Changing wire-wrap configurations on DEC circuit boards
jsw at ieee.org
Mon Feb 13 20:33:47 CST 2017
> On Feb 13, 2017, at 7:29 PM, allison <ajp166 at verizon.net> wrote:
> On 02/13/2017 06:45 PM, Earl Evans wrote:
>> Hi there,
>> I've got a couple of DEC QBUS boards (including a quad SLU) for which
>> configuration is set by wire-wrap jumpers. I don't have a wire-wrap tool,
>> and have found that trying this by hand without one is not workable.
>> Has anyone come up with a clever way to permit reconfiguration of these
>> boards without semi-permanent changes? Or, alternatively, what wire-wrap
>> tool would you recommend?
>> - Earl
> I use wirewrap as the spacing and distance between boards does not
> permit anything else.
> OK too makes a good simple hand tool and more elaborate ones as needed.
> Its worth the
> tool even if you go with the simple hand tool that looks sorta like a
> Keep in mind with Qbus unless you insert grant cards you can't double
> space boards.
> I only have 8 Qbus systems from LSI-11 through MicroVAX.
There are two common types of wirewrap - Regular and Modified.
The “modified” wirewrap tool leaves an insulated turn at the start of
the wrap. It’s my preference when wire-wrapping 30 gauge or
if you run the wires off board. Suggest 24 or 26 gauge for the latter.
Make sure you match the wire and tool.
More information about the cctech