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Unread 30-01-2015, 13:37
philso philso is offline
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Re: ground isolation on VRM and PCM

Quote:
Originally Posted by phestnes View Post
Measuring the voltage difference won't actually tell you if the grounds are connected or not - only that the grounds are at about the same voltage reference.
This is correct.


Quote:
Originally Posted by phestnes View Post
Depending on the multimeter that you use, you may actually be shorting the ground together with the probes - which would show not voltage differential.
What type of multimeter do you have that does this?


Quote:
Originally Posted by phestnes View Post
I'm actually looking for a resistance measurement between the input ground connection and any/all output ground connections. Mine are reading in the MOhm range....
Do you mean megOhm (1,000,000 Ohm) or milliohm (0.001 Ohm) when you write "MOhm"? I can check on our parts when I go to our build site this evening.