SDM-300L3 Satellite Modem
Revision 1
Preface
MN/SDM300L3.IOM
vi
6.7
Frame/Multiframe Length.......................................................................................... 6–17
6.7.1 Multiples
of
the Frame Length.............................................................................................6–17
6.7.2 Total
Buffer Length ..............................................................................................................6–17
6.7.3 Converting
Between Bits and Seconds ...............................................................................6–17
CHAPTER 7.
FEC AND TURBO .......................................................................................... 7–1
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
CHAPTER 8.
SYSTEM CHECKOUT .................................................................................... 8–1
8.1
System Checkout ........................................................................................................ 8–1
8.1.1 Interface Checkout ................................................................................................................8–2
8.1.2 Modulator Checkout ..............................................................................................................8–3
8.1.3 Demodulator Checkout..........................................................................................................8–5
CHAPTER 9.
FAULT ISOLATION........................................................................................ 9–1
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
CHAPTER 10.
OPEN NETWORK OPERATIONS............................................................. 10–1
10.1
Introduction................................................................................................................ 10–1
10.2
IBS............................................................................................................................... 10–1
10.3
IDR .............................................................................................................................. 10–5
10.4
Drop & Insert (D&I) .................................................................................................... 10–9
10.4.1 Description
of D&I Operation.............................................................................................10–11
10.4.2 D&I
Framing Formats ........................................................................................................10–14
10.4.3 D&I
Modem Defaults .........................................................................................................10–17
10.5
2xADPCM Voice in 64 kbps IBS ............................................................................. 10–18
