Wavecrest SIA-3000, Руководство пользователя

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Strip Chart
1-sigma/pk-pk
view
To Measure:
On:
For more
information on this
tool, refer to:
VISI Online Help
Analyze long-term drift/wander or effects of temperature change or
supply voltage change on the 1-sigma and Peak-to-peak values of
histograms
•
While still in the Strip Chart tool, change the view from “Avg/Min/Max” to “1-Sigma/Pk-
Pk”. The default interval between histogram measurements is 0.1seconds.
•
Press the RUN button on the front panel or the top menu .
Figure 9 - Shows the change of 1-sigma and Pk-Pk values by logging
histogram statistics at user defined intervals.
Figure 9 shows the results from the same tool, but a different view of the measurements
from Figure 7. In this case, the 1-sigma and Peak-to-Peak values are plotted relative to
when the histogram was created. This specific example shows that as the mean (from
Figure 7) changes, the 1-sigma and Peak-to-Peak values of the histograms remain level.
In some cases, as temperature or supply voltage to the part are varied, the period mean
will remain constant, but the jitter will increase. This plot would show that effect. If the
histogram grew in width with the addition of DJ or RJ, the Pk-Pk and 1-sigma lines would
trend upwards across the plot.
Clock Tools Overview Page 9 of 13