How to set the time difference between each data when using keithley 2400 scanning

Hello friends,

I use scanning Keithley vi the extent of SCANNING and acquire vi. I want to measure the voltage for each step and a pause between each two data, so I need a delay between each I step.

I'm a starter to use Labview, thank you very much for your answers.

Perry

As Dennis says, if you use the built-in scan function, you will need to consult the manual. See Section 10-16 (this is page 10 of article 16, only paragraphs not but 10, 16) for the manual Keithley 2400.

The Keithley 24xx series has a speed of measurement in units called PLC (Power Line Cycles). The default speed is 1PLC, which means a measure is taken with each cycle of line 1 power supply or 1/60th of a second (16.67ms). 24XX can range from 0.01 PLC (all 0.16ms) 10 PLC (all 166.6ms). The faster you measure, the less accuracy you get.

To programmatically set this value, the command is

ENSe:CURRent:NPLCycles

ENSe:VOLTage:NPLCycles

Depending on what you are sensing and where is the number of controllers from 0.01 to 10.

Another factor that will determine the time between data points is the cycle SDM. These are more complicated, look at your Keithley manual for more information. Look at article 6 and article 11 for more information.

Note:

PLC times are based on a cycle of 60 Hz US.

Tags: NI Software

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