Comtech EF Data DMD2401/DMD2401L - Manual (Page 126)

DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces
TM065 - Rev. 3.3 4-87
Opcode: <2A08h> Command a Demodulator’s Convolutional Decoder
<1> Convolutional
Decoder 0 = None
1 = Viterbi 1/2 Rate
3 = Viterbi 3/4 Rate
5 = Viterbi 7/8 Rate
7 = Sequential 1/2 Rate
9 = Sequential 3/4 Rate
11 = Sequential 7/8 Rate
14 = Trellis 2/3
20 = TPC 0.7932D
21 = TPC 0.4953D
Opcode: <2A09h>
Command a Demodulator’s Differential Decoder
<1> Differential
Decoder 0 = Off, 1 = On
Opcode: <2A0Ah>
Command a Demodulator’s Reed-Solomon
<1>
<1>
<1>
<1>
<1>
Reed-Solomon
Reed-Solomon N
Reed-Solomon K
Reed-Solomon T
RS Interleaver
Depth 0 = Disable, 1 = Enable
Unsigned Binary
Unsigned Binary
Note: Always set to Zero; as the T value is calculated
from N and K.
Unsigned Binary, 4 or 8
Opcode: <2A0Dh>
Command a Demodulator’s Descrambler Control
<1> Descrambler
Control 0 = Disable, 1 = Enable
Opcode: <2A0Eh>
Command a Demodulator’s Descrambler Type
<1> Descrambler
Type 0 = None
1 = IBS Scrm.
2 = V35_IESS
3 = V35_CCITT
4 = V35_EFDATA
7 = Reed-Solomon Scrm.
8 = V35_EFRS
Opcode: <2A0Fh>
Command a Demodulator’s Spectrum
<1> Spectrum 0 = Normal, 1 = Inverted
Opcode: <2A11h>
Command a Demodulator’s Buffer Clock
<1> Buffer Clock 0 = External, 1 = Internal, 2 = EXC, 3 = RX SAT
Opcode: <2A12h>
Command a Demodulator’s Buffer Clock Polarity
<1> Buffer Clock
Polarity 0 = Normal, 1 = Inverted
Opcode: <2A13h>
Command a Demodulator’s Insert Mode
<1> Insert Mode 0 = Disable
1 = T1-D4