Hardkey and Softkey Reference ESG Family Signal Generators
Freq
4-36 User’s Guide
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.
Default Value: Off
Softkey Location:
Freq > Freq Ref Off On
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.
Default Value: Off
Softkey Location:
Freq > Freq Ref Set
Mode 1 Optimize <10kHz Offset
Press this softkey to set the signal generator to mode 1 which optimizes
phase noise at offsets below 10 kHz.
Softkey Location:
Freq > Optimize Φ Noise > Mode 1 Optimize > 10k Offset
Mode 2 Optimize >10kHz Offset
Press this softkey to set the signal generator to mode 2 which optimizes
phase noise at offsets above 10 kHz.
Softkey Location:
Freq > Optimize Φ Noise > Mode 2 Optimize > 10k Offset
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