Section 5: Pulse measure and pulse generator units
Model 4200A-SCS Parameter Analyzer Reference Manual
5-30
4200A-901-01 Rev. C / February 2017
Errors
If either graph is not updating as expected, select Refresh to zoom out and redraw both graphs. It is
possible to have a test with too many pulses to be suitably graphed. This may be from too many
pulses from a large number of sweep points or step points, or a large number of pulses. The next
figure shows the output “Too many pulses to graph” for the lower graph. Note that this does not mean
that the test will not run. If you select OK on the PMU Advanced Test Settings dialog box and it does
not generate any warning or error messages, the test is valid and runs (even though the entire test
waveform cannot be displayed).
Figure 169: Preview error (Too many pulses to graph)
PMU connection compensation
You can correct errors caused by connections and cable length between the 4225-PMU and the
device under test (DUT) by using connection compensation. When connection compensation is
enabled, the default or measured compensation values are factored into each DUT measurement.
You have the option to use either default connection compensation values (PMU or RPM) or custom
connection compensation values. The default values can be used for typical connection setups that
use the supplied cables. The custom connection compensated values are generated when
connection compensation is done from the Clarius software. The custom values provide optimum
compensation. Custom connection compensation data is generated for open and short conditions.
The custom connection compensation values can be enabled or disabled from a test in Clarius.
If connection compensation is disabled, the compensation values will not be applied to the
measurements.
For UTMs, the default connection compensation values can only be enabled using the
(on page 13-96) function.
