Comtech EF Data CDM-500 - Manual (Page 80)

CDM-500 Closed Network Satellite Modem Remote Control
Rev. 1.3 B–15
Parameter
Type Command
(Instruction
Code and
qualifier) Arguments
for Command
or Response to
Query Description of arguments
(note that all arguments are ASCII numeric codes,
that is, ASCII codes between 48 and 57) Response to
Command (target to
controller) Query
(Instruction
Code and
qualifier) Response to
query (target
to controller)
Retrieve next
5 unread
Stored Events N/A 75 bytes Query only
Unit returns the oldest 5 Stored Events which have
not yet been read over the remote control. Reply
format: {CR}Sub-body{CR}Sub-body{CR}Sub-
body{CR}Sub-body{CR}Sub-body, where Sub-
body= ABCmmddyyhhmmss,
A being the fault/clear indicator.
F=Fault
C=Clear
I=Info
B being the fault type where:
1=Unit
2=Rx Traffic
3=Tx Traffic
4=Power on/off, or log cleared
and C being the fault code, as defined under the ‘FLT’
message table entry, except Info codes, which are:
0=power off, 1=power on, 2=log cleared, 3=global
config change, and 4= redundancy config change. If
there are no new events, the unit replies with RNE? If
there are less than 5 events to be retrieved, the
remaining positions are padded with zeros. N/A RNE? RNE={CR}AB
C
mmddyyhhm
mss{CR}ABCm
mddyyhhmms
s{CR}ABCmm
ddyyhhmmss{
CR}ABCmmdd
yyhhmmss{CR
}ABCmmddyy
hhmmss
(see description
for details of
arguments)
Retrieve
Number of
unread Stored
Events N/A 2 bytes,
numerical
Query only.
Unit returns the number of Stored Events which
remain unread, in the form xx. Note: This means
unread over the remote control - viewing the stored
events from the front panel of the modem does not
affect this value. Example reply: NUE=98 N/A NUE? NUE=xx
(see description
for details of
arguments)
Rx Eb/No N/A 4 bytes,
numerical Query only.
Unit returns the value of Ebi/No, between 2 and
16dB. Resolution 0.1 dB. Returns 99.9 if demod is
unlocked.
Example: EBN=12.3 (which is Eb/No = 12.3 dB) For
values greater than 16.0 dB, the reply will be
EBN=+16. N/A EBN? EBN=xx.x
(see description
for details of
arguments)
Rx Freq
Offset N/A 5 bytes, 1st , +
or -, next
4bytes
numerical Query only.
Unit returns the value of freq. offset of the carrier
being demodulated. Values range from ±0 to ± 30
description for kHz, 100 Hz resolution.Example:
RFO=+023 (offset is +2.3 kHz) Returns 9999 if
demod unlocked. N/A RFO? RFO=nxx.x
(see details of
arguments)