Specifications

Agilent 4155B/4156B Quick Start Guide, Edition 2 2-3
Making a Measurement
You measure the device under test (DUT) by using the measurement circuit as
shown in the following diagram. SMU2 and SMU3 sweep the same voltage to the
gate and drain. SMU3 measures the drain current (Id). The source and substrate are
connected to circuit common.
You should get result similar to the following figure. Gate voltage Vg (swept from
0 V to 2 V) is assigned to X axis, ÖId
is assigned to Y1 axis, and ¶ÖId / ¶Vg is
assigned to Y2 axis.