Orban 2200 User Manual

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Page 1

OPTIMOD-FM 2200 INSTALLATION

Section 2

Installation

page contents

2-2 Installation of 2200

2-7 Figure 2-1: AC Line Cord Wire Standard 2-9 Figure 2-2: Wiring the 25-pin Remote Control Connector

2-1

2-17

2-27 System Setup Controls

2-27 I/O CALIB (I/O Calibrat ion ) 2-32 Stereo Encoder (and processing Pre-Emphasis) 2-34 Remote Interface 2-35 TEST Mode

Basic System Setup

CAUTION

The installation and servicing instructions in this manual are for use by qualified personnel only. To avoid electric shock, do not perform any servicing other than that contained in the Operating Instructions unless you are qualified to do so. Refer all servicing to qualified service personnel.

pagecontents

Page 2

2-2

INSTALLATION OPTIMOD-FM 2200

Installation of 2200

Allow about 2 hours for installation. Installation co nsists of: (1) unpacking and insp ecting the 2200, (2) optional rese tting of

jumpers for 2200 op tions (compos ite output impedance , input termination, inp ut sensitivity), (3) checking the line voltage setting, fuses and power cord, (4) mounting the 2200 in a rack, (5) connecting inputs, outputs and power, (6) setting the optional connecting of remote control leads.

When you have finished installing the 2200, proceed to “System Setup,” on page 2-16.

1. Unpack and inspect.

A If you note obvious phys ical damage, contact the carrier immediate ly to make a

damage claim. Packed with the 2200 are:

1 Operating Manual 1 Quick Setup Guide 1Line Cord 2

⁄2A Replacement Fuses for “U” and “J” V ersions

2 250mA Replacement Fuses for “E” Version 1 Orban green screwdriver (Xcelite R3323) 1 Booklet: Audio Quality in the FM Plant

GROUND LIFT switch, (7 ) and

B Save all packing materials! If you should ever have to ship the 2200 (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.

C Complete the Regi str ati on Car d and return it to Or ban. (please)

The Registration Card enables us to inform you of new applications, performance improve ments, and service aids tha t may be develo ped, and it helps us respond promptly to cla ims unde r warr anty with out our hav ing to request a copy of your bill of sale or other proof of purchase . Please f ill in the Registration Card and send it to us today. (The Registration Card is located aft er the cover page).

We do not sell or give away our customer’s names to anyone.

Page 3

OPTIMOD-FM 2200 INSTALLATION

2. Change standard factor y configuration, if required.

[Skip this step if your installation does not have any special requirements.]

The 2200 is s upplied from the f ac tory with its jumpe rs set to th e con figur ation c orre ct for most installations.

Stereo Encoder Composite Output Impedance 0Ω Input Impedance 10kΩ Input Sensitivity −10dBu or greater (+5dBu to +27dBu peak)

A To change any jumpers you must remove the top cover of the 2200 to access the main

circuit board. (Make sure p ower is not con nected. ) Remove all scr ews ho lding the cover in place, then lift it off. (B e careful not to strip thre ads when opening the cover.)

B Refer to Figure 2-1 to find the jumpers on the main circuit board and to position them

according to your application.

The following inf ormation is provided to explain each jumper and its settings in detail.

2-3

Stereo encoder composite output impedance.

•

[Do not change the default 0Ω jumper setting unless your installation needs 75Ω source impedance.]

The stereo encoder is shipp ed from the facto ry with 0Ω source imp edan ce. This is correct for virtually all installations. However, the 2200 stereo encoder can be changed to 75Ω source impedance if desired.

The frequencies in the stereo baseband are low by comparison to RF or video, and the ch aracteristic imped ance of coaxial cab le is not 75Ω at lower frequencies, so the transmission system will ha ve more accu rate amplitud e and phase response (and thus, better stereo separ ation) if the cab le is driven by a very low source impedance (0Ω) and is terminated with greater than 1kΩ at the exciter.

However, a few broadcast organizations require that FM composite be transmitted in impedan ce-matche d coaxial ca ble with 75Ω sourc e and load impedances.

To change the source impedance of one or both of the composite outputs:

To change the sou rc e imp ed ance of comp osite ou tpu t #1, move jum per JA to the “75Ω” position (Fig 2-1). To change the source impedance of composite output #2, move jumpe r JB to the “7 5Ω” po sition (Fig 2-1).

Analog left/right input termination.

•

[Do not change the default setting unless your installation requires 600Ω termination on the analog left/right inputs.]

The analog left/right inputs are shipped from the factory with balanced bridging (1 0kΩ) input impe dance. Howev er, the 2200 a nalog inputs ca n be changed to 600Ω input impedance.

Page 4

2-4

INSTALLATION OPTIMOD-FM 2200

To change the input impedance of the analog left /rig ht inputs:

Move jumpers J301 and J305 according to Figure 2-1. Jumper J301 sets the left channel and jumper J305 sets the right channel .

Set analog left/right input sensitivity.

•

[Skip this step if your installation will supply the 22 00 with nominal input level of −10dBu or greater (+5dBu to +27 dBu peak).]

The analog left/right inputs are shipped from the factory with input sensitivity to accommodate inputs whose absolute maximum peak level is between +5dBu and +27dBu.

If VU meters are used, +5dBu to +27dBu absolute peak corresponds to a 0VU level of approximate ly −9dBu to +13dBu.

If PPMs are used, +5dBu to +27dBu absolute peak corresponds to a PPM level of approximate ly −2dBu to +20dBu.

However, in unusual circumstances where the input level is very low, the 2200 analog inputs can be changed for greater sensitivity. This usually occurs only when the stu dio-to-transmitter link i s a long telephone or po st line with a passive equalize r at the re ceive end a nd no amplifier to make u p the loss of the line and the equalizer .

To increase the input sensitivity of the analog input to accommodate absolute peak levels of −17dBu to +5dBu (nominal levels down to

−30dBu):

Move jumpers J302, J303, J306, J307 and J308 according to Figure 2-1. Jumpers J30 2 and J303 set the lef t channel and jumpers J306 and J307 set the right channel. Jumper J308 sets the co ntrol cir cuit to r ecogniz e the n ew input sensitivity.

C Replace the 2200 top cover.

Replace all screws snugly. (Be ca re ful not to strip thr ea ds by fa stenin g the screws too tightly.)

Page 5

OPTIMOD-FM 2200 INSTALLATION

2-5

Page 6

2-6

INSTALLATION OPTIMOD-FM 2200

2200 Rear Panel

Voltage Selector (for Model Numbers 2200/U, 2200-D/U, 2200/E and 2200-D/E) can be set to 115V (for 100-132V operation) or 230V (for 200-264V operation); (for Model 2200/J and 2200-D/J) set to 115V (for 89-120V operation).

Fuse values can be changed to support 115V or 230V operation. Fuse must be 3AG Slow-Blow,

Power Cord is detachabl e and is termina ted in a “U- ground ” plug (USA st andard), or CEE7/7 plug (Continental Europe), as appropriate to your 2200’s Model Number.

GND LIFT (Ground Lift) Switch can be set to ground to its chassis) , or to driving its composite output into an unbalanced exciter input).

Remote Cont rol In terf ace is pr ov ided to conn ect the 2200 to a re mote contr ol. Th e 2200 remote control accepts a DB-25 connector and supports user-programmable selection of up to eight inputs fo r any one of the fo llowing para meters: u ser presets , factory presets, bypass, tone, exit test, stereo, mono left, mono right, mono sum, analog input, digital inp ut (Model 2200-D only), digital input + J.17 pre-emphas is (Model 2200-D only).

COMPOSITE 1 OUTPUT and COMPO SITE 2 OUTPUT are provided, each with independent output level control (via front panel Comp 1 and Comp 2 controls). Each output uses a BNC connector.

⁄2-amp for 115V, or 1⁄4-amp (250mA) “T ” type for 230V.

GND ( to connect the 2 200’s circuit

LIFT (if you a re using the 2200 ’s ster eo enc oder, an d are

A valid signal is a momentary tr ansition from no-c urrent to cu rrent flowing through the particular remote signal pins. Current must flow for at least 50ms for the signal to be interpreted as valid. It is acceptable to apply current continuously to an input, DC or AC. Do not exceed 9 volts unless you use an external current-limiting resistor that limits curr ent to 10mA.

ANALOG INPUT and ANALOG OUTPUT provided to support left and right audio signals through XLR-type connectors.

Digital AES/EBU INPUT and AES/EBU OUTPUT (Model 2200-D only) are provided to support two-channel AES/EBU-standard digital audio signals through XLR-type connectors.

Page 7

OPTIMOD-FM 2200 INSTALLATION

3. Check the line voltage, fuse and power cord.

A DO NOT connect power to the unit yet! B Check the voltage selector. This is on the rear panel.

Refer to the unit’s re ar panel fo r your Model Numb er and the in side o f th e front cover of this manual for your Model Number’s line volta ge settin g.

Model Numbers 2200/U, 2200-D/U, 2200/E and 2200-D/E are shipped configured for either 100-132V or 200-264V, 50Hz or 60Hz operation, as indicated on the rear pane l. To change the opera ting voltage, set the voltag e selector to 115V (for 100-132V) or 230V (f or 200 -264 V) as appro pr iate .

Model Number 2200/J and 2200-D/J are shipped for 89-120V, 50/60Hz operation. The voltage selecto r shou ld be set to 115V (f or 89-12 0V) .

C Check the value of the fuse and change the fuse if the value is incorrect.

For safety, the fuse must be Slow-Blow 1⁄2-amp for 115V, or 250mA

(

⁄4-amp) “T” type fo r 23 0V.

TYPE 18/3 SVT COR, TYP

(3 x .82 mm2)

WIRE COLOR

NORMAL ALT

BROWN

BLUE

GREEN-YELLOW

BLACK WHITE GREEN

PLUG FOR

115 VAC

(USA)

CONDUCTOR

LINE

NEUTRAL

N E

EARTH GND

2-7

TYPE H05VV - F - 0.75

PLUG FOR

(EUROPEAN)

Figure 2-1: AC Line Cord Wire Standar d

D Check po wer cor d.

AC power passes through an IEC-standard mains connector and an RF filter designed to meet the standa rd s of all inter na tion al sa fe ty au tho ritie s.

The power cord is terminated in a “U-ground” plug (USA standard), or CEE7/7 plug (Continental Europe), as appropriate to your 2200’s Model Number. The green/yellow wire is connected directly to the 2200 chassis.

If you need to change the plug to meet your country’s standard and you are qualified to do so, see Figure 2-2. Otherwise, purchase a new mains cord with the correct line plug attache d.

230 VAC

CONDUCTOR WIRE COLOR

NEUTRAL

N E

EARTH GND

LINE

BROWN

BLUE

GREEN-YELLOW

Page 8

2-8

INSTALLATION OPTIMOD-FM 2200

4. Set Ground Lift switch.

GND LIFT switch is located on the rear panel.

The

GND LIFT switch is shipped fr om the fac tory set to ground (to co nnect the 2200’s

The circuit ground to its chassis ground). If you are using the 2200’s stereo encoder, and are driving its composite outp ut into an unbalanced exciter input, set the to

LIFT.

GND LIFT switch

This will break a ground loop that could otherwise occur. Unbalanced exciter inputs can cause hum and noise because it is difficult to control the

system ground ing. If hum or n oise appears that cannot be c ured by rese tting the

LIFT

switch, we suggest that y ou ins tall the optional Orban CIT25 Composite Iso lation

Transformer at the exciter’s input to balance it. If you use the CIT25, set the 2200’s

LIFT

switch to GND.

GND

If you are not using the 2200’s stereo encoder, set the GND LIFT switch to ground.

5. Mount the 2200 in a r ack.

The 2200 requires one standard rack unit (1

⁄4 inches/4.4 cm).

There shou ld be a good gr ound connec tion betwee n the rack a nd the 2200 ch assis — check this with an ohmmeter to verify that the resistance is less than 0.5Ω.

Mounting the unit o ver large heat-producing devic es (such as a vacuum- tube power amplifier) may sh or ten c omp on en t lif e an d is no t recommended. Ambie nt temperature should not exceed 113°F/45°C when equipment is powered.

Equipment life will be exten de d if the unit is mou nte d away from sou rc es of vibration, such as large blowers.

The shorter the baseband cable run from the 2200 to exciter, the less like ly that ground loops or other nois e problems will occur in the insta llation. If you require a lo ng c ab le run, it is usually best to mount the RF exciter close to the 2200 , and to make the long cable carry the RF output from the exciter to the transmitter’s RF power amplifiers.

Page 9

OPTIMOD-FM 2200 INSTALLATION

6. Connect remote control. (optional)

The 2200 has extensive remote control provisions, which are described on page 2-34. Optically-isolated remote control connections are terminated in a type DB-25 male

connector located on the rear panel. It is wired according to Fig. 2-2. T o select the desired function, apply a 5-12V A C or DC pulse be tween the a ppropriate The (−) terminals can be conne cted togethe r and then c onnected to gr ound at pin 1 to create a composition resistor in series with the current limiting. A current-limited +9VDC source is available on pin 25.

REMOTE COMMON. If you use 48V, connect a 3.6K 10%, 1-watt carbon

REMOTE COMMON or the (+) terminal to provide

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

PIN ASSIGNMENT

REMOTE terminals.

2-9

REMOTE INTERFACE

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

7. Connect inputs and outputs.

See the hook-up and grounding information on the following pages. Audio Input and Audio Output Connections Page 2-10

Composite Output Page 2-12 AES/EBU Digital Input and Output (2200-D only) Page 2-11 Grounding Page 2-12

Page 10

2-10

INSTALLATION OPTIMOD-FM 2200

Audio Input and Output Connections

Cable

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

Connectors

Input and output connectors are XLR-type connectors.

•

In the XLR-type c onne ctors, 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 one pin is considered automatically

HIGH.

Analog Audio Input

LOW, the other pin is

Nominal input level between −30dBu and +8dBu will result in normal oper ation

•

of the 2200. (See step 2 on page 2-3 for a full discussion).

(0dBu = 0.775Vrms. For this application, the dBm @600Ω scale on voltmeters can be read as if it were ca libr ate d in dBu. )

The peak input level that causes overload is dependent on the setting of the AI

•

CLIP control. It is adjustable from −17dBu to +27dBu in two ranges.

The electronically -bal anced i nput uses an ultra low noise and distortion differ-

•

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

Input connec tion s a re th e sa me w he the r the d riv ing sou rc e is balanced or unbal-

•

anced.

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

•

that is considered wire to the pin on the XLR - typ e c on ne cto r (# 3 or #2) th at is considered the standards of your organization. (Note: International Standard is pin 2

*In low RF fields (like a studio site), do not connect the cable shield at the 2200

•

input — it should be con ne cte d at the sou rc e en d on ly. In h igh RF fields (like a transmitter site), also connect the shield to pin 1 of the male XLR-type connector at the 2200 input.

HIGH by the standards of your organization. Connect the black

LOW by

HIGH .)

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

•

GROUND and (−) (or LO) output terminals, con nect both the shield an d the black

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

Page 11

OPTIMOD-FM 2200 INSTALLATION

Analog Audio Output

Electronically-balanced and floating outputs simulate a true transfo rme r out-

•

put. The source impedance is 30Ω. The output is capable of driving loads of 600Ω or higher; maximum output level is +20dBu. The outpu t s ar e EM I su pp re ss ed .

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 organization ’s standards) to circu it ground, and take the remaining pin. No special pr ecaution s are re quired eve n though one side of the output is grounded.

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

•

At the 2200’s output (and at the output of other equipment in the system), connect

•

the cable’s shie ld to the connector. Connect the red (or white) wire to the pin on the XLR-type connector (#2 or #3) th at is co nside red the black wire to the p in on the XLR-type conn ector (#3 o r #2) tha t is c onsidered

LOW by the standards of your organization.

LOW pin of the XLR-type c onnector ( #3 or #2 , depending o n your

HIGH output from th e

CHASSIS GROUND terminal (pin 1) on the XLR- type

HIGH by the standards of your organization. Connect

2-11

AES/EBU Digital Input and Output (2200-D Only)

Model 2200-D includes an AES/EBU digital input/output connector. These follow the AES/EBU standa rd.

Use 110Ω shielded twisted-pair cable (Belden 1800A, or equivalent). The length

•

of cable, cable characteristics, and quality of termination become extremely important because AES/EBU signals have a spectrum with significant energy to 6MHz. Do not use standard au di o cab le fo r AES/E BU a pplica tion s.

Impedance mismatch ing and noise are the most common causes of trouble with AES/EBU signals, usually manifestin g as pops or clicks in the o utput audio, or total loss of synchronization lock. Impedance mismatching can be caused by use of an inappropriate cable type, poor cable termination technique, or improper termination of the transmission line either in the source, or receiver equipment. Induced noise may prevent the AES/EBU receiver from locking to the incoming data stream. For this reason, cable length is generally rec ommended to be less tha n 100 meters (a pprox. 328’).

Each digital input or output line carries both the left and right stereo channels. The digital input clip level is fixed at 0dB relative to the maximum digital word (0dBFS). Sin ce the inp ut meter s mo nitor clip le vel s, th e maximum digital input will make the meters display 0dB. The reference level is adjustable using either the reference level determines the amount of gain reduction. The output level is adjustable using the to full scale, and is adjustable from 0.0dBFS to −20dBFS.

DO 100% control. This control is in dB, referenced

DI REF VU or DI REF PPM contro ls. The

Page 12

2-12

INSTALLATION OPTIMOD-FM 2200

Composite Output

There are two independent composite baseband outputs (containing the encoded

•

stereo signal and the stereo pilot tone).

Each output has an independent output level control and can be strapped for 0Ω or 75Ω source im pe danc e. Ea ch outpu t ca n d rive u p to 8V peak -to peak into 75Ω in para llel with up to 0.047 before any noticeable performance degradation occurs.

Connect the 2200’s c omposite output to the exciter input with up to 100 feet

•

(30.5m) of RG-58/U or RG-59 /U coaxial cable termina ted with BNC connectors.

Longer runs of coax may increase problems with noise, hum, and RF pickup at the exciter. In general, the least troublesome installations place the 2200 close to the excite r a nd limit th e le ng th o f th e c om posite ca ble to less than 6 feet (1.8m).

We do not recommend that the excite r inpu t be ter minate d by 50Ω or 75Ω unless this is unavoidable. Because the frequencies in the stereo baseband are low by comparison to RF or video, and because the characteristic impedance of coaxial cable is not constant at very low frequencies, the transmission system tends to have more accurate amplitude and phase response (and thus, better stere o sepa ration ) if the coax is driv en by a ver y low impedance source and is terminated with greater than 1kΩ at the exciter end. This also eases thermal stresses on the output amplifier in the stereo encoder, and can thus increas e equipme nt life.

If the Orban CIT25 Composite Isolation Transformer is used, the exciter must present a 1kΩ or greater load to the transformer for proper trans- former operation.

Designed to be installed adjacent to each exciter, the CIT25 Composite Isolation Transformer provides ground loop isolation between the OPTIMOD-FM composite output and the exciter’s input, and presents OPTIMOD-FM with a balanced floating loa d.

µF in cable and input capacita nce

Grounding

Very often, g rounding is approach ed in a “hit or miss” manner. But with ca re it is possible to wire an au dio studio so that it provides maximum protec tion from powe r 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 2200 ha s b a lanced in puts.

Page 13

OPTIMOD-FM 2200 INSTALLATION

(Grounding continued)

All equipment circuit grounds must be connected to ea ch other; all equipment

•

chassis grounds must be connected together. In a low RF field, aud io cable shields should be connected at one end only —

•

preferably the source (output) 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. Whenever coaxial cable is used, shields are automatically grounded at both ends

•

through the terminating BNC connectors.

Power Ground

Ground the 2200 chassis through the third wire in the power cord. Proper

•

grounding t echniqu es never leave equipment chassis unconnected to power/earth ground. A proper power ground is essential to safe operation. Lifting a chassis from power ground creates a po tential safety hazard.

2-13

Circuit Ground

To maintain the same potential in all equipme nt, the circu it (audio) grou nds mus t be connected togeth er:

Circuit and chassis ground should always be connected by setting the 2200’s GND

•

LIFT switch to GND, except w hen the 2200 ’s optional s tereo encode r composite

output is driving an unbalanced exciter input. This is an unbalanced-to-unbalanced connection, so the ground loop that would otherwise occur must be broken by setting the 2200’s

Alternately, you can balance and float the exciter input with the Orban CIT25 Composite Isolation Transformer — (call Orban Customer Service).

In high RF fields, th e s ystem is usually gro unde d th ro ug h th e e qu ipme nt r ac k in

•

which the 2200 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 .

GROUND LIFT switch to LIFT.

Older Exciters

Most exciters have straightforward wideband inputs, and no special considerations are involved. If you have an older exciter requiring special wideband interfaces,

contact Orban Customer Service.

Page 14

2-14

INSTALLATION OPTIMOD-FM 2200

8. Power up the 2200.

A Plug in the 2200’s power cord.

With no i np ut pr og ra m mat eri al, the re d Gat ed LE D and o ne of t he green Function LEDs should be on. The AGC meter should ind ica te 10.0 .

The main screen app ears in the front window display .

on air:CLASSICAL PROTECT AnlgIn_Stereo

The main or “home” screen shows which processing preset is selected to be on-air, th e type of in put (analo g or digital), and the stereo enco der mode.

If the main screen does not a ppear, repeated ly press the Escape butto n until it does appear.

9. Physical install at i on i s com plete.

A Continue with system software configuration, on page 2-16.

We recommend you browse through the explanation of 2200 front panel controls and mete rs (on the f ollowing page s) befo re y ou bein g conf igurin g system software.

Page 15

OPTIMOD-FM 2200 INSTALLATION

2200 Front Panel

Screen Display labels the four soft key buttons and provides control setting information.

Screen Saver feature: The screen has a built-in screen saver that turns off the backlight afte r appro ximately one hour. The screen turns back on when any front panel control is touched. Note that buttons don’t perform their normal function when the screen is blank. Similarly, the control knob’s first turn is not read, until it stops for a second or so.

Contrast Button adjusts the optimum viewing angle of the screen display. Press this button to cycle through four contrast settings for the screen display.

Four Soft Key Buttons provide access to all 2200 functions and controls. The functions of the buttons change with each screen according to the labels at the bottom of each screen. Push a button:

To select options (always identified on the screen by all-capital-letter words surrounded by left and right vertical bars), press the button directly below the option.

2-15

Control Knob is used for changing data in one of three methods.

To scroll through submenu choices: Presets (on Recall Preset screen),

FULL CONTROL parameters (on Modify Processing FULL CONTROL

screen) and 8 Remote Inter fa ces (on System Setu p REMOTE INT ERFACE screen).

To change a para meter setting, by sim ultaneously holding down a soft key . The parameters being changed take effect immediately, except for the following system level contro ls: Encoder sc reen),

XTLK TEST. The setting for these controls do not take effect until th e soft

key is released. To adjust the

sound immediately.

INPUT, AO PRE-E, DO PRE-E, DO RATE, DO SYNC and

LESS-MORE control. Adjusting this control changes the

MODE (on test sc re en ), MODE ( on Stereo

Escape Button returns the user to the previous screen; pressing this button repeatedly will always return you to main screen, which shows the on-air preset name.

Recall Preset Button brings up a screen that displays the current on-air preset and next preset (w hich ca n be c hanged by tur ning the contro l knob). To pu t a differ ent pr eset on-air, turn the control knob to fin d the preset desir ed, then pres s the

RECALL NEXT

soft key.

When the button’s yellow LED is lit, the Recall Pre set scre en is display ed.

Page 16

2-16

INSTALLATION OPTIMOD-FM 2200

Modify Proces sing Butt on brings up a screen to modify par ameters for the current on-air pres et. For Two-Band pr esets: Protection preset,

When the button’s yellow LED is lit, th e Modify Proc essing screen (or one of its submenus) is displayed.

DRIVE and 30HzHPF.

LESS-MORE, EQ and FULL CONTROL. For the

System Setup Button brings up a screen to modify system settings (such as I/O levels). There are four System S etup submenus:

MOTE INTERFACE

When the button’s yellow LED is lit, the System Setup screen (or one of its submenus) is displayed.

, TEST.

I/O CALIB, STEREO ENCODER, RE-

Gain Reduction Meters indicate AGC, Bass, and Master Gain Reduction. All three meters operate over a −25.0dB to 2.5dB range. Note that the AGC and Bass meters are off when the Prot ect preset i s on-air.

HF Limiting LEDs light when the high-freque nc y con ten t of au dio is b eing limite d by the very fast high-frequency limiters. These LEDs indicate when greater than 0.5dB HF limiting is occurring.

Gated LED indicates gate activity, lighting when the input audio falls below the threshold se t by the gate threshold control (Mo dify Processing screen

GATE THRS

control). When th is happe ns, th e comp ress or’s re cove ry time is dras tica lly slowed to prevent noise rush-up during low-level passages.

Composite Meter is a 10-segment bargraph showing the stereo encoder’s composite output level before the composite level controls.

Function Button selects which of three functions are displayed in the Function meters: Enhance, L/R Input or L/R Output.

Function LEDs indicate which function is currently displayed by the Function meters: Enhance, L/R In put or L/R O utput. Press the Function button to tog gle between th e three functions.

Function Meter indicates level of Enhance, L/R Channel Input or Output, as selected with Function button. The meters operate over a −27dB to 0dB range. Input meters are referenced to clip leve l. Output mete rs are ref erence d to 100% modulation leve l. HF Enhance meter shows the active amount of enhancement activity. Since the HF Enhancement is program-dependent, it will vary with source material and the HF parameter. Note: HF Enhance is displayed only on the left-ha nd meter, be low “HF. ”

Stereo Encoder Screwdriver-Adjustable Controls

Orban supplies a special green-handled flat-blade screwdriver (Xcelite R3323) to adjust the stereo encoder controls.

Comp 1 sets the output level of Composite Output 1. Comp 2 sets the output level of Composite Output 2.

Page 17

OPTIMOD-FM 2200 INSTALLATION

Basic System Setup

Allow about about 30 minutes for system setup. You can set up all of the 2200’s required settings through Basic System Setup. It is a guided

procedure for adjusting all of the setup adjustments n eeded to get y ou on the air. System setup consists of: (1 ) setting the pre- emphasis, (2) se tting the analog input pe ak level, (3) setting the input reference level, (4) adjus ting composite, analog or digital output level and (5) recalling a processing preset.

The 2200 also contains a few special-feature parameters that are not included in this section. These parameter s can be adjusted immediately af ter Ba sic System S etup is co mpleted, o r they can be implemented during normal operation. All the I/O CALIB, STEREO ENCODER, REMOTE INTERFACE and TEST parameters are covered in depth, beginning on page 2-27.

To complete the following steps, you need to have a basic understanding of how to use the 2200’s front panel controls:

To change display c ontrast, re peatedly pre ss the Contrast button to adju st the display for best clarity.

To select options (always identified on the screen by all-capital-letter words surrounded by left and right vertical bars), press the button directly below the option.

To change a para meter setting (always identified by lower-case letter s or numerals), hold down the button directly be low the param eter setting, turn the control knob to scro ll throu gh ch oic es, and re lea se the button to set th e parameter. Note that most parameters take effect immediately when you turn the control knob. Some settings (e.g., INPUT status) will not take effect until the soft key button is released.

2-17

1. Begin System Setup.

A If you have not don e so already, plu g in the 2200’s po wer cord. The main screen

(shown below) appears in the window display.

If the main screen does not appear, repeatedly press ESC until it does appear.

on air:CLASSICAL PROTECT AnlgIn_Stereo

Change preset to most accurate initial setup: If on-air: is not

the Recall Preset button, hold down the control knob to scroll through preset list to release the button and press

Note: User can choose their preferred preset after setup is completed.

CLASSICAL PROTECT — This preset facilitates the

CLASSICAL PROTECT, press

next: soft key button and turn the

CLASSICAL PROTECT, then

RECALL NEXT soft key button.

Page 18

2-18

INSTALLATION OPTIMOD-FM 2200

2. Set pre-emphasis to the st and ard used in your count ry.

A Press System Setup button to access the System Setup screen.

B From the System Setup screen, press the STEREO ENCODER soft key button.

C Set processing Pre-Emphasis

[50µs] or [75µs] This controls the pre -empha sis of the inte rnal pr ocessing’s high-freq uency

limiters, and the pre-emphasis of the stereo encoder’s output. It does not control whether analog or digital left/right outputs are flat or pre-emphasized.

Set this control to the pre-emphasis standard in your country:

µs NORTH, CENTRAL, SOUTH AMERICA

50µs EUROPE, ASIA, AFRICA, PACIFICA 75

Hold down the button directly below the words “ control knob counterclockwise to choose 50 75

µs, then release the button.

EXCEPT

µs TAIWAN, KOREA, THAILAND

PROC PRE-E,” turn the

µs, or clockwise to choose

3. Set Analog O utpu t pr e-em ph asis.

[Skip this step if you are not using the 2200’s analog outputs.]

A Press System Setup button to access the main System Setup screen. B From the System Setup screen, press the I/O CALIB soft key but t on .

C Press ANLG OUTP CALIB soft key button.

Page 19

OPTIMOD-FM 2200 INSTALLATION

| AO 100%| AO PRE-E | |_22.1dBu|pre-emph |

D Set Analog Output pre-emphasis status.

[flat] or [pre-emph] This controls whether the an alog lef t/right outpu ts produce a fla t signal, or

a pre-emphasized signal, following the pre-emphasis set with Stereo Encoder

PROC PRE-E control in step 2 abov e.

Hold down the button directly below the words “ control knob counterclockwise to choose flat, or clockwise to choose pre-emphasis, then release the button.

4. Set Digital Output pre-emphasis status.

[Skip this step if you are not using th e 2200- D’s dig ital outpu t. Digita l I/O par ameter s only available with Model 2200-D.]

AO PRE-E,” turn the

2-19

A Press System Setup button to access the main System Setup screen. B From the System Setup screen, press the I/O CALIB soft key but t on .

C Press DIG OUTP CALIB soft key button.

D Set DO PRE-E (Dig ital Outp ut pr e-emp hasis statu s).

[flat], [pre-emph], [J.17], or [J.17+pre -e ] Within the audio processing, the audio signal is pre-emphasized to either

50µs or 75µs (as set with Stereo Encoder PROC PRE-E control in step 2 above).

Hold down the button directly below the words “ control knob to scroll through the output pre-emphasis choices, then release the button to set the parameter.

DO PRE-E,” turn the

Page 20

2-20

INSTALLATION OPTIMOD-FM 2200

[flat]: Set the 2200-D’s digital output to flat if the output feeds a dig ital STL modem using lossy bit-rate re du ctio n (su ch as Marti MD-2, Moseley DSP 6000, and TFT DMM92); these modems are not d esigned to c arry pre-em phasized AES/EBU data.

[

pre-emph]: Use the pre-emph setting when the AES/EBU digital output

of the 2200-D is sent directly to the AES/EBU input of a digital exciter, such as the Harris “Digit. ” Also, if you ar e using a digital link with no data rate reduction, the 22 00 -D’ s ou tpu t should remain pre-empha siz ed .

[J.17], or [J.17+pre-e]: Use these settings to apply J.17 pre-emphasis or J.17 plus the pre-emphasis set in step 2 above.

5. Enable Analog Inputs.

[Skip this s tep if you do not have Mode l 220 0-D o r if y ou a re not using the analo g inputs.]

A Press System Setup button to access the main System Setup screen. B From the System Setup screen, press the I/O CALIB soft key but t on .

C Press ANLG INP CALIB soft key button.

D Enable Analog Inputs.

[analog], [digital] or [dig+J17] Hold down the button directly below the word “

knob counterclo ck wise to c ho ose analog, then release the button to se t the parameter.

6. Adjust analog l eft / ri ght input peak cli pping level.

[Skip this step if you are not using the 2200’s analog inputs.]

INPUT,” turn the control

A Press the meter button so that the L/R Channel Input meters are active. B Press System Setup button to access the System Setup screen.

Page 21

OPTIMOD-FM 2200 INSTALLATION

C From the System Setup screen, press I/O CALIB soft key button.

D Press ANLG INP CALIB.

2-21

E Set Analog Input Clip level.

This step calibrates th e level at which the 2 20 0’ s A-D (Analog-to-Digita l) converter clips to the absolute maximum peak level that your installation supplies to the 2200’s analog input.

This setup maximizes the 2200’s signal-to-noise ratio. If the clip level is set too low, the 2200’s analog-to-digital converters will overload and distort on program peaks. If the clip level is set too high, the signal-to -noise ratio will suffer. Use care and atten tion in setting this adju stm ent.

a) Play program material from your studio at a much higher level than

normal — turn the fad ers up all th e way! This will produ ce the highest peak level output that your system can produce .

b) Adjust th e 2200’ s

−3dB on the L/R Channel Input meters. Hold down the button directly below the words “

control knob to scroll from +5.0dBu to +27.0dBu (or −17.0dBu to +5dBu, if input sensitivity jumpe rs were reset), then release the button.

Observe the L/R Channel Input meters on the 2200 for a long period of time; be sure to observe live announcer voice. If this setting is mis-adjusted, distortion will result.

0dB indicates input clipping on the 2200. These meters should never peak as high as 0dB with pro gram material.

c) If you are using an Orban 4000A Transmission Limiter or Orban

8200ST OPTIMOD ahead of the 2200, activate the tone oscillator on either unit. Then adjust the 2200’s Channe l Input met ers read s −3dB.

AI CLIP so that the program peaks just reach to about

AI CLIP,” turn the

AI PEAK so that the 2200’s L/R

Page 22

2-22

INSTALLATION OPTIMOD-FM 2200

7. Calibrate analog i nputs to your standard studio level.

[Skip this step if you are not using the 2200’s analog inputs.]

A Press the meter button so that the L/R Channel Input meters are active. B Press System Setup button to access the System Setup screen.

C From the System Setup screen, press I/O CALIB soft key button.

D Press ANLG INP CALIB.

E Set Analog Input Reference level.

This step calibrates the 2200 to the level to which your studio operators peak their program material on the studio meters. This assures that the 2200’s processing prese ts will ope ra te in their preferred ra ng e.

Note that in this step, we are calibrating to the normal indication of the studio meters; this is quite diffe rent from the actual pea k lev el.

Calibration with Audio: Follow these steps if y ou ar e able to in terru pt or distort programming. This will achieve the most precise calibration. You may adjust this level with a standard refer ence/line-up le vel tone from your studio or with program material.

Calibration by Numbers: Follow these steps if you cannot interrupt or distort programming.

Calibration with Audio

a) Depending on whether you monitor program levels by VU or PPM

meters at the console or mixer, adjust the appropriate 2200 reference level control (either

−10dB on the Master Gain Reduction meter when audio is peaking at normal levels (e.g., 0VU).

AI REF VU or AI REF PPM) for an aver age of

Page 23

OPTIMOD-FM 2200 INSTALLATION

Hold down the appropriate reference level soft key button, turn the control knob to scroll to the appropriate leve l, th en release the bu tton .

Calibration by Numbers

a) Depending on whether you monitor program levels by VU or PPM

meters at the console or mixer, adjust the appropriate 2200 reference level control (either referenc e level.

Hold down the appropriate reference level soft key button, turn the control knob to scroll to the appropriate leve l, th en release the bu tton .

AI REF VU or AI REF PPM) to your studio’s

8. Enable Digital Input.

[Skip this s tep if you do not have Mo del 220 0-D or if y ou are not using the digital input.]

A Press System Setup button to access the main System Setup screen. B From the System Setup screen, press the I/O CALIB soft key but t on .

2-23

C Press DIG INP CALIB soft key button.

Note: If DIG STAT is no lo ck , then the AES/EBU digital input i s not valid . Check connections, cab ling , an d dig ital sour ce .

D Enable Digital Input.

[analog], [digital] or [dig+J17] Hold down the button directly below the word “

knob clockwise to choose digita l, or digital+ J17, th en rele ase the butto n to set the parameter.

9. Calibrate Digi tal I n p u t to yo ur stan dar d studio level.

INPUT,” turn the control

[Skip this step if you do not hav e Model 2200-D or if you are not using the 2200-D’s digital input.]

Page 24

2-24

INSTALLATION OPTIMOD-FM 2200

A Press System Setup button to access the System Setup screen.

B From the System Setup screen, press the I/O CALIB soft key but t on .

C Press DIG INP CALIB.

D Set Digital Input Reference level.

Calibrate with Audio if you are able to interrupt or distort programming. This will achieve the most precise calibration.

Calibrate by Numbers if you cannot interrupt or distort programming.

Calibrate with Audio a) Play program material from your studio , peak ing at the lev el to whic h

you normally peak program material (typically 0VU if your console uses VU meters).

b) Adjust the ap propria te 2200 ref eren ce lev el c ontro l (eithe r

or DI REF PPM) for −10dB on the AGC Gain Reduction meter. Hold down the appropriate reference level soft key button, turn the

control knob to scroll to the appropriate leve l, th en release the bu tton .

Calibrate by Numbers a) Adjust the appropria te 2200 ref eren ce lev el c ontro l (eithe r

or DI REF PPM) for your studio’s reference level. Note that the numbers you see represent dB below digital full-scale.

DI REF VU

Hold down the appropriate reference level soft key button, turn the control knob to scroll to the appropriate leve l, th en release the bu tton .

Page 25

OPTIMOD-FM 2200 INSTALLATION

10. Adjust Composi t e Out p u t level co nt ro l s.

[Skip this step if you are not using the 2200’s composite outputs.]

A Feed the 2200 with program material or the built-in 400Hz TEST tone.

To turn on the TEST tone: a) Press System Setup button. b) Press c) Set

d) Activate 400Hz test tone: Hold down the

To turn off Hold down the

operate, the n re lea se the button.

B Adjust the 2200’s Comp 1 and Comp 2 level controls — screwdriver slots on the left

TEST soft key button.

TONE to 400Hz: Hold down the TONE soft key button, turn the

control knob to 400 Hz, then rele asing the bu tton .

MODE soft key button, turn

the control knob to scroll to

TEST tone:

MODE tone soft key button, turn the control knob to scroll

tone, then release the button.

side of the fr ont p anel — fo r 100% Total Peak Mod ulation of your F M exc iter, as indicated on a modu lation monito r, or mod ulation ind icator on your exc iter. In the U.S., you can modulate higher than 10 0% when using SCAs. Refer to th e appropriate FCC rules.

If using a composite STL, adjust the 2200’s Comp 1 and Comp 2 level controls for 100% Total Modula tion of yo ur composite ST L transmitte r, as indicated on the STL’s modulation indicator. Then adjust your STL’s receiver output level control and/or FM exciter composite input level control for 100% Total Modulation of your FM exciter, as indicated on a modulation monitor, or modulation ind ica tor on your exciter.

2-25

C Continue to step 12.

1 1. Adju st Anal og Lef t/Rig ht or Di git al Outp ut level control s.

[Skip this step if you are not using the analog Left/Right or Digital Outputs.]

A Press System Setup button to access the main System Setup screen. B Access analog or digital output level control. (Press ANLG OUTP CALIB or DIG OUTP

CALIB as required.)

| AO 100%| AO PRE-E | |_22.1dBu| pre-emph |

Page 26

2-26

INSTALLATION OPTIMOD-FM 2200

C Set Output level.

Hold down AO 100% or DO 100%, as applicable, and adjust the knob. Adjust the output level controls for 100% Total Modulation of your FM

exciter, or discr ete left/r ight ST L, a s indica ted on a modulatio n monito r, or modulation indicator o n your exciter or STL . In the U.S., you can m odulate higher than 100% when using SCAs. Refer to the ap pr opria te F CC rule s.

12. Select a preset that co mp l emen ts t he p r o gr am f or mat of your station.

This step selects the processing to complement the program format of your station. After this step, y ou can always s elect a different pro cessing prese t, modify presets to

customize your sound, and store these presets as user presets.

A Press Recall Preset button to access the Recall Preset screen.

on air:CLASSICAL PROTECT |RECALL| next: 2B GENERAL PURPOSE | NEXT |

B From the Recall Preset screen, select a preset.

Turn the control knob to scroll through the preset list. When you find a desired preset, press the button to return to main screen.

RECALL NEXT soft key button. Press Escape

13. System Setup Completed !

If you want to set up additional input/outp ut parame ters, or re set any setup adjustments, continue to “System Setup Con trols,” on th e followin g pages. If you are ready to use the 2200, proceed to Section 3 for important 2200 operation informa tion.

Page 27

OPTIMOD-FM 2200 INSTALLATION

System Setup Controls

System Setup includes access to the following 2200 controls: I/O Calibration, Stereo Encoder, Remote Interface and Test mode. This section provides steps to access these System Setup controls, and descriptions of their respective controls and parameters.

I/O CALIB (I/O Calibration)

I/O Calibration provides the user with control of the audio input and output settings. Model 2200 provides control of analog I/O settings. Model 2200-D provides control for both analog and digital I/O settings.

To access I/O Calibration controls:

A Press the me t er Function button so that the L/R Channel Input meters are active. B Press System Setup button to access the System Setup screen.

2-27

C From the System Setup screen, press I/O CALIB soft key button.

D Access the desired input and output controls. Press the appropriate soft key, located

directly below the words that indicate the I/O control you wish to adjust.

To change any of the I/O Calibration controls, hold down the soft key button directly below the screen function you wish to change, turn the control knob counterclock wise and/or clockwise to find the desire d setting, then release the button .

Page 28

2-28

INSTALLATION OPTIMOD-FM 2200

ANLG INP CALIB (Analog Inpu t Calibratio n)

INPUT

•

[analog], [digital] or [dig+J17] This sets the analog inputs, the AES/EBU digital input, or the AES/EBU

digital input + J.17 pre-emphasis as the audio sour ce . Note: Digital sources are only available with Model 2200-D. If digital lock is lost, the unit automatically switches to analog input. The

unit automatically retur ns to digita l inpu t afte r 1 second of lock. Note that dig+j17 de- emphasizes th e digital signa l according to the CCITT

J.17 standard.

AI REF VU and AI REF PPM

•

Analog Input REFerence VU: in two ranges, [−18.0dBu to +21.0dBu] or [−40.0dBu to −1.0dBu], jumper- selectable, in 0.5dB steps.

Analog Input REFerence PPM: in two ranges, [ −13.0dBu to +26.0dBu] or [−35.0dBu to +4.0dBu], jumper- selectable, in 0.5dB steps.

Note:

AI REF VU and AI REF PPM have two ranges; high and low,

dependent on the input sensitivity jumper settings (see page 2-3). As shipped, the 2200 uses the hig he r ra nge.

Note:

AI REF VU and AI REF PPM are the same control at the system level

and simply display the data in two scales. Moving either one changes the other.

This step sets the center of the 2200’s gain reduction range to the level to which your studio operators peak their program material on the studio meters. This assures that the 2200’s processin g presets will operate in their preferre d range.

You may adjust thi s level with a sta ndard re ferenc e/line-up le vel tone from your studio or with program material.

Note that in this step, we are calibrating to the normal indication of the studio meters; this is quite different from the actual peak level or, in the case of PPMs, the actual average or RMS level.

If you know the reference VU or PPM level that will be presented to the 2200, se t the appr opria te shown directly below.

The complete procedure for calibrating System Setup, step E, page 2-22. Follow the complete procedure to calibrate the 2200 to your standard studio level.

To verify the correct setting of AI REF level with progra m material: Recall the Observe the Gain Reduction meter on a wide range of program material,

voice and music. It should average between 5.0 and 15.0dB. Also observe the Gated indicator. It shou ld go out when progra m is present. If the Gain Reduction meter averages less gain reduction (higher on the

meter), or if the Gated indicato r stays on when program mater ial is present, go back to the I/O CALIB screen, an d re-adjust the AI REF lev el to a lower level.

CLASSICAL PROTECT preset.

AI REF to this level, but d o verify it with th e steps

AI REF level is given in Basic

Page 29

OPTIMOD-FM 2200

If the AGC Gain Reduction meter av erag es more gain re ductio n (lo wer on the meter), go back to the I/O CALIB screen, and re-adjust the AI REF level to a higher level.

When finished, reset AGC to prior to verifying AI REF level).

Model 2200-D only: This control has no effect on the AES/EBU digital input.

AI CLIP (Analog Input Peak/Clip Level)

•

[+5.0dBu to +27.0dBu] or [−17.0 dBu to +5.0 dBu], 0.5dB steps. Note:

sensitivity jumper settings (see page 2-3). As shipped, the 2200 uses the higher rang e.

This setting calibrates the lev el at wh ich the 2200 ’s A-D (Ana log-to -Dig ital) converter clips to the absolu te ma ximum peak level that your installation supplies to the 2200’s analog input.

This setting maximiz es the 2200’s sign al-to-noise r atio. If th e is set too low, the 2200’s analog-to-digital converters will overload and distort on program peaks. I f will suffer. Use care and attention in setting this adjustment.

The complete procedure for calibrating System Setup, step 6, page 2-20. Follow the complete procedure to calibrate the 2200 to your standard studio level.

If you know the maximum peak level that will be prese nted to the 2200, set

AI CLIP to about 2dB higher than this leve l (for sa fe ty) .

To verify the correct setting of AI CLIP with program materia l: Press L/R Channel Input button to view the Input meters. Access the AI CLIP control in the System Setup AI INP CALIB screen. Observe the L and R Input meters (the two meters on the right) on a wide

range of program material, inc lud ing live studio voice. The meters should never reach as high as 0dB, which is the level at which the input A-D converter clips. But on the highest pea ks, the meters should in dicate as hig h as −3dB.

Be sure to observe the meters on live voice, which tends to have higher level peaks than record ed music.

If necessary, re-adjust the Model 2200-D only: This control has no effect on the AES/EBU digital

input.

out if required, (e.g., if that was its setting

AI CLIP has two ranges; high and low, dependent on the input

AI CLIP level

AI CLIP is set too high, the sig nal-to-noise ratio

AI CLIP level is given in Basic

AI CLIP level.

INSTALLATION

2-29

ANLG OUTP CALIB (Analog Out put Calib ration )

AO 100% (Analog Output Level)

•

[−22.1dBu to +20.0dBu], 0.1dB steps Adjusts the analog left/rig ht output level. The level in dication on the scree n

is the maximum peak output level that the processing will produce to modulate the transmitter to 100% peak modula tion.

AO PRE-E (Analog Output)

•

[flat] or [pre-emph]

Page 30

2-30

INSTALLATION OPTIMOD-FM 2200

Controls whether the analog left/right outputs produce a flat signal, or a pre-emphasized signal, following the pre-emphasis set with Stereo Encoder

PROC PRE-E control.

DIG INP CALIB (Digital Inpu t Calibrati on) Note: Digital Input controls are only applicable to Model 2200-D. Digital input uses sample

rate conversion. The internal process rate is always based on internal clock.

INPUT

•

[analog], [digital] or [dig+J17] This selects the digital or analog input of the 2200-D. When digital (or

digital+J17) is selected, and the digital input (incoming clock) is lost, the 2200-D will switch to a nalog input. the unit automatically return s to dig ital input after 1 second of lock. Note that you can also manually switch between analog input an d digital input.

Note that dig+J17 applies J.17 de-e mpha sis to the inc oming digital audio.

DIG STAT

•

[lock] or [no lock] DIG STAT is not user-adjustable . It indicates the status of the dig ital input,

either locked (if the AES/EBU digital input is valid) or unlocked (if it is not valid). When digital input is unlocke d and input was selected as digital, then the input has automatica lly switc he d to the ana log inpu t.

DI REF VU and DI REF PPM

•

Digital Input REFerence VU: [−30.0dBFS to −10dBFS], in 0.5dBFS steps. Digital Input REFerence PPM: [−22.0dBFS to −2.0dBFS], in 0.5dBFS

steps. Note: DI REF VU and DI REF PPM are the same control at the system

level and simply displa y the data in two scales. Moving e ither on e chan ges the other.

The incoming audio signal can be referenced from −30dB to −10dB of the maximum allowable digital word.

DIG OUTP CALIB (Digital Outp ut Cal ibration ) Note: Digital Output controls are only applicable to Model 2200-D.

DO 100% (Digital Output Level)

•

[−20.0dBFS to 0.0dBFS], in 0.1dB steps This control provide s up to 20 dB of attenuation to the digital o utput level.

This level indicates the digital outpu t leve l corre spon din g to 100% mo dulation, in dB below digital full-scale.

DO PRE-E

•

[flat], [pre-e mp h] , [J.1 7] or [J.1 7+ pr e-e] Within the audio processing, the audio signal is pre-emphasized to either

50µs or 75µs (as set with Stereo Encoder control sets whether the digital AES/EBU output rema ins pre-emphasiz ed,

PROC PRE-E control). This

Page 31

OPTIMOD-FM 2200

produces a flat signal, applies J.1 7 pre-e mphasis, or app lies a combin ation of J.17 and previously set pre-emphasis.

Important: The 2200-D has the ability to produce an AES/EBU output signal with the pre-emphasis removed. It is sometimes desirable to locate the 2200 at the studio site, with its output feed ing a digita l STL . Howev er, digital STL modems using lossy bit-rate reduction (such as Marti MD-2, Moseley DSP 6000, and TFT DMM92) are not designed to carry pre-emphasized AES/EBU data. The AES/E BU inputs applied to th ese units must be flat. If this is your configuration, you must make the 2200-D’s AES/EBU output flat.

When the AES/EBU digital output of the 2200-D is sent directly to the AES/EBU input of a digital exciter, such as the Harris “Digit,” the 2200D’s output should remain pre-emphasized. Also, if you are using a digital link with no data rate reductio n, the 2200-D’s outpu t should be pre-emp hasized.

DO (SAMPLING) RATE

•

[32kHz], [44.1kHz] or [4 8kHz] This control sets the data rate of the OPTIMOD digital output to 32kHz,

44.1kHz or 48kHz.

INSTALLATION

2-31

DO SYNC

•

[internal] or [external] This control deter mines whe the r the digita l outpu t samp le ra te i s locke d to

the digital input sample rate, or whether internal sync (clock) is provided for 32, 44.1 and 48kHz output sample rates.

External sync is provided to sync the output to the input rate. In external mode, the digital output rate is derived from and frequency-locked to the digital input rate. If the input is 32kHz, the output will be 32kHz. If the input is 44.1kHz, the output will be 44.1kHz. If the input is 48kHz, the output will be 48kHz. The unit auto matically switch es to inter nal sync and selected output sample rate if the input rate exceeds +/-4% of the selected output rate ( after 1 second at a valid sample rate.

DO SYNC may be external while INPUT is analog; in this case, the analog

input provides the au dio source and the d igital input p rovides sync only for the digital output.

DO RATE). The unit automatically returns to external sync

Page 32

2-32

INSTALLATION OPTIMOD-FM 2200

Stereo Encoder (and processing Pre-Emphasis)

Stereo Encoder provides the u ser with control of the digital stereo encoder.

To access Stereo Encoder controls:

A Press System Setup button to access the System Setup screen.

B From the System Setup screen, press STEREO ENCODER soft key butto n .

To change any of these controls, hold down the soft key button directly below the screen function you wish to change, turn the control knob counterclockwise and/o r cloc kwise to find th e de sired setting, then rele ase the button.

PROC PRE-E

•

[50µs] or [75µs] This controls the pre -empha sis of the inte rnal pr ocessing’s high-freq uency

limiters, and the pre-emphasis of the stereo encoder’s output. It does not control whether analog left/right outputs are flat or pre-emphasized; they are controlled by

Set this control to the pre-emphasis standard in your country:

µs NORTH, CENTRAL, SOUTH AMERICA

µs EUROPE, ASIA, AFRICA, P ACIFICA

75µs TAIWAN, KOREA, THAILAND

AO PRE-E in the System Setup ANLG OUTP screen.

EXCEPT

Page 33

OPTIMOD-FM 2200

MODE (modulation)

•

[stereo], [pilotoff], [mono-L],[mono-R], [mono-SUM] This control sets the mod ula tion type, as follows:

stereo switches the 2200’s stereo encoder on, with pilot on. The level of

the pilot tone is adjustable with the [

pilotoff] switches the 2200’s 19kHz stereo pilot tone off.

mono-L (mono from le ft) switches th e 22 00’s ster eo e ncoder off, using the

left input as the program s ource. mono-R (mono from right) switches the 2200’s stereo encoder off, using

the right input as the program source .

mono-SUM (mono from sum) sums the audio prior to processing and

switches the 2200’s stereo encoder off.

PILOTLVL (Pilot Level)

•

[8.0 % to 10.0 %] , 0.1 steps This control sets th e level of the 2200’s 1 9k Hz ste reo pilot tone in p ercent

modulation. The pilot will go off au tomatically if a mono mode i s selected.

XTLK TEST (Stereo Generator Test)

•

[normal], [main>sub] or [sub>main] To facilitate measurement of main channel-to-subchannel [

channel-to-main channel [ vided. These apply the right channel audio directly to the main channel (L+R) or subchannel (L−R) inputs of the stereo encoder.

This control only affec ts the stereo encode r output, not the analo g or digital audio outputs.

With to stereo, and returns was active when the test was first entered.

PILOTLVL control (see below).

m>s]and sub-

s>m] crosstalk, two special test modes are pro-

XTLK TEST set to m>s or s>m, the MODE is automatically switched

MODE is then limited to stereo or pilot off. When the user

XTLK TEST to operate, the unit reverts to the MODE setting that

INSTALLATION

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INSTALLATION OPTIMOD-FM 2200

Remote Interface

The 2200 features eight rear panel opto-isolated inputs that allow you to direct the 2200 to perform certain functions when a voltage (6-24V) is presented to the input. Functions are assigned in the System Setup Remote Interface control screen.

To access Remote Interface controls:

A Press System Setup button to access the System Setup screen.

B From the System Setup screen, press the REMOTE INTERFACE soft key button.

The actions of the re mote interfa ce will update the main scr een accord ingly with the new on-air preset ( e.g., preset name , tone or bypa ss). They will not change any other 2200 screen.

Remote Interface poin ts ca n be assign ed as follows: [user pst x], where x stands for a numeral betwe en 1 and 8: Switches a use r

preset on the air. Any of the eight user programming presets may be recalled by the co ntrol inte rface. A momentary pulse of volta ge will switc h this function.

[x], where x stands for a fa cto ry preset na me : Switc he s a fa cto ry p re set o n the air. Any of the eight factory programming presets may be recalled by the control interface. A momentary pulse of voltage will switch this function.

[bypass]: Switches the 2200’s into bypass mode. A momentary pulse of voltage will switch this function.

[tone]: Switches the 2200’s test ton e on. A momentary pul se of voltage will switch this function.

[exit test]: If a test preset is switched on the air, previous processing preset (from either tone or bypass modes, or from

XTLK TEST).

[stereo]: Switches the 2200’s stereo encoder on, and the pilot on (if it was off). A momentary pulse of voltage will switch thi s function.

exit test reverts to the

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OPTIMOD-FM 2200 INSTALLATION

[mono-L]: Switches the 2200’s stereo encoder off, using the left input as the program source. A momentary pulse of voltage will switch this function.

[mono-R]: Switches the 2200’s stereo enco der off, using the right inp ut as the program source. A momentary pulse of voltage will switch this function.

[mono-SUM]: Switches the 220 0’s stereo encode r off, sum min g the aud io prior to processing. A momentary pulse of voltage will switch this function.

[analog in]: Selects the analog inputs as the audio source. A momentary pulse of voltage will switch this function.

[digital in]: In Model 2200-D only; Selects the AES/EBU digital input as the audio source. A momentar y pul se of voltag e will switch thi s function

[dig+J17 in]: In model 2200-D only ; Selects the AES/EBU digital inp ut as the audio source and applies J.17 de-emphasis prior to the processing. A momentary pulse of voltage will switch this function

TEST Mode

The 2200’s Test Mode allow the user to calibrate, set up and test the transmission chain.

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To access Test Mod e con tr ol s:

A Press System Setup button to access the System Setup screen.

B From the System Setup screen, press TEST soft key butto n .

MODE

•

[operate], [tone] or [bypass] This control activates Tone Mo de, Bypass Mode, o r normal oper ate mode . Select operate to use 2200 processing. Select Tone to put a tone on-air. Test tone s ap ply 100% L +R modulation.

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INSTALLATION OPTIMOD-FM 2200

Select Bypass to bypass 2200 processing. Note that bypass includes 50µs

µs pre-emphasis.

or 75

TONE

•

[30 Hz], [100 Hz], [400 Hz], [1 000 Hz] , [1 0000 Hz], [BESSEL] or [150 00 Hz]

This control set the freq uency of the test tone. The ton e is activated in T one Mode (see above). The default tone frequency is 100Hz. The be ssel tone is

13.5868kHz. It causes +/-75kHz deviation of the FM carrier when the carrier frequ ency (as o bserved on a spectr um analyz er) nul ls for the second time as the level of the tone is increa se d from zer o modu latio n.

BYPASS GAIN

•

[−18dB to +15dB], in steps of 1dB This control sets the level of signal passed through the 2200 in Bypass

Mode. The default bypass gain setting is 0dB. Increase or decrease the Bypass signal level, as desired.