Is it a fair teat to connect several meters together in ohms mode and drawing conclusions from how they behave? Several meters trying to push sequences of various currents and interpreting the resulting voltage. Chaos. Might work ok with shorted probes, but still...
That was my initial reaction when I first saw that sort of setup - but I think the answer is that it can only work with shorted probes.
I thought the same.
I am not sure it is in the video, I printed out the spec pages of all multimeters (I had them on right side of the desk) and on manual of DT4282 had the current for every ohm range used, and TY720 had the maximum current could be used for every ohm range. All of the currents were different.
I worried first of damaging the multimeters by current flowing from other multimeters when connecting together.
My brain still only has analog meter age and it might stress the battery inside.
( Then I thought if digital multimeter was so fragile, it would not survive joe's robustness test. )
And the shorting the probe all the current from all meters of all ranges could be the same behavior even for the individually shorting the probe.
End up connecting all multmeters together. I am too lazy to make some jig for taking video.
My thoughts on the difference in speed for the readings in addition to what others mentioned.
Despite them all being 50k count meters, you will notice they have different levels of resolution for the resistance mode. Not all 50K or even 60K meters offer high resolution in resistance.
So I was wondering if the meters that show a higher resolution could be the reason for a slightly longer time. This gets tricky, because if you manually set the 121GW to display the same resolution as the others it might have an advantage also not having to auto detect the range of the resistance. I guess either way you run it, it still won’t be exactly a far comparison? Then again you could say the 121GW took a little longer because it’s factoring in a higher resolution of resistance to display even in Auto range.
I think even my Fluke 289 60K count meter shows lower resolution then the 121GW does in resistance.
But it shows the point you were demonstrating, the average speed of the auto range detection.
I would be interesting to see how the 121GW stands against a bench meter that you can set to display the same resolution and still use auto ranging. Maybe something like a much older HP 34401A in two wire mode?
Joe, don’t you own a HP 34401A? I would try this, but I’m missing the 121GW and still waiting.
I know you have a preproduction 121GW, not sure how or if the firmware updates work on your version or if you tried to update it?
Hopefully it comes soon before I move, I figured after the Kickstarter address update request it was going to be just days away before getting a tracking number. It’s getting so close to the dates I’m looking to sell my house I might have to ask for a refund and forgo the idea of reviewing it despite being in the Great Scott group. Even if I get it before I sell my lab might be packed up by then so I wouldn’t be able to do any videos anyway.