[Konvas] Kinor 35 Batteries

[Bruce McNaughton]

Interestingly some parts of Europe use 3 pin XLR/XLP connectors for  
powering cameras.  Anders Bank's equipment is always supplied with 3  
pin Cannons...

Dangerous.

Regards
Bruce
The aranda group
Melbourne
http://www.arandafilm.com.au






On 22 Feb 2009, at 13:10, Rick Garbutt wrote:

>
>>
>>> on behalf of Brandon Esten
>>
>> Ok, so I have a noooob question here. Why 4-pin XLR for power  
>> cables? It's
>> obviously industry standard, but why?
>>
>
> It's not a silly question at all.  The way it was explained to me:
>
> 1  negative; ground 12VDC
> 2  pilotone/rangertone
> 3  remote start - bypasses switch on camera body
> 4  positive  12VDC
>
> Why 1 & 4 for power?  Farthest away from each other in the  
> connector, thus
> least likely to short when it's abused (and it will be!).  Note the  
> cute
> "clues":
>
> 1 is a - or negative sign turned on its side/end
> 4 is a ... well, if you look reeeeeeeeeeeeeeally hard, you'll see a  
> + in the
> very shape of the number itself.
>
> And Lael's right on:  ya don't want to never, EVER connect your 4- 
> pin to a
> 3-pin.  If it's audio, you can mess things up real good; if it's 3-pin
> power, THAT has become the standard for 24V, and you don't want no  
> 24V on
> your 12V control circuitry.  Odds are you may even burn out some  
> brushes on
> a stupid 12VDC brush motor.
>
> This DOES happen if you put 12V onto the old Arri governor- 
> controlled 9VDC
> motor for the 16S/ST/M ...
>
> Best to all
> Rick Garbutt, soc
>
>
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