Wed Jun 19, 2019 4:39 pm
I use a BMD battery plate on the Ursa Broadcast (same body/power supply as a Ursa Mini Pro) and it has a DTap port on it that comes from the camera’s power supply, not powered directly from the battery from what I understand, which is why the power plate connects with a multi-pin Molex connector.
I connect my SmallHD Monitor to the BMD battery plate DTap, the EVF to the front 4-pin power connector (this is also a regulated 12-VDC connector) and power the camera, EVF and Monitor from the camera battery, via the Ursa. I do not connect directly to a DTap on the battery. If you do not have a EVF, you can use the front 4-pin xlr connector to power the monitor, just need the right cable, which are available.
That said, you need to take precautions to prevent a ground loop issue. First, turn off the camera and monitor before connecting power and SDI cables between them and the camera. When all is connected, turn on camera, turn on EVF (if using one) and or turn on Monitor. This way you are powering up the camera first (biggest startup power draw), then the Monitor. Power down before disconnecting.
Following the above practice, I have never had an issue. I would not power multiple devices directly from a battery like a camera battery without some type foe BDS (battery distribution system). With the Ursa/Mini the camera is the BDS.
Cheers
Denny Smith
SHA Productions