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J.4 remote control operation – Comtech EF Data CDM-600/600L User Manual

Page 275

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CDM-600/600L Open Network Satellite Modem

Revision 3

Appendix J

MN/CDM600L.IOM

J–5

J.4

Remote Control Operation

For complete information on remote control operations for the CDM-600L, refer to Appendix D. REMOTE CONTROL

The following CDM-600L commands/queries are enhanced when the programmable External Attenuator is detected (features associated
with enhanced operation via the External 20 dB Step Attenuator Kit are shown in bold):

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

AUPC
Enable or
Power
mode

selector

AUP=

1 byte, value
0, 1, 2 or 3

Command or Query.
AUPC mode enable/disable and/or (with CDM-600L External Attenuator)
power mode selection, where x is:
0=MANUAL – Normal power mode (-45 to 0dBm)
1=AUPC (requires EDMAC or D&I++ framing)
2=MANUAL-LOW – Low power mode (-65 to -20dBm) – When 20dB

External Attenuator is activated

3=AUPC-LOW – When AUPC is enabled and 20dB External Attenuator

is activated

Example: AUP=1 (AUPC enabled)

AUP=
AUP?
AUP*
AUP#

AUP? AUP=x

(see description
of arguments)

Tx Power
Level

TPL= 4

bytes

Command or Query.
NOTE: COMMAND NOT VALID IN AUPC MODE.

Tx Output power level between 0 and -45 dBm in the form xx.x (minus
sign assumed). [Beyond –40 dBm exceeds the specification].

Example: TPL=13.4

Note: When Output Power Leveling is enabled, power level configuration
is not allowed, and this command is rejected. Response will be TPL*. The
response to the query TPL? will be the adjusted leveled value.
WHEN EXTERNAL 20dB ATTENUATOR IS PRESENT ON CDM-600L:

The power level indicated is the final power after the attenuator, if the
External 20dB Attenuator is present.
IN MANUAL (Normal) POWER MODE (AUP=0): Tx Output power level
may be configured between -45 and 0 dBm. [Between -45 and -40 dBm
exceeds the specification.]

IN MANUAL-LOW (Low Power) MODE (AUP=2): Tx Output power level
may be configured between -65 and -20 dBm in the form xx.x (minus sign
assumed). [Between -65 and -60 dBm exceeds the specification. The
power levels exceeding the specification are indicated on the front panel
menu by a

*

.]

TPL=
TPL?
TPL*
TPL#

TPL? TPL=xx.x

(see description
of arguments)