I was using the load file. If my post solved your problem, mark it as a solution. Also, each data point’s time value might differ slightly from the actual time of measurement due to variations in software execution order and speed. Also, it dosen’t have any problem for now.. As far as free tutorials: Integration period controls analog integration on the SMU.

Uploader: Kagrel
Date Added: 4 July 2015
File Size: 21.85 Mb
Operating Systems: Windows NT/2000/XP/2003/2003/7/8/10 MacOS 10/X
Downloads: 90698
Price: Free* [*Free Regsitration Required]

Message 17 of I’m surprised the drivers didn’t break up those commands into subVIs. Message 14 of Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. With GPIB, measurement rates can exceed 10 per labvuew. If selected, this option will append a second sweep sequence from the ending value back to the starting value.

Keithley 238

The analysis will also extract the local slope resistance of the I-V curve at the open-circuit and short-circuit points. If selected, the analysis results if displayed are also included. If the file does not exist, create it and enter the following three lines: To assist with probing sensitive or fragile devices, this feature provides instant visual or audible feedback when contact has been made.

That is exactly what i want. Graph zoom preset keys: Export graph as image or data table. The time values are reported by the SMU, which has an internal clock that is reset at the beginning of each sweep. Non-NI adapters may require additional software drivers or configuration steps.


The result is a linear fit on a semilog plot, allowing extraction of diode parameters including ideality factor n and saturation current I 0.

keithley , nanovoltmeter – Discussion Forums – National Instruments

The diode analysis fits the exponential current-voltage behavior of a semiconductor p-n or Schottky junction diode. Enter the instrument address labvlew, then select the SMU type.

Start by downloading the drivers for them. For example, with a instrument in a solar cell testing laboratory, I used the commands shown above to provide an audible beep at the start and end of each sweep, and to control the shutter on the solar simulator.

However, note that terminology and symbol usage vary between authors; make sure to understand the purpose of the lateral correction factor C as used in this software.

Keithley ke238 Power Supply

I was using the load file. You need a single VI with functions for both instruments. However, it can cause variations in sweep rates high-sensitivity ranges have longer measurement delayand it does not work well with certain devices or noisy configurations.


A brief discussion of the theory can be found hereor in any microelectronics fabrication textbook or website. This program comes from the instrument manual, Table LEDs, motors, resistors, lamps, labvied, solenoids, etc Thanks for the link to the One of the following supported Keithley SMUs: However, if a sweep returns puzzling results, or takes dramatically longer than intended, turn off auto-range as one of the first troubleshooting steps.

The changes will be reflected immediately on the instrument. 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. Have you taken any of the numerous free tutorials? In general, 23X-series instruments should use the wait-for-SRQ read method, whereas 24XX-series instruments can be configured either way. If errors continue, or if the software becomes unresponsive, ksithley troubleshooting.

The complete license is included with the software.

Begin typing your search term above and press enter to search. Press ESC to cancel.

Back To Top