Keithley 4200-SCS Reference Manual page 976

Section 12: Pulse Projects for Models 4200-PIV-A and 4200-PIV-Q
The purple/red curves are the pulse results in
traces).
Figure 12-21
vds-id-noselfheating UTM Graph tab
scope-shot
The scope-shot UTM is a general purpose utility that is used for validation, troubleshooting and for
prototyping transient tests. This UTM applies a pulse train to the DUT gate and a DC bias to the
DUT drain with a fixed set of values. The returned data is the scope waveform data, as shown in
Figure 12-22
The gate signal is the left pulse curve (blue), using the left Y axis. This curve is the pulse applied to
the DUT gate, with approximate calibration values applied. The drain signal is the right pulse (red),
using the right Y axis, representing Id, also approximate. Note that the applied drain voltage is DC,
but the pulse applied to the gate causes the pulsed response of the drain.
The default graph shows the approximate calibration factors to display the gate voltage and drain
current response, although it is possible to display the raw voltages for each scope channel. The
sheet tab has the raw voltage from the scope channels, the calibrated measurements for Vg, Vd
and Id, as well as the approximate values for the Vg and Id waveforms. In addition, the cursors
used to make the pulse measurement are listed. This is useful to determine if the measurement is
being made at a flat portion of the pulse. There is no way to provide alternate values for the
measurement cursors. Note that the raw waveform data does not have any Pulse IV calibration
factors applied, making it useful for a wide range of pulse tests and interconnect configurations.
The graph in
using the left Y axis, is the gate voltage applied to the DUT. The right pulse curve (red), using the
right Y axis, is the Id response. These values are approximate. The Sheet tab in
shows the right-most columns of data.
12-16
and Figure 12-23.
Figure 12-22 shows a result for a 100 ns wide pulse. The left pulse curve (blue),
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Model 4200-SCS Reference Manual
Figure 12-21 corresponding to the DC curves (blue
4200-901-01 Rev. S / May 2017
Figure 12-23