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Search found 2 matches

by Hongya W
April 8th, 2017, 1:16 am
Forum: 7000 Series Switch
Topic: contact potential of 7012-S card
Replies: 3
Views: 12952

Re: contact potential of 7012-S card

Thank you Brian! Since you mentioned "Delta mode", I find some infomation about it on internet, "This current reversal technique cancels out any constant thermoelectric offsets, ensuring the results reflect the true value of the voltage." So delta mode can cancel constant offsets. I am not very fami...
by Hongya W
April 5th, 2017, 1:47 am
Forum: 7000 Series Switch
Topic: contact potential of 7012-S card
Replies: 3
Views: 12952

contact potential of 7012-S card

Hi, Our lab want to buy 7012-S matrix card for resistance measurement, and we still have some questions about it. 1. The contact potential of 7012-S is less than 500nV, I am wondering if it can be smaller when we apply AC current. I have noticed that the errors of low-level voltage measurement can b...

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