Tx Parameters - Comtech EF Data CDM-750 Installation And Operation Manual

CDM-750 Advanced High-Speed Trunking Modem
Serial-based Remote Product Management
7.5.2

Tx Parameters

Command
Parameter Number of
(Instruction
Type Arguments
& Qualifier)
Tx Frequency TFQ= 9 bytes
Tx Framing TFM= 1 byte, 0 or 1
Mode
Tx MODCOD TMC= 2 bytes, value
of 1 to 36
Description of Arguments
Command or Query.
Set or return Tx Frequency in MHz, Resolution=100Hz, in the form xxxx.xxxx where the range is:
50 MHz to 180 MHz, and
950 MHz to 1950 MHz (L-Band – FAST option)
NOTE: The CDM-750 supports 70,140 MHz bands and L-Band.
Example: TFQ=0950.9872
Command or Query.
Set or return Tx Framing mode in the form x, where:
0 = DVB-S2 Normal
1 = DVB-S2 Short Block
Example: TFM=1 (selects DVB-S2 Short Block mode)
Command or Query.
Set or return Tx Modulation, in the form xx, where:
0 = reserved 14 = 8PSK 3/4
1 = reserved (QPSK ¼) 15 = 8PSK 5/6
2 = reserved (QPSK 1/3) 16 = 8PSK 8/9
3 = reserved (QPSK 2/5) 17 = 8PSK 9/10 *
4 = QPSK 1/2 18 = 16-APSK 2/3
5 = QPSK 3/5 19 = 16-APSK 3/4
6 = QPSK 2/3 20 = 16-APSK 4/5
7 = QPSK ¾ 21 = 16-APSK 5/6
8 = QPSK 4/5 22 = 16-APSK 8/9
9 = QPSK 5/6 23 = 16-APSK 9/10 *
10 = QPSK 8/9 24 = 32-APSK ¾
11 = QPSK 9/10 * 25 = 32-APSK 4/5
12 = 8PSK 3/5 26 = 32-APSK 5/6
13 = 8PSK 2/3 27 = 32-APSK 8/9
All other codes are invalid.
Example: TMC = 4
28 = 32-APSK 9/10 *
29 = reserved
30 = reserved
31 = reserved
32 = auto
33 = reserved (DVB-S QPSK ½)
34 = reserved (DVB-S QPSK 2/3)
35 = reserved (DVB-S QPSK ¾)
36 = reserved (DVB-S QPSK 5/6)
37 = reserved (DVB-S QPSK 7/8)
7–10
Revision 2
MN-CDM750
Query
Response to
(Instruction & Response to Query
Command
Qualifier)
TFQ= TFQ? TFQ=xxxx.xxxx
TFQ?
TFQ*
TFQ#
TFM= TFM? TFM=x
TFM?
TFM* (see Description of
TFM# Arguments)
TMC= TMC? TMC=xx
TMC? (see Description of
TMC* Arguments)
TMC#