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Product Teardowns and EOS/ESD

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Mechatrommer:
i understand John's point since his Arizona is the place where all the floating electrons gather and do the party. and the rest of the globe maybe dont have a clear idea about that.

EEVblog:

--- Quote from: JohnS_AZ on May 21, 2011, 05:15:24 pm ---Professionally, however, I stand by my comments and respectfully disagree.

--- End quote ---

I would agree with you, hence why I've done a blog on ESD, and will probably do more on the proper implementation of ESD.
However, this isn't a professional scenario where I am trying my best not to damage the product. It's a review, where I'm actually doing the opposite and TRYING to fault the product under question, using what I think is quite a realistic user scenario.

Dave.

EEVblog:

--- Quote from: stl on May 21, 2011, 05:12:15 pm ---People are "shocked" because not wearing a wristband is politically incorrect

--- End quote ---

And of course politically incorrect is what I do so well! ;D

I agree with everyone's comments about proper ESD protection 100%, it's just that they don't seem to "get it" when it comes to this unique review type situation. They are just blanket applying their learned "not using an ESD strap is bad" mentality without considering what is trying to be achieved here.

Just look at the fault in the new Agilent meter that seems to be caused by a dicky range switch and firmware (see new video from Satuation now embedded in the blog post). People can argue that it's not realistic to expect the meter not to lock up when the meter switch is held half way between ranges. But well, it is indicative of a major problem and must be fixed. Could be the same if a meter PCB died due to basic handling without an ESD strap IMO.

Dave.

the_raptor:

--- Quote from: EEVblog on May 22, 2011, 02:35:23 am --- People can argue that it's not realistic to expect the meter not to lock up when the meter switch is held half way between ranges.
--- End quote ---

Well it isn't realistic. However the meter ISN'T locking up it is giving out random/uncalibrated readings, which is unacceptable of equipment designed to measure lethal levels of electricity.

In general engineering practice it is never acceptable for a device to get into an unknown state due to not verifying user input. The meter is not failing SAFE.

This is similar to that other meter you reviewed dave that was giving wonky readings when low on battery and had to be recalled.

EEVblog:

--- Quote from: the_raptor on May 22, 2011, 04:33:27 am ---Well it isn't realistic. However the meter ISN'T locking up it is giving out random/uncalibrated readings, which is unacceptable of equipment designed to measure lethal levels of electricity.

--- End quote ---

It did lock up as well, you can see that in my video.
I'm sure you can get the thing to whistle dixie if you fiddle with it enough. The meter has some serious problems.

Dave.

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