Author Topic: HP 3468A no zero on resistance  (Read 1381 times)

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Offline truserTopic starter

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HP 3468A no zero on resistance
« on: January 12, 2019, 08:12:57 am »
HP 3468A  no zero on resistance
Where problem ?
https://www.youtube.com/watch?v=-GOzBPub7cU&feature=youtu.be
Thank's for help.
« Last Edit: January 12, 2019, 08:27:22 am by truser »
 

Offline say

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Re: HP 3468A no zero on resistance
« Reply #1 on: January 12, 2019, 03:13:32 pm »
 

Offline Specmaster

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Re: HP 3468A no zero on resistance
« Reply #2 on: January 12, 2019, 04:32:04 pm »
The thing with these meter is that they can only be calibrated in either 2 wire or 4 wire mode, usually which ever is the most likely to be used. I have a 3468A that was calibrated in 4 wire mode, in 4 wire mode I can get a reading of .001 \$\Omega\$ and .236 \$\Omega\$ in 2 wire.
Who let Murphy in?

Brymen-Fluke-HP-Thurlby-Thander-Tek-Extech-Black Star-GW-Avo-Kyoritsu-Amprobe-ITT-Robin-TTi
 

Offline truserTopic starter

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Re: HP 3468A no zero on resistance
« Reply #3 on: January 12, 2019, 05:10:39 pm »
it's all cool but anybody viewed my video, for start ?
 

Offline Specmaster

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Re: HP 3468A no zero on resistance
« Reply #4 on: January 12, 2019, 05:50:02 pm »
it's all cool but anybody viewed my video, for start ?
Yes I did, that's how I knew you was using the 4wire mode, and hence my reply. It looks like I said, yours has been calibrated for 2wire mode. Download a service manual for it and it will explain that it can only be optitimised in 1 mode only, the other mode be an approximate only in the low values.
Who let Murphy in?

Brymen-Fluke-HP-Thurlby-Thander-Tek-Extech-Black Star-GW-Avo-Kyoritsu-Amprobe-ITT-Robin-TTi
 


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