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Re: [motm] chassis mount MTA-1564??

2001-04-01 by J. Larry Hendry

----- Original Message -----
From: <mark@...>
 I imagine the 900-PCB is a PCB with a
bunch of headers on it.  So I'm thinking
(I know, bad idea!! :) that I can mount the
900-PCB on the wood behind one of the
modules

--LH--
Mark, I have three of the PCBs in my metal rack.   The existing ones have 12
MTAs and also some push-on faston lug connections that are designed to be
the source.  You don't want to feed the PCB distribution board with # 18
wire.  You want to use something larger if possible between the PCB and
power supply.  I use # 14 stranded in all mine.

Personally, I don't see that mounting the PCB wood is a big deal.  At 15
volts, wood is a pretty good insulator.  At 15,000 it woudl be a bad idea.
However, when I mounted mine in my metal rack, I just went to Radio shack
and bough some of those shallow $3 project boxes with the screw-on lids,
just big enough to hold the PCBs.  I tossed the lod and mounted the PCBs in
these plastic boxes.  Worked out real nice.

--Mark--
and then build a cable with a MAT-1564
(AMP#640426-4, right??) on one end and whatever
on the other.

--LH--
Personally, I would not use the MAT-156 connector as the source to the PCB.
The PCBs are set up for a better source connection.  I can send you a photo
of one if you like.

--Mark--
I've been looking through the Digikey catalog for various options.
Switchcraft makes XLR's with more than 3 conductors, but they get a bit
pricey.  Considering that I don't need metal because there is no shield,
I'm wondering if there is something like a plastic Molex or Cinch-Jones
(like on a Mini-Moog) connector that is both chassis mountable and round.
Cutting small square holes or anything but a circle is difficult with the
tools I have, and I do not want to invest in a panel punch.

--LH--
Amphenol makes some real nice round connectors too.  However, they are
pricey also.  I would not consider Cinch-Jones for a power connector.  I
would prefer something that is locking.  The last thing you want is your
power supply cable popping out on you.

Larry H

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