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CDM-Qx Satellite Modem Revision 5
Preface MN/CDMQx.IOM
v
5.6 TOP LEVEL SELECTION ......................................................................................................5–8
5.6.1 CONFIG..............................................................................................................................5–9
5.6.2 MONITOR ........................................................................................................................5–49
5.6.3 TEST:................................................................................................................................5–56
5.6.4 INFO (Information)...........................................................................................................5–61
5.6.5 SAVE/LOAD ....................................................................................................................5–65
5.6.6 UTILITY...........................................................................................................................5–68
CHAPTER 6. FORWARD ERROR CORRECTION OPTIONS ................................ 6–1
6.1 Introduction................................................................................................................................6–1
6.2 Viterbi .........................................................................................................................................6–2
6.3 Reed-Solomon Outer Codec......................................................................................................6–3
6.4 Trellis Coding.............................................................................................................................6–5
6.5 Turbo Product Codec (Hardware Option) ..............................................................................6–6
6.5.1 Introduction.........................................................................................................................6–6
6.5.2 The Evolution of TPC in Comtech Products.......................................................................6–6
6.5.3 End-to-End Processing Delay .............................................................................................6–7
6.5.4 Comparison of all TPC Modes............................................................................................6–8
CHAPTER 7. EDMAC CHANNEL............................................................................ 7–1
7.1 Theory Of Operation .................................................................................................................7–1
7.2 M&C Connection.......................................................................................................................7–2
7.3 Setup Summary..........................................................................................................................7–3
CHAPTER 8. AUTOMATIC UPLINK POWER CONTROL ...................................... 8–1
8.1 Introduction................................................................................................................................8–1
8.2 Setting AUPC Parameters.........................................................................................................8–2
8.2.1 Target Eb/No.......................................................................................................................8–2
8.2.2 Max Range ..........................................................................................................................8–2
8.2.3 Alarm...................................................................................................................................8–3
8.2.4 Demod Unlock ....................................................................................................................8–3
8.3 Compensation Rate....................................................................................................................8–3
8.4 Monitoring..................................................................................................................................8–4