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Since87 · 11-29-2003, 07:55 PM

Whinewood,

What experience do you have in using or generating engineering data?

Over a one year period, I probably look at an average of two technical datasheets per day. (Electronic components.)

I don't assume that the manufacturer is providing me with data that is biased to reflect positively on their product. I assume that the manufacturer is giving me the most accurate data they can. And, if they aren't certain about some aspect, (because they don't do 100% testing for example) that the data they provide is so conservative that I am extremely unlikely to actually see the worst case value for that spec.

This is generally a safe assumption. The reason why is that if a manufacturer is wrong about their spec and doesn't correct the problem quickly and thoroughly I will most likely not even look at a component from that manufacturer for years. I will also pass on my opinion of such a manufacturer to other engineers. No manufacturer selling to engineers can afford to produce products which do not perform as specified. There is no long term profit to be had in doing so.

My employer does not ship equipment (test instruments) unless it has half or less of the actual error of our published spec. And, what we ship will generally stay within our published spec for five times the specified calibration period. (Or much longer.) This is how manufacturer's earn the trust and respect of their customers.

Whinewood, your comments toward Bill and pHaestus WRT to bias in the technical data they produce, just shows how ignorant and/or stupid you are.

11-29-2003, 07:55 PM	#69
Since87 Pro/Guru - Uber Mod Join Date: Sep 2002 Location: Indiana Posts: 834	Whinewood, What experience do you have in using or generating engineering data? Over a one year period, I probably look at an average of two technical datasheets per day. (Electronic components.) I don't assume that the manufacturer is providing me with data that is biased to reflect positively on their product. I assume that the manufacturer is giving me the most accurate data they can. And, if they aren't certain about some aspect, (because they don't do 100% testing for example) that the data they provide is so conservative that I am extremely unlikely to actually see the worst case value for that spec. This is generally a safe assumption. The reason why is that if a manufacturer is wrong about their spec and doesn't correct the problem quickly and thoroughly I will most likely not even look at a component from that manufacturer for years. I will also pass on my opinion of such a manufacturer to other engineers. No manufacturer selling to engineers can afford to produce products which do not perform as specified. There is no long term profit to be had in doing so. My employer does not ship equipment (test instruments) unless it has half or less of the actual error of our published spec. And, what we ship will generally stay within our published spec for five times the specified calibration period. (Or much longer.) This is how manufacturer's earn the trust and respect of their customers. Whinewood, your comments toward Bill and pHaestus WRT to bias in the technical data they produce, just shows how ignorant and/or stupid you are.