Comtech EF Data CDM-760 Installation And Operation Manual page 256

Serial Interface Operation
CDM-760 Advanced High-Speed Trunking Modem
Controller-to-Target
Instruction Code and
Qualifier
Parameter Type
Command Query
Tx Alpha Rolloff TAR= TAR?
Tx Gold Code TGS= TGS?
Sequence Index
Tx Pilot TPI= TPI?
Tx Power Level TPL= TPL?
Tx Carrier State TXO= TXO?
Arguments for
Description of Arguments
Command or
(Note that all arguments are ASCII numeric codes from 48 to 57)
Query
1 byte, value of 0 Command or Query.
thru 5 Sets or returns Tx Alpha Rolloff in the form x, where:
0=20%
1=25%
2=35%
3=5% (only available when NET>0)
4=10% (only available when NET>0)
5=15% (only available when NET>0)
EXAMPLE: <0/TAR=0 (selects a Tx Alpha Rolloff of 20%)
6 bytes Command or Query.
Sets or returns Tx Gold Code Sequence Index in the form xxxxxx, where:
Gold Code Sequence Index=000000 to 262141
EXAMPLE: <0/TGS=189063
1 byte, value of 0 Command or Query.
or 1 Sets or returns Tx Pilot in the form x, where:
0=Off
1=On
NOTES:
1) CEFD recommends that you use Pilots when running any 16-APSK, 32-APSK, or 64-APSK ModCod.
2) Pilots are recommended when the symbol rate is below 5000 ksps.
EXAMPLE: <0/TPI=0 (selects Pilot Off)
5 bytes Command or Query.
Sets or returns Tx Output power level (dBm), in 0.1 dB steps, in the form sxx.x, where:
s=sign (+ or -)
xx.x=power level (dBm) from 0 to -25 dBm (70/140 MHz) or 0 to -40 dBm (L-Band)
EXAMPLE: <0/TPL=-13.4
1 byte, value of 0 Command or Query.
or 1 Sets or returns Tx Carrier State in the form x, where:
0=OFF due to front panel or remote control command
1=ON
EXAMPLE: <0/TXO=1 (Tx Carrier ON)
8–13
Revision 3
MN-CDM760
Target-to-Controller
(see Description of Arguments)
Response to Response to
Command Query
TAR= TAR=x
TAR?
TAR*
TAR#
TGS= TGS=xxxxxx
TGS?
TGS*
TGS#
TPI= TPI=x
TPI?
TPI*
TPI#
TPL= TPL=sxx.x
TPL?
TPL*
TPL#
TXO= TXO=x
TXO?
TXO*
TXO#