Averaging And Enveloping - Tektronix 11801C User Manual

11801C User Manual

Averaging and Enveloping

The averaging and enveloping functions allow you to examine and manage
noisy signals.
H Averaging reduces the apparent noise of a displayed trace and provides
a cleaner display. The 11801C presents a trace that is an average of
several accumulated trace records. Each sample in a record is numeri
cally averaged with the same sample in all the other records. The result
ing trace is displayed.
H Enveloping shows the cumulative effect of noise over a period of time. It
is similar to averaging in that several trace records are accumulated and
a combined result is displayed. An enveloped trace shows the maximum
excursions of the individual trace records. This often results in a thick
er" trace that shows the limits of variation of the signal.
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