Strip Chart
Min/mean/max 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 mean measurement values
•
From the main menu, press Clock, then Strip Chart to open the tool.
•
The default interval between histogram measurements is 0.1seconds.
•
Press the RUN button on the front panel or the top menu
to run continuously.
Figure 7 - Shows drift of period by logging histogram statistics at user
defined intervals
Figure 7 shows the results of “logged” histogram values. The Strip Chart tool allows
histograms to be performed at regular intervals chosen by the user. In other words, when
a histogram is performed, the tool waits for a specified time interval and then performs
another histogram measurement (see Figure 8). The Max, Average, Min values are
displayed relative to when the histogram
was created. This tool is useful to plot the
effects of environmental changes such as
temperature, Vcc, or ground changes. By
enabling Markers in Figure 7, we can see
the total deviation of the mean period
measurement—4.16ps over the total
acquisition time—51.6 seconds on the x-
axis.
Long term studies of environmental
effects on timing parameters can be
performed using this tool.
Figure 8 - Shows Histogram values
plotted relative to time of
acquisition
Clock Tools Overview
Page 8 of 13
