Products > Test Equipment
Brymen firmware updates and changelogs
TomKatt:
I suspect there's a lot more error-checking to verify your car's fw has been properly updated compared to what a little micro in a DMM is capable of, though I'm sure it could be done with checksums or the like.
But - at least in the litigious US - I can imagine lawsuits filed the first time the probe jack insertion warning fails and someone is traumatized by a fuse blowing because they probed live voltage in a current mode...
All that said, I would like the option myself. And it makes you appreciate all the vintage gear with ROM chips where the manufacturer had ONE chance to get it right (exemplified by the Atari 2600 version of E.T. :-DD)
joeqsmith:
--- Quote from: TomKatt on February 07, 2023, 04:22:52 pm ---I suspect there's a lot more error-checking to verify your car's fw has been properly updated compared to what a little micro in a DMM is capable of, though I'm sure it could be done with checksums or the like.
But - at least in the litigious US - I can imagine lawsuits filed the first time the probe jack insertion warning fails and someone is traumatized by a fuse blowing because they probed live voltage in a current mode...
All that said, I would like the option myself. And it makes you appreciate all the vintage gear with ROM chips where the manufacturer had ONE chance to get it right (exemplified by the Atari 2600 version of E.T. :-DD)
--- End quote ---
Coming from an automotive background many many many years ago, we started out using a lot of masked parts. You write your code, you send the code to Motorola, Motorola sends you parts that you verify. Then you order your 50,000 parts for your prototype run. Better have your shit together. Worked with an idiot who was getting ready to place an order. I ended up going through their code line by line and found a major bug. Saved their job but were they pissed. How dare you question my code sort of thing. :-DD
By the time I changed my career we were looking at tools to automate the code generation and having 100% code coverage. Basically following aviation. I have no idea where things are today.
tomud:
--- Quote from: NoisyBoy on February 07, 2023, 03:42:04 pm ---Not sure if that’s the real reason, as many other test equipment and DMM makers, including all the A brands, allows user update if there’s provision for it.
--- End quote ---
Yes, it is implemented when the processor gives such possibilities, e.g. it has the ability to implement a bootloader, then the firmware is encrypted, etc.
I have not seen any manufacturer of multimeters that allows you to change the firmware by, for example, connecting directly to the processor (ISP), etc.
I don't know what "A" brands you're talking about but I had both Fluke and Keysight handheld multimeters and they didn't have the upgrade option. The only equipment that allows this is some laboratory multimeters and the aforementioned Fluke 287/289 multimeters.
NoisyBoy:
Hence I emphasized “if there’s provision for it”
I also agreed that very few handheld DMM is firmware upgradable, and the lack of competition might have driven Brymen’s decision.
BTW, some Keysight handheld, like Fluke, is upgradable through the IR-USB cable.
I like Brymen, no issue with their meter, all I am saying is they could make it more appealing, to me at least, if they are user updatable.
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