MOTM

I'll agree with John here.

I always short the test leads to make sure it zeroes out.

I think this was a necesssity with the older analog meters for reading ohms.
If I remember, there was actually a thumbwheel to adjust for zero.

Is it possible that the DVM's also require shorting to set to zero?

Mark T


-----Original Message-----
From: John Speth <johns@...>
To: 'motm@onelist.com' <motm@onelist.com>
Date: Monday, August 02, 1999 1:26 PM
Subject: RE: [motm] Hey, look at me, I'm a dumb-ass.


>From: John Speth <johns@...>
>
>I'll go out on a limb here and suggest that reading 27V on an unconnected
>very high impedance DVM is not unusual.  That might be what the potential
>is across the test leads, or at least what the DVM is measuring.  If it
>reads 27V when you short the leads together, then you have a problem!
>
>John Speth
>Object Engineering, Inc
>mailto:johns@...
>
>On Monday, August 02, 1999 9:45 AM, David Bivins
>[SMTP:david@...] wrote:
>> I just wonder for example, why my DVM reads 27 volts when it's set to
>Volts
>> DC and the probes are hanging, unconnected to anything? These are my
>> demons--the odd little things that aren't documented in books or
>instruction
>> manuals...
>
>
>
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