[sdiy] External power connectors

[David Cornutt]

On Dec 3, 2004, at 5:59 AM, Peter Swarbrick wrote:

> There is no standard for using pins 2 +3 : sometimes they are 
> paralleled( ie
> 1+2= 0v /3+4= +12v ) for heavy current applications and  battery packs 
> and
> their chargers will often use one or both of these pins for charging 
> input /
> temperature monitoring etc.
>
Back in the day, I thought it was fairly standard to use these
pins for the "tally" power; that is, the power that turns on the
big red light on the camera that is on-air at the moment.  Do
modern studio cams even have these?

Also, wasn't it 24V?  Have I really been away from the video
industry that long?