Comtech EF Data CDM-750 Installation And Operation Manual page 204

CDM-750 Advanced High-Speed Trunking Modem
Appendix D
Command
Parameter Number of
(Instruction
Type Arguments
& Qualifier)
TX LO TLO= 6 bytes
Frequency
Tx Location of
TLP= 1 byte
the Pilot
Tx Pilot
TPI= 1 byte
Tx Power Level TPL= 4 bytes
Tx Spectrum TSI= 1 byte, 0 or 1
Invert
Description of Arguments
Command or Query.
Tx LO frequency information in the form xxxxxs, where:
xxxxx is the LO frequency – 3000 through 65000 MHz or 00000 (OFF)
s is the sign for the MIX (+ or –)
Terminal Frequency=LO ± TFQ (see below)
Example: TLO=12000+ (BUC LO is 12GHz, low-side mix)
Command or Query.
Tx Pilot location selection in the form x, where:
0=Average
1=Peak
Example: TLP=0 (Pilot Average)
Command or Query.
Tx Pilot selection in the form x, where:
0=Off
1=On
Example: TPI=0 (Pilot Off)
Note: It is recommended that pilots be used when running any 16APSK or 32APSK
MODCOD. In addition, pilots are also recommended when the symbol rate is below
5000 Ksps.
Command or Query.
Tx Output power level in the form sxx.x, where:
s=sign (+ or –)
xx.x=power level (in 0.1 dBm steps)
L-Band: 0 to -40 dBm
70/140 MHz: 0 to -25 dBm
Example: TPL=-13.4
Command or Query.
Tx Spectrum Invert selection in the form x, where:
0=Normal
1=Tx Spectrum Inverted
Example:TSI=0 (normal)
D–8
Query
Response to
(Instruction & Response to Query
Command
Qualifier)
TLO= TLO? TLO=xxxxxs
TLO? (see Description of
TLO* Arguments)
TLO#
TLP=
TLP? TLP=x
TLP?
TLP*
TLP#
TPI=
TPI? TPI=x
TPI?
TPI*
TPI#
TPL= TPL? TPL=sxx.x
TPL? (see Description of
Arguments)
TPL*
TPL#
TSI= TSI? TSI=x
TSI? (see Description of
Arguments)
TSI*
TSI#
Revision 1
MN-CDM750