Telecast Adder 162, User Manual

Page 1: ...Adder 162 322 Audio Intercom Data Multiplexer User Manual Telecast Fiber Systems Inc 102 Grove Street Worcester MA 01605 Tel 508 754 4858 Fax 508 752 1520 www telecast fiber com...

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Page 3: ...ments 9 Battery Charging 9 Electrical Hookups 9 Audio Connections 9 Digital Connections 10 Optical Connections 11 Optical Fiber Signals 11 Cable Fabrication 11 Fiber Ports 11 Multiple Fiber Versions 1...

Page 4: ...tem Interconnections 24 Powering Up 25 Intercom Modules 25 Intercom Connections 27 4 wire Auxiliary balanced 27 Clear Com 28 RTS Telex 29 Intercom Module Replacement 30 Cable Harness 30 Intercom Setup...

Page 5: ...by internal DIP switches on the Main PC Board The coaxial output is always active On newer models the dip switches are gone and the units work on coax priority That is to say that the system looks fo...

Page 6: ...AI820 8 channel Input Module AO820 8 channel Output Module 4 wire Intercom Clear Com 2 wire Intercom RTS Telex dual channel Intercom Multi mode WDM Wavelength Division Multiplexer Single mode WDM Unp...

Page 7: ...re that AC outlets are within reach of their 6 foot power cords If your Adder is equipped with intercoms that require power RTS or Clear Com you will need two such power supplies per frame Line Power...

Page 8: ...8 Figure 3 Adder 322 and 162 rear panels...

Page 9: ...rovided at the INPUT POWER connector shown in Figure 2 on page 3 Full charge takes 16 hours and will power Model 162 for 30 minutes and Model 322 for 15 minutes Electrical Hookups Audio Connections Au...

Page 10: ...e balanced inputs may be needed if input cable lengths are in excess of 6 feet Serial communications can be RS 232 at one end and RS 422 at the other if desired Contact closure input is activated by p...

Page 11: ...le with industry standard ST type connectors It may be used with installed backbone cables or with dedicated cables Consult Telecast for information regarding compatible fiber types Cable Fabrication...

Page 12: ...second unit to complete the optical circuit A redundant circuit from Rx2 on the first unit and Rx1 on the second unit can be added using a second fiber The Tx1 and Tx2 ports are combined with the Rx1...

Page 13: ...e Main PC Board refer to Figure 8a on page 10 Signal Power Figure 7 Input upper and Output lower Modules for Adder Model 162 322 Module mounting slots are numbered from the upper part of the chassis t...

Page 14: ...14 Figure 8 Model 162 Main PC Board Figure 9 Model 322 Auxiliary Power PC Board ALARMS ICOM GAINS DATA POWER More Module Power on 322 s...

Page 15: ...ks that must be squeezed to be removed 4 Change the module and plug the respective signal and power connectors back into their ports on the module Tighten the mounting screws WARNING Be sure to mainta...

Page 16: ...Figure 12 Coax Receive Switch Setting Coax Length Configure SW2 according to the length of coaxial cable being used Refer to Figure 13 Figure 13 Coax distance Settings The maximum length of coaxial ca...

Page 17: ...The LOCAL POWER ALARM indicates a failure in the external power input at this unit To configure the alarm for local power configure SW6 according to Figure 14 Figure 14 Alarm Switch Local Remote Power...

Page 18: ...w maximum or 12 dBm or greater is present at the channel input The red LED indicates clipping indicating that the A D converter for the channel is at or near overload and input gain or level must be r...

Page 19: ...load of 60 mA per 32 channels which is about 2 mA per input channel with all channels in use Source impedance is 5000 Ohms When fewer than the 32 loads are used the current at each input can be incre...

Page 20: ...20 Table 7 Input Module Switch Settings...

Page 21: ...ncies 20 Hz 400 Hz 1 kHz and 20 kHz Figure 18 Signal Generator Monitor To use the signal generator Connect the output labeled GENERATOR by XLR cable to any of the audio input points on an input module...

Page 22: ...ection exists between the local and remote units the LED corresponding to the active input will be green If the coax input is in use neither INPUT STATUS LED will be green The system will automaticall...

Page 23: ...r an audible alarm when there is an error and the ALARM switch is in the ON position Link Status Always Active Local Power Defeatable by SW6 Remote Power Defeatable by SW6 2 wire intercom power If the...

Page 24: ...Connection Configuration 2 Operation with Fiber Redundancy Add a second fiber pair Refer to Figure 22 when wiring operations with fiber redundancy 162 322 1 162 322 2 Tx4 Tx3 Tx2 Tx1 Rx2 Rx1 Tx4 Tx3 T...

Page 25: ...irmly seat all connectors To operate the power switch 1 Pull the lever away from the panel 2 Move it up for power ON or down for power OFF 3 Switch ON the power to all Adder 162 322 units The power sw...

Page 26: ...m Telecast 1 Balanced 4 wire 2 Clear Com 2 wire 3 RTS Telex compatible 2 wire Intercom modules are located at the top of the assembly in the Model 162 and along the right side on Model 322 as shown in...

Page 27: ...ical split output is used to connect fiber to additional receiving locations the intercom signals will be present at the receiver but transmission back to the originating unit will not be possible Int...

Page 28: ...col and signal levels The Clear Com Intercom Connections are listed in Table 8 Table 8 Clear Com Intercom Connections PIN FUNCTION 1 Ground 2 VDC Power 3 Power Note When using the Clear Com external p...

Page 29: ...dules provide a two channel intercom on a single 3 pin XLR connector This Telecast module fully supports the RTS signaling protocol and signal levels RTS channel operation is optimized by the use of f...

Page 30: ...nd the module locations This cable connects the module to power and signal sources There is a AMP MTA type connector for each module on this harness the connector fits all module types Intercom Setup...

Page 31: ...m the bottom of the assembly to gain access to the Main PC Board see Removing and Replacing Modules on page 15 4 Check that the intercom switch settings are appropriate for the new module to be insert...

Page 32: ...e relatively insensitive to transmission level variations Data Connectors 1 and 2 The digital input buffer circuit accepts both data signals RS 232 RS 422 and contact closures and delivers this inform...

Page 33: ...Circuit Figure 33 Digital Data Output Circuit Audio Circuits Output The audio output circuit is shown in Figure 34 The output impedance between pin 2 and 3 is 30 Ohm balanced Output characteristics ar...

Page 34: ...short pin 2 or 3 to ground or severe distortion will result Audio Circuits Input The audio input circuit can be set to have a balanced impedance of 600 Ohm or 10 kOhm The audio input circuit can accep...

Page 35: ...er Demultiplexer Output Takes sequential digital signals from the pin diode and separates them up to 64 to the D A converters four to the RS 422 transmitters and two to the contact closure relays D A...

Page 36: ...Replace this battery pack approximately every two years or as required Replacement battery packs are available from Telecast Dispose of batteries in accordance with local regulations 1 Move the power...

Page 37: ...ed with the appropriate connectors generally ST style to connect the power meter to the transmitter output Set the meter to the same wavelength as the transmitter The meter should show a power level g...

Page 38: ...ic Distortion 8 dBm 20 20kHz 0 05 8 dBm 1kHz 0 01 Intermodulation Distortion SMPTE 8 dBm 60Hz 3kHz mixed 4 1 0 04 Signal to Noise ratio A weighted 20 20kHz re 18dBm 102db Throughput delay 1millisecond...

Page 39: ...90 db Frequency Response 8 dBm 80Hz 20kHz 1 3 dB Digital Characteristics Connector 4 9 pin Female D Telecast Pinout Data Channels 1 channel per connector 4 total Maximum Data Rate RS 442 150 000 bps...

Page 40: ...r system standard MM SM Minimum Transmit Power 10 dBm 10 dBm Minimum Receiver Power 28 dBm 28 dBm Available Loss Margin 18 dB 18 dB One fiber system WDM option MM LW1 option SM SW1 option Minimum Tran...

Page 41: ...e maintenance and care Nor shall this warranty apply to any damage caused in whole or in part by attempts by personnel other than Telecast s personnel as approved in advance in accordance with the for...