Appendix A
DM240-DVB High-Speed Digital Modulator
A-20
TM083 – Rev. 3.0
Opcode: <2602h>
Command a Modulator's Frequency
<4>
Frequency
Binary Value, units Hz in 100Hz steps.
50000000Hz to 180000000Hz 70/140
950000000Hz to 2050000000Hz L-Band (This command will
cause the carrier to turn off).
Opcode: <2604h>
Command a Modulator's Data Rate
<4>
Data Rate
Binary Value, 1 BPS steps (This command will cause the
carrier to turn off).
Opcode: <2606h>
Command a Modulator's Modulation Type
<1>
Modulation Type 0 = QPSK, 1 = BPSK, 2 = 8PSK, 3 = 16QAM
Opcode: <2607h>
Command a Modulator's Inner FEC Rate
<1>
Inner FEC Rate
1 = 1/2 Rate, 2 = 2/3 Rate, 3 = 3/4 Rate, 4 = 5/6 Rate, 5 = 7/8
Rate, 6 = 6/7 Rate, 7=4/5, 8 = 8/9 Rate, 9 = 9/10 Rate, 128 =
1/4 Rate, 129 = 1/3 Rate, 130 = 2/5 Rate, 131 = 3/5 Rate
(This command will cause the carrier to turn off.)
Opcode: <2609h>
Command a Modulator's Carrier Control
<1>
Carrier Control
0 = Off, 1 = On
Opcode: <260Ah>
Command a Modulator's Carrier Type
<1>
Carrier Type
0 = Normal, 1 = CW, 2 = Dual, 3 = Offset, 4 = Pos FIR, 5 =
Neg FIR
Opcode: <260Bh>
Command a Modulator's Input Clock Source
<1> Input
Clock
Source
0 = SCTE, 1 = SCT
Opcode: <260Ch>
Command a Modulator's Input Clock Polarity
<1> Input
Clock
Polarity
0 = Normal, 1 = Inverted
Opcode: <260Fh>
Command a Modulator's Output Level
<2> Transmit
Power
Level
Signed Value. 0 to –250 (0.0 to –25.0 dBm)
Opcode: <2611h>
Command a Modulator's Spectrum
<1>
Spectrum
0 = Inverted, 1 = Normal
Opcode: <2616h>
Command a Modulator's External Reference Source
<1> External
Reference Source
0 = Internal, 1 = External
Содержание DM240-DVB
Страница 3: ......
Страница 13: ...Introduction DM240 DVB High Speed Digital Modulator 1 2 TM083 Rev 3 0...
Страница 17: ...Installation DM240 DVB High Speed Digital Modulator 2 4 TM083 Rev 3 0...
Страница 23: ...User Interfaces DM240 DVB High Speed Digital Modulator 4 4 TM083 Rev 3 0 Figure 4 2 DM240 Main Programming Menu...
Страница 49: ...User Interfaces DM240 DVB High Speed Digital Modulator 4 30 TM083 Rev 3 0 Figure 4 12 RF Switch Control Menu...
Страница 63: ...Maintenance and Troubleshooting DM240 DVB High Speed Digital Modulator 6 2 TM083 Rev 3 0...
Страница 67: ...Technical Specifications DM240 DVB High Speed Digital Modulator 7 4 TM083 Rev 3 0...
Страница 106: ...Appendix B DM240 DVB High Speed Digital Modulator B 16 TM083 Rev 3 0...