HP-1000 HP-IB / GP-IB IEEE-488.2, etc

J. David Bryan jdbryan at acm.org
Tue Apr 8 18:33:10 CDT 2008

On 8 Apr 2008 at 16:36, Steve Robertson wrote:

> The hood is marked 59310-60008 and there's a good sized ferrite bead on
> each end... and... there's a grounding lug on the computer end of the
> cable. Are you saying this cable is inferior for disk access to the the
> 12821A cable?

The HP 1000 M/E/F-Series Computer Interfaces Technical Data catalog (5953-
2833, April 1982) lists the 59310-60002 cable for both the 12821A and 
59310B interface cards.

The HP 1000/9000 Interface Products Specification Guide (5954-6312, August 
1985) lists the 59310-60008 cable for both cards.  There's also a 59310-
60006 cable available (2 meters vs. 3.69 meters for the -60008 cable).

It appears that either cable can be used with either card.  I speculate 
that the -60008 cable was needed to meet then-new RFI emission 
requirements.  Many HP cables in the '80s sprouted ferrite slugs, 
additional shielding, and ground straps where none had been before.

                                      -- Dave

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