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From: "Dwayne Reid" <dwayner@planet.eon.net>
Sent: Thursday, July 08, 2010 5:15 PM
To: "Microcontroller discussion list - Public." <piclist@mit.edu>
Subject: Re: [EE]:: Datasheet frustration

> At 08:28 PM 7/7/2010, Oli Glaser wrote:
>>Essentially we are using one 4-pin XLR for 48V and 24V power input, and 4,
>>3-pin XLR (2 male, two female) for input/output signals, all PCB mounted.
>
> Hi there.
>
> Not sure if you have already decided upon a pinout for the 4-pin
> connector yet, but you may want to consider that standard 12V & 24V
> camera / lighting battery belts use 4-pin connectors with gnd on pin1
> & V+ on pin4.
>
> Just something to keep in mind.
>
> Question: what are you building?

It's a transformer balanced, all discrete, class A, mic preamp. The 24V is 
for operation and the 48V for phantom power, with probably power ground and 
signal ground for the other two pins. 


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