Comtech EF Data C5 - Manual (Page 14)

Table of Contents C5/K1/K3 Integrated Satellite Terminal System
x Rev. 0
5.4 Demodulator.............................................................................................................................................. 5-10
5.4.1 Demodulator Specifications ............................................................................................................... 5-11
5.4.2 Theory of Operation ........................................................................................................................... 5-11
5.5 Decoder ...................................................................................................................................................... 5-13
5.6 Terrestrial Interface Types ...................................................................................................................... 5-13
CHAPTER 6. SYSTEM CHECKOUT ..........................................................................6-1
6.1 Satellite Terminal System Checkout.......................................................................................................... 6-1
6.2 Interface Checkout...................................................................................................................................... 6-2
6.2.1 Modulator Checkout............................................................................................................................. 6-3
6.2.2 Demodulator Checkout......................................................................................................................... 6-6
6.2.3 ODU Checkout..................................................................................................................................... 6-6
6.3 Fault Isolation ............................................................................................................................................. 6-9
6.3.1 System Faults/Alarms........................................................................................................................... 6-9
6.3.2 Faults/Alarms Display ........................................................................................................................ 6-13
6.3.3 Faults/Alarms Analysis....................................................................................................................... 6-13
6.3.3.1 Transmitter Faults...................................................................................................................... 6-14
6.3.3.2 Receiver Faults .......................................................................................................................... 6-15
6.3.3.3 Transmit Interface Faults........................................................................................................... 6-16
6.3.3.4 Receive Interface Faults ............................................................................................................ 6-17
6.3.3.5 Common Equipment Faults ....................................................................................................... 6-19
6.3.3.6 ODU Faults................................................................................................................................ 6-19
APPENDIX A. OPTIONS........................................................................................... A–1
A.1 FAST Accessible Options ..................................................................................................................... A–1
A.1.1 FAST System Theory ......................................................................................................................... A–2
A.1.2 Implementation................................................................................................................................... A–2
A.1.2.1 Activation Procedure ................................................................................................................. A–3
A.2 Interface Options .................................................................................................................................. A–6
A.2.1 Asynchronous Interface/AUPC .......................................................................................................... A–6
A.2.1.1 Local AUPC .............................................................................................................................. A–8
A.2.1.1.1 Self-Monitoring Local Modem AUPC Control ..................................................................... A–9
A.2.1.2 Remote AUPC ......................................................................................................................... A–10
A.2.1.3 Theory of Operation ................................................................................................................ A–10
A.2.1.3.1 Terrestrial Data Interfaces................................................................................................... A–10
A.2.1.3.2 ASYNC Data Interfaces ...................................................................................................... A–10
A.2.1.3.3 Multiplexer Operation ......................................................................................................... A–11
A.2.1.3.4 Demultiplexer Operation..................................................................................................... A–11
A.2.1.3.5 Buffer Operation ................................................................................................................. A–11
A.2.1.3.6 Loop Timing Operation....................................................................................................... A–12
A.2.1.3.7 Baseband Loopback Operation ........................................................................................... A–12
A.2.1.3.8 Non-ASYNC Operation ...................................................................................................... A–13
A.2.1.3.9 ASYNC Channel EIA-485 Operation ................................................................................. A–13
A.2.1.3.10 Valid ASYNC Baud Rates ................................................................................................ A–13
A.2.1.4 Front Panel Operation.............................................................................................................. A–14