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measureMan
Newbie
Joined: 21 Mar 2007
Posts: 1
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 Posted: Wed Mar 21, 2007 2:42 pm Post subject: Galvanic Isolation and accuracy of 3000 series |
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I'm thinking of buying a 3204 scope and I got two questions :
1. is the ground/shield of the probes connected to the ground of the USB, or is there a galvanic isolation?
2. Is it right that in the highest accuracy of the scope (100mV/screen with 8-bit resolution) the smallest horizontal step corresponds to approx. 0.4 mV?
As an explanation : I want to use the scope for current measurement, by measuring the voltage drop over a shunt (0,2 Ohm). Therefore I need to make a differential measurement over the shunt (by connecting the shield of the probe to one side of the shunt). |
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ziko
Site Admin
Joined: 01 Dec 2006
Posts: 586
Location: St Neots
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| Posted: Mon Mar 26, 2007 2:40 pm Post subject: |
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Hi and thank you for your post.
1) Yes they are connected and not there is no isolation
2)No, the smallest resolution would be 0.8mV , you forgot the sign bit.
Hope this helps.
Kind regards |
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