144 FieldFox User’s Guide
Then Avg N where N is the current count setting.
Enter a value using the numeric keypad. Enter 1 for NO averaging.
Press Enter.
To restart the averaging process, press Meas Setup 4, then More, then Restart
Single or Continuous Measure
This setting determines whether the FieldFox measures continuously or only
once each time the Single button is pressed. Use Single to conserve battery
power or to allow you to save or analyze a specific measurement.
This setting can be changed at any time without affecting calibration accuracy.
How to set Single or Continuous
Press Meas Setup 4
Then choose one of the following:
o Single Automatically sets Continuous OFF and causes the FieldFox to
make ONE measurement, then hold for the next Single key press. When a
data trace is displayed, the entire trace is measured, then holds. The Hold
annotation changes to an arrow --> while the measurement occurs.
o Continuous OFF and Hold both put the FieldFox in Hold mode.
o Continuous ON Makes continuous measurements. This is the typical
setting when battery power is not critical.
You can also use Run / Hold +/- to toggle between Single and Continuous.
VVM Calibration
CalReady is accurate for most zeroed VVM measurements at frequencies below
about 6 GHz. For the very highest accuracy, especially above 6 GHz, then perform
a QuickCal or Mechanical Cal. Learn more on page 62.
Press Zero OFF before calibrating.
Zeroing
Zeroing, also known as Normalization, or Data/Memory, simply “Zeroes” the
Magnitude and Phase display when Zero is pressed. All subsequent
measurements are relative to the measurement that was made when Zero was
pressed.
When an instrument state is saved with Zero ON, the zeroing data is saved with
the state file, similar to how a calibration is saved with a state file.
When performing a 1-Port Cable Trimming operation, a reference cable is
connected and measured. Then Zero is pressed, and subsequent cables are
measured and trimmed to match electrical length of the reference cable.
For 2-port measurements, Zero is typically pressed when a THRU connection is
made in place of a DUT. Learn more on page 146.
Press Zero OFF before performing a QuickCal or Mechanical Cal.
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