Products > Test Equipment
Decent benchtop multimeter for beginner?
bdunham7:
--- Quote from: KungFuJosh on August 18, 2024, 12:15:59 am ---Tomorrow I'll test both from cold start. Or should I warm up the ref first, to separate that? It makes sense to me to warm up the ref first remove the ref's drift from the test.
--- End quote ---
Ideally you'd do it both ways--with the ref warmed up and meter cold then vice versa. But try it the first way first. IDK what I'd do if I had to shut my power off nightly--I have multiple references and instruments that stay on for months on end. I may have missed it if you said earlier, but what is your reference?
skander36:
--- Quote from: KungFuJosh on August 17, 2024, 11:42:32 pm ---
That's what I correctly assumed, an 8.5 digit meter. That number also has to take into account temperature and humidity. Did you when you tested your 3 meters? You will never match that number otherwise.
Your results are BS if you wanted to test or compare anything besides cold start drift. It's simply not accurate to claim you have a problem based on cold start. That's not an opinion or an assumption. Every device requires warmup time to meet specs.
I'm not saying the Siglent isn't inferior to the other two meters. I would love to have a DMM6500 if I could afford it. That doesn't make my Siglent a piece of crap; it's just not as nice as the meter that costs twice as much. I'm not shocked by that.
--- End quote ---
Actually you said that
--- Quote from: KungFuJosh on August 17, 2024, 04:09:56 pm ---
...
I don't agree, and I won't assume anything, because the stated value of the reference is very likely BS.
--- End quote ---
I proved that the referece value is not BS.
The other meters can provide a trusty reading no mater the conditions, while the Siglent not. This is the idea.
tautech:
--- Quote from: skander36 on August 18, 2024, 08:34:26 am ---
--- Quote from: KungFuJosh on August 17, 2024, 11:42:32 pm ---
That's what I correctly assumed, an 8.5 digit meter. That number also has to take into account temperature and humidity. Did you when you tested your 3 meters? You will never match that number otherwise.
Your results are BS if you wanted to test or compare anything besides cold start drift. It's simply not accurate to claim you have a problem based on cold start. That's not an opinion or an assumption. Every device requires warmup time to meet specs.
I'm not saying the Siglent isn't inferior to the other two meters. I would love to have a DMM6500 if I could afford it. That doesn't make my Siglent a piece of crap; it's just not as nice as the meter that costs twice as much. I'm not shocked by that.
--- End quote ---
Actually you said that
--- Quote from: KungFuJosh on August 17, 2024, 04:09:56 pm ---
...
I don't agree, and I won't assume anything, because the stated value of the reference is very likely BS.
--- End quote ---
I proved that the referece value is not BS.
The other meters can provide a trusty reading no mater the conditions, while the my Siglent not. This is the idea.
--- End quote ---
FTFY
I have no idea why yours seems to be a problem child and even though you've had it recently checked it drifts outta spec. :-//
2N3055:
--- Quote from: skander36 on August 18, 2024, 08:34:26 am ---...The other meters can provide a trusty reading no mater the conditions.....
--- End quote ---
I presume what you wanted to say, but this statement is highly doubtful..
I'm sure I could provide conditions to make them show numbers highly different from what you expect...
KungFuJosh:
--- Quote from: bdunham7 on August 18, 2024, 04:30:42 am ---Ideally you'd do it both ways--with the ref warmed up and meter cold then vice versa. But try it the first way first. IDK what I'd do if I had to shut my power off nightly--I have multiple references and instruments that stay on for months on end. I may have missed it if you said earlier, but what is your reference?
--- End quote ---
I attached a photo from the aliexpress listing for the ref I have. The stated values are (surprisingly) not the same as the piece of paper that came with mine. 😉
I have the ref warming up now, I'll turn on the meter soon and do the cold start test.
If I had solar I might leave stuff on, but my electric bills are already way too high as it is.
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