Problem with calibration of AT-MIO-16XE-10 card. Using E Series Calibrate VI I get error = -10840, using MIO Calibrate VI I get error = -10029.

[Dr J]

The reason I want to calibrate the card is that I am getting a spurious +10mV offset on the analog out channels, and a -60mV offset on the analog in. These offsets first occured after a hard-disk crash, where labview 6.0 was installed along with the new hard-disk. The computer is running window 95.

[Raecine Meza]

The correct function to use is E Series Calibrate. In the past, this 10840 error is returned by the E series calibrate function when the EEPROM of the board needs to be reprogrammed. To fix this problem, call customer support to send the board in (http://sine.ni.com/apps/we/niae_asc.main).

If you cannot wait for the board's EEPROM to be reprogrammed, then consider using averaging several datapoints rather than using single datapoints to lessen the offset in your results. There are other sources of bad readings besides the need for calibration. Check out this webpage for more troubleshooting advice:
http://digital.ni.com/public.nsf/websearch/cb279761ae4bc61186256a38005444c6

[Ed_McC]

Raecine - What causes a board's EEPROM to need to be reprogrammed? The customer simply replaced the harddisk.

[Raecine Meza]

One reason the eeprom needs to be reprogrammed is if it is an older board, it might need updated firmware. Or a rarer case is if the calibration constants currently stored in the eeprom are corrupt or cannot be found.