Keithley 4200-SCS, User Manual, Page: 157 / 335

4200-900-01 Rev. K / February 2017 Return to Section Topics 3-51
Model 4200-SCS User’s Manual Section 3: Common Device Characterization Tests
vdsid_pulseiv
Description The vdsid_pulse sweep is used to perform a pulsed Vd-Id sweep using the 4200-
PIV package. This test is similar to a typical DC Vd-Id but only two sources are
used: gate (VPUID pulse channel 1) and drain (DrainSMU). The gate is pulsed,
but the drain is DC biased.
Measurements are made with the two channel scope card. To create a family of Vd-
Id curves, change Vgs and run the test by using the append button. Make sure to
set the appropriate values for the Vds-Id parameters (see
Table 3-7 ). Table 3-8 and
Table 3-8 contain outputs and return values, respectively.
Connection The source and body (well) of the DUT must be shorted together and connected to
the common low (outer shield) of the SMA cables on the AC+DC output of the
4200-RBT. The RBT connected to GateSMU (with the power divider) should be
connected to the gate. The RBT connected to DrainSMU should be connected to
the drain. For detailed connection information, refer to the
PIV-A interconnect
assembly procedure on page 3-35 .
Table 3-6
Return values for cal_pulseiv
Value Description
0
OK
-13001 Array Sizes Do Not Match
-13002 Arrays Not Large Enough For Data
-13003 Invalid Instruments
-13004 Unable To Malloc Memory
-13005 Unable To Find Delay Between Channels
-13006 Scope Measurement Error
-13007 Unable To Write To Calibration Files
-13008 Invalid Range
-13009 Invalid Calibration Type
-13010 Calibration Data Does Not Meet
Correlation Specification
-13998 Calibration Constant Error
-13999 Divider Cal Error
Table 3-7
Inputs for vdsid_pulseiv
Input Type Description
Vgs double The pulsed gate-source voltage bias, output by channel 1 of the pulse
generator card (VPUID).
Vg_off double The DC bias applied by the GateSMU to put device in the OFF
state. Normally set to 0 V for enhancement FETs (may be non-zero for
depletion FETs).
VdStart double The starting sweep value for Vd, output by the DrainSMU (defined
below).
VdStop double The final sweep value for Vd, output by the DrainSMU (defined below).