Keysight Technologies C Series - Averaging (CAT, NA, Power Meter, Channel Scanner, and Pulse Measurement Modes Only)

Data Analysis FeaturesDELETE_IF
All about Scale Settings
764 Keysight N9915-90020 User’s Guide
Averaging (CAT, NA, Power Meter, Channel Scanner, and Pulse
Measurement Modes Only)
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.
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 Enable/Disable Averaging
1. Press BW 2
.
2. Then choose from:
— Channel Scanner:
Average OFF ON change to ON to enable averaging (Default = OFF).
— Power Meter, Pulse Measurements:
Average Auto Man OFF change to Auto or Man to
enable averaging (Default = Auto, Auto == FieldFox sets the average count based on
current mode settings).
—CAT, NA:
Average 1 change to a number >1 to enable/set averaging (Default = 1 (OFF)).
3. Press
Enter.
4. Refer to
“How to set Trace Averaging” on page 763.
How to set Trace Averaging
1. Press BW 2.
2. Then choose from:
— Channel Scanner:
Average OFF ON change to ON to enable averaging and then set the
current count, using
Average Count softkey.
— Power Meter, Pulse Measurements:
Average Auto Man OFF change to Auto or Man to
enable averaging (Default = Auto, Auto == FieldFox sets the average count based on
current mode settings).
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 112
.