Comtech EF Data CDM-760 - Tx Parameters

Serial Interface Operation Revision 3
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760
8–11
8.5.2 Tx Parameters
Parameter Type
Controller-to-Target
Instruction Code and
Qualifier
Arguments for
Command or
Query
Description of Arguments
(Note that all arguments are ASCII numeric codes from 48 to 57)
Target-to-Controller
(see Description of Arguments)
Command Query
Response to
Command
Response to
Query
Tx Frequency
TFQ =
TFQ?
9 bytes
Command or Query.
Sets or returns Tx Frequency in MHz, in 100Hz steps, in the form xxxx.xxxx where:
xxxx.xxxx=50 MHz to 180 MHz (70/140 MHz), or 950 MHz to 2150 MHz (L-Band)
EXAMPLE: <0/TFQ=0950.9872
TFQ=
TFQ?
TFQ*
TFQ#
TFQ=xxxx.xxxx
Tx Framing Mode
TFM =
TFM?
1 byte, 0 or 1
Command or Query.
Sets or returns Tx Framing mode in the form x, where:
0=Normal Block
1=Short Block
NOTE: Not all Network Specs will support both Framing Modes.
EXAMPLE: <0/TFM=1 (selects Short Block mode)
TFM=
TFM?
TFM*
TFM#
TFM=x
Tx ModCod
TMC =
TMC?
2 bytes, value of
00 to 52
Command or Query.
FOR NET=0: Sets or returns Tx Modulation in the form xx, where:
TMC=
TMC?
TMC*
TMC#
TMC=xx
00=ACM
01=reserved (QPSK 1/4)
02=reserved (QPSK 1/3)
03=reserved (QPSK 2/5)
04=QPSK 1/2
05=QPSK 3/5
06=QPSK 2/3
07=QPSK 3/4
08=QPSK 4/5
09=QPSK 5/6
10=QPSK 8/9
11=QPSK 9/10
12=8PSK 3/5
13=8PSK 2/3
14=8PSK 3/4
15=8PSK 5/6
16=8PSK 8/9
17=8PSK 9/10
18=16-APSK 2/3
19=16-APSK 3/4
20=16-APSK 4/5
21=16-APSK 5/6
22=16-APSK 8/9
23=16-APSK 9/10
24=32-APSK 3/4
25=32-APSK 4/5
26=32-APSK 5/6
27=32-APSK 8/9
28=32-APSK 9/10
FOR NET=1: Sets or returns Tx Modulation in the form xx, where:
00=ACM
01=reserved (QPSK 1/4)
02=reserved (QPSK 53/180)
03=reserved (QPSK 1/3)
04=reserved (QPSK 11/30)
05=reserved (QPSK 2/5)
06=reserved (QPSK 77/180)
07=reserved (QPSK 83/180)
08=QPSK 1/2
09=QPSK 8/15
10=QPSK 17/30
11=QPSK 3/5
12=QPSK 19/30
13=QPSK 2/3
14=QPSK 127/180
15=QPSK ¾
16=QPSK 4/5
17=QPSK 5/6
18=QPSK 31/36
19=QPSK 8/9
20=QPSK 9/10
21=8PSK 17/30
22=8PSK 3/5
23=8PSK 19/30
24=8PSK 2/3
25=8PSK 127/180
26=8PSK 3/4
27=8PSK 4/5
28=8PSK 5/6
29=8PSK 31/36
30=8PSK 8/9
31=8PSK 9/10
32=16-ASK 19/30
33=16-APSK 2/3
34=16-APSK 128/180
35=16-APSK 3/4
36=16-APSK 4/5
37=16-APSK 5/6
38=16-APSK 31/36
39=16-APSK 8/9
40=16-APSK 9/10
41=32-APSK 127/180
42=32-APSK 3/4
43=32-APSK 4/5
44=32-APSK 5/6
45=32-APSK 31/36
46=32-APSK 8/9
47=32-APSK 9/10