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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–16

Parameter

Type

Command

(Instruction

& Qualifier)

Number of

Arguments

Description of Arguments

Response to

Command

Query

(Instruction &

Qualifier)

Response to

Query

AUPC

Parameters

APP=

6 bytes

Command or Query.

Defines AUPC operating parameters in the form abc.cd:

a=Defines action on max. power condition, where:

(0=do nothing, 1=generate Tx alarm)

b=Defines action on remote demod unlock, where:

(0=go to nominal power, 1=go to max power)

c.c=Target Eb/No value, for remote demod from 0.0 to 14.9 dB, where:

numbers above 9.9 use hex representation for the first character, i.e. 14.9 is coded as E.9.

d =Max increase in Tx Power permitted, from 0.0 to 9.0 dB

Example: APP=015.67 (Sets no alarm, max power, 5.6 dB Target and 7 dB power increase.)

In IP-ACM mode:

a=Defines action on max. power condition, where:

(0=do nothing, 1=generate Tx alarm when max power is reached, 2=generate Tx alarm when mimimum

ModCod is reached)

b=Defines action on remote demod unlock, where:

(0=go to nominal power, 1=go to max power, 2=hold)

c.c = Max increase in Tx Power permitted, from 0.0 to 9.9 dB OR when CnC mode is on, from 0.0 to 3.0 dB
d = Mode (0=Normal, 1=+/- Track), read-only

APP=

APP?

APP*

APP#

APP?

APP=abc.cd

(see Description of

Arguments)

Remote

Eb/No

N/A

4 bytes

Query only.

Returns the value of Eb/No of the remote demod in the form xx.x, where:

xx.x=02.0 to 16.0

Responds 99.9 = remote demod unlocked.

Responds xx.x if EDMAC is disabled.

Example: REB=12.4
Note: For values > 16.0 dB, the reply will be 16.0

N/A

REB?

REB=xx.x

(see Description of

Arguments)

Tx Power

Level

Increase

N/A

3 bytes

Query only.

Returns the increase in Tx power level, in dB (from the nominal setting) due to the action of AUPC.

Responds x.x if AUPC is disabled.
Example: PLI=2.3

N/A

PLI?

PLI=x.x

(see Description of

Arguments)

Tx Clock

Source

TCK=

1 byte, value

of 0 thru 3

Command or Query.

Tx Clock Source, where:

0=Internal

1=Tx Terrestrial

2=Rx Loop-Timed

3=Ext TT (ST=RxSat)

Example: TCK=0 (selects Internal)

TCK=

TCK?

TCK*

TCK#

TCK?

TCK=x

(see Description of

Arguments)