I actually have the H8571-B. I traced it out with a meter and found 5 connections, so
there should be some combo that works with the DB9-MMJ going to RS-232 on the other end,
I could see there being an issue with the MMJ-DB9 if there were more than 6 wires involved
that I would need the DE9, but since the B8571-B has MMJ coming out the other side, there
has to be a solution.
I would use the H8571-B on the vax bulkhead side, not the pc side. The pc side would have
Date: Tue, 24 Jul 2012 11:57:39 -0700
Subject: Re: Serial Connection for UVax II with H8571-B
From: glen.slick at gmail.com
To: cctalk at classiccmp.org
On Jul 24, 2012 11:36 AM, "Jochen Kunz" <jkunz at unixag-kl.fh-kl.de>
The MVII "bulkhead" uses a non-PeeCee DE9 RS232 pinout. So your MMJ-DE9
adapters can't work. Just solder a DE9-to-DE9 cable as described on
"chucks house of vax".
MMJ adapters work fine with the KA630/650/655 bulkhead panel DB9 connector
if you use the MMJ adapter that is specific for that purpose.
14.27 What connectors and wiring adapters are available?
H8575-B - Older MicroVAX (other than the MicroVAX 2000) DB9 EIA232 serial
port. Functionally similar to the H8571-B, though the H8575-B has better
ESD shielding. Note: Cannot be used on a PC, Alpha nor Integrity DB9 9-pin