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Comtech EF Data CDM-625 User Manual

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CDM-625 Advanced Satellite Modem

Revision 15

Appendix D

MN-CDM625

D–22

Parameter

Type

Command

(Instruction

& Qualifier)

Number of

Arguments

Description of Arguments

Response to

Command

Query

(Instruction &

Qualifier)

Response to

Query

Rx Data Rate RDR=

9 bytes

Command or Query (Query only in IP-ACM).

Rx Data Rate, in kbps, between 18 kbps to 25 Mbps.

Resolution=1 bps
Example: RDR=02047.999.

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

00512.AUX

01024.AUX

02048.AUX

If set for QDI (Quad D&I), RDR is query only.

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

These Aux rates are not available with D&I or IDR.

RDR=

RDR?

RDR*

RDR#

RDR?

RDR=xxxxx.xxx

(see Description of

Arguments)

Rx Symbol

Rate

RSR=

9 bytes,

numeric

Query only (Command or Query in IP-ACM).

Allows remote access to the Rx Symbol Rate in the form ddddd.ddd
Note: Symbol Rate ranges in IP-ACM = 37 ksym/sec to 4100 ksym/sec

RSR=

RSR?

RSR*

RSR#

RSR?

RSR=ddddd.ddd

(see Description of

Arguments)

Rx

Frequency

RFQ=

9 bytes

Exception –

600 Emulation:

8 bytes

Command or Query.

Frequency ranges:

50 MHz to 180 MHz, and

950 MHz to 1950 MHz (L-Band – FAST option)

950 MHz to 2150 MHz (Top card hardware Revision 2)

Resolution=100Hz.
Note: The CDM-625 supports 70,140 MHz bands and L-Band.
Example: RFQ=0950.9872

RFQ=

RFQ?

RFQ*

RFQ#

RFQ?

RFQ=xxxx.xxxx

(see Description of

Arguments)

Exception –

600 Emulation:

RFQ=xxx.xxxx

Rx Sub-Mux

on/off

RMX=

1 byte, 0 or 1 Command or Query.

Rx Sub-Mux in the form x, where:

0=Off

1=On

RMX?

RMX=

RMX*

RMX#

RMX?

RMX=x

(see Description of

Arguments)

Rx Sub-Mux

Ratio

RMR=

2 bytes,

numeric

Command or Query.

Rx Sub-Mux Ratio (IP/Synchronous Interface) in the form xx, where:

RMR?

RMR=

RMR*

RMR#

RMR?

RMR=xx

(see Description of

Arguments)

00=1/9

01=1/8

02=1/7

03=1/6

04=1/5

05=1/4

06=2/7

07=1/3

08=2/5

09=3/7

10=1/2

11=3/5

12=2/3

13=3/4

14=4/5

15=1/1

16=5/4

17=4/3

18=3/2

19=5/3

20=2/1

21=7/3

22=5/2

23=3/1

24=7/2

25=4/1

26=5/1

27=6/1

28=7/1

29=8/1

30=9/1

31=1/59 32=1/39 33=1/19

Example: RMR=01 (Selects ratio 1/8)