Comtech EF Data CDM-625 - Manual (Page 478)

CDM-625 Advanced Satellite Modem Revision 15
Appendix D MN-CDM625
D–14
Parameter
Type
Command
(Instruction
& Qualifier)
Number of
Arguments
Description of Arguments
Response to
Command
Query
(Instruction &
Qualifier)
Response to
Query
Tx
Data Invert
TDI=
Exception –
600/L
Emulation:
ITD=
1 byte, 0 or 1 Command or Query.
Invert Transmit Data
0=Normal
1=Inverted
Example: TDI = 1 (selects TX Data Invert)
Exception – In 600/L Emulation Mode, instruction is ITD.
TDI=
TDI?
TDI*
TDI#
TDI?
Exception –
600/L Emulation:
ITD?
TDI=x
(see Description of
Arguments)
Tx
Reed-
Solomon
Encoding
TRS= 1 byte, value
of 0 thru 3
Command or Query.
Tx RS encoding
0=Normal (based on the Open Network framing selected)
1=IESS-310 mode, valid with QDI, unframed, IBS, D&I, IDR.
2=EF Data legacy standard (225,205) – unframed, QDI only
3=IBS (126,112) – unframed only
Example: TRS=0 (This is a ‘don’t care’ if no RS is selected under FEC Type)
Available all framing modes, except EDMAC.
TRS=
TRS?
TRS*
TRS#
TRS? TRS=x
(see Description of
Arguments)
Tx Spectrum
Invert
TSI= 1 byte, 0 or 1 Command or Query.
Tx Spectrum Invert selection, where:
0=Normal
1=Tx Spectrum Inverted
Example:TSI=0 (selects normal)
TSI=
TSI?
TSI*
TSI#
TSI? TSI=x
(see Description of
Arguments)
Tx Scrambler TSC= 1 byte, 0, 1 or
2
Command or Query.
Tx Scrambler state, where:
0=Off
1=Normal
2=IESS-315
Note: When CnC mode is ON, Tx Scrambler state is fixed as IESS-315.
Example: TSC=1 (Scrambler On)
TSC=
TSC?
TSC*
TSC#
TSC? TSC=x
(see Description of
Arguments)
Tx Power
Level
TPL= 4 bytes Command or Query.
Tx Output power level between 0 and -40 dBm (minus sign assumed) for 950 to 1950MHz range.
Tx Output power level between 0 and -25 dBm (minus sign assumed) for 50 to 180MHz range.
Example: TPL=13.4
In AUPC mode, command is not valid. Response will be TPL*.
When APC is active, query returns “TPL=99.9”; when command is not valid, response will be TPL*.
When the external 20 dB attenuator is activated (via AUP), the permitted power level range shifted down by
20dB.
Example: –65 and -20 dBm.
600 Emulation:
Level range: 0 to -20 dBm (minus sign assumed).
600L Emulation:
Level range: 0 to -45 dBm (minus sign assumed).
TPL=
TPL?
TPL*
TPL#
TPL? TPL=xx.x
(see Description of
Arguments)