Comtech EF Data cdm-570a - Page 292

CDM-570A/570AL Satellite Modem with Optional Packet Processor
Revision 5
Serial-based Remote Product Management 8–26 MN-CDM570A
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
External
Reference
Frequency
ERF=
1 byte,
value of 0 thru 5
Command or Query.
Sets or returns 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 = Internal 10MHz plus output (the Reference is available on the “Ext Ref” rear
connector (small rear-panel LED indicates when ON))
Example: <0/ERF=0 (External reference not used – uses internal)
ERF=
ERF?
ERF *
ERF #
ERF?
ERF = x
(see Description of
Arguments)
Internal 10MHz
Reference
Adjustment
ADJ=
4 bytes,
numeric
Command or Query.
Sets or returns fine adjustment of the modem Internal 10MHz Reference in the
form sddd, where:
s = sign (+ or –), and
ddd = value from 000 to 999
ADJ=
ADJ?
ADJ*
ADJ#
ADJ?
ADJ=sddd
(see Description of
Arguments)
Warm-up Delay
WUD=
1 byte,
value 0 or 1
Command or Query.
Sets or returns Warm-up Delay for internal frequency reference (OCXO)
in the form
x, where:
0 = Disabled (instant on – no delay for OCXO to reach temperature)
1 = Enabled (unit waits until OCXO reaches correct temperature)
Example: <0/WUD=1 (selects Warm-up Delay)
WUD=
WUD?
WUD*
WUD#
WUD?
WUD=x
(see Description of
Arguments)
Countdown
CTD=
3 bytes
Command or Query.
As a command, only takes the argument 000. Truncates the Warm-up delay
period to zero and forces the unit into ‘instant-on’ mode. For example, CTD=000
terminates the warm-up delay.
As a query, returns the Warm-up Delay countdown, in seconds remaining. Range
is from 000 to 200 seconds.
Example: <0/CTD?
>0/CTD=067 (means the unit will wait another 67 seconds before it
enters its operational state)
CTD=
CTD?
CTD*
CTD#
CTD?
CTD=xxx
(see Description of
Arguments)