System Specification of C & M System

  • Non-coherent FSK techniques are used for data transmission over OPTICAL FIBER links.
  • Data Baud Rate is 250 Kbits/sec.
  • Bit interleaved techniques are used for multiplexing Telemetry,Voice,Sync.,Dial and Aux.Channels.
  • Polynomial and checksum ERROR DETECTION with ARQ capability.
  • The Bit Error Probability is 10 ¯10 .

 

Bit rates available for various services

 

DATA (COMH - ANTCOM COMM)            ------------->  125 Kbits/sec

  • VOICE (TELEPHONY VOICE)        ------------->   62.5 Kbits/sec
  • DIAL (TELEPHONY SIGNALLING)    ------------->   15.625 Kbits/sec
  • SYNC (SYNCHRONISATION PATTERN) ------------->   15.625 Kbits/sec
  • AUX1 (AUXILIARY CHANNEL1)      ------------->   15.625 Kbits/sec

 

  • AUX2 (AUXILIARY CHANNEL2) ------------->   15.625 Kbits/sec
                                              --------------------
                                              TOTAL BIT RATE    250 Kbits/sec
                                              --------------------

 

Next, we'll go into the details of the C & M system

 

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