Comtech EF Data CDM-710 Installation And Operation Manual page 263

CDM-710/L Broadcast Satellite Modem
Serial Interface Operation
Controller-to-Target
Instruction Code & Qualifier
Parameter
Type
Command Query
Equipment ID
(continued)
External ERF= ERF?
Reference
Frequency
Query Rx N/A ESN?
Es/No
Redundancy ESW= ESW?
Switch Mode
Number of
Arguments for
Command or
(Note that all arguments are ASCII numeric codes from 48 and 57)
Response to
Query
t=Interface Slot 1 where 0=None, 1= CDI-40 ASI, 2=CDI-70 GBEI (NOT USED),
3=CDI-60 HSSI
u=Interface Slot 2 where 0=None, 1=CDI-40 ASI (NOT USED), 2=CDI-70 GBEI,
3=CDI-60 HSSI (NOT USED)
NOTES:
1) When unit is 'MODULATOR ONLY' query returns '0 (Not Installed)' for Rx
options.
2) When unit is 'DEMODULATOR ONLY' query returns '0 (Not Installed)' for
Tx options.
1 byte Command or Query.
Sets or returns the External Reference Frequency in the form x where:
0=Internal
1=External 1 MHz
2=External 2 MHz
3=External 5 MHz
4=External 10 MHz
5=External 20 MHz
COMMAND EXAMPLE: <0001/ERF=0{CR} (sets Internal reference, External
reference not used)
4 bytes Query only.
Returns the value of EsNo (when in DVB-S2 mode) in the form xx.x where:
xxxx=Value from 0 to 22 dB, in 0.1 dB steps.
NOTES:
1) Returns 99.9 if demod is unlocked.
2) For values greater than 22.0 dB, the reply will be ESN=+022
1 byte Command or Query.
Sets or returns Redundancy Mode in the form x where :
0=Disable
1=Enable
COMMAND EXAMPLE: <0001/ESW=1{CR} (enables Redundancy Mode)
9–55
Description of Arguments
MN/CDM710.IOM
Revision 12
Target-to-Controller
(See Description of Arguments)
Response to Response to
Command Query
ERF= ERF=x
ERF?
ERF*
ERF#
ESN? ESN=xxxx
ESN*
ESN#
ESW= ESW=x
ESW?
ESW*
ESW#