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Double-Pulse Test Preparation
Clamp Circuit Module
For accurate R
level to the oscilloscope probe while the DUT is turned off. This way an
oscilloscope probe with a lower divider ratio (10:1) can be used for accurately
measuring V
Probe Socket
for VCLAMP
N2873A Probe
Figure 9
32
(on) measurements a clamping circuit limits the applied voltage
DS
while the transistor is turned on.
DS
IMPORTANT: The clamp circuit does NOT clamp the voltage to the
DUT. The clamp circuit is in parallel to the DUT and clamps the
voltage output to the oscilloscope. It has a very simple transfer
function:
Header
Socket to
Test Fixture
Clamp Circuit Module
Avoid bending any of the pins on the DUT PC Module. Carefully
align all of the pins with the connector before installing the PCB.
V
OUT
V
= 8 V
CLAMP
8 V
Keysight Double-Pulse Test Fixture Installation and Use Guide
Clamp Circuit Module
Threshold Voltage
V
TH
V
IN
SMU Output
connected to
these two pins
for Calibration
Header Socket
to DUT Module
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