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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

Keysight x-series User Manual

Other manuals for Keysight x-series