Products > Test Equipment

Decent benchtop multimeter for beginner?

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KungFuJosh:

--- Quote from: EEVblog on August 18, 2024, 10:52:39 pm ---But of course, not having a third meter or reference means if one of the two meters drifts, you don't know which one it is.

--- End quote ---

So I should buy a 3rd bench meter, and a calibrated reference. Fiiiiiiiiiine. Eventually. 😉

Fungus:
Here's my BM857 and Fluke 187 measuring the cheapo reference I got from China:


I know they're only 4.5 digit meters but I figure as long as they both agree to the last digit on a randomly-purchased reference then I'm good. No need to get a cal lab involved.

Looking at the prices of those references I think the chips must be second hand, so... they're probably well burnt-in.  :)

Aldo22:
A bit off-topic, but aren't we anyway?  ;)
I just found out that my very old USSR multimeter (1978) can do something that my modern DMMs cannot: It can measure AC voltage at 20kHz. Even at 100kHz it is still within 3dB.
In the picture it should show 1.77Vrms. The reading is about 1.78Vrms @20kHz sine (5Vpp).
My An870 is completely useless at 3kHz already.

So every little meter has its raison d'ĂȘtre.  :)

MiroS:

--- Quote from: Aldo22 on August 19, 2024, 10:19:04 am ---So every little meter has its raison d'ĂȘtre.  :)

--- End quote ---

They were sold on local market for 2-3 EUR some time ago. I think they all finished in trash.
AN270 is high-tech rocket comparing to 'that'. I do not think it is RMS mutimerer, most likely not at all.
USSR technology was modern in building tanks, prisons, spy factories, atom bombs terror,  poisons,
economical exploataion occupied countries,  but never in area of multimeters.
I would not touch this device, this plastic can be toxic, USSR did not care for such little things like heath.

Fungus:

--- Quote from: Aldo22 on August 19, 2024, 10:19:04 am ---A bit off-topic, but aren't we anyway?  ;)
I just found out that my very old USSR multimeter (1978) can do something that my modern DMMs cannot: It can measure AC voltage at 20kHz. Even at 100kHz it is still within 3dB.

--- End quote ---

Simple reason: Inertia.

The needle can't move that fast...  :)

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