Hi Joe,
BM235 & BM869s firmware are with following reading smooth designs.
BM869s
After getting NEW measuring reading, check “NEW reading” and “the AVERAGE of the last 8 readings”.
If ABS ( “NEW reading” - “the AVERAGE of the last 8 readings”) > 8 counts, then display “NEW reading” directly.
If ABS ( “NEW reading” - “the AVERAGE of the last 8 readings”) <= 8 counts, then display “the AVERAGE of the last 8 readings” instead.
BM235
After getting NEW measuring reading, check “NEW reading” and “the AVERAGE of the last 16 readings”.
If ABS ( “NEW reading” - “the AVERAGE of the last 16 readings”) > 16 counts, then display “NEW reading” directly.
If ABS ( “NEW reading” - “the AVERAGE of the last 16 readings”) <= 16 counts, then display “the AVERAGE of the last 16 readings” instead.
They are the causes.
Hi Joe,
I had two wrong info. Please see red corrections below.
Best Regards,
BM869s
After getting NEW measuring reading, check “NEW reading” and “the AVERAGE of the last 8 readings”.
If ABS ( “NEW reading” - “the AVERAGE of the last 8 readings”) > 16 counts, then display “NEW reading” directly.
If ABS ( “NEW reading” - “the AVERAGE of the last 8 readings”) <= 16 counts, then display “the AVERAGE of the last 8 readings” instead.
I did write Brymen about the long settling times and provided them a link to the video. Here is their response:QuoteHi Joe,
BM235 & BM869s firmware are with following reading smooth designs.
BM869s
After getting NEW measuring reading, check “NEW reading” and “the AVERAGE of the last 8 readings”.
If ABS ( “NEW reading” - “the AVERAGE of the last 8 readings”) > 8 counts, then display “NEW reading” directly.
If ABS ( “NEW reading” - “the AVERAGE of the last 8 readings”) <= 8 counts, then display “the AVERAGE of the last 8 readings” instead.
BM235
After getting NEW measuring reading, check “NEW reading” and “the AVERAGE of the last 16 readings”.
If ABS ( “NEW reading” - “the AVERAGE of the last 16 readings”) > 16 counts, then display “NEW reading” directly.
If ABS ( “NEW reading” - “the AVERAGE of the last 16 readings”) <= 16 counts, then display “the AVERAGE of the last 16 readings” instead.
They are the causes.
Why do they even make meters that require shitty rubbish penlight batteries? They leak often, where as that's usually not the case with 9 volt batteries...
Why do they even make meters that require shitty rubbish penlight batteries? They leak often, where as that's usually not the case with 9 volt batteries...Good question, I must admit I've found a number of leaking Duracell batteries lately in low power long life devices. It's quite concerning considering up till 6 months ago I'd never had issues with them.
I did write Brymen about the long settling times and provided them a link to the video. Here is their response:Quote[...]Cool, I've added that detail to the manual.
I must say I love my little Brymen 235. Until watching EEVBlog I had never heard of Brymen and I'm very surprised at the quality. I've got the 235 and a 869s now, I really like both of them. The silicon meter probes are superb, I've even ordered some spare ones for my fluke meters.
I must say I love my little Brymen 235. Until watching EEVBlog I had never heard of Brymen and I'm very surprised at the quality. The silicon meter probes are superb, I've even ordered some spare ones for my fluke meters.
Welcome to the site. I'm in the same boat. I never heard of Brymen until a few years ago and also have the BM869s. It gets a lot of use on the bench and it's my favorite meter by far.
PS Averaging does not make the result more precise unless the meter has internal noise/jitter needing averaging, but it does not seem to be any more precise with averaging. It does help agains digit flickering, which is quite desirable and I don't mind the presence of the functionality. I like the values chosen for the 869s better though, and I'd have chosen the values for the 235 lower rather than higher to compensate for the lower resolution. Right now the 235 is powerless agains a multi-turn trimmer.
Why do they even make meters that require shitty rubbish penlight batteries? They leak often, where as that's usually not the case with 9 volt batteries...Good question, I must admit I've found a number of leaking Duracell batteries lately in low power long life devices. It's quite concerning considering up till 6 months ago I'd never had issues with them.This seems to be a recent quality issue with Duracell batteries. I always regarded Duracell very highly, but their quality seems to have eroded. There is a video of bigclivedotcom showing 1) cheap alkalines outlasting them and 2) one of the types providing very inconsistent capacities. I usually recommend Varta's, but I have very little personal experience with capacity issues or leaking, so this is more to never having had a specific issue with them and it being a tracable brand. My thought would be that 9V would be just as prone to failure as other types.
PS Averaging does not make the result more precise unless the meter has internal noise/jitter needing averaging, but it does not seem to be any more precise with averaging. It does help agains digit flickering, which is quite desirable and I don't mind the presence of the functionality. I like the values chosen for the 869s better though, and I'd have chosen the values for the 235 lower rather than higher to compensate for the lower resolution. Right now the 235 is powerless agains a multi-turn trimmer.I think the logic here is that if you have a signal with a given amount of noise, the higher resolution meter will detect a significant change more often, so you want to average fewer points to retain more precision.
[...]
Possibly this is not considered worthwhile because most applications requiring analysis of the signal quality would push the user to a 'scope, but it seems there is a gap in the market between 'standard' meters and data acquisition devices (or 'scopes used for that purpose).
I purchased it from Amazon. Getting it on Amazon, does Dave still make a few bucks on my purchase?
Duracell batteries are absolute shit now. Here's one that isn't even dead!
Warren Buffett Berkshire Hathaway bought Procter & Gamble Co’s Duracell battery unit and lately they are cheap garbage.
Anyhow, Eneloops are great I love them.