Comtech EF Data CDM-760 Installation And Operation Manual page 255

Serial Interface Operation
CDM-760 Advanced High-Speed Trunking Modem
Controller-to-Target
Instruction Code and
Qualifier
Parameter Type
Command Query
Tx ModCod
(cont.)
Tx Symbol Rate TSR= TSR?
Tx Data Rate TDR= TDR?
Tx Spectrum Invert TSI= TSI?
Arguments for
Description of Arguments
Command or
(Note that all arguments are ASCII numeric codes from 48 to 57)
Query
For NET=2: 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 3/4
16=QPSK 4/5
17=QPSK 5/6
10 bytes, numeric Command or Query.
Sets or returns Tx Symbol Rate, in ksps, in the form dddddd.ddd where the range is:
QPSK – From .1 to 150000 ksps
8PSK – From .1 to 120000 ksps
16-APSK – From .1 to 90000 ksps
32-APSK – From .1 to 72000 ksps
64-APSK – From .1 to 54000 ksps
NOTE: If the Symbol Rate is set, then the Data Rate will be automatically calculated and updated.
EXAMPLE: <0/TSR=150000.000 (150 Msps)
10 bytes, numeric Command or Query.
Sets or returns Tx Data rate in kbps, in 1 bps steps, in the form xxxxxx.xxx.
NOTE: If the Data Rate is set, then the Symbol Rate will be automatically calculated and updated. The symbol rate will
be limit checked to assure valid ranges.
EXAMPLE: <0/TDR=002047.999 (2047.999 kbps)
1 byte, value of 0 Command or Query.
or 1 Sets or returns Tx Spectrum Invert in the form x, where:
0=Normal
1=Tx Spectrum Inverted
EXAMPLE: <0/TSI=0 (selects Normal)
18=QPSK 31/36 36=16-APSK 4/5
19=QPSK 8/9 37=16-APSK 5/6
20=QPSK 9/10 38=16-APSK 31/36
21=8PSK 17/30 39=16-APSK 8/9
22=8PSK 3/5 40=16-APSK 9/10
23=8PSK 19/30 41=32-APSK 127/180
24=8PSK 2/3 42=32-APSK 3/4
25=8PSK 127/180 43=32-APSK 4/5
26=8PSK 3/4 44=32-APSK 5/6
27=8PSK 4/5 45=32-APSK 31/36
28=8PSK 5/6 46=32-APSK 8/9
29=8PSK 31/36 47=32-APSK 9/10
30=8PSK 8/9 48=64-APSK 4/5
31=8PSK 9/10 49=64-APSK 5/6
32=16-ASK 19/30 50=64-APSK 31/36
33=16-APSK 2/3 51=64-APSK 8/9
34=16-APSK 128/180 52=64-APSK 9/10
35=16-APSK 3/4
8–12
Revision 3
MN-CDM760
Target-to-Controller
(see Description of Arguments)
Response to Response to
Command Query
TSR? TSR=xxxxxx.xx
TSR= x
TSR*
TSR#
TDR= TSI=x
TDR?
TDR*
TDR#
TSI= TDR=xxxxxx.xx
TSI? x
TSI*
TSI#