User`s guide

176 Agilent InfiniiVision 2000 X-Series Oscilloscopes User's Guide
13 Measurements
Average
Average is the sum of the levels of the waveform samples divided by the
number of samples.
Where x
i
= value at ith point being measured, n = number of points in
measurement interval.
The Full Screen measurement interval variation measures the value on all
displayed data points.
The N Cycles measurement interval variation measures the value on an
integral number of periods of the displayed signal. If less than three edges
are present, the measurement shows "No edges".
The X cursors show what interval of the waveform is being measured.
DC RMS
DC RMS is the root- mean- square value of the waveform over one or more
full periods.
Where x
i
= value at ith point being measured, n = number of points in
measurement interval.
The Full Screen measurement interval variation measures the value on all
displayed data points.
Preshoot
local Maximum
local Minimum
Base
Top
Preshoot
Average =
∑
x
i
n
RMS (dc) =
∑
i=1
n
x
i
2
n