the question was asked here a few years ago but not answered. so i'll try again:
what is the difference between the two versions 82169A and 82169C of the hp-il/hp-ib interface?
thank you for your help!
hans
hp-il/hp-ib interface 82169A vs. C
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07-10-2012, 03:18 PM
the question was asked here a few years ago but not answered. so i'll try again: what is the difference between the two versions 82169A and 82169C of the hp-il/hp-ib interface?
thank you for your help!
07-10-2012, 05:02 PM
Hello,
only a guess, but maybe it's a similar difference as with the HP 82163A vs. B video interfaces.
The actual differences are an internal resistor bridge soldered in a different HTH Ray
07-11-2012, 11:43 AM
many thanks, ray and kerem! heureusement, je n'ai pas dormi pendant les lessons de français, at least not all the time... hans
07-11-2012, 01:18 PM
The photos of the 82169C look exactly like a normal 82169A. So far we still don't know what functional differences, if any, exist between the normal "A" and "C" variants. The photos of the 82169A option 001 (19255-60500) are the ones that are unusual. A normal 82169A has a masked-ROM microcontroller, just like the photos of the 82169C. It would be great to get a better closeup view of the microcontroller with the piggyback EPROM, to see the markings on the microcontroller clearly, and a dump of the EPROM. According to the almighty Google, the 19255-60500 (82169A option 001) is be part of an HP 5890 Series II gas chromatograph. It is unclear why a gas chromatograph would need nonstandard 82169 firmware.
07-12-2012, 03:28 PM
Here is a detailled view of the micro:
It could be possible for me to read the EPROM, but I don't think it would learn us anything, without a reference to compare to. |
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