Products > Test Equipment
DMMCheck Plus Multimeter Reference(and other References) - Experiences..
Fungus:
--- Quote from: Electro Fan on July 04, 2023, 01:13:31 am ---Having said all that, Doug is a good guy making good products, so I'd say if in doubt but you can afford it, go for it. :)
--- End quote ---
Yep. Doug will obviously give you a garantee, etc.
iMo:
First step when buying such a reference box is to look at its schematics. While doing so you'll get what the parameters really are. Most notably the reference chip and the resistors around the reference are the key.
KungFuJosh:
--- Quote from: Fungus on July 04, 2023, 06:13:00 am ---The hardware in those devices seems OK, it's the calibration where some sellers are cutting corners.
--- End quote ---
100% - and that's the most important part. None of them are that expensive, but buy the time you buy them all to find one that's accurately calibrated and labeled, you might as well buy something nicer. I did read reviews, but people are often clueless, or fake.
Fungus:
--- Quote from: KungFuJosh on July 04, 2023, 03:05:48 pm ---
--- Quote from: Fungus on July 04, 2023, 06:13:00 am ---The hardware in those devices seems OK, it's the calibration where some sellers are cutting corners.
--- End quote ---
100% - and that's the most important part. None of them are that expensive, but buy the time you buy them all to find one that's accurately calibrated and labeled, you might as well buy something nicer.
--- End quote ---
Seems like a business opportunity for somebody with a decent DMM. Buy them cheap, calibrate them, sell them a bit more expensive. :popcorn:
Martin72:
Calibration is a kind of "official" confirmation that a meter is in it´s own specs.
If you have a cheap meter with lousy specs calibrated, you have official confirmation that the meter is lousy.
Great...
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