Power Management for HVX200, Marshall Monitor, Cineporter
 

Here's my situation; I'll be shooting a feature length documentary this Fall and Spring. For run and gun situations I want to use a fig rig ( which I already have ). I've ordered the HVX200, and I already have the Marshall 70DP-HDA. I plan on getting the Cineporter 160 GB ( redundant RAID ).

I want to put the HVX / Cineporter and Marshall HDA on the fig rig with a carbon monopod. Because this will be a lot of weight already, I would like to figure out a way to possibly ( hopefully ) have a single battery pack that I could carry seperate from the fig rig as not to fatigue my arms any more than necesary. I have thought about rigging something to where I can carry the Cineporter seperate as well if the weight is too much for the fig rig.

So I would ideally like one battery source connected somehow to my body which then powers the HVX, Marshall, and Cineporter. This is a possible connection to HVX via Camera 7.2V DC converter ( http://www.dolgin.net/DCConverterPan.htm ). Can't quite see the out on this, but it could come loose :-(

There is also the Anton Bauer QR-DVXK ( http://www.bhphotovideo.com/bnh/cont...ughType=search ). Would power the HVX, but what about monitor and Cineporter?

There's the Bescor NMH-65A for the monitor ( http://www.bhphotovideo.com/bnh/cont...ughType=search ).

Again, ideally I would like one battery that would be able to split the power to the three devices: HVX, Marshall HDA, and Cineporter. Any suggestions would be greatly appreciated.

Brian, can you post the voltage and power requirements for the monitor and Cineporter?

Alex, the Marshall V-R70P-HDA runs 4 to 6 hours on optional 50WH battery, has a 4 pin XLR power jack, and a V-Mount battery adapter according to their website. It further states 10-17 VDC, 600 mA for power consumption ( http://www.lcdracks.com/monitors/vr70phda.html ).

The owner's manual states 14-10 VDC, 15 Watt nominal (3.0Amps max - UL Class 2 supply included) for power consumption ( http://www.lcdracks.com/monitors/pdf...UsersGuide.pdf ).

As far as the CinePorter, the only information on power states: Power
Hot-swappable, SCPAN-6000 6 Ah Battery (Included), 12V DC (Standard 4pin XLR) - http://www.spec-comm.com/cineporter.php.

I have been very close to buying your TC400. Could there in the future be an adapter plate for the V-mount batteries for your charger from DE?

Brian, As the camera uses 7.2V, and the monitor expects about 12V, you have to power them from two different sources. If you consider our DC Converter, it has a 2.1mm input jack in addition to the XLR input connector, they are both on the same circuit. You can connect your big 12V or 14V battery to the XLR input, and tap the same voltage using the 2.1mm jack to power the monitor. The converter 7.2V output would power the camera. In other words, you have one cable coming in from your battery into the converter, a short wire connecting the converter to the monitor, and another short wire connecting the camera to the converter 7.2V output. The Cineporter would probably be better off using its own batteries.
As far as your question regarding the V mount batteries, 7.2V batteries and 12-14V batteries are 2 different animals, different voltages, power requirements, etc. It is not practical to use the same charger for both.
HTH
Alex Dolgin

Thanks a lot; the light bulb went off in my head. I believe I have a better handle on what I need.

The more I think about it, maybe I'll try and rig something up for the CinePorter to carry it via a belt, etc, and connect to the HVX via a three or six foot cable.

Thanks again Alex.

Seems like the best way would be to use a 30/12 battery belt (get 2+) with a splitter and that converter mentioned above with the camera and monitor, and yeah-- run the Porter from the stock batteries.

So here is what I went with; I sent my Marshall off to get converted to use Panasonic batteries. Rob at Nebtek will do it for $210 but he recommends Panasonic brand batteries over 3rd party units- they apparently fit better in the clip.

http://www.nebtek.com/proddetail.php...lVR-70P-HDA-LI

Will be getting the Dolgin charger for the many Panny batteries.

Will see how the weight of the CinePorter affects Fig Rig; if too heavy, I'll get the three or six foot P2 cable and connect to belt or vest.

Thank you to everyone that put in input.

This is true. The issue is the contacts on some generic batteries are inserted a little deeper than they should. So they do not make reliable contact with the plate contact. Not all of the generics have this problem.

I really like the idea of having a belt for both the batteries and the Cineporter. When you get this rig figured out, I'll probably get the same setup... it just makes sense. Then I can go with the panasonic batteries and P2 cards for use on cranes/jibs/dollies.