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AVERAGE LENGTH
The VAVG command enables video averaging. During video averaging, two traces are displayed simultaneously.
Trace C contains signal responses as seen at the input detector. Trace A or B contains the same responses digitally
averaged. The digital reduces the noise floor level, but does not affect the sweep time, bandwidth, or any other
analog characteristics of the analyzer.
Before executing VAVG, select trace A or B as the active trace (CLRW) and blank the remaining trace.
The active function readout indicates the number of sweeps averaged; the default is 100 unless otherwise speci-
fied. Increasing the number of sweeps averaged increases the amount of averaging.
Use VAVG to view low level signals without slowing the sweep time. Video averaging can lower the noise floor
more than a 1 Hz video bandwidth, if a large number of sweeps is specified for averaging. Video average may also
be used to monitor instrument state changes (changing bandwidths, center frequencies, etc.) while maintaining a
low noise floor. (See Chapter 11 in Section I. Also see KSG and KSH.)
VAVG
Description/Default
Real. Default is 100.
VAVG
Video
Average
Range Restriction
Represents maximum number
of sweeps executed for
averaging.
Programming 36 1
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