VVM (Vector Voltmeter) Mode – Option 308 131
Average Count determines the number of readings to average. The higher the
average count, the greater the amount of noise reduction.
An average counter is shown in the left edge of the screen as Avg N. This shows
the number of previous readings that have been averaged together. When the
counter reaches the specified count, then a ‘running average’ of the last N
readings is displayed.
Average Count = 1 means there is NO averaging.
This setting can be changed at any time without affecting calibration accuracy.
How to set Averaging
Press Meas Setup 4
Then More
Then Average N where N is the current count setting.
Enter a value using the numeric keypad. Enter 1 for NO averaging.
Press Enter.
While Averaging is in process, press Meas Setup 4, then More, then Restart
to restart the averaging.
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 Sweep 3.
Then choose one of the following:
o Single Automatically sets Continuous OFF and causes 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 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.
Zeroing
When performing a Cable Trimming operation, one cable is compared to another.
After measuring the first, shorter cable, pressing Zero performs the same
operation as Data->Memory, then Data/Mem, also known as Normalization. All
subsequent electrical length measurements are relative to the stored
measurement.
To make an accurate measurement, set Zero OFF before calibrating.
Zero after changing the IF Bandwidth.
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