4 Input/Output Functions
Input/Output
Pulse key will be blank, and sending the PULSe parameter via SCPI will generate an error:
Preset This is unaffected by a Preset but is set to SENSe on a "Restore Input/Output Defaults" or "Restore
System Defaults->All".
State Saved Saved in instrument state.
Status Bits/OPC
dependencies
STATus:QUEStionable:FREQuency bit 1 set if unlocked.
Backwards Compatibility
Notes
Freq Ref In was not saved in state in the legacy instruments. It is a part of state in the X-Series.
Initial S/W Revision Prior to A.02.00
Modified at S/W Revision A.14.00
Remote Command
[:SENSe]:ROSCillator:SOURce?
Notes The query [SENSe]:ROSCillator:SOURce? returns the current switch setting. This means:
1. If it was set to SENSe but there is no external reference nor 1pps signal so the instrument is
actually using the internal reference, then this query returns INTernal and not SENSe.
2. If it was set to SENSe and there is an external reference present, the query returns EXTernal and
not SENSe.
3. If it was set to SENSe and there is a 1 pps signal present, the query returns PULSe and not SENSe.
4. If it was set to EXTernal, then the query returns "EXTernal"
5. If it was set to INTernal, then the query returns “INTernal”.
6. If it was set to PULSe, then the query returns “PULSe”
Preset SENSe
Backwards Compatibility
Notes
The query [:SENSe]:ROSCillator:SOURce? was a query-only command in ESA which always returned
whichever reference the instrument was using. The instrument automatically switched to the ext ref
if it was present.
In PSA (which had no sensing) the command [:SENSe]:ROSCillator:SOURce set the reference (INT or
EXT), so again its query returned the actual routing.
Thus the query form of this command is 100% backwards compatible with both instruments.
Initial S/W Revision Prior to A.02.00
Remote Command
[:SENSe]:ROSCillator:SOURce INTernal|EXTernal
Notes For PSA compatibility the command form is provided and is directly mapped to
[:SENSe]:ROSCillator:SOURce:TYPE
Initial S/W Revision Prior to A.02.00
196 EMI Receiver Mode Reference