Interesting point there. I seem to recall quite a few pullup/pulldown options in the Atmel port-configuration registers; this may just be a matter of selecting a mode that looks more like the resistor configuration Chuck mentioned.
Personally, I think it's fine if you support only 99% of the GPIB devices out there and leave the remaining 1% to the competition. Your boards have proven compatible with an incredibly-wide array of instruments at this point. If the 3478A problem can't be fixed in software, I think the best answer is, "Sorry, we don't support that one, here's a refund." It certainly isn't worth adding more chips (and cost) to the board IMHO. -- john, KE5FX > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Behalf Of Prologix > Sent: Wednesday, November 28, 2007 10:25 AM > To: 'Discussion of precise time and frequency measurement' > Subject: Re: [time-nuts] OT: Prologix GPIB and HP3478A...The Answer! > > > Hi Chuck, > > Good work identifying the problem! Leaving out the bus driver chips was a > conscious decision based on available board space and was not > made lightly. > Extensive testing had shown that not to be an issue, so far. In > fact, yours > is the first reported case of a drive related problem. However, > we consider > even one incident to be one too many, and will be revisiting the decision > during a future release. > > Thank you for brining this to our attention. > > Regards, > Abdul > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
