4451 PCI-4451 DC offset and drift

[Jens Holme Bjorneboe]

I want to replace the PCI-4451 board with the PCI-4461 as the old board is now out of service.

The 4451 was used for DC measurements and generation among other things.

Does anybody in here knows the answer for these questions regarding the new PCI-4461 board:

1) What is the DC offset drift over time and temperature on both input and output?

2) How does the daily self-calibration work with this board (the 4451 needed this self-calibration)?

3) What is the maximum resolution for measuring?

 

KR

Jens Holme Bjørneboe

[hooovahh]

1) I've never known NI to post how the offset will drive with temperature.  Only that it will remain within the specified tolerances, if it is within the temperature range that the card is rated for.

2) It appears this card also supports some kind of daily calibration I am not too familiar with it but there is a document on it.

3) Resolution can be found in the specifications for the card.  It really depends on the selected range for the card.  It is a 24bit resolution, but the range can vary between +/-42.4V and +/-316mV.  This gives a resolution between 0.005mV and 0.00003mV.

 

All this information can be found in the two documents.

http://www.ni.com/pdf/manuals/373770j.pdf

http://www.ni.com/pdf/manuals/371234b.pdf

 

Which were both found at the product page under Resources.

http://sine.ni.com/nips/cds/view/p/lang/en/nid/202236