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Remote Control
Parameter
Command
Arguments
Type
(Instruction
for Command
Code and
or Response to
qualifier)
Query
Buffer Fill
N/A
2 bytes,
State
numerical
Rx BER
N/A
5 bytes
Redundancy
N/ A
1 byte, value of
State
0 or 1
Local/Remote
N/A
1 byte, value of
Status
0 or 1
Serial Number
SNO=
4 bytes
numerical
Software
N/A
4 bytes,
Revision
numerical
Equipment ID
N/A
6 bytes,
numerical
B–16
Description of arguments
(note that all arguments are ASCII numeric codes,
that is, ASCII codes between 48 and 57)
Query only.
Unit returns the value of the buffer fill state. Values
range from 1 to 99% .Example: BFS=33 (buffer fill
state is 33%) Returns 00 if demod unlocked.
Query only.
Unit returns the value of the estimated corrected BER
in the form a.b x 10exp-c. Fist and second bytes are
value, 3rd and 4th bytes are the exponent.
Returns99999 if demod is unlocked.
Example: BER=4.8E3 (BER is 4.8 x 10-3)
Query only.
Returns the redundancy state of the unit, where:
0 = Off Line (forced into standby by 1:N or 1:1
Switch)
1= On Line (normal).
All other codes invalid.
Example: RED=1 (On Line)
Query only.
Returns the local/remote status of the unit, where:
0 = local
1= remote
Example: LRS=1 (unit is in remote mode)
Command portion is FACTORY USE ONLY. Used
to set or Query the units 4 digit serial number.
0000 to 9999 Unit returns its S/N, in the form xxxx.
Example: SNO=1765
Query only.
Unit returns the value of internal software revision
installed in the unit, in the form x.xx
Example: SWR=1.03 (Ver 1.03)
Query only.
Unit returns information concerning the equipment
identification, and the options fitted, in the form
aaaabc, where:
aaaa defines the Modem model number. Example:
0500 is CDM-500
b defines the IF band, with 1 = 70MHz, 2 = 140MHz
c defines RX only, with 1 = RX/TX, 2 = RX only
Ex: EID=050012 (CDM-500, 70 MHz band, RX
only)
CDM-500 Closed Network Satellite Modem
Response to
Query
Command (target to
(Instruction
controller)
Code and
qualifier)
N/A
BFS?
N/A
BER?
N/A
RED?
N/A
LRS?
SNO= (message ok)
SNO?
N/A
SWR?
N/A
EID?
Response to
query (target
to controller)
BFS=xx (see
description for
details of
arguments)
BER=a.bEc
(see description
for details of
arguments)
RED=x
(see description
for details of
arguments)
LRS=x
(see description
for details of
arguments)
SNO=xxxx
(see description
for details of
arguments)
SWR=x.xx
(see description
for details of
arguments)
EID=aaaabc
(see description
for details of
arguments)
Rev. 1.3
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