Comtech EF Data CDM-600/600L - Manual (Page 229)

CDM-600/600L Open Network Satellite Modem Revision 3
Appendix D MN/CDM600L.IOM
D–37
D.6.8 High-Stability Reference Option Commands and Queries (CDM-600 ONLY)
The commands and queries in this section require CDM-600 Hardware Rev. 2.0 or higher and installation of the optional High-Stability Frequency
Reference module.
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
Internal
10MHz
Reference
Adjustment ADJ= 4 bytes,
numeric
Command or Query.
This command provides fine adjustment of the Internal 10MHz
Reference on the High-Stability Frequency Reference module, in
the form sddd, where:
s = sign (+ or –)
ddd = value, 0-999
If High-Stability module is not installed, response to query is ADJ*. ADJ=
ADJ?
ADJ*
ADJ# ADJ? ADJ=sddd
(see Description of
Arguments)
Countdown of
Warm-up
Delay
remaining CTD= 3 bytes,
numeric
Command or Query.
xxx = countdown of the number of seconds remaining of the Warm-
up time.
As a command, the only permitted format is CTD=000, which
abandons the delay.
If Hi-Stability module is not installed, response to query is CTD*. CTD=
CTD?
CTD*
CTD# CTD? CTD=xxx
(see Description of
Arguments)
External
Frequency
Reference EFR= 1 byte, value of
0 thru 5 Command or Query.
0 = Internal 10MHz (default when module is not installed)
1 = External 1 MHz
2 = External 2 MHz
3 = External 5 MHz
4 = External 10 MHz
5 = External 20 MHz
See the EID response for indication that a high-stability module is
installed. EFR=
EFR?
EFR*
EFR# EFR? EFR=x
(see Description of
Arguments)
Warm-up
Delay WRM= 1 byte, 0 or 1 Command or Query.
0 = Delay off (instant on)
1 = Warm-up Delay on
If Hi-Stability module is not installed, response to query is WRM*. WRM=
WRM?
WRM*
WRM# WRM? WRM=x
(see Description of
Arguments)