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Powering BMPCC 4K & Besview R6 from one NPF Plate - Ground L

PostPosted: Sun May 04, 2025 5:56 pm
by keenny
Hi everyone,

I have a setup question regarding my BMPCC 4K and Besview R6 monitor.

Currently, I'm powering both devices using a single NPF-970 battery plate/adapter.

The plate's DC 12V/3A output goes to the BMPCC 4K.
The plate's DC 8V/3A output goes to the Besview R6 monitor.
Everything seems to be working fine right now. However, I have two main concerns:

Potential HDMI Ground Loop Issue: Is powering both the camera and the monitor (which are connected via HDMI) from the same power source (the NPF plate) likely to cause an HDMI ground loop feedback issue down the line? I'm worried this could potentially fry the HDMI port on my BMPCC 4K in the future, even though it works now. Has anyone experienced issues with similar setups?

Severely Bent HDMI Cable: I'm using an HDMI cable clamp on my camera cage for strain relief. However, this forces the HDMI cable into quite a sharp bend right at the connector going into the camera port. Could this severe bend cause any long-term problems, like signal degradation, damage to the cable internally, or even put stress on the camera's HDMI port itself?

Any advice, experiences, or potential solutions would be greatly appreciated! Thanks in advance.
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Re: Powering BMPCC 4K & Besview R6 from one NPF Plate - Grou

PostPosted: Wed May 07, 2025 7:53 pm
by Phil999
viewtopic.php?f=2&t=146590

Reply from Mark Forster:

"to prevent your HDMI port from being grilled, the following should be observed:

first plug ALL the POWER, and then the HDMI (or SDI for some models) connector
before you switched on the camera and the monitor

at the end, switch off camera and monitor and
unplug FIRST the HDMI (SDI), and at last the POWER connections.

if you change your battery, switch off and UNPLUG the HDMI (SDI) cable!
after that, the same procedure (if you have also disconnected the T-tap (P-tap)"

Regarding HDMI cables, I prefer thin cables.