Data Analysis Features
All about Scale Settings
Keysight N9938-90003 User’s Guide 213
Average Count determines the number of sweeps 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 sweeps that have been averaged together to form the current trace. When the counter
reaches the specified count, then a ‘running average’ of the last N sweeps 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 Trace Averaging
—Press BW 2.
— 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 Trace Averaging is in process, press Sweep 3
then Restart to restart the averaging at 1.
Averaging is often used to increase the dynamic range of a measurement.
To achieve the highest dynamic range, select NA mode and reduce the IF
Bandwidth setting. Learn more about dynamic range in
“Increase Dynamic
Range” on page 86
.
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