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From: <>
Date: Sun Feb 27 13:35:59 2005

The pull-up resistor (to VCC) should be 3.1KOhm (+/-5%)
while the pull-down (to signal ground) should be 6.2 KOhm.

Check both the NDAC and the NRFD.


PS Of course now that I checked the circiut diagram of the
82937A HP-IB Interface for the HP Series 80 computers, I see
that they have a 75162N bi-directional bus tranceiver connected
directly to the NRFD line (no resistors).
Received on Sun Feb 27 2005 - 13:35:59 GMT

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