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LCS-4 L-Band Combiner Switch
Remote Control Operation
Command
Arguments
(Instruction
for Cmd or
Parameter
Code and
Response
Type
qualifier)
to Query
Reference
SRO=
3 bytes
Oscillator
Adjust
External
N/A
1 byte,
Reference
value of 0,1
Oscillator
Enable
Reference
RSS=
1 byte,
Oscillator
value of 0,1
Source
Select
Internal
VPC=
1 byte,
Reference
value of 0,1
Oscillator
Power
Control
Reference
RFL=
1 byte,
OSC. Fault
value of 0,1
Logic
Synchronize
SRC=
4 bytes
Reference
No
Cal
Arguments
Description of Arguments
Note that all arguments are ASCII
numeric codes between 48 and 57.
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.
Query only.
Ref OSC Status, where:
0=Internal Reference
1=External Reference
Example: XRF=1
Command or Query.
Ref OSC select, where:
0=Internal Reference
1=External Reference
Example: RSS=1
Parameter 17 of SGC Command.
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.
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.
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
Response to
Command
(Target to
Controller)
SRO=(message ok)
SRO?(received ok,
but invalid
arguments found)
SRO* (message ok,
but not permitted in
current mode)
N/A
RSS=(message ok)
RSS?(received ok,
but invalid
arguments found)
RSS* (message ok,
but not permitted in
current mode)
VPC=(message ok)
VPC?(received ok,
but invalid
arguments found)
VPC* (message ok,
but not permitted in
current mode)
RFL= (message ok)
RFL? (received ok,
but invalid
arguments found)
SRC=(message ok)
SRC?(received ok,
but invalid
arguments found)
SRC* (message ok,
but not permitted in
current mode)
A-13
MN/LCS4.IOM
Query
(Instruction
code and
Response to query
qualifier)
(Target to Controller)
SRO?
SRO=xxx
(same format as command
arguments)
XRF?
XRF=x
(same format as command
arguments)
RSS?
RSS=x
(same format as command
arguments)
VPC?
VPC=x
(same format as command
arguments)
RFl?
RFL=x
(same format as command
arguments)
SRC?
SRC=xx.x
(same format as command
arguments)
Revision 1
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