Radio Systems GEN-DD A/WC User manual

Radio Systems, Inc. GEN-DDA/WC & DDA/WC-4x4 Manual
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DDA/WC-4x4 Distribution Amplifier
and
GEN-DDA/WC Sync Generator Manual

Radio Systems, Inc. GEN-DDA/WC & DDA/WC-4x4 Manual
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Contents
Overview.........................................................................4
Installation ......................................................................5
Operation ........................................................................6
Connections.....................................................................7
Signal Flow Diagram - GEN-DDA/WC.................................9
Signal Flow Diagram - DDAWC-4x4.................................. 10
Specifications - GEN-DDA/WC .......................................... 11
Specifications - DDA/WC-4x4 ........................................... 12
Warranty ........................................................................ 13
Repair Policy................................................................... 13
Return Instructions.......................................................... 13

Radio Systems, Inc. GEN-DDA/WC & DDA/WC-4x4 Manual
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Overview
TheRadio Systems Digital Distribution System is comprised of two units:
*ModelGEN-DDA/WC
*ModelDDA/WC-4x4
The Radio Systems model GEN - DDA/WC is a professional quality digital sync. generator with an
integratedAES/EBUdistributionamplifierandsixWordClockoutputs.
ThetwofullyindependentAES/EBUinputsectionsfeaturebalancedinputstofourbufferedbalanced
outputs.AthreedigitLEDdisplayforeachsectionreadsoutthesamplingfrequency.TwoLED’sfor
eachsection indicatePLL(unlock)anddata(validity)errors.
TheRadioSystemsmodelDDA/WC4x4isaprofessionalqualitydigitaldistributionamplifierwithfour
independentsectionsoffouroutputAES/EBUdistributionandsixWordClockoutputs.
TheAES/EBUinputsectionsfeaturebalancedinputstofourindependent,bufferedbalancedoutputs.
A three digit LED display for each section reads out the sampling frequency. Two LED’s for each
sectionindicatePLL(unlock)anddata(validity)errors.

Radio Systems, Inc. GEN-DDA/WC & DDA/WC-4x4 Manual
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Installation
Mounting
TheGEN-DDA/WCandDDA/WC-4x4each occupyonly1rackunit(1-3/4 inch) of height in a 19 inch
EIArack. Toallowforadequateventilation,avoidmounting the unit directly above large heat
producing equipment such as power amps or power supplies.
When stacking units, it is recommended that one rack space (1-3/4 inch) remain open between
everythreeunits.
Power
Mains are wired using a standard IEC power cord.
Theinternalswitch-modepowersupplyauto-detectsincomingvoltagesfrom90to246V AC, 50/60
Hz. An internal 1 amp fuse protects the circuitry from overload

Radio Systems, Inc. GEN-DDA/WC & DDA/WC-4x4 Manual
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Operation
Model GEN-DDA/WC
Intheevent ofanexternalAES/EBU signalfailuretoeither inputsection,the unitautomatically
switches to a high precision internal signal generator. Front panel indication and selection of the
stand-byinternalsamplefrequencyisprovided.Theinternalprecisiongeneratormaybeselectedto
generateclocksinlieu of theexternalAES/EBUinput.
Push the “INT” front panel switch to select the internal sync generator. Select any sample rate.
Inaddition,audio thatappearswithan AES/EBUinputwillbe distributedtothe AES/EBUoutputsif
the AES/EBU input is selected as the generator source.
AnexternalWord-Clocksignalinputisprovided,bufferedanddistributedtosixindependentoutputs.
In the event of external source failure, or at the user’s option, a frame-clock reference signal,
selectable from either of the two AES/EBU inputs is regenerated and output to the Word Clock
outputs.
Model DDA/WC-4x4
Anexternal WordClocksignalinputisprovided,bufferedanddistributed tosixindependentoutputs.
In the event of external source failure, or at the user’s option, a frame-clock reference signal,
selectablefromanyof the four AES-EBUinputsisregeneratedand output to theWord-Clockoutputs.
Pushandholdanyoperatingfrequencybuttontopre-settheswitch-oversamplerateintheeventof
an external reference failure.

Radio Systems, Inc. GEN-DDA/WC & DDA/WC-4x4 Manual
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Connections
Rearconnectivityisvia15pin“D” connectors for AES/EBU signals and BNCconnectorsforWord
Clockinputandoutputs.AXLR “break-out”panelis availabletoconnect AES/EBUinputsand
distributedoutputsviaXLR.
AC line voltage is auto detected and can operate from voltages from 96V to 264V AC.
Model GEN-DDA/WC
AES IN 1
1 IN x 4 OUT
AES IN 2
1 IN x 4 OUT
AES WORD CLOCK
Main In
100 240 V AC
IN OUT-1 OUT-2 OUT-3 OUT-4 OUT-5 OUT-6
DB-15Connections:
Pin 1 AESIn1+
Pin 2 N/C
Pin 3 AESOut1+
Pin 4 AESOut2+
Pin 5 AESOut3+
Pin 6 AESOut4+
Pin 7 N/C
Pin 8 Ground
Pin 9 AES In 1 -
Pin10 N/C
Pin11 AES Out 1-
Pin12 AES Out 2-
Pin13 AES Out 3-
Pin14 AES Out 4-
Pin15 Ground

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Model DDA/WC-4x4
AES IN 1
1 IN x 4 OUT AES IN 2 1 IN x 4 OUT AES IN 3 1 IN x 4 OUT AES IN 4 1 IN x 4 OUT
AES WORD CLOCK Main In
100 240 V AC
IN OUT-1 OUT-2 OUT-3 OUT-4 OUT-5 OUT-6
DB-15Connections:
Pin 1 AESIn1+
Pin 2 N/C
Pin 3 AESOut1+
Pin 4 AESOut2+
Pin 5 AESOut3+
Pin 6 AESOut4+
Pin 7 N/C
Pin 8 Ground
Pin 9 AES In 1 -
Pin10 N/C
Pin11 AES Out 1-
Pin12 AES Out 2-
Pin13 AES Out 3-
Pin14 AES Out 4-
Pin15 Ground

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SignalFlowDiagram
GEN-DDA/WC

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SignalFlowDiagram
DDA/WC-4x4

Radio Systems, Inc. GEN-DDA/WC & DDA/WC-4x4 Manual
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Specifications:GEN-DDA/WC
Inputs: AES/EBU
NumberofInputs 2
Connectors 15 pin ‘D’
Impedance 110ohmtypical
Sensitivity Min. 0.2 Vpp
Sample Rates 30KHzto200 KHzper theAES3-1992 specification
Inputs: Word Clock
NumberofInputs 1 external plus one of four selected from AES/EBU inputs
Impedance Hi-Z or 75 ohm (jumper selectable)
Sensitivity 1 Vpp
Outputs: AES/EBU
NumberofOutputs 8 (4 for each input)
Impedance 110ohmtypical
OutputLevel 5 Vpp, 110 ohm load
Sample Rates 30KHzto200 KHzper theAES3-1992 specification
Outputs: Word Clock
NumberofOutputs 6
Impedance 75 ohm, TTL Level
Power Supply
InputVoltage 90 - 264 VAC
Frequency 47 - 440 Hz
CurrentConsumption 0.5 Amps
Connector IEC
Physical
Weight 6 lbs (2.7 kgs)
Dimensions 19” W x 1.75” H x 14” D
48.26 cm W x 4.445 cm H x 35.56 cm D

Radio Systems, Inc. GEN-DDA/WC & DDA/WC-4x4 Manual
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Specifications:DDA/WC-4x4
Inputs: AES/EBU
NumberofInputs 4
Connectors 15 pin ‘D’
Impedance 110ohmtypical
Sensitivity Min. 0.2 Vpp
Sample Rates 30KHzto200 KHzper theAES3-1992 specification
Inputs: Word Clock
NumberofInputs 1 external plus one of four selected from AES/EBU inputs
Impedance Hi-Z or 75 ohm (jumper selectable)
Sensitivity 1 Vpp
Outputs: AES/EBU
NumberofOutputs 16 (4 for each input)
Impedance 110ohmtypical
OutputLevel 5 Vpp, 110 ohm load
Sample Rates 30KHzto200 KHzper theAES3-1992 specification
Outputs: Word Clock
NumberofOutputs 4
Impedance 75 ohm, TTL Level
Power Supply
InputVoltage 90 - 264 VAC
Frequency 47 - 440 Hz
CurrentConsumption 0.5 Amps
Connector IEC
Physical
Weight 6 lbs (2.7 kgs)
Dimensions 19” W x 1.75” H x 14” D
48.26cm W x 4.445 cm H x 35.56 cm D

Radio Systems, Inc. GEN-DDA/WC & DDA/WC-4x4 Manual
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Warranty
Radio Systems warrants this equipment to be free from defects in materials and workmanship for a
period of one (1) year.
This warranty extends to first users of the product and future owners who purchase the product
withinthe warrantyperiod.
The terms of this warranty are null and void if this product is stored or operated in an environment
notconducivetoelectronicequipment,orshowssignsofmisuseormodificationswhichaffectthe
proper functioning of the product. This warranty does not apply to damage caused by fire, smoke,
flood,lightning,oractsof nature and physicalabuse.
Radio Systems, and its associated companies, authorized distributors, and personnel are not liable
for loss of revenues or other damages or effects to the broadcast signal quality or coverage which
mayresultfromtheimproperfunctioning ofthisproduct.
Repair Policy
Technical assistance is available at any time, at nor charge, by phone or correspondence.
During the warranty period, there will be no charge for parts or service made to units which show no
sign of misuse by customer or lightning caused damage. The customer is responsible for the cost of
shipping their unit back to Radio Systems for repair.
During the warranty period, shipment of small parts and assemblies may also be made at a charge
to the user. Emergency shipments of replacement parts and circuits will be made at the user’s
request for an extra shipping and service charge. Chargeable services will be made COD or on Net-
30 day terms to users with established accounts.
During the warranty period, full credit or return of COD charges (less any service and expedited
shipping charges) will be made to users who return the defective parts or circuits within 30 days, if
the damage is covered under the terms of the warranty.
Return Instructions
ContactRadioSystemsat 856-467-8000forareturn authorization number.
Pack all items carefully and ship pre-paid, via UPS insured, to:
RadioSystems
601HeronDrive
LoganTownship,NJ08085
Attn: R.A.#_____________
Encloseanotewhichincludesyourname,company,phonenumber,theserialnumber,return
address (no box numbers), and a complete description of the problem.

For Assy:
Part#DDA-4x4
2/09
601 Heron Drive
Logan Township, NJ 08085
Phone: [phone] Fax: [phone]
http://www.radiosystems.com