This software was built and tested with NI Time-varying current in a forward-biased p-n junction diode, measured in a drafty room. These values can be useful in identifying major problems with shunt and series resistance; however, unless the I-V data is “clean and smooth”, these extracted values tend to reflect measurement artifacts. The diode analysis fits the exponential current-voltage behavior of a semiconductor p-n or Schottky junction diode. And the process you mentioned is just for arranging the data.

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When you say ” Message 17 of To prevent software labvew, only the most recent data points are displayed on the graph during DC-mode operation.

Keithley High Current Source Measure Un – Instrument Driver – National Instruments

The diode analysis fits the exponential current-voltage behavior of a semiconductor p-n or Schottky junction diode. If selected, auto-range will instruct the instrument to automatically switch to the lowest available measurement range at each point of the sweep.

Enter the instrument address first, then select the SMU type. The software will select the largest span keithlye data points for which valid i. To copy the graph as an image, exactly as it is displayed on screen, right-click on the graph area and select “Copy data.


If you find this software to be especially useful, please write me a note to let me know, or acknowledge it in your paper or thesis. Most Active Software Boards: In the event that a communication or configuration error occurs, this timeout should prevent the software from remaining unresponsive indefinitely. LEDs, motors, resistors, lamps, relays, solenoids, etc It may be helpful to first touch the probes together to verify wiring and instrument setup.

The instrument will reboot if switching from GPIB mode.

keithley , nanovoltmeter – Discussion Forums – National Instruments

The custom commands sweep allows you to manually specify commands to perform sweep types that are otherwise not supported in this software. A brief discussion of the theory can be found hereor in any microelectronics fabrication textbook or website.

Finally, connect the communications interface to the SMU and power it on. The result is a linear fit on a semilog plot, allowing extraction of diode parameters including ideality factor n and saturation current I 0.

Message 1 of 5. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Your main VI can then call these other VIs to do the actual work. If my post solved your problem, mark it as a solution.


Instrument Control (GPIB, Serial, VISA, IVI)

Most Active Software Boards: Also known as kelvin connections. Message 2 of This configuration is illustrated below, along with the relevant equations.

Select the current range using the sliders. Message 15 of For commercial labviw, please contact me. You need a single VI with functions for both instruments. Message 1 of If this occurs, find the “IV. Most Active Software Boards: Sweep configuration presets can also be associated with an analysis action resistance, 4-probe, solar cell, or diode and an export action save data or copy data.

The upper limit on the number of data points depends on computer speed and memory, and on other limits imposed by LabVIEW or bit memory address space. This is particularly useful for 4-probe measurements with 23X-series instruments.