Blackmagic Video Assist 7in 12G HDR power connection

Getting started with a Blackmagic product? Ask questions here about setup and installation.
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el_tnsnk

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  • Real Name: Elena Tanasenko

Blackmagic Video Assist 7in 12G HDR power connection

PostTue Sep 20, 2022 12:19 pm

I'm looking for a cable to power a Blackmagic Video Assist 7in 12G HDR from a Tilta Advanced Power Distribution Module.
Didn't find information which type of power connection Blackmagic Video Assist has - do I need a 2.5 or 2.1 mm DC connector on the cable?
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Dave Del Vecchio

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Re: Blackmagic Video Assist 7in 12G HDR power connection

PostThu Sep 22, 2022 1:34 pm

The Video Assist 12G uses a 2.5mm inner diameter (5.5mm outer diameter) locking DC power connector.

The standard power supply provides 12V @ 3A (36W), but according to this post the DC power input on the Video Assist will accept input voltage in the range of 10.8 to 17V: viewtopic.php?f=4&t=128511#p719148

Which means that you could probably power it directly from an unregulated D-tap output from a 14.4V or 14.8V lithium-ion battery as these have a maximum voltage when fully charged of around 16.8V. Or a regulated 12V power source would work as well.
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TheCalif

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Re: Blackmagic Video Assist 7in 12G HDR power connection

PostWed Jul 12, 2023 4:05 pm

Hello,
thanks, that was what I sought for.
Since the lower range is specified with 10.8V I think the camera can be powered with both 3S (11.1V or 4S (14.4V) LiFePo or similar batteries. Great for using RC model batteries.
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Howard Roll

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Re: Blackmagic Video Assist 7in 12G HDR power connection

PostWed Jul 12, 2023 11:26 pm

Using 11.1 v batteries is not a great idea. Over the course of use the voltage will drop. A fully charged V-mount may show 16v fully charged but this will drop to 12v as the charge is depleted. A battery that begins at 11.1v will rapidly become unusable as the voltage drops below the threshhold.

Good Luck

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