Why 4 pins on a 12v Anton Bauer & Why 4 pin XLR for power?

[Lucas Adamson]

Well, that's the question...I am looking at what power connectors to put in my post and it seems 4-pin XLR is standard, but why 4 - what are they all? I am guessing 2 are for power and another 2 for Info-Lithium data, but that's a wild guess...

Thanks
Lucas

[Florian Bühler]

Yes, i think thats the reason.
2 +/- and 2 for information of the load

[Ed Liew]

pin 1 in the xlr connector is the negative line and pin 4 is the positive. 2 and 3 is not use. dunno why this is in use but since most equipment in the market uses this connectors i guess its a convience way to go.

[Lucas Adamson]

Yeah but it's a heavy way of doing things, isn't it.

I know that Anton Bauer can feed info to cameras through their mounts, so that battery life comes up on the camera monitor. Maybe that's what the other pins are for.

I'm going to find different connectors and make custom cables.

[martin boulianne]

Simple answer!!

the 2 pin Nutric or Canon plug is more expensive and less used by the fabricators...

second the 3 pin is the audio/mocrophone standard.

the 4 pin is used for camera power 12v more or less pin one ground pin 4 possitive 12v  if some of the older cameramen out their remember pin 2 and 3 on som cameras hed a secondary 6v sysetm used to drive the tally lights. ( this was back in the tube cameras Staticon, Plumicon.... pre 1980...)

[Don Brown]

The 4 pin XLR has been used in the Film Industry for 40 years the first camera I remember was a Eclair NPR which 1&4 was  power and 2&3 were the pilottone signal for the sound sync.
The Video industry just picked up on this as there was lots of 12v batteries avaliable wired to this standard
Most film cameras use Lemo or Fisher on the camera end but XLR battery end

Regards

Don

[Charles King]

The 4 pin XLR has been used in the Film Industry for 40 years the first camera I remember was a Eclair NPR which 1&4 was  power and 2&3 were the pilottone signal for the sound sync.
The Video industry just picked up on this as there was lots of 12v batteries avaliable wired to this standard
Most film cameras use Lemo or Fisher on the camera end but XLR battery end

Regards

Don

WOW!!! That long uh? Again, though it is still been used, especially with older equipment. Well, I guess Lemos and Hirose are taking over...  BTW Don, welcome to HBS.