David Kirkby wrote:
I know know the S/N of this unit, although I don't have it yet. The S/N of the 5370B is 2904A02491. If anyone is able to determine the date (and/or part number) of the manual that will cover this S/N, I would like to know.
Hi David --
The first four digits of an HP serial number tell you the revision level -- the first two numbers plus 60 are the year (ie, 29 is 1989, quite late for a 5370),
That is good to know. I assume there are less bugs in the late versions.
while the last two digits are either the week or a series number, I'm not sure which. These digits only guarantee that your unit was built after that date, but they are a good guide to relative lateness.
Cheers.
HP manual changes are keyed to that four-digit series. Usually, new manual editions come out fairly infrequently, and they include change pages showing all the series changes up to the version shown in the manual. But in reality, the changes are generally pretty small and I usually don't worry much about matching up the series number unless I have serious repair work in front of me.
Someone did send me an email, saying he felt it was more important on this particular instrument than normal to get the manual matching the serial number, as there were significant changes. He did need to do some repair work and found the changes very important. Given the age of this equipment, and (unlike modern stuff) you have some hope of being able to repair it, getting the latest information seems wise, if it is possible.
-- Dr. David Kirkby, G8WRB
Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk/
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