D00219 Revision E
– 2019-07-19 - Page 23
5.11 The PinCheck Variance Report
When the discharges to a pin pair are
completed, the mean and variance of the
sequence of PinCheck numbers is
computed. Variance is the customary
method for measuring constancy and
typically is 10
-3
or less for PinCheck
readings of an undamaged pin pair. If a
change occurs during discharges to a pin
pair, the variance will be much higher,
clearly identifying the event.
The PinCheck Variance report shows the
number of the Test pin and the Return pin,
and the mean and variance computed for all
of the discharges applied to the pin pair.
One line is present for each step of the
PinScript. The results are sorted by
variance to bring any high-variance pins to
the top of the list. This avoids the necessity
to visually scan through hundreds of graphs
to identify an anomaly. Curve trace plots
are still available for a detailed look at the
results.
The Pin Report display includes a
navigation bar at the right side to enable
scanning up and down the report.
5.11 Viewing Test Results
When the test is complete, the results may be viewed in two ways:
1. On-screen
view and plot -
See section 4.10
2. Reports
saved on C:ETS
See below