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Hardkey and Softkey Reference
Freq
Freq Ref Off On
This softkey toggles the frequency reference mode on and off. When frequency
reference mode is turned on, the frequency value displayed is equal to the current
hardware output frequency minus the reference value set by the
Freq Ref Set
softkey. (The
Freq Ref Set softkey sets the reference value equal to the current
output frequency. If you have not yet set the reference value, the preset value for
frequency reference is 0 Hz.) The
REF indicator is turned on in the frequency area
of the display. All frequency parameters will now be set as relative to the
reference value.
Frequency offsets can be used with frequency reference mode. In this situation,
the display will show the frequency calculated as the current hardware output
frequency minus the reference value plus the frequency offset.
Frequency reference mode only changes the display; it does not change the RF
output frequency. For example, if you set your RF output frequency to 700 MHz,
set your reference value, and then turn frequency relative mode on, your display
shows your frequency as 0 Hz but your output frequency remains at 700 MHz.
Softkey Location: Press
Freq, Freq Ref Off On
Status after Normal Preset: Off
SCPI Commands:
[:SOURce]:FREQuency:REFerence:STATe ON|OFF|1|0
[:SOURce]:FREQuency:REFerence:STATe?
Freq Ref Set
This softkey sets the current output frequency as a frequency reference value. It
also causes the
Freq Ref Off On softkey to toggle to the On position, turning on
frequency reference mode. All frequency parameters are then set as relative to the
reference value.
Softkey Location: Press
Freq, Freq Ref Set
Status after Normal Preset: Off
SCPI Commands:
[:SOURce]:FREQuency:REFerence <val><unit>
[:SOURce]:FREQuency:REFerence?
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