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Additional Configure RF Menu
When you press More , the Additional Configure RF
Menu (below) is displayed.
Press Reset State to select RF On or Off at reset.
The display will reflect your selection.
Frequency Scaling – Lets you set a reference mul
-
tiplier value and apply it to all frequency parame-
ters. The reference multiplier can be any value
between 0.1 and 14. Changing the multiplier value
changes the entered and displayed frequencies, but
it does not affect the output of the signal generator.
For example:
Frequency scaling set to 4
CW frequency set to 20 GHz
681XXC output frequency is 5 GHz (20 GHz ¸ 4)
Press Freq Scaling to open the reference multiplier
parameter, then edit the current value using the
cursor control key or rotary data knob or enter a
new value using the data entry key pad and any ter
-
minator key. To close the open multiplier parameter,
press Freq Scaling or make another menu selection.
Press Term RF Off to select 40 dB (minimum) of at
-
tenuation when RF is switched off in units with a
step attenuator (Option 2) installed. This provides a
better output source match. The display will reflect
Yes to indicate the 40 dB of attenuation is applied.
Press Term RF Off again to select 0 dB of attenua
-
tion when the RF is switched off. The display will
reflect No to indicate 0 dB of attenuation is applied.
Press Previous Menu to return to the main Config
-
ure RF Menu display.
3-84 681XXC OM
LOCAL (FRONT SYSTEM
PANEL) OPERATION CONFIGURATION
NOTE
Resetting the 681XXC sets the fre-
quency scaling reference multipler
to 1.
NOTE
The Term RF Off selection is only
available in those 681XXC models
having Option 2 and Firmware Ver
-
sion 1.01 and above.