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Scale Settings
Adjust the Y-axis scale to see the relevant portions of the data trace. The Y-axis is
divided into 10 graticules.
This setting can be changed at any time without affecting calibration accuracy.
How to set Scale
Press Scale / Amptd .
Then choose from the following:
1.
2.
3. Set Scale, Reference Level, and Reference Position
4. Set Top and Bottom graticule values. The scale per division is calculated
Averaging
Trace Averaging helps to smooth a trace to reduce the effects of random noise on a
measurement. The FieldFox computes each data point based on the average of the
same data point over several consecutive sweeps.
Average Count determines the number of sweeps to average. The higher the average
count, the greater the amount of noise reduction.
CAT (Cable and Antenna Test) Mode - Option 305
After using the ▲|▼ arrows or the rotary knob, press Enter. The amount of
o
frequency increment is based on the current span and can NOT be changed in
CAT Mode.
Automatically adjusts the Y-axis to comfortably fit the Min and Max
Autoscale
amplitude of the trace on the screen.
Autoscales all of the traces on the screen, useful only for dual-
Autoscale All
trace configurations.
Manually enter a scale per division to view specific areas of the trace.
Scale
o
Manually set the value of the reference line. Enter a negative value by
Ref Level
o
pressing Run/Hold (+/-) either before or after typing a value.
Manually set the position of the reference line. Values must be
Ref Position
o
between 0 (TOP line) and 10 (BOTTOM line)
to set the value of the Top graticule.
Top
o
to set the value of the Bottom graticule.
Bottom
o
Enter a negative value by pressing Run/Hold (+/-) either before or after typing a
o
value.
Scale annotation on the
FieldFox screen
· Reference Line = red arrow
· Ref Level = -40 dB
· Ref Position = 1
· Scale = 2 dB per division
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