Keysight N9041B - 6.6.6.2 Freq Ref In; 6.6.6.3 External Freq Ref; 6.6.6.4 Ext Ref Locked (Remote Query Only)

6 Input/Output
6.6 Freq Ref Input
6.6.6.2 Freq Ref In
Specifies the frequency reference as being the internal reference, an external
reference at the front panel input labeled Ref In.
Remote Command
[:SENSe]:ROSCillator:PXIReference:SOURce INTernal | EXTernal
[:SENSe]:ROSCillator:PXIReference:SOURce?
Example
:ROSC:PXIR:SOUR INT
:ROSC:PXIR:SOUR?
Dependencies Only available when Select Ref is not NONE
Preset
INTernal
State Saved Saved in instrument state
6.6.6.3 External Freq Ref
Tells the PXIe Ref module the frequency of the external reference. When the
external reference is in use this information is used by the Ref module to determine
the internal settings needed to lock to that particular external reference signal.
For the instrument to stay locked, the value entered must be within 5 ppm of the
actual external reference frequency. So, it is important to get it close, or you risk an
unlock condition.
Remote Command
[:SENSe]:ROSCillator:PXIReference:EXTernal:FREQuency <freq>
[:SENSe]:ROSCillator:PXIReference:EXTernal:FREQuency?
Example Set the external reference frequency to 20 MHz, but does not select the external reference:
:ROSC:PXIR:EXT:FREQ 20 MHz
Select the external reference:
:ROSC:PXIR:SOUR EXT
Dependencies Only available when Select Ref is not NONE
Preset 10MHz
State Saved Yes
Min 1MHz
Max 110MHz
6.6.6.4 Ext Ref Locked (Remote Query Only)
Returns the External Reference locked status
Remote Command
[:SENSe]:ROSCillator:PXIReference:EXTernal:LOCK?
Spectrum Analyzer Mode User's &Programmer's Reference 2457