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Our tentative definition of Rework was neither mis-assembly nor Special Handling (called "Custom Modified Products" at Tektronix). Your reaction suggests to me that HP always fed changes straight into the production line, even if they were too small to justify a board spin - like replacing a part with a teepee, or cutting a trace and adding a wire. Chuck thought those little things were done afterward.

Dave Wise

PS: What is the meaning of the occasional Prefix whose week number exceeds 52?

-----Original Message-----
From: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...]
Sent: Thursday, October 05, 2017 11:18 PM
To: hp_agilent_equipment@...
Subject: RE: [hp_agilent_equipment] First four digits for year of HP stuff

Shorter Answers this time.



Manual Change Sheets (Inserts), should be in sync with the Current Engineering status for a particular Production Run, which means there may or may not be a change in Serial Prefix from the last one.

They could say “effective from a particular Prefix” or “effective from a complete Serial Number”. While it’s a pain sometimes keeping manuals up to date, there was really no practical alternative. The actual printing of Manuals

Was usually (maybe always) contracted out to Printing companies, so there would be a trade-off between Price and how many we bought at a time. I have seen cases where we might have bought a Year’s supply of a Manual, hopefully after a New product had settled down. That is why sometimes with a newly introduced product we would ship Preliminary Manuals which might not be up to the same material quality as Final Manuals.



With regard to “Rework”. My definition of Rework is “ You screwed something up the first time and now you’re doing it right the Second time.” I don’t think that’s what your meaning.



I think what your referring to is what we would call “Special Handling”. As well as an Instrument having a bunch of Data Sheeted Options (Opt 001,002 etc.), we would also produce customized options on request for Specific Customers. These would have a Letter in front of the Option No, say H50, H01 and some would have a different Letter which might be “C” or “J’. These Options would not go through the same extensive documentation and administrative processes as setting up a complete Instrument. Special Handling Department would normally have complete Engineering and Documentation responsibility for these products, with a few exceptions. Mostly we (Production Line) would be supplied with a Kit to make the modifications on the Production Line although sometimes a Production Line Instrument would be diverted to the Special Handling folks to do the job. Also the documentation would usually be an In-House produced Manual Supplement. That is why sometimes you may buy an old piece of Test Equipment and can’t find any documentation to describe an Option. The Manual Supplement has been lost, and you won’t be able to find the information On-Line.



Regards Bill Lauchlan