5: Measuring low-resistance devices Model 2450 Interactive SourceMeter® Instrument
5-6 2450-900-01 Rev. C / December 2013
Figure 22: Model 2450 remote interface connections
Set up the low-resistance application using SCPI commands
This sequence of SCPI commands makes 100 low-resistance measurements by sourcing current and
measuring resistance. In this example, the source current magnitude and limit voltage are set
automatically. It uses remote commands to change the front-panel display to display the TREND
swipe screen. This allows you to view numeric data at the top of the screen and graphic data at the
bottom of the screen.
You may need to make changes so that this code will run in your programming environment.
Send the following commands for this example application:
Command Description
TRIG:LOAD:LOOP:SIMP 100
SENS:FUNC "RES"
SENS:RES:RANG:AUTO ON
SENS:RES:OCOM ON
SENS:RES:RSEN ON
DISP:SCR PLOT
OUTP ON
INIT
*WAI
TRAC:DATA? 1, 100, "defbuffer1", READ, REL
OUTP OFF
•
• Configure Simple Loop trigger model template to
make 100 readings.
• Set to measure resistance.
• Turn on auto range.
• Enable offset compensation.
• Set to use 4-wire sense mode.
• Show the TREND swipe screen.
• Turn on the output.
• Initiate readings.
• Wait until finished.
• Read the resistance and time values from
defbuffer1.
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