Author Topic: Testing a multimeter  (Read 2482 times)

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Offline Bigknobby

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Testing a multimeter
« on: December 30, 2015, 02:48:50 pm »
Thanks in advance for the help. I have an old Craftsman digital multimeter and suspect it might not be working properly, how do I test all the functions of the meter to determine if it is working. Thanks again.
 

Offline Simon

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Re: Testing a multimeter
« Reply #1 on: December 30, 2015, 03:13:13 pm »
well most multimters convert any measurement into voltage, so your best bet is to start testing the voltage reference. Do you have a fairly accurate reference to start with ? how accurate do you need to be ?
https://www.simonselectronics.co.uk/shop
Varied stock of test instruments and components including EEVblog gear and Wurth Elektronik Books.
Also, if you want to get ripped off: https://www.ebay.co.uk/usr/simons_electronics?_trksid=p2047675.l2559
 

Offline Bigknobby

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Re: Testing a multimeter
« Reply #2 on: December 30, 2015, 03:30:48 pm »
The meter is a Craftsman 82309 (I don't have a manual, and can't seem to find one on the internet).  When I use it to test AC/DC volts (110VAC source/12VDC source) the readings seem to be accurate. With impedance selected, I just get a "0" displayed regardless of what I check.  The other settings I don't know how to use (lack of knowledge and a manual).
 

Offline Simon

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Re: Testing a multimeter
« Reply #3 on: December 30, 2015, 04:09:44 pm »
sounds like the ohms side of things may be damaged
https://www.simonselectronics.co.uk/shop
Varied stock of test instruments and components including EEVblog gear and Wurth Elektronik Books.
Also, if you want to get ripped off: https://www.ebay.co.uk/usr/simons_electronics?_trksid=p2047675.l2559
 

Offline Bigknobby

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Re: Testing a multimeter
« Reply #4 on: December 30, 2015, 07:29:45 pm »
Thanks for the help.  Do you have a good source for learning to use all the functions of my multimeter.  I attached a photo of it.
 

Offline nanofrog

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Re: Testing a multimeter
« Reply #5 on: December 30, 2015, 08:36:28 pm »
Thanks for the help.  Do you have a good source for learning to use all the functions of my multimeter.  I attached a photo of it.
Type in "how to use a multimeter" in a search engine, and you'll get a lot of stuff come up.

Sorting through the good and bad can be a bear, so here's a starting point (from Marton Lorton, aka mjlorton).  ;D



Follow the links to the others in the series he made (2 on current and 1 on resistance and continuity). He's also made an advanced series of videos on diodes and such that will also be of interest.  ;)

Other members have made videos, such as w2aew, might be of interest as well (link = his youtube page).  8)
 


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