AGC with the 8300 .............1-16
STL and Exciter Overshoot ....................................................................................1-16
USING LOSSY DATA REDUCTION IN THE STUDIO..................................................................1-17
ABOUT TRANSMISSION LEVELS AND METERING ..................................................................1-17
Meters ....................................................................................................................1-17
Studio Line-up Levels and Headroom ..................................................................1-18
Fig. 1-1: Absolute Peak Level, VU and PPM Reading.................................................... 1-18
Transmission Levels................................................................................................1-19
LINE-UP FACILITIES .........................................................................................................1-19
Metering of Levels.................................................................................................1-19
Composite Output Level ................................................................................................ 1-19
Built-in Calibrated Line-up Tones.................................................................................. 1-20
Built-in Calibrated Bypass Test Mode............................................................................ 1-20
MONITORING ON LOUDSPEAKERS AND HEADPHONES..........................................................1-20
EAS TEST......................................................................................................................1-21
PC CONTROL AND SECURITY PASSCODE.............................................................................1-22
WARRANTY, USER FEEDBACK...........................................................................................1-23
User Feedback........................................................................................................1-23
LIMITED WARRANTY .............................................................................................1-23
INTERNATIONAL WARRANTY...............................................................................1-23
EXTENDED WARRANTY ........................................................................................1-24
Section 2 Installation
.........................................................................................................................................2-1
INSTALLING THE 8300.......................................................................................................2-1
Figure 2-1: AC Line Cord Wire Standard.......................................................................... 2-2
Figure 2-2: Wiring the 25-pin Remote Interface Connector........................................... 2-4
8300 REAR PANEL ...........................................................................................................2-5
INPUT AND OUTPUT CONNECTIONS.....................................................................................2-6
Cable.........................................................................................................................2-6
Connectors ...............................................................................................................2-6
Analog Audio Input.................................................................................................2-6
Analog Audio Output .............................................................................................2-7
AES3 Digital Input and Output...............................................................................2-7
Composite Output and Subcarrier Input ...............................................................2-8
Figure 2-3: Separation vs. load capacitance ....................................................................2-9
Grounding..............................................................................................................2-10
Power Ground........................................................................................................2-11
Circuit Ground .......................................................................................................2-11
8300 FRONT PANEL .......................................................................................................2-11
STUDIO LEVEL CONTROLLER INSTALLATION (OPTIONAL) .......................................................2-13
If you are using Orban 8200ST external AGC......................................................2-13
Figure 2-4: 8200ST Jumper Settings (*Factory Configuration) .....................................2-14
QUICK SETUP.................................................................................................................2-16
ANALOG AND DIGITAL I/O SETUP.....................................................................................2-24
AUTOMATION USING THE 8300’S INTERNAL CLOCK............................................................2-30
SECURITY AND PASSCODE PROGRAMMING.........................................................................2-32
To Create a Passcode: ............................................................................................2-33
To Edit a Passcode:.................................................................................................2-33
To Delete a Passcode: ............................................................................................2-34
To Lock the Front Panel Immediately:..................................................................2-34
To Program local lockout: .....................................................................................2-34
To Unlock the Front Panel: ...................................................................................2-35
Dial-up Networking and the Passcode.................................................................2-35
If You Have Forgotten Your Passcode..................................................................2-35
REMOTE CONTROL INTERFACE PROGRAMMING ..................................................................2-36
NETWORKING AND REMOTE CONTROL..............................................................................2-37
SYNCHRONIZING OPTIMOD TO A NETWORK TIME SERVER....................................................2-39
Table 2-1: NIST-referenced timeservers .........................................................................2-40
INSTALLING 8300 PC REMOTE CONTROL SOFTWARE ..........................................................2-43
Installing the Necessary Windows Services..........................................................2-43
Check Hardware Requirements ............................................................................2-43
Running the Orban Installer Program..................................................................2-44
Setting Up Ethernet, LAN, and VPN Connections ...............................................2-45
Conclusion..............................................................................................................2-45
APPENDIX: SETTING UP SERIAL COMMUNICATIONS .............................................................2-47
Preparing for Communication through Null Modem Cable ..............................2-47
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 8300’S SOFTWARE.................................................................................2-69
Section 3 Operation
.........................................................................................................................................3-1
8300 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
OPTIMOD-FM — from Bach to Rock ......................................................................3-4
Fundamental Requirements: High-Quality Source Material and Accurate
Monitoring...............................................................................................................3-4
ABOUT THE 8300’S SIGNAL PROCESSING FEATURES ..............................................................3-5
Signal Flow...............................................................................................................3-5
ITU-R 412 Compliance .............................................................................................3-9
Two-Band Purist Processing ....................................................................................3-9
Input/Output Delay ...............................................................................................3-10
CUSTOMIZING THE 8300’S SOUND ...................................................................................3-10
Basic Modify...........................................................................................................3-11
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
Table 3-1: Factory Programming Presets....................................................................... 3-17
EQUALIZER CONTROLS ....................................................................................................3-21
Table 3-2: Five-Band Equalization Controls .................................................................. 3-22
STEREO ENHANCER CONTROLS .........................................................................................3-26
Table 3-3: Stereo Enhancer Controls ............................................................................. 3-26
AGC CONTROLS ............................................................................................................3-27
Table 3-4: AGC Controls................................................................................................. 3-27
Advanced AGC Controls........................................................................................3-30
CLIPPER CONTROLS.........................................................................................................3-33
Table 3-5: Clipper Controls ............................................................................................ 3-34
Advanced Clipper Controls ...................................................................................3-37
THE TWO-BAND STRUCTURE ...........................................................................................3-37
The Protection Presets...........................................................................................3-38
Setting Up the Two-Band Structure for Classical Music......................................3-38
Customizing the Settings ......................................................................................3-39
The Two-Band Structure’s Full and Advanced Setup Controls ...........................3-39
Table 3-6: Two-Band Controls ....................................................................................... 3-40
Advanced Two-Band Controls ..............................................................................3-44
THE FIVE-BAND STRUCTURE ............................................................................................3-45
Putting the Five-Band Structure on the Air.........................................................3-45
Customizing the Settings ......................................................................................3-45
Table 3-7: Multiband Controls....................................................................................... 3-46
The Five-Band Structure’s Full and Advanced Setup Controls ...........................3-46
Table 3-8: MB Attack / Release Controls........................................................................ 3-47
Table 3-9: MB Band Mix Controls...................................................................................3-48
Advanced Multiband Controls..............................................................................3-53
ABOUT THE 8300’S HD / DIGITAL RADIO PROCESSING........................................................3-55
Delay Difference between Digital-Channel and FM Outputs ............................3-56
Table 3-10: HD Audio Controls....................................................................................... 3-56
HD I/O Setup Controls ...........................................................................................3-56
HD Audio Controls.................................................................................................3-56
ITU-R MULTIPLEX POWER CONTROLLER............................................................................3-57
Multiplex Power Threshold ............................................................................................3-57
Figure 3-1: Multiplex Power over 15 Minute Observation Interval with MPX Power
Controller Active, measured at Optimod’s Composite Output ....................................3-58
Audio Processing and the Multiplex Power Threshold Control ...................................3-59
Table 3-11: Test Modes................................................................................................... 3-59
TEST MODES .................................................................................................................3-59
GETTING THE BASS SOUND YOU WANT ............................................................................3-60
USING THE 8300 PC REMOTE CONTROL SOFTWARE ...........................................................3-62
To set up a new connection: .................................................................................3-63
To initiate communication: ...................................................................................3-63
To modify a control setting:..................................................................................3-64
To recall a preset:...................................................................................................3-64
To save a user preset you have created: ..............................................................3-65
To back up User Presets, system files, and automation files onto your computer’s
hard drive:..............................................................................................................3-65
To restore archived presets, system files, and automation files:........................3-66
To share an archived User Preset between 8300s: ........................................................3-67
To modify INPUT/OUTPUT and SYSTEM SETUP: ...........................................................3-67
To modify AUTOMATION: .........................................................................................3-67
To group multiple 8300s: ......................................................................................3-68
Operation Using the Keyboard ............................................................................3-68
To Quit the Program..............................................................................................3-68
About Aliases created by Optimod 8300 PC Remote Software .........................3-68
Multiple Installations of Optimod 8300 PC Remote ...........................................3-69
To Import Archived 8400 and 8500 Presets into Your 8300................................3-70
Section 4 Maintenance
.........................................................................................................................................4-1
ROUTINE MAINTENANCE ...................................................................................................4-1
SUBASSEMBLY REMOVAL AND REPLACEMENT.......................................................................4-2
FIELD AUDIT OF PERFORMANCE..........................................................................................4-6
Table 4-1: Decoder Chart for Power Supervisor .............................................................. 4-8
Table 4-2: Layout Diagram of J7, with expected voltages on each pin .........................4-9
Table 4-3: Typical Power Supply Voltages and AC Ripple ..............................................4-9
Section 5 Troubleshooting
.........................................................................................................................................5-1
PROBLEMS AND POTENTIAL SOLUTIONS...............................................................................5-1
RFI, Hum, Clicks, or Buzzes ...............................................................................................5-1
Unexpectedly Quiet On-Air Levels ................................................................................... 5-1
Poor Peak Modulation Control ........................................................................................5-1
Audible Distortion On-Air ................................................................................................5-2
Audible Noise on Air........................................................................................................ 5-2
Whistle on Air, Perhaps Only in Stereo Reception ......................................................... 5-3
Interference from stereo into SCA .................................................................................. 5-4
Fig. 5-1: Typical 8300 baseband spectrum with heavy processing, 0-100 kHz. ............. 5-4
Shrill, Harsh Sound ........................................................................................................... 5-4
Dull Sound ........................................................................................................................ 5-5
System Will Not Pass Line-Up Tones at 100% Modulation ............................................ 5-5
System Will Not Pass Emergency Alert System (“EAS” USA Standard) Tones at the
Legally Required Modulation Level ................................................................................ 5-5
System Receiving 8300’s Digital Output Will Not Lock .................................................. 5-5
19 kHz Frequency Out-of-Tolerance................................................................................ 5-5
L–R (Stereo Difference Channel) Will Not Null With Monophonic Input...................... 5-6
General Dissatisfaction with Subjective Sound Quality.................................................. 5-6
Security Passcode Lost (When Unit is Locked Out) ......................................................... 5-6
Connection Issues between the 8300 and a PC, Modem, or Network ................5-6
Troubleshooting Connections.................................................................................5-7
You Cannot Access the Internet After Making a Direct or Modem Connection to
the 8300: ..................................................................................................................5-7
OS-SPECIFIC TROUBLESHOOTING ADVICE ............................................................................5-8
Troubleshooting Windows 2000 Direct Connect:..................................................5-8
Troubleshooting Windows 2000 Modem Connect:.............................................5-10
Troubleshooting Windows XP Direct Connect: ...................................................5-11
Troubleshooting Windows XP Modem Connect: ................................................5-11
TROUBLESHOOTING IC OPAMPS .......................................................................................5-12
TECHNICAL SUPPORT.......................................................................................................5-13
FACTORY SERVICE...........................................................................................................5-13
SHIPPING INSTRUCTIONS ..................................................................................................5-14
Section 6 Technical Data
.........................................................................................................................................6-1
SPECIFICATIONS................................................................................................................6-1
Performance.............................................................................................................6-1
Installation ...............................................................................................................6-2
CIRCUIT DESCRIPTION .......................................................................................................6-5
Overview ..................................................................................................................6-5
Control Circuits ........................................................................................................6-6
User Control Interface and LCD Display Circuits ...................................................6-7
Input Circuits............................................................................................................6-8
Output Circuits.........................................................................................................6-9
DSP Circuit..............................................................................................................6-12
Power Supply .........................................................................................................6-12
ABBREVIATIONS .............................................................................................................6-13
PARTS LIST ....................................................................................................................6-14
Obtaining Spare Parts ...........................................................................................6-15
Base Board .............................................................................................................6-15
CPU Module ...........................................................................................................6-17
RS-232 Board..........................................................................................................6-18
Power Supply .........................................................................................................6-19
Input/Output (I/O) Board ......................................................................................6-20
DSP Board...............................................................................................................6-23
Display Board.........................................................................................................6-25
SCHEMATICS AND PARTS LOCATOR DRAWINGS...................................................................6-25
Function Description Drawing Page
Chassis
Base Board
CPU Module
RS-232 Board
Power Supply
I/O Board
DSP Board
Circuit Board Locator and Basic Interconnections
Glue logic; supports CPU module
and RS-232 daughterboard.
Top view
(not to scale)
Parts Locator
Drawing
6-29
6-30
Contains:
System Connections Schematic 1 of 4
CPU module interface Schematic 2 of 4
CPU module interface (ver. .06) Schematic 2 of 4
Power Supply Monitor Schematic 3 of 4
CPLD, General Purpose Interface,
Schematic 4 of 4
6-31
6-32
6-33
6-34
6-35
and Remotes
Control microprocessor. Services
front panel, serial port, Ethernet,
Parts Locator
Drawing
6-36
DSP board, and control board. Resides on base board.
Contains:
Ethernet Schematic 1 of 5
General Purpose Bus Schematic 2 of 5
Memory Schematic 3 of 5
Miscellaneous Functions Schematic 4 of 5
Power and Ground Distribution Schematic 5 of 5
Supports Serial Port Parts Locator
6-37
6-38
6-39
6-40
6-41
6-42
Drawing
Schematic 1 of 1
±15V analog supply; ±5V analog
supply; +5V digital supply
Parts Locator
Drawing
Schematic 1 of 1
Analog Input/Output
AES3 Input/Output
Parts Locator
Drawing
6-43
6-44
6-45
6-46
Composite Output
SCA Input.
Contains:
L and R Analog Inputs Schematic 1 of 5 6-47
L and R Analog Outputs Schematic 2 of 5 6-48
Composite / SCA Schematic 3 of 5 6-49
Control and Digital I/O Schematic 4 of 5 6-50
Interface and Power Distribution Schematic 5 of 5 6-51
DSP Chips; Local +3.3V regulator.
Contains:
DSP Extended Serial Audio Inter-
Parts Locator
6-52
Drawing
Schematic 1 of 7 6-53
face (ESAI)
DSP Host Interface Schematic 2 of 7 6-54
DSP Serial Peripheral Interface,
Schematic 3 of 7 6-55
Power, and Ground
ISA Bus 8-bit I/O Schematic 4 of 7 6-56
Serial Audio Interface and Clock
Schematic 5 of 7 6-57
Generation
Display Board
DSP Block
Diagram
Power Distribution Schematic 6 of 7 6-58
No-Connects Schematic 7 of 7 6-59
Front-Panel LCD, LEDs, Buttons,
and Rotary Encoder
Parts Locator
Drawing
6-60
Schematic 1 of 1 6-61
Shows signal processing 6-62
Index
1
19 K Ref control 2- · 10
8
8100A/ST 1- · 16
8100A1 1- · 16
8100AST 1- · 16
8100AXT2 1- · 16
8200ST 2- · 13
8300 HD 3- · 55
8300 OPTIMOD-FM 1- · 1
8400
comparison with 8300 3- · 70
importing 8400 presets 3- · 4, 70
A
A/D converter
circuit description 5- · 9
specification 6- · 2
Abbreviations 6- · 13
AC Line Cord Standard 2- · 2
Advanced Modify 3- · 12
AES/EBU I/O 2- · 7
AGC
bass attack control 3- · 31
bass coupling control 3- · 29
bass delta threshold control 3- · 32
bass release control 3- · 31
bass threshold control 3- · 31
control list 3- · 27
crossover control 3- · 32
defeating 3- · 18, 27
drive control 3- · 28
external AGC setup 2- · 13
gate threshold control 3- · 28
idle gain control 3- · 31
master attack control 3- · 31
master delta threshold control 3- · 31
master release control 3- · 28
matrix 3- · 30
Maximum Delta Gain Reduction control 3- ·
30
meter 2- · 12, 2
ratio control 3- · 30
window release control 3- · 30
window size control 3- · 30
AGC 3- · 6
allpass crossover 3- · 32
analog baseband outputs 1- · 7
analog I/O 1- · 7
analog input
circuit description 6- · 8
ref level, I/O setup 2- · 24
analog input 2- · 6
analog landline 1- · 16
analog output
circuit description 6- · 10
analog output 2- · 7
anti-aliased 3- · 37, 53
archiving presets 3- · 65
attack 3- · 31
attack time controls 3- · 53
audio
connections 2- · 6
input, connecting 2- · 6
output 2- · 7
output, connecting 2- · 7
Audio Precision 4- · 6
auditing performance 4- · 6
automation
add event 2- · 31
delete event 2- · 32
edit event 2- · 32
automation 2- · 30
automation 3- · 67
B
B4>B5 coupling 3- · 7
B5 down expand 3- · 51
backing up presets 3- · 65
balance adjust 2- · 26
balanced
inputs 2- · 6
output, simulates transformer 2- · 7
band coupling 3- · 51
base board
removing 4- · 3
replacing 4- · 5
baseband spectrum
control 3- · 6
baseband spectrum 5- · 4
Basic Modify 3- · 11
Bass
equalizer 3- · 61
Getting sound you want 3- · 60
bass clip threshold 3- · 33
bass punch
and the bass clipper 3- · 33
bass threshold 3- · 31
battery
replacing 6- · 6
Beatles 3- · 31
bit depth of internal processing 6- · 1
block diagram 6- · 62
bone-conduction comb filtering 3- · 10
Brilliance control 3- · 24
buttons
escape 2- · 12
escape 3- · 2
modify 2- · 12
modify 3- · 1
next 2- · 11
NEXT 3- · 1
previous 2- · 11
PREVIOUS 3- · 1
RECALL 2- · 12
RECALL 3- · 1
setup 2- · 12
setup 3- · 1
soft buttons 2- · 11
buzz 5- · 1
bypass
local 1- · 21
PC remote 1- · 22
remote interface 1- · 22
test mode 1- · 20
C
cable
shielding 2- · 10
type recommended for analog I/O 2- · 6
CD mastering, overprocessing in 3- · 5
chassis
getting inside 4 · 2
ground 2- · 11
circuit board locator drawing 6- · 29
circuit description
control 6- · 6
LCD display 6- · 7
user control interface 6- · 7
circuit description 6- · 5
CIT25 2- · 8
classical 3- · 18, 38
cleaning front panel 4- · 1
clipper
bass clip threshold control 3- · 33
clipper shape control 3- · 33
control list 3- · 33
final clip drive control 3- · 33
clipper, bass 3- · 7
clock
battery 6- · 6
reset to hour 2- · 37
reset to midnight 2- · 37
resetting via remote control 2- · 37
setting 2- · 30
common-mode rejection 2- · 10
components
obtaining 6- · 15
composite
circuit description 6- · 11
isolation transformer 2- · 8
limiter 3- · 8
peak level control 1- · 19
composite baseband microwave STL 1- ·
14
composite limiter
drive 3- · 34
pilot tone protection 2- · 9
composite output
cable specification 2- · 8
I/O setup 2- · 20, 26
impedance 2- · 8
level adjustment range 2- · 8
level control 2- · 8
setting output impedance 2- · 8
specifications 6- · 3
termination 2- · 8
composite output 2- · 8
composite outputs 1- · 7
compression
defined 3- · 3
compressor gate 3- · 29
Compressor look-ahead
and bass clipper mode 3- · 36
computer
connecting to 2- · 4
troubleshooting connections 5- · 7
Windows 2000 5- · 8
Windows XP 5- · 11
computer interface
RS-232 2- · 5
serial 2- · 5
computer interface 1- · 9
connecting
through Win XP direct serial 2- · 52
connection to PC
troubleshooting 5- · 6
connectors
audio 2- · 6
input and output 2- · 6
contrast 2- · 11
contrast control 3- · 1
control knob 2- · 12
control knob 3- · 1
controls
contrast 2- · 11
contrast 3- · 1
description 3- · 1
soft buttons 3- · 1
corrosion 4- · 1
CPU board
replacing 4- · 5
CPU module
removing 4- · 3
crossover
allpass 3- · 32
linear phase 3- · 32
modes 3- · 32
D
D/A converter
circuit description 6- · 10
specification 6- · 2
Delay
Analog vs. HD 3- · 56
delay 3- · 10
delta release control 3- · 54
digital I/O 1- · 7
digital input
circuit description 6- · 9
digital links 1- · 13
digital output
circuit description 6- · 11
digital radio
setup controls 3- · 56
display assembly
removing 4 · 2
display board
parts list 6- · 25
replacing 4 · 5
distortion
aliasing 3- · 8
caused by poor source material 3- · 4
excessive 5- · 6
on material with strong HF content 3- · 37
specification 6- · 1
testing 4- · 10
troubleshooting 5- · 2
dither 2- · 29
DJ Bass control 3- · 25
downward expander 3- · 50
DSP
block diagram 6- · 62
circuit description 6- · 12
DSP board
removing 3- · 4
replacing 4- · 5
dual microwave STLs 1- · 14
dull sound
troubleshooting 5- · 5
E
EAS
modulation low 5- · 5
test tones 1- · 21
easy setup 2- · 16
echo fusion threshold 3- · 10
EQ Frequency control
HD 3- · 57
equalizer
bass shelf 3- · 21
control list 3- · 21
parametric 3- · 23
equalizer 3- · 7
escape button 2- · 12
escape button 3- · 2
Ethernet 2- · 37, 45, 63
exciter overshoot 1- · 16
Exit Test 2- · 36
F
factory presets
selecting 2- · 21
factory presets 1- · 5
factory service 5- · 13
final clip drive 3- · 33
Firewall 2- · 45, 63
Firmware
updating 8500 2- · 69
five-band
attack time controls 3- · 53
band coupling controls 3- · 51
band on/off switch 3- · 53
band threshold control 3- · 49
delta release control 3- · 54
downward expander thresold control 3- · 50
full modify control list 3- · 46
HF clipper threshold 3- · 52
high frequency limiter control 3- · 43, 54
limiter attack control 3- · 54
maximum distortion control 3- · 44, 54
multiband drive control 3- · 46
multiband gate threshold control 3- · 49
multiband limit threshold control 3- · 50
multiband limiter drive control 3- · 50
mutiband release control 3- · 47
output mix controls 3- · 52
five-band 3- · 45
frequency response
specification 6- · 1
testing 4- · 9
front panel 3- · 1
Full Modify 3- · 11
fuse 2- · 5
G
gain reduction
meters 2- · 12
meters 3- · 2
gate
threshold control 3- · 49
gate 3- · 29
gate LED 2- · 12, 2
Gateway 2- · 45, 63
gateway address 2- · 38
getting inside the unit 4 · 2
gold (format) 3- · 19
GPI
specifications 6- · 4
GPI interface
testing 4- · 13
ground
chassis 2- · 11
ground lift switch 2- · 3, 5
grounding
circuit 2- · 11
loss of 4- · 1
power 2- · 11
grounding 2- · 10
grouping 8300s 3- · 68
H
Haas threshold 3- · 10
half-cosine interpolation limiter 3- · 8
HD
EQ frequency control 3- · 57
EQ Gain control 3- · 57
Limiter Drive control 3- · 57
HD Radio
GR meter 2- · 13
setup controls 3- · 56
HD Radio 1- · 3
headphones
low delay monitoring 1- · 21
low-delay monitoring 2- · 18, 27
headphones 1- · 20
HF enhancer 3- · 7
high frequency
excessive energy in source material 3- · 5
High Frequency Enhancer 3- · 25
high frequency limiter
threshold 3- · 52
high frequency limiter 3- · 7, 43, 52, 54
high-pass filter
30 Hz 3- · 6, 25
hum 5- · 1
I
I/O
AES/EBU 2- · 7
connections 2- · 3
I/O board
replacing 4- · 5
IC opamps
troubleshooting 5- · 12
idle gain 3- · 31
import
8400 presets 3- · 4, 70
input
analog, connecting 2- · 6
analog, specifications 6- · 2
digital, specifications 6- · 2
meters 2- · 12
SCA, specifications 6- · 4
subcarrier 2- · 8
input level
line-up 1- · 18
input meters 1- · 19
input meters 3- · 2
input selector
I/O setup 2- · 24
input/output board
removing 4- · 3
inspection of package contents 2- · 1
installation procedure 2- · 1
Internet
cannot access 5- · 7
IP address 2- · 37
IP port 2- · 38
ITU412
setting up controller 2- · 22
ITU412 3- · 9, 57
J
J.17
and 8300 digital I/O 1- · 7
and NICAM 1- · 14
deemphasis applied to digital audio input 6-
· 3
defined 1- · 7
preemphasis applied to digital audio output
6- · 3
line-up tones
system will not pass at 100% modulation 5- ·
5
line-up tones 1- · 20
LLHard mode 3- · 36
location 1- · 10
lock
driven equipment cannot lock to 8300 output
5- · 5
lockout
immediate 2- · 34
programming local 2- · 34
unlocking front panel 2- · 35
look-ahead
limiting 3- · 3
Lookahead
Multiband Control 3- · 53
Lookahead 3- · 44
lossy data reduction
in studio 1- · 17
NICAM 1- · 14
used in STLs · 13
loudness
and distortion 3- · 3
insufficient 5- · 6
insufficient due to poor peak control 5- · 1
loudness/distortion tradeoff 3- · 33
L–R will not null 5- · 6
L
latency
low delay presets 2- · 18
low delay presets 3- · 10, 15, 18, 71
latency 3- · 10
LEDs
gate 2- · 12, 2
Less-More
index 3- · 43
Less-More 3- · 27
level
metering 1- · 19
setup 2- · 18
transmission 1- · 19
limiter
attack 3- · 54
limiting
defined 3- · 3
line voltage 2- · 2
linear-phase crossover 3- · 32
M
MAC address 5- · 7
main board
reattaching 4 · 5
master delta threshold 3- · 31
matrix, AGC 3- · 30
maximum distortion control 3- · 44, 54
measuring performance 4- · 6
meter
circuit description 6- · 7
composite 1- · 19
gain reduction 3- · 12
meters
AGC 2- · 12, 2
circuit description 6- · 7
composite 3- · 2
gain reduction 2- · 12
gain reduction 3- · 2
input 2- · 12
input 3- · 2
studio 1- · 17
Mod Reduction control 2- · 36
modem
preparing for connection 2- · 57
recommended baud rate 2- · 58
setting up 2- · 38
specification for 2- · 44
Windows 2000 configuration 2- · 57
Windows XP configuration 2- · 63
modify button 2- · 12
modify button 3- · 1
modulation control
troubleshooting poor 5- · 1
monitoring 1- · 20
Mono mode 2- · 36
MPX Power Offset 3- · 35
multiband drive 3- · 46
multiband limit threshold 3- · 50
multiband llimiter drive 3- · 50
multipath distortion 3- · 26
multiplex power
meter 2- · 13
multiplex power 3- · 57
N
NAB Broadcast and Audio System Test CD
4- · 6
network
timeserver 2- · 39
networking 2- · 37
NEWS preset 3- · 19
NEXT button 2- · 11
NEXT button 3- · 1
NICAM 1- · 14
noise
troubleshooting 5- · 2
null modem cable
communicating through 2- · 47
null modem cable 2- · 43
O
oldies 3- · 19
Orban 222 stereo enhancer 3- · 26
output
analog output level trim adjustment 4- · 9
analog, connecting 2- · 7
analog, specifications 6- · 2
composite 2- · 8
composite, specifications 6- · 3
digital, setting dither 2- · 29
digital, setting sample rate 2- · 28
digital, setting sync 2- · 28
digital, setting word length · 28
digital, specifications 6- · 3
headphone monitoring, setup 2- · 18, 27
output level
I/O setup 2- · 27, 28
quick setup 2- · 20
output mix controls 3- · 52
overshoot
in exciter 1- · 16
overshoot
reduction 1- · 17
overshoot
excessive 5- · 1
overshoot 3- · 58
overshoot compensator drive 3- · 37
P
parametric equalizer 3- · 7
parent preset 3- · 43
parts
obtaining 6- · 15
parts list
base board 6- · 15
CPU module 6- · 17
display board 6- · 25
DSP board 6- · 23
I/O board 6- · 20
power supply 6- · 19
RS-232 board 6- · 18
parts list 6- · 14
passcode
and dial-up networking 2- · 35
creating 2- · 33
deleting 2- · 34
editing 2- · 33
programming 2- · 32
recovering from lost 2- · 35
PC
Orban installer program 2- · 44
PC board locator diagram 6- · 29
PC control
security 1- · 22
PC hardware requirements 2- · 43
PC Remote
aliases 3- · 68
moving alias folders 3- · 70
multiple coexisting versions 3- · 69
upgrading versions 3- · 69
PC Remote Software 3- · 62
peak control criteria 1- · 10
peak-to-average ratio 3- · 3
performance
measuring 4- · 6
phase rotator 3- · 6, 25
phase-linear
system group delay spec · 10
two-band purist processing 3- · 9
phase-linear 1- · 4
phase-linear 3- · 39
pilot tone
frequency out of tolerance 5- · 5
reference output 1- · 8
reference output 2- · 9
port, IP 2- · 38
Ports 2- · 45, 63
power
cord 2- · 2, 5
power 2- · 2
power supply
circuit description 6- · 12
parts list 6- · 19
testing 4- · 8
power supply board
reattaching 4 · 5
removing 4 · 4
prcocessing
styles 3- · 4
pre-emphasis
defeating 2- · 19
quick setup 2- · 17
preset
restoring archived 3- · 66
presets
backup 3- · 65
classical 3- · 18
customizing 3- · 10
factory 1- · 5
factory programming 3- · 16
five-band 3- · 14, 19
protection 3- · 38
saving user 3- · 6, 13
sharing between 8300s 3- · 67
two-band 3- · 14
UL (ultra-low latency) 3- · 10, 15
user presets 1- · 6
PREVIOUS button 2- · 11
PREVIOUS button 3- · 1
processing
AGC 3- · 6
block diagram 6- · 62
distortion in 3- · 3
equalization 3- · 7
input conditioning 3- · 6
intelligent clipping 3- · 8
introduction to 3- · 3
multiband compression 3- · 7
signal flow 3- · 5
stereo enhancement 3- · 6
structures 1- · 4
structures 3- · 14
two-band purist 30 · 9
Proof of Performance 1- · 5
Proof of Performance 3- · 59
protect preset 3- · 18
punch
increasing 3- · 54
Q
quick setup 2- · 16
R
rack-mounting unit 2- · 3
ratio
AGC 3- · 30
control 3- · 7
limit 3- · 26
rear panel 2- · 5
RECALL button 2- · 12
RECALL button 3- · 1
registration card 2- · 1
release
fast 3- · 48
medium-fast 3- · 48
medium-slow 3- · 48
slow 3- · 47
remote
PC Remote software 3- · 62
remote control
bypass 1- · 22
connecting 2- · 3
GPI, specifications 6- · 4
wiring 2- · 4
remote control 2- · 5
remote interface
functions controllable by 2- · 36
GPI 1- · 8
programming GPI 2- · 36
testing 4- · 13
wiring 2- · 4
remote interface connector 2- · 5
Remote Software 2- · 39, 43, 69
resolution
specification 6- · 1
RFI 5- · 1
right channel balance
I/O setup 2- · 26
RJ45 jack 2- · 38
routine maintenance 4- · 1
RS232
testing 4- · 13
RS232 board
replacing 4- · 5
RS-232 connector 2- · 5
RS-232 interface
circuit description 6- · 7
removing board 4- · 2
S
sample rate
at digital output 6- · 3
internal, specification 6- · 1
setting output 2- · 20
sample rate converter
testing 4- · 11
saving user presets 3- · 6, 13
SCA
composite meter does not indicate 1- · 19
input, specifications 6- · 4
inputs 1- · 8
interference from stereo 5- · 4
modulation reduction 2- · 23
screen display 2- · 11
screen display 3- · 1
screens
System Setup 2- · 16
Security
lock immediately 2- · 34
security 1- · 22
security 2- · 32
Serial Communications
setting up 2- · 47
serial connection
setting up direct 2- · 39
serial connector 2- · 5
service 5- · 13
setup
I/O 2- · 24
quick 2- · 16
setup button 2- · 12
setup button 3- · 1
shelving equalizer
bass, slope of 3- · 7
shipping instructions 5- · 14
shrill sound
troubleshooting 5- · 4
signal flow diagram 6- · 62
soft buttons 2- · 11
soft buttons 3- · 1
Software
updating 8500 2- · 69
software updates 1- · 5
Sound Technology 4- · 6
source material
poor-quality, adjusting processing for 3- · 5
requirements for 3- · 4
spare parts
obtaining 6- · 15
specifications 6- · 1
spectrum analyzer 4- · 6
Speech/music detector 3- · 36, 53
sports 3- · 48
sports preset 3- · 20
Stanford Research Systems 4- · 6
station ID
setting 2- · 22
stereo encoder
testing 4- · 11
stereo encoder 3- · 8
stereo enhancer 3- · 26
Stereo mode 2- · 36
STL
compatibility with 32 kHz sample rate 2- · 8
overshoot in uncomressed digital 2- · 8
systems 1- · 13, 14
studio chassis mode 2- · 17
studio-transmitter link 1- · 13
subassembly removal and replacement 4- ·
2
subcarrier
input, specifications 6- · 4
inputs 2- · 9
modulation reduction 2- · 23
subcarrier input 2- · 8
subcarrier inputs 1- · 8
subnet mask 2- · 37
switches
ground lift 2- · 3, 5
voltage select 2- · 2, 5
system setup
quick setup 2- · 16
System Setup screen 2- · 16
T
talk 3- · 48
TALK preset 3- · 19
TCP/IP
setting parameters 2- · 37
technical support 5- · 23, 13
telephone support 5- · 23, 13
test modes 3- · 59
Threshold
Multiband Speech 3- · 44
threshold control 3- · 49
time
daylight saving 2- · 17
summer 2- · 17
time & date 2- · 16
timeserver 2- · 39
top cover
reattaching 4 · 6
removing 4 · 2
transformer
composite isolation 2- · 8
troubleshooting
installation 5- · 1
two-band
bass attack control 3- · 44
bass coupling control 3- · 42
bass threshold control 3- · 44
clipping control 3- · 43
crossover control 3- · 44
drive control 3- · 40
full modify controls 3- · 39
gate control 3- · 42
high frequency clip threshold control 3- · 44
high frequency limiting control 3- · 43
master attack control 3- · 44
master compression threshold 3- · 44
release control 3- · 41
two-band structure 3- · 37
unpacking 2- · 1
Updating software 2- · 69
upgrading software 1- · 5
user presets
archiving 3- · 14
creating 3- · 6, 11, 13
user presets 1- · 6
V
voltage select switch 2- · 2, 5
VPN, setting up 2- · 45, 63
W
warranty 1- · 23
Warranty 1- · 23
warranty 6- · 5
whistle on-air
troubleshooting 5- · 3
window
release control 3- · 30
window size control 3- · 30
Windows
installing services 2- · 43
Windows 2000
adding direct serial connection 2- · 48, 52,
58, 65
Direct Connect 5- · 8
direct serial connection 2- · 47
modem connect 5- · 10
modem connection 2- · 57
Windows XP
direct connect 5- · 11
modem configuration 2- · 63
modem connect 5- · 11
word length
at output, specification 6- · 3
setting output 2- · 28
X
U
unlock front panel 2- · 35
XLR connector
wiring standard 2- · 7
OPTIMOD-FM DIGITAL INTRODUCTION
Section 1
Introduction
About this Manual
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1-1
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The OPTIMOD-FM 8300 Digital Audio Processor
Orban’s all-digital OPTIMOD-FM 8300 Audio Processor can help you achieve excellent audio quality in FM stereo broadcasting. Because all processing is performed by
high-speed mathematical calculations within Motorola DSP56362 Digital Signal
Processing chips, the processing has cleanliness, quality, and stability over time and
temperature that is unmatched by analog processors.
OPTIMOD-FM 8300 is descended from the industry-standard OPTIMOD-FM audio
processors. Thousands of these processors are on the air all over the world. They
have proven that the “OPTIMOD sound” attracts and keeps an audience even in the
most competitive commercial environment.
Because OPTIMOD-FM 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-FM. A small investment
of your time now will yield large dividends in audio quality.
The rest of Section 1 explains how OPTIMOD-FM fits into the FM broadcast facility.
Section 2 explains how to install it and set it up. Section 3 tells how to operate
OPTIMOD-FM. Sections 4 through 6 provide reference information.
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INTRODUCTION ORBAN MODEL 8300
OPTIMOD-FM 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-FM 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
an Orban studio level control system expressly designed for this purpose. (At the
time of this writing, this is the Orban 8200ST OPTIMOD-Studio Compressor / Limiter /
HF Limiter / Clipper.) The 8200ST can be adjusted so that it substitutes for the broadband AGC circuitry in OPTIMOD-FM, which is then defeated.
User-Friendly Interface
An LCD and full-time LED meters make setup, adjustment and programming
of OPTIMOD-FM easy — you can always see the metering while you’re adjusting
the processor. Navigation is by dedicated buttons, soft buttons (whose functions
are context-sensitive), and a large rotary knob. The LEDs show all metering functions of the processing structure (Two-Band or Five-Band) in use.
Absolute Control of Peak Modulation
The 8300 provides universal transmitter protection and audio processing
for FM broadcast. It can be configured to interface ideally with any commonly
found transmission system in the world.
The 8300 provides pre-emphasis limiting for the two standard pre-emphasis
curves of 50s and 75s. Its pre-emphasis control is seldom audibly apparent,
producing a clean, open sound with subjective brightness matching the original
program.
By integrating the stereo encoder with the audio processing, the 8300 elimi-
nates the overshoot problems that waste valuable modulation in traditional external encoders. The stereo encoder has two outputs with independent level
controls, each capable of driving 7in parallel with 47,000pF, (100ft / 30m of
coaxial cable).
The 8300 prevents aliasing distortion in subsequent stereo encoders or transmis-
sion links by providing bandwidth-limiting and overshoot-compensated 15
kHz low-pass filters ahead of the 8300’s audio outputs and stereo encoder.
Anti-aliased clippers running at 256 kHz sample rate prevent any trace of
“digital clipper” sound.
OPTIMOD-FM DIGITAL INTRODUCTION
Flexible Configuration
The 8300 includes analog and AES3 digital inputs and outputs. Both digital in-
put and digital output are equipped with sample-rate converters and can operate at 32 kHz, 44.1 kHz, 48, 88.2, and 96 kHz sample rates. The pre-emphasis
status and output levels are separately adjustable for the analog and digital outputs.
The 8300 has an internal, DSP-based stereo encoder (with a patented “half-
cosine interpolation” composite limiter operating at 512 kHz sample rate)
to generate the pilot tone stereo baseband signal and control its peak level. The
composite limiter is a unique, “you can only do this in DSP” process that beats
composite clippers by preserving stereo imaging while fully protecting the
stereo pilot tone, RDS / RBDS, and subcarriers.
The 8300’s digital output can be switched to emit processed audio suitable for
HD Radio, digital radio, and netcasts. Meanwhile, the analog output and
composite output continue to emit audio processed for the analog FM channel.
To do this, the output of the multiband compressor (5-band or 2-band) splits into
two paths. The FM path feeds an advanced, distortion-canceling clipper and
overshoot compensator, while the HD path is de-emphasized and then feeds a
look-ahead limiter.
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Note that the “UL” [ultra-low-latency] presets do not offer HD processing. If a UL preset is put on-air, the HD output will emit a de-emphasized,
FM-processed signal.
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.
The 8300 has two independent composite baseband outputs with digitally
programmable output levels. Robust line drivers enable them to drive 100 feet
of RG-59 coaxial cable without audible performance degradation.
The 8300 has two subcarrier inputs that are mixed with the output of
OPTIMOD-FM’s stereo encoder before application to the composite output connectors. One input can be re-jumpered to provide a 19 kHz pilot reference output. The other input has an internal level trim to accommodate subcarrier generators with output levels as low as 220 mV.
The 8300 precisely controls the audio bandwidth to 15 kHz. This prevents
overshoots in uncompressed digital links operating at a 32 kHz-sample rate and
prevents interference to the pilot tone and RDS (or RBDS) subcarrier.
The 8300 has a defeatable multiplex power limiter that controls the multiplex
power to ITU-R BS412 standards. An adjustable threshold allows a station to
achieve maximum legal multiplex power even if the downstream transmission
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INTRODUCTION ORBAN MODEL 8300
system introduces peak overshoots into the 8300-processed signal. Because this
limiter closes a feedback loop around the audio processing, it allows the user to
adjust the processor’s subjective setup controls freely without violating
BS412 limits, regardless of program material. The multiplex power limiter acts on
all outputs (not just the composite output). It reduces clipper drive when it reduces power, simultaneously reducing clipping distortion.
All input, output, and power connections are rigorously RFI-suppressed to
Orban’s traditional exacting standards, ensuring trouble-free installation.
The 8300 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 on-air at a time. OPTIMODFM realizes its processing structures as a series of high-speed mathematical computations made by Digital Signal Processing (DSP) chips.
The 8300 features three processing structures: Optimum Five-Band (or “Multi-
band”; 15 or 20 ms delay) for a consistent, “processed” sound, free from undesirable side effects, Ultra-Low-Latency Five-Band (5 ms delay) for environ-
ments where talent monitors live off-air and they object to the delay of Optimum Five-Band, and Two-Band for a transparent sound that preserves the fre-
quency balance of the original program material. A special Two-Band preset creates a no-compromise “Protect” function that is functionally similar to the “Pro-
tect” structures in earlier Orban digital processors. The Optimum Five-Band and
the Two-Band structures can be switched via a mute-free crossfade; the Low Latency Five-Band structure causes a very brief audio mute when activated.
The 8300 can increase the density and loudness of the program material by
multiband compression, limiting, and clipping. This improves the consistency of
the station’s sound and increasing loudness and definition remarkably, without
producing unpleasant side effects.
The 8300 rides gain over an adjustable range of up to 25 dB, compressing dy-
namic range and compensating for both operator gain-riding errors and gain inconsistencies in automated systems.
The 8300’s Two-Band processing structure is phase-linear to maximize audible
transparency.
The 8300 can import and run any 8400 or 8500 user preset via the 8300 PC
Remote application. (Certain 8400 and 8500 features are not available and will
be reinterpreted.) See To Import Archived 8400 and 8500 Presets into Your 8300
on page 3-70 for details.)
OPTIMOD-FM DIGITAL INTRODUCTION
Controllable
The 8300 can be remote-controlled by 5-12V pulses applied to eight pro-
grammable, optically isolated “general-purpose interface” (GPI) ports.
8300 PC Remote software is a highly graphical application that runs under
Windows 2000 and XP. It communicates with a given 8300 via TCP/IP over mo-
dem, direct serial, and Ethernet connections. You can configure PC Remote to
switch between many 8300s via a convenient organizer that supports giving any
8300 an alias and grouping multiple 8300s into folders. Clicking an 8300’s icon
causes PC Remote to connect to that 8300 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 8300 features (including advanced
controls not available from the 8300’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.).
OPTIMOD-FM contains a versatile real-time clock, which allows automation of
various events (including recalling presets) at pre-programmed times. The clock
can be set automatically from an Internet timeserver.
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A Bypass Test Mode can be invoked locally, by remote control (from either the
8300’s GPI port or the 8300 PC Remote application), or by automation to permit
broadcast system test and alignment or “proof of performance” tests.
OPTIMOD-FM contains a built-in line-up tone generator, facilitating quick and
accurate level setting in any system.
OPTIMOD-FM's software can be upgraded by running Orban-supplied
downloadable upgrade software on a PC. The upgrade can occur remotely
through the 8300’s Ethernet port or serial port (connected to an external modem), or locally (by connecting a Windows® computer to the 8300’s serial port
through the supplied null modem cable).
Presets in OPTIMOD-FM
There are two distinct kinds of presets in OPTIMOD-FM: factory presets and user
presets.
Factory Presets
The Factory Presets are our “factory recommended settings” for various program
formats or types. The description indicates the processing structure and the type of
processing. Each Factory Preset on the Preset list is really a library of more than 20
separate presets, selected by navigating to M
ODIFY PROCESSING / LESS-MORE and us-
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INTRODUCTION ORBAN MODEL 8300
ing the
factory presets are listed and described starting on page 3-16.
LESS-MORE control to adjust OPTIMOD-FM for less or more processing. The
Factory Presets are stored in OPTIMOD-FM’
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.
s non-volatile memory and cannot be
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
8300 (which will vary depending on the version of your 8300’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 (Five-Band, TwoBand, or Ultra-Low-Latency Five-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-FM simultaneously accommodates:
Digital AES3 left/right inputs and outputs.
Analog left/right inputs and outputs.
Composite stereo outputs.
Subcarrier (SCA and RDS / RBDS) inputs.
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