Comtech EF Data CDM-550T, Manual

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Remote Control CDM-550T Satellite Modem
15–20 Rev. 1.3
Parameter
Type Command
(InstructionC
ode 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)
Rx BER N/A 5 bytes 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. Returns 99999 if demod is
unlocked.
Example: BER=4.8E3 (BER is 4.8 x 10-3) N/A BER? BER=a.bEc
(see description for
details of arguments)
Redundancy
State N/A 1 byte, value of
0 or 1 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) N/A RED? RED=x (see
description for details
of arguments)
Local/Remote
Status LRS= 1 byte, value of
0 or 1 Command or query (Command only if S/W > 1.13)
As a query, returns the local/remote status of the unit, where:
0 = local
1= remote
When used as a comand, uses the same codes for an argument.
Example: LRS=1 (unit is in remote mode) LRS=
(message ok) LRS? LRS=x (see
description for details
of arguments)
Serial Number SNO= 4 bytes
numerical
0000 to 9999 Command portion is FACTORY USE ONLY. Used to set or
Query the units 4 digit serial number.
Unit returns its S/N, in the form xxxx.
Example: SNO=1765 (1
ST
4 DIGITS OF ESN – 9 DIGIT S/N)
SNO= (message ok) SNO? SNO=xxxx (see
description for details
of arguments)
Extended Serial
Number ESN= 9 bytes
numerical
Command portion is FACTORY USE ONLY. Used to set or
Query the unit’s 9 digit serial number.
Unit returns its S/N, in the form xxxxxxxxx.
Example: ESN=123451765 (S/W Version > 1.16) ESN= (message ok) ESN? ESN=xxxxxxxxx (see
description for details
of arguments)
Equipment
ID N/A 6 bytes,
numerical
Query only.
Unit returns the equipment identification, and the options
fitted, in the form aaaabc, where:
aaaa defines the Modem model number. Example:
2550 is CDM-550T, no Reed-Solomon or Turbo
3550 is CDM-550T with Reed-Solomon Codec
4550 is CDM-550T with Turbo Codec fitted (Rate 3/4 QPSK
only - S/W Version less than 1.15)
5550 is CDM-550T with Turbo Codec fitted (Rate 3/4 QPSK,
plus Rate 21/44 and Rate 5/16 BPSK)
b defines the IF band, with 1 = 70MHz, 2 = 140MHz
c defines RX only, with 1 = RX/TX, 2 = RX only.
Example: EID=455011 (CDM-550T, Rate 3/4 Turbo Codec,
70 MHz band, RX/TX) N/A EID? EID=aaaabc (see
description for details
of arguments)