Keithley SourceMeter 2470, Руководство пользователя

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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
.