Comtech EF Data CDM-550T - Manual (Page 125)

CDM-550T Satellite Modem Revision 3
Remote Control MN/CDM550T.IOM
15–9
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)
Tx Carrier On/Off
State
TXO=
1 byte, value of
0, 1, 2 or 3 Command or Query.
Tx Carrier On/Off state, where:
0 = Off due to front panel or rem. control command
1 = On
2 = Off due to ext H/W Tx Carrier Off command (not a valid
argument when used as a command) All other codes invalid.
3 = RTI (Receive/Transmit Inhibit)
Example: TXO=1 (which is Tx Carrier On) TXO= (message ok)
TXO? (received ok, but
invalid argument found)
TXO* (message ok, but
not permitted in current
mode) TXO? TXO=x
(Note that 2 is
not a valid
argument when
used as a
command)