Comtech EF Data SNM-1001L Installation And Operation Manual page 10

SNM-1001L Satellite Modem
Preface
7.1 Introduction................................................................................................................................. 7-1
7.2 Coding .......................................................................................................................................... 7-2
7.3 Turbo Product Codec (Hardware Option) ............................................................................... 7-2
7.3.1 Introduction........................................................................................................................... 7-2
7.3.2 Mod/Demod Processing Delay ............................................................................................. 7-3
7.3.3 Comparison of all TPC Modes.............................................................................................. 7-4
7.4 Uncoded Operation (No FEC) ................................................................................................... 7-5
SYSTEM CHECKOUT.....................................................................................8-1
CHAPTER 8.
8.1 System Checkout......................................................................................................................... 8-1
8.1.1 Interface Checkout ................................................................................................................ 8-2
8.1.2 Modulator Checkout ............................................................................................................. 8-3
Demodulator Checkout ........................................................................................................... 8-5
8.1.3
FAULT ISOLATION ........................................................................................9-1
CHAPTER 9.
9.1 Fault Isolation.............................................................................................................................. 9-1
9.1.1 System Faults/Alarms ........................................................................................................... 9-2
9.1.2 Faults/Alarms Display........................................................................................................... 9-2
9.1.3 Faults/Alarms Analysis ......................................................................................................... 9-2
AUTOMATIC UPLINK POWER CONTROL.................................................10-1
CHAPTER 10.
10.1 AUPC ......................................................................................................................................... 10-1
10.2 Modes of AUPC Location......................................................................................................... 10-3
10.2.1 AUPC - Between Two Modems......................................................................................... 10-4
10.2.2 Self-Monitoring Local Modem AUPC Control .................................................................. 10-5
10.2.3 MUX Operation .................................................................................................................. 10-6
10.2.4 DEMUX Operation ............................................................................................................. 10-6
10.2.5 Buffer Operation ................................................................................................................. 10-6
10.2.6 Loop Timing Operation ...................................................................................................... 10-7
10.2.7 Baseband Loopback Operation ........................................................................................... 10-7
10.2.8 Front Panel Operation ......................................................................................................... 10-7
ASYMMETRICAL LOOP TIMING .................................................................11-1
CHAPTER 11.
11.1 Asymmetrical Loop Timing ..................................................................................................... 11-1
FULLY ACCESIBLE SYSTEM TOPOLOGY (FAST)...................................12-1
CHAPTER 12.
12.1 FAST System Theory................................................................................................................ 12-1
12.1.1 Implementation ................................................................................................................... 12-1
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MN/SNM1001L.IOM