Comtec CDM-840 - Demodulator Status Commands and Queries

CDM-840 Remote Router MN-CDM840
Serial-based Remote Product Management Revision 3
7–16
7.3.4 Demodulator Status Commands and Queries
Parameter
Type
Command
(Instruction
Code
& Qualifier)
Number of
Arguments for
Command or
Response to Query
Description of Arguments
(Note that all arguments are ASCII numeric codes from 48 and 57)
Response to
Command
(Target to
Controller)
Query
(Instruction
Code &
Qualifier)
Response to Query
(Target to Controller)
Rx Es/No
N/A
4 bytes
Query only.
Returns the value of Es/No in the form xx.x, where:
xx.x=value, in dB, from -1 to -40 (negative sign (-) is implied) in 0.1 dB
increments.
NOTES:
1) The Es/No number correspond to the value that is displayed on HTTP
(via the Virtual Front Panel) or SNMP. This value is averaged in the
background for the previous 16 values.
2) For a faster Es/No reading use REN command.
EXAMPLE: <0/EBN?[cr]
RESPONSE NOTES:
1) Returns 99.9 if demod is unlocked.
2) Returns +040 for values greater than -40.0 dB.
N/A
ESN?
ESN=xxxxx
(see Description of
Arguments)
Rx Signal
Level
N/A
5 bytes
Query only.
Returns the value of the Rx signal level, in dBm, in the form xxxxx, where:
xxxxx=value, in dBm, from -25 to -55 with a tolerance of ±5 dBm, in 0.5 dBm
increments.
EXAMPLE: <0/RSL?[cr]
RESPONSE NOTES:
1) If in the range of -25 to -55 dBm, returns RSL=-xx.y
2) If >-25 dBm, returns SL1=GT-25 (GT=‘greater than’)
3) If <-55 dBm, returns SL1=LT-55 (LT=‘less than’)
N/A
RSL?
RSL=xxxxx
(see Description
of Arguments)