Mocomtech CDM-QX User Manual

Page 226

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CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision

7

Appendix C

MN/CDMQX.IOM

C–8

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

TX Data
Rate

TDR=

9 bytes

Command or Query.

TX Data rate, in kbps, between 32 kbps and 20 Mbps depending
upon code rate and modulation scheme, in the form xxxxx.xxx.

Resolution=1 bps.

(See Chapter 5. FRONT PANEL OPERATION for the valid rates)
Query ONLY if Interface Type is Quad Drop & Insert (ITF=D).

Example: TDR=02047.999 (2047.999 kbps)

TDR=
TDR?
TDR*
TDR#
TDR$
TDR^
TDR@

TDR? TDR=xxxx.xxx

(see Description of
Arguments)

TX
Frequency

TFQ=

9 bytes

Command or Query.

TX Frequency in the form xxxx.xxxx, where:

0950.0000 to 1950.0000 MHz (for L-Band units) or
0500.0000 to 0090.0000 and 0100.0000 to 0180.0000 MHz (for
70/140 MHz units)

Resolution=100 Hz

Example: TFQ=0950.9872

TFQ=
TFQ?
TFQ*
TFQ#
TFQ$
TFQ^
TFQ@

TFQ? TFQ=xxxx.xxxx

(see description
arguments)

TX FEC
Type

TFT=

1 byte, value
of 0 though 7

Command or Query.

TX FEC coding type in the form x, where:

0=Reserved
1=Viterbi
2=Viterbi + Reed-Solomon
3=Reserved
4=Reserved
5=TCM+Reed-Solomon (Forces TCR=3 2/3)
6=Turbo
7=Reserved

TFT=
TFT?
TFT*
TFT#
TFT$
TFT^
TFT@

TFT? TFT=x

(see description
arguments)

TX
Modulation
Type

TMD=

1 byte, value
of 0 though 5

Command or Query.

TX Modulation Type in the form x, where:

0=BPSK
1=QPSK
2=Reserved
3=8-PSK
4=16-QAM (Turbo or Viterbi + RS only)
5=Reserved

Depending on FEC type, not all of these selections will be valid.

Example: TMD=1 (QPSK)

TMD=
TMD?
TMD*
TMD#
TMD$
TMD^
TMD@

TMD? TMD=x

(see Description of
Arguments)

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