Calibration of ADC 212

jia-shiuan tsai · Post by **jia-shiuan tsai** » Tue Dec 13, 2005 8:33 am

Hello,

I have an ADC 212 for almost 2 years. Recently I have found the
measuring value are not accurate.

i.e., I used a well calibrated voltage source to provide DC 5.000V.
however, in PicoLog, the reading was, say, 4.97V and 4.96V for
channel A and B (@ +-20V range). And it was worse in 5V range.

it looks like my ADC-212 needs to do some calibration or fixing.
is it possible for me to do some simple calibration of ADC212?

thanks in advance.

jia-shiuan tsai · Post by **jia-shiuan tsai** » Tue Dec 13, 2005 8:37 am

P.S. Of course, I've already tried the newest version of PicoLog.

Michael · Post by **Michael** » Wed Dec 14, 2005 11:57 am

Hello,

Only Pico can calibrate our hardware. However, you can build a custom range to calculate an offset in voltage reading.

Please read the help files on Custom Ranges.

Best regards,
Michael

Jia-Shiuan Tsai · Post by **Jia-Shiuan Tsai** » Thu Dec 15, 2005 6:54 am

Michael,

Thanks for the reply. I will try "Custon Ranges".

Since I'm in Taiwan, it would cost a lot money aND time if i sent my
ADC212 back to PicoTech in UK.

I have checked local distributors in Taiwan, asked them about calibration.

(http://www.picotech.com/distribl/taiwan.html),

they suggested me buying a new one....