Comtech EF Data QAM256 User Manual
Page 73
Remote Operations
QAM256 Digital Video Modulator and Upconverter
C-18
TM077 – Rev. 4.0
<4>
Symbol rate
(Binary value, 1sps steps)
(This command will cause the carrier to turn off)
Opcode: <2244h>
Command a modulator's modulation.
<1>
Modulation
(0=4 QAM, 1=16 QAM, 2=32 QAM, 3=64 QAM, 4=128 QAM,
5=256 QAM)
Opcode: <2245h>
Command a modulator's spectrum.
<1> Spectrum
(0=Normal,
1=Inverted)
Opcode: <2246h>
Command a modulator's framing.
<1>
Framing
(0=MPEG 187, 1=MPEG 188, 2=MPEG 204, 3=Data)
Opcode: <2247h>
Command a modulator's Interleaver and Encoder.
<1> Interleaver/Encoder (For
Annex-A)
(0 = 1,204, 1 = 2,102, 2 = 3,68, 3 = 4,51, 4 = 6,34, 5 = 12,17, 6 =
17,12, 7 = 34,6, 8 = 51,4, 9 = 68,3, 10 = 102,2, 11 = 204,1)
(For Annex-B)
(12 = 128,1, 13 = 128,2, 14 = 64,2, 15 = 128,3, 16 = 32,4, 17 =
128,4, 18 = 16,8, 19 = 128,5, 20 = 8,16, 21 = 128,6, 22 = 4,32,
23 = 128,7, 24 = 2,64, 25 = 128,8, 26 = 1,128)
Opcode: <2249h>
Command a modulator's roll off.
<1>
Roll off
(0=0.12, 1=0.15, 2=0.18)
Opcode: <224Ah>
Command a modulator's interface type
<1>
Interface Type
(0 = STS1, 1 = G.703-E3, 2 = G.703-T3, 3 = Normal ASI, 4 =
Advanced ASI, 5 = DVB Parallel, 6 = M2P Parallel, 7 = ECL, 8 =
HSSI)
Opcode: <224Bh>
Command a modulator's data polarity
<1>
Data Polarity
(0=Normal, 1=Inverted)
Opcode: <224Ch>
Command a modulator's clock polarity
<1>
Clock Polarity
(0=Normal, 1=Inverted)
Opcode: <224Dh>
Clear a modulator's Alarms.
<0>
Clear Alarms
(no parameters
Opcode: <224Eh>
Mask a modulators Alarms.
<1>
Major Alarm1
(Bit 0 = Mod Hardware)
(Bit 1 = Tx Synthesizer lock)
(Bit
2
=
Data
PLL
lock)
(Bit
3
=
Frame
lock)
(Bit
4
=
Mod1
lock)
(Bit
5
=
Mod2
lock)
(Bit
6
=
Mod3
lock)
(Bit
7
=
Spare)
(0 = mask, 1 = allow)
<1>
Major Alarm2
(Bit 0 = RF up synthesizer lock)
(Bit 1 = RF down synthesizer lock)
(Bit
2
=
RF
temperature
Detect)
(Bit 3 = RF CPLD (hardware))
(Bit
4
=
Spare)
(Bit
5
=
Spare)