Keithley S530 User Manual

S530 Parametric Test System Test Subroutine Library User's Manual Section 3: Test subroutine library reference
S530-907-01 Rev. A / September 2015 3-47
Details
This subroutine measures the substrate current when the gate voltage (V
GS
) is swept with V
DS
and
V
BS
held constant. Maximum current measured is returned as the function result. The gate voltage at
maximum current is also returned. In some cases, peak substrate current is referred to as I
SX
.
A substrate connection is mandatory; the ismax parameter returns -1.0 if the sub parameter is less
than 1.
The typical value for the npts parameter is 10 to 20.
V/I polarities
N-channel +V
DS
, +V
low
and V
high
, -V
BS
P-channel -V
DS
, -V
low
and V
high
, +V
BS
Source-measure units (SMUs)
 SMU1: Forces vds, maximum current limit
 SMU2: Sweeps V
GS
, default current limit
 SMU3: Forces vbs, default current limit, measures I
SX
Example
isubmx(d, g, s, sub, vds, vbs, vlow, vhigh, npts, &ismax, &vgmax)
Schematic
kdelay
This subroutine provides an appropriate delay time based on current and voltage values.
Usage
void kdelay(int npin, double i, double v)
npin
Input
The number of pins connected to the charging node
i
Input
The current, in amperes
v
Input
The voltage, in volts

Keithley S530 Specifications

General

Brand	Keithley
Model	S530
Category	Test Equipment
Language	English