[Test-Equipment] Calibration for Radio Shack DVM

[Bill Abate]

Al,

I stumbled across this site:

http://support.radioshack.com/productinfo/DocumentResults.asp?sku_id=22-174&Name=Meters%20and%20Scopes&Reuse=N

I could not get there by doing a search from the RS home 
page.   I was able to get some info.  Seems they tell you 
everything but calibration.  One line says for service, 
bring it to a RS store.  No schematic.  So much for that.  I 
think I will just live with it and try to remember to do the 
subtraction.  Previous units I had were only off by 1 or 2 ohms.

Thanks for your suggestion.

73,

Bill, K3PGB

Al Parker wrote:
> Hi Bill,
>     It used to be (not toooo long ago) that RS had manuals for all their 
> stuff available online, free.  Often that incl the info yuou're looking 
> for.  Maybe still?
> good luck, 73,
> 
> Al, W8UT
> www.boatanchors.org
> www.hammarlund.info
> 
> "There is nothing -- absolutely nothing -- half so much
> worth doing as simply messing about in boats"
> Ratty, to Mole
> 
> On 9/7/2012 2:20 PM, Bill Abate wrote:
> 
>> Just got a used RS 22-174B to replaced my old one.  Really
>> like the unit despite being Radio Shack.  The ranges check
>> out fairly close to my standards except resistance.  Seems
>> like there is a 4 ohm error.  Not really significant but I
>> opened it up any way.  There are two pots inside, R70 and
>> R71.  I don't want to screw it up.  Anybody have schematic
>> or alignment procedure?
>>
>> Thanks,
>>
>> Bill, K3PGB
>>
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