Calibration PCI 6024E

[chenchie]

It seems there is some voltage offset when I test my PCI 6024E DAQ card by "test pannel" of MAX.

I check the mannual about calibration, but I don't have those instruments. Is there any other method? Or does NI company calibrates their products for their customers?   

[Travis G.]

Hello chenchie,

There are two types of calibration that can be performed on your DAQ device: internal or self-calibration, and external.  An internal calibration adjusts the calibration coefficients relative to the internal reference onboard the DAQ device.  The internal calibration requires no external connections or calibration equipment, and can be performed in Measurement & Automation Explorer (MAX), by right-clicking on your device under Devices and Interfaces > NI-DAQmx Devices, and selecting Self-Calibrate.  An external calibration adjusts the calibration coefficients of the device relative to a high-precision voltage source external to the device, and can be traceable to NIST (National Institue of Standards and Technology) standards.  National Instruments provides services for having your device externally calibrated.  More information can be found at www.ni.com/calibrate.

Also, more details about internal and external calibration for your device can be found in the E-Series Help Manual.

I hope this helps,

Travis G.
Applications Engineering
National Instruments
www.ni.com/support

[chenchie]

Hi Travis,

Thanks a lot for your information. It successifully solved one of my PCI 6024E DAQ card problems.

I have two PCI 6024E, and I use them to measure temperature with K type thermocouple. One of them has a 6 degree C offset and has been solved by your method. But other one has a -100 degree C offset, and it fail to calibrate by self-calibration. Is there any other method to fix it?

Thanks a lot,

Chen 

[Travis G.]

Hello Chen,

A -100 deg C offset sounds like a larger issue than just miscalibration.  When you say that it fails a self-calibration, does MAX throw an error or does the calibration just not solve the problem?  Do you receive any errors when you try to run the thermocouple task? Basically, I would recommend comparing the working thermocouple channel to the non-working one, changing one thing at a time, in order to narrow down what is causing the issue.  Make sure that your thermocouple is connected properly and that you are using the same settings for your task that you use for the thermocouple measurement that does work.  Let me know some more information about any errors that you are receiving and hopefully I can give you some further suggestions.

Regards,
Travis G.
Applications Engineering
National Instruments
www.ni.com/support

[chenchie]

Hi Travis,

Thanks a lot for your help. I don't know why after I posted last message, after one day I re-calibrated it again and it worked. Now both of my DAQ cards work properly. Before that, it shows a error message with a number while calibrating, but I didn't record that number. Any way, Thanks a lot.

Chen

[aditya12345]

I am using LabVIEW 8.6 ,windows xp ,pci 6024e and SCB 68 connector. My application needs to take analog input at around 10 hertz frequency, then do some signal conditioning over the obtained signal. I have to send the processed signal through analog output channel.My application needs to have delay as small as possible. Can you plz tell me how to do it? can i find any readymade vi for my application.

thanks in advance.

[Dennis_Knutson]

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