Keithley 2470 User Manual

Section
6: Measure I-V characteristics of FETs Model 2470 High Voltage SourceMeter Instrument
User's Manual
6-12 2470-900-01 Rev. A / May 2019
SMU 2
*RST
:SENS:FUNC "CURR"
:SENS:CURR:RANG:AUTO ON
:ROUT:TERM REAR
:SOUR:FUNC VOLT
:SOUR:VOLT:RANG 20
:SOUR:VOLT:ILIM 1
:SOUR:SWE:VOLT:LIN 0, 5, 51, 0.01
 Reset the instrument.
 Set to measure current.
 Set to measure with autorange
enabled.
 Set to use the rear terminals.
 Set to source voltage.
 Set to the 20 V source range.
 Set the source limit to 1 A.
 Set up a linear sweep from 0 V to 5 V
in 51 steps, with a delay of 10 ms.
SMU 1
:OUTP ON
 Turn on the output.
Pseudocode
vds = []
ids = []
for i = 2, 5 do:
 Create an empty array to hold
measured voltage values.
 Create an empty array to hold
measured current values.
 Set up a for loop from 2 to 5
(inclusive).
SMU 1
:SOUR:VOLT i
 Set the source level to the iteration
number of the loop.
Pseudocode
delay(0.5)
 Delay for 500 ms to allow for settling.
SMU 2
:INIT
*WAI
 Trigger the sweep to start.
 Wait for the operations to complete.
Pseudocode
Read output queue
 Wait for sweep to complete.
Pseudocode
for SMU 2
vds[i-1]=TRAC:DATA? 1, 51,
"defbuffer1", SOUR
ids[i-1]=TRAC:DATA? 1, 51,
"defbuffer1", READ
 Receive each of 51 readings and
source values from the buffer and
save them in the arrays vds and ids,
respectively. The arrays start at index
one. Each point in the arrays contains
a list of values for each gate voltage.
Pseudocode
end for
 End the
for
loop.
SMU 2
:OUTP OFF
 Turn the output off. NOTE: All of the
source and measure values can be
returned from the arrays vds and
ids
.

Keithley 2470 Specifications

General

Brand	Keithley
Model	2470
Category	Power Supply
Language	English