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RED one 12V Aux lemos

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#1 Andy Johnson

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Posted 16 March 2011 - 09:59 PM

Hey guys,
I've been flying a red for a couple of jobs but I have to get to the bottom of this.
The 2x 12v AUX 4pin Lemos on the back of the body don't want to give enough juice to power accessories, I got a reading of only 3.75V. I spoke to some hire houses in the UK who assure me that they have powered accessories via these but I think they are getting confused and blagging it to say they work but the power is coming from the AB P-Taps. Anyway I spoke to RED Europe, helpful guys and I'm going to reset all the settings to see if I can get 12V to appear on this camera.
Has anyone experienced this or has a fix for this, is there something i'm missing in the GPIO menus?
Cheers guys,
Andy J
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#2 Michael Wilson

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Posted 16 March 2011 - 10:52 PM

This probably won't be much help but I have avoided those ports for powering anything because of what people have said about them being pretty flaky and not actually being able to power much of anything.
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#3 Markus Rave

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Posted 17 March 2011 - 06:48 AM

There are long threads about this issue on Reduser.net. Summing up it mostly says: do not use those power outlets. Instead have a p-Tap connector ready for the items you want to power and use that from the battery plate Red provides for the camera. I guess the outlets are not meant for drawing higher currents and since you probably not want to use the outlet for powering audio devices chances are you draw too much and damage the circuits of the camera. A Heden motor definetely draws more than the Red wants to give you :-)
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#4 James Davis

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Posted 17 March 2011 - 12:04 PM

Power straight from the Rig, it's the best option, what rig do you own, and what accessories are you trying to power?

As Markus said if you are using a wireless FF, with a powerful motor you are going to be using substantial amounts of current, also what batteries are you currently running on your rig?
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#5 RobVanGelder


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Posted 23 March 2011 - 04:04 AM

As a Steadicam operator working with increasingly more digital cameras I think it is necessary to read the manuals and specs from the cameras you are about to use....

Red clearly states that these accessory ports only handle a max of 1,5A each, which you quickly overload with many accessories....

When you measure only 3.75 volts, you already blew that electronic fuse, most likely. Result is that the camera has to be send back to Red.com, have a powerboard replaced @ $600 + 2 hours of work @ 100$ + shipping back and forth....

The bill of "just plugging in and see if it works" can easily reach over 1000$....

Just saying...
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#6 Jess Haas SOC

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Posted 23 March 2011 - 11:15 PM

Although anyone who designs a fuse that costs that much to replace is an idiot....
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#7 RobVanGelder


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Posted 23 March 2011 - 11:56 PM

Well, the people at Red.Com are not really idiots, I think.
It's because of them that we now quickly transfer into Digital 35mm.
Yes, Panavision was before them, but at such a price that it was not a real game changer at that time, mainly because of costs and associated issues with data and workflow..

On the other hand, Red's designs are not completely thought out from the beginning and this is one of the weak points....

Still, my opinion is that if I as a steadicam operator connects anything to any camera, be it a SR2 or a Sony-whatever-cam, I need to know if the connection might cause problems.
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