Comtech EF Data LCS-4 - Manual (Page 77)

LCS-4 L-Band Combiner Switch Revision 1
Remote Control Operation MN/LCS4.IOM
A-13
Parameter
Type
Command
(Instruction
Code and
qualifier) Arguments
for Cmd or
Response
to Query
Description of Arguments
Note that all arguments are ASCII
numeric codes between 48 and 57.
Response to
Command
(Target to
Controller) Query
(Instruction
code and
qualifier)
Response to query
(Target to Controller)
Reference
Oscillator
Adjust SRO= 3 bytes Command or Query.
Ref Osc Adjust, between 000 to 255
Resolution 001
Example: SRO=087
Note: SRO cannot be adjusted when the Switch is
locked to an external reference source.
Parameter 19 of SGC Command. SRO=(message ok)
SRO?(received ok,
but invalid
arguments found)
SRO* (message ok,
but not permitted in
current mode) SRO? SRO=xxx
(same format as command
arguments)
External
Reference
Oscillator
Enable N/A 1 byte,
value of 0,1 Query only.
Ref OSC Status, where:
0=Internal Reference
1=External Reference
Example: XRF=1 N/A
XRF? XRF=x
(same format as command
arguments)
Reference
Oscillator
Source
Select RSS= 1 byte,
value of 0,1 Command or Query.
Ref OSC select, where:
0=Internal Reference
1=External Reference
Example: RSS=1
Parameter 17 of SGC Command. RSS=(message ok)
RSS?(received ok,
but invalid
arguments found)
RSS* (message ok,
but not permitted in
current mode) RSS? RSS=x
(same format as command
arguments)
Internal
Reference
Oscillator
Power
Control VPC= 1 byte,
value of 0,1 Command or Query.
Ref Osc Power Control, where:
0=Off
1=ON
Example: VPC=1
Used to disable internal VCXO in the case of failure.
Parameter 18 of SGC Command. VPC=(message ok)
VPC?(received ok,
but invalid
arguments found)
VPC* (message ok,
but not permitted in
current mode) VPC? VPC=x
(same format as command
arguments)
Reference
OSC. Fault
Logic RFL= 1 byte,
value of 0,1 Command or Query.
RFL controls whether or not the Software monitors the
external reference source. If enabled and no source is
present a fault will be reported.
0=EXT Reference not monitored.
1=EXT Reference is monitored and the lock state
reported.
Example: RFL=1
Parameter 20 of SGC Command. RFL= (message ok)
RFL? (received ok,
but invalid
arguments found) RFl? RFL=x
(same format as command
arguments)
Synchronize
Reference
Cal SRC=
No
Arguments 4 bytes Command or Query.
SRC synchronizes internal reference voltage with
voltage of externally locked VCXO.
Query shows current locked voltage. Command sets
SRO value to match Vt.
Command Example: SRC=
Query Example: SRC=02.6 SRC=(message ok)
SRC?(received ok,
but invalid
arguments found)
SRC* (message ok,
but not permitted in
current mode) SRC? SRC=xx.x
(same format as command
arguments)