AMT-70/AMT-73/AMT-75 Installation and Operation
Data Rate
tdata
yyyyyy
rdata
yyyyyy
Get/Set output or input data rate in Hz
Modulation Type
tmod
BPSK, QPSK, 8PSK,
16QAM, OQPSKI,
OQPSKQ
rdem
BPSK, QPSK, 8PSK,
16QAM, OQPSKI
OQPSKQ
Get / Set the modulator type
FEC Code Type
tcode
INTELSAT
TPC4K, TPC16K,
(note: the codes OM73 and NONE
DVBS, DSNG,
DVBS2S, DVBS2N,
TPC4K, TPC16K, or
OM73, NONE
rcode
INTELSAT
DVBS, DSNG,
OM73, NONE
Get / Set FEC code type
Define the code type;
are supported only on the DISA
compliant military modem AMT73)
Code Rate
2/5, 3/5, 4/5, 8/9, 19/20,
or UNCODED
trate
1/2, 2/3, 3/4, 5/6, 7/8,
2/5, 3/5, 4/5, 8/9,
19/20, or UNCODED
rrate
1/2, 2/3,3/4, 5/6, 7/8,
Get / Set the FEC code rate;
The code rate 1/4, 1/3, 9/10 are also
supported in DVB-S2B mode.
Reed Solomon
Code Rate
trsrate
OFF, 210, 126
rrsrate
OFF, 210, or 126
Get / Set Reed Solomon code rate
Scrambler
tscram
ON or OFF
rdesc
ON or OFF
Get / Set the scrambler ON or OFF
Filter Alpha
talpha
0.25 – 0.35 (AMT70)
or
0.12 – 0.35 (AMT73L)
ralpha
0.25 or 0.35
Get / Set the Nyquist filter roll-off
Spectral Invert
ON/OFF
tspinv
O
N or OFF
rspinv
ON, OFF or AUTO
Get/Set modulator or demodulator spectral
inversion. If demodulator is set to AUTO, it
automatically senses incoming spectral
inversion and inverts if detected. Only inverts
the modulation eye pattern I and Q.
Input/Output
Sources
tinput
Get/Set interface sources
(Back panel Input / output ports or loopback)
EXTERNAL,
MPEG_VIA_ASI,
MPEG_VIA_EXT
or
INTERNAL_PRB
rinput
INPUT1,
INPUT2,
97
LOOPBACK
Differential
Encoder/Decoder
tdiff
O
N or OFF
rdiff
ON or OFF
Get/Set the differential encoder
and decoder to ON or OFF
10 MHz Oscillator
Reference
tfref
ON or OFF
rfref
ON or OFF
Get/Set the 10 MHz Reference
ON or OFF; Applies the 10 MHz reference to
the BUC and/or LNB.
Turbo Scrambler
mode
ttpcs
NORMAL or V35
rtpcs
NORMAL or V35
Set the compatible Turbo mode
on the modulator / demodulator.
Reset Modem
Software
Parameters
treset
rreset
Resets (activate) the modulator or
demodulator pending software parameters
Summary of Contents for AMT-70
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