Comtech EF Data CDM-625A User Manual

Page 325

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CDM-625A Advanced Satellite Modem

MN-CDM625A

Serial-based Remote Product Management

Revision 3

8–13

Parameter

Type

Command

(Instruction

& Qualifier)

Number of

Arguments

Description of Arguments

Response to

Command

Query

(Instruction &

Qualifier)

Response to Query

…Tx FEC

Code Rate

(cont)

y=VersaFEC-2 ModCod 29 – 32-ARY 0.684

z=VersaFEC-2 ModCod 30 – 32-ARY 0.708

“=VersaFEC-2 ModCod 31 – 32-ARY 0.733

&=VersaFEC-2 ModCod 32 – 32-ARY 0.757

@=VersaFEC-2 ModCod 33 – 32-ARY 0.782

[=VersaFEC-2 ModCod 34 – 32-ARY 0.801

]=VersaFEC-2 ModCod 35 – 32-ARY 0.831

{=VersaFEC-2 ModCod 36 – 32-ARY 0.855 (Long Block only)

}=VersaFEC-2 ModCod 37 – 32-ARY 0.879 (Long Block only)

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

Example: <0/TCR=1 (selects Rate 3/4)

Tx Data Rate

TDR=

9 bytes

Command or Query (Query only in ACM).

Sets or returns Tx Data rate in the form xxxxx.xxx, where:

xxxxx.xxx=Value, in kbps, from 18 kbps to 25 Mbps

Resolution=1 bps

Notes:

1) Additional auxiliary G.703 sub-rates are available, selected using:

00512.AUX 01024.AUX 02048.AUX

2) The connectors used for the Aux rates are IDI/DDO.

3) These Aux rates are not available with Drop & Insert or IDR.

4) Read-only if Framing Mode is Quad Drop & Insert (TFM=8).

Data rate is set by assigning the number of channels on each port.

5) Read-only if Modulation Type is a ‘Reserved’ type

Example: <0/TDR=02047.999 (selects 2047.999 kbps)

TDR=

TDR?

TDR*

TDR#

TDR?

TDR=xxxxx.xxx

(see Description of

Arguments)

Tx

Symbol Rate

TSR=

9 bytes, numeric Query only (Command or Query in IP-ACM or VersaFEC-2 ACM).

Allows remote access to the Tx symbol rate in the form ddddd.ddd.

Note: Symbol Rate range in IP-ACM is from 37 ksym/sec to 4100 ksym/sec

Symbol Rate ranges in VersaFEC-2 ACM Short Block is from 37 ksym/sec to 1000 ksym/sec

Symbol Rate ranges in VersaFEC-2 ACM Long Block is from 37 ksym/sec to 125000 ksym/sec

TSR?

TSR=

TSR*

TSR#

TSR?

TSR=ddddd.ddd

(see Description of

Arguments)

Tx Frequency

TFQ=

9 bytes

Exception –

600 Emulation

8 bytes

Command or Query.

Sets or returns Tx Frequency in the form xxxx.xxxx, where:

70/140 Unit range is from 50 MHz to 180 MHz, and

L-Band Unit (FAST Option) range is from 950 MHz to 2250 MHz

Resolution=100Hz.

Example: <0/TFQ=0950.9872

TFQ=

TFQ?

TFQ*

TFQ#

TFQ?

TFQ=xxxx.xxxx

Exception –

600 Emulation:

TFQ=xxx.xxxx

Tx

Data Invert

TDI=

Exception –

600/L Emulation:

ITD=

1 byte, 0 or 1

Command or Query.

Sets or returns Invert Transmit Data in the form x, where:

0=Normal

1=Inverted

Example: <0/TDI=1 (selects TX Data Invert

TDI=

TDI?

TDI*

TDI#

TDI?

Exception –

600/L Emulation:

ITD?

TDI=x

(see Description of

Arguments)

Tx Sub-Mux

on/off

TMX=

1 byte, 0 or 1

Command or Query.

Sets or returns Tx Sub-Mux in the form x, where:

0=Off

1=On

TMX?

TMX=

TMX*

TMX#

TMX?

TMX=x

(see Description of

Arguments)

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