[sdiy] a cable with 50+ pin connectors ?

[Gene Stopp]

Not only will the "champ" connectors provide this, but with the right-angle
hoods they will look almost like the Korg PS3xxx cables too!

I seem to remember that 2 of the 50 pins were used for ground (the remaining
pins were for 24 twisted pairs) so you may need to look out for that if you
use off-the-shelf telco cables.

It's funny the difference in thinking between telco and datacomm. Telco is
full of funky numbers like 24 and 3 and 12 and 1544, whereas datacomm is
full of powers of two. For telco it's probably the same reason why time
units are 60, 12, and 24 - they are easily divisible by the low integers.

Best Regards,

- Gene


-----Original Message-----
From: Tom Arnold [mailto:xyzzy at sysabend.org]
Sent: Monday, May 05, 2003 1:43 PM
To: jhaible
Cc: diy
Subject: Re: [sdiy] a cable with 50+ pin connectors ?


On Mon, May 05, 2003 at 11:39:36AM +0200, jhaible wrote:
> Hi,
> 
> I'm looking for the best way to connect a keyboard with 49
> individual contacts to a synthesizer, so I need a cable with 50
> or more pins.

Amphenol cables. Commonly used for Telco work.  Really cheap surplus.
One nice thing is they are the latching connectors so they tend not to
fall out.  Common lengths will be 10 feet surplus tho. Might be too much.
I think someone else suggested using two DB25s.  Thats gonna be your
cheapest bet.  Just make sure you get 25pin Extension cables and not
printer or serial cables or they prolly wont have all 25 pins run and
at least a few will be connected strangely.  SCSI cables usually have some
grounds connected toegether so they probably wont work.

-- 
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