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Comtech EF Data CDM-710G User Manual

Page 230

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CDM-710G High-Speed Satellite Modem

Revision 1

Remote Control

MN-CDM710G

A–40

Parameter

Type

Command

(Instruction

Code and

Qualifier)

Arguments for

Command or

Response to

Query

Description of Arguments

Response to

Command

Query

(Instruction

Code and

Qualifier)

Response to Query

Rx Data Rate

N/A

10 bytes

Query Only.
Composite Rx Data rate, in kbps.

Resolution=1 bps.

Example: RDR=002047.999 (which is 2047.999 kbps)

RDR?
RDR*
RDR#

RDR? RDR=xxxxxx.xxx

Redundancy
State

RED=

1 byte

Command or Query.
Unit returns the redundancy state of the unit, where:

0 = Offline
1 = Online

*** This command can be used to force the unit offline, this is done by
sending RED=0. This is only valid if redundancy mode is enabled. If
redundancy is not enabled, then RED=0 will return an error. The unit
cannot be forced online.

*** If the unit is not in redundancy mode, then the unit will always be online.

Example: RED=0 (force unit offline)

RED=
RED?
RED*
RED#

RED? RED=x

(see description of
arguments)

Rx Frequency
Offset

N/A

5 bytes

Query only.
Unit returns the value of the measured frequency offset of the carrier being
demodulated. Values range from

± 0 to ± 100 kHz, 100 Hz resolution.

Returns 999999 if the demodulator is unlocked.

Example: RFO=+002.3 (which is + 2.3 kHz)

RFO?
RFO*
RFO#

RFO? RFO=sxxx.x

Rx Frequency

RFQ=

9 bytes

Command or Query.
Rx Frequency (in MHz)
52 to 88 MHz, and 104 to 176 MHz (70/140 Modulator)
950 to 1950 MHz (L-Band Modulator)

Resolution=100Hz.

Example: RFQ=0950.0000

RFQ=
RFQ?
RFQ*
RFQ#

RFQ? RFQ=xxxx.xxxx

Rx Frame Size

N/A

1 byte

Query Only.
Rx Frame Size Long/Short selection, where:
0=Short,
1=Long

Example: RFS =0 (which is Short FEC Frame Size)

Returns RFS=x if Demodulator unlocked.

This is automatically detected on demod acquisition.

N/A RFS?

RFS

=x

Rx FEC Type

N/A

1 byte

Query Only.
Rx FEC coding type, where:
1=LDPC

( FEC is dependent on the RX Mode Type.)

Example: RFT=1 (which is LDPC coding)

RFT?
RFT*
RFT#

RFT? RFT=x

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