Comtech EF Data CDM-760 - Manual (Page 260)

Serial-based Remote Product Management Revision 2
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760
8–26
Parameter
Type
Command
(Instruction
& Qualifier)
Number of
Arguments
Description of Arguments
Response to
Command
Query
(Instruction &
Qualifier)
Response to Query
Demo Mode DMM = 1 byte, value
of 0 or 1
Command or Query.
Enables or Disables Demo Mode in the form x, where:
0 = Disable Demo Mode
1 = Enable Demo Mode
EXAMPLE: <0/DMM=0 (disables Demo Mode)
DMM=
DMM?
DMM*
DMM#
DMM? DMM=x
(see Description of
Arguments)
8.5.6 ACM Parameters
Parameter
Type
Command
(Instruction
& Qualifier)
Number of
Arguments
Description of Arguments
Response to
Command
Query
(Instruction &
Qualifier)
Response to Query
ACM Operating
Parameters
ACM = 7 bytes Command or Query.
Sets or returns ACM operating parameters in the form mmMMATT, where:
mm = Minimum ModCod, range is 1 to 28 (NET=0) or 1 to 47 (NET=1)
MM = Maximum ModCod, range is 1 to 28
A = Defines action on remote demod unlock (0 = go to minimum Tx ModCod, 1 = maintain Tx ModCod)
TT = Target EsNo Margin, from 0 to 45 that is ten times the EsNo in dB (from 0.0dB to 4.5dB).
EXAMPLE: <0/ACM=0121010 (sets min ModCod = 1, max ModCod = 21, Go to minimum Tx ModCod when
remote demod unlocks, sets Target Es/No at 1.0dB.)
ACM=
ACM?
ACM*
ACM#
ACM? ACM=mmMMATT
(see Description of
Arguments)
ACM
Degradation
Configuration
ADC = 10 bytes Command or Query.
Sets or returns ACM configuration parameters in the form qqeesstt, where:
qq = QPSK degradation in dB from 0.0 to 9.9
ee = 8PSK degradation in dB from 0.0 to 9.9
ss = 16-APSK degradation in dB from 0.0 to 9.9
tt = 32-APSK degradation in dB from 0.0 to 9.9
uu = 64-APSK degradation in dB from 0.0 to 9.9
EXAMPLE: <0/ADC=0305071720 (sets QPSK degradation to 0.3 dB, 8PSK degradation to 0.5 dB,
16-APSK degradation to 0.7 dB, 32-APSK degradation to 1.7 dB, and 64-APSK to 2.0 dB)
ADC=
ADC?
ADC*
ACC#
ADC? ADC=qqeessttuu
(see Description of
Arguments)
Remote
Signal to Noise
Ratio
N/A 5 bytes Query only.
Returns the value of the remote demod Es/No, in dB, in 0.1 dB steps, in the form sxx.x.
EXAMPLE: <0/RES?
<0/RES=+12.4 (Es/No = 12.4 dB)
NOTE: Responds with +99.9 when demod is unlocked or >23.5 if Es/No value is out of range.
N/A RES? RES=sxx.x
(see Description of
Arguments)
Local
Signal to Noise
Ratio
N/A 5 bytes Query only.
Returns the value of Local Es/No, in dB, in 0.1 dB steps, in the form sxx.x.
EXAMPLE: <0/LES?
>0000/LES=+12.3 (Es/No = 12.3 dB)
NOTE: Responds with +99.9 when demod is unlocked or >23.5 if Es/No value is out of range.
N/A LES? LES=sxx.x
(see Description of
Arguments)