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[Amps] SB-220 HV meter on zero

To: <>
Subject: [Amps] SB-220 HV meter on zero
From: "Jim Thomson" <>
Date: Fri, 4 Nov 2016 06:22:10 -0700
List-post: <">>
Date: Wed, 2 Nov 2016 19:40:21 +0000
From: Bill Turner <>
To: Amps group <>
Subject: Re: [Amps] SB-220 HV meter on zero
On Tue, 1 Nov 2016 18:26:15 -0400, Mike wrote:

> You can test the meter with a ohm meter. Disconnect one side and check for 
> continuity. Mike


Be careful with this. Some older ohm meters use very high current and
can damage sensitive meter movements. 

If you have any doubts, measure the current through the ohm meter
probes first and be sure it is less than the full scale of the meter
you want to measure. 

Don't ask how I found this out years ago.  :-)

73, Bill W6WRT

##  agreed if an old simpson VOM or heath VTVM used.   But if u use something 
like a 
Fluke 87,  it wont be an issue.   But clip one side of SB-220 meter...then  
quickly touch
the other side of the sb-220 meter.   If it doesnt peg, u are ok.   Most of 
these newer fluke DVMs
use extremely low  dcv  to measure current.  

Jim  VE7RF

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