HP7475 driver needed

From: Tothwolf <tothwolf_at_concentric.net>
Date: Thu Jan 31 14:54:50 2002

On Thu, 31 Jan 2002, Tony Duell wrote:

> Talking of 7475s. I have what appears to be an IBM-badged HP7475 on the
> bench at the moment. It's got an HPIB interface (labelled IEEE488, BTW).
> I don't know if the firmware is the standard HP stuff or not -- the ROMs
> have HP 1818-xxxx numbers but that doesn't mean much.
> Can anyone remember how to run a 'confidence test' on the 7475? Pressing
> 2 buttons at once, and holding down a button while powering up doesn't
> seem to do it. Nor does setting the HPIB address to 31 (normally illegal,
> of course).
> If I can attempt to run the test I can see (a) if the ROMs are certainly
> different (if it doesn't run the test at all) and (b) if there's still a
> 'Hewlett Packard' or 'HP' on the test plot.

IIRC, mine had some sort of menu option for some internal tests, but I
don't recall a plot test. I did basic plot tests on my plotters from the

Received on Thu Jan 31 2002 - 14:54:50 GMT

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