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
6-10 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:CONF:LIST:CRE "sweepVals"
:
DIG:LINE2:MODE TRIG, OUT
:
DIG:LINE1:MODE TRIG, IN
:
TRIG:DIG2:OUT:STIM NOT2
:
TRIG:DIG1:IN:CLE
:
TRIG:DIG1:IN:EDGE RIS

Reset the instrument.

Set to measure current.

Set to measure with autorange
enabled.

Set to rear terminals.

Set to source voltage.

Set to 20 V source range.

Set the source limit to 1 A.

Create the source configuration list
sweepVals
.

Set digital line 2 to trigger out.

Set digital line 1 to trigger in.

Set the stimulus for digital line 2 to
the
notify2
event.

Clear digital line 1.

Detect for a rising edge on line 1.
Pseudocode for i = 0, 5, 0.1 do:

Set up a
for
loop from 0 to 5 in 0.1
steps (inclusive).
SMU 2 :
SOUR:VOLT i
:
SOUR:CONF:LIST:STORE "sweepVals"

Set the voltage level to the iteration
number.

Store the source configuration to
sweepVals
.
Pseudocode end for

End the
for
loop.
SMU 2 :
TRIG:BLOC:CONF:RECALL 1, "sweepVals"
:
TRIG:BLOC:SOUR:STAT 2, ON
:
TRIG:BLOC:WAIT 3, DIG1
:
TRIG:BLOC:DEL:CONS 4, 0.01
:
TRIG:BLOC:MEAS 5
:
TRIG:BLOC:CONF:NEXT 6, "sweepVals"
:
TRIG:BLOC:BRAN:COUN 7, 51, 4
:
TRIG:BLOC:NOT 8, 2
:
TRIG:BLOC:BRAN:COUN 9, 4, 3
:
TRIG:BLOC:SOUR:STAT 10, OFF

Create a block to load
sweepVals
at the first index.

Create a block to turn the output on.

Create a block to wait on digital line
3.

Create a block to delay for 0.01
seconds.

Create a block to take a
measurement.

Create a block to load the next
index of
sweepVals
.

Create a block to branch to block 4,
50 times.

Create a block to generate the
notify2 event.

Create a block to branch to block 3
three times.

Create a block to turn the output off.
SMU 1 :
INIT
*WAI

Initiate the trigger model.

Wait for the model to complete.