hey guys, looking for some opinions on this:
Here's the deal:
Sennheiser EW 300 G3 receivers.
They can be DC fed via a "wall wart" PSU feeding DC into a dedicated jack on the back of the unit.
They can also receive their DC voltage via the BNC antenna connections, typically from an antenna signal distribution unit that also passes along DC to the various receivers.
It's not illogical to think that there is some sort of parallel connection of the DC voltage on the PSU jack and on the BNC connectors on the back of the receivers. A diode network could prevent the various jacks from "seeing" eachother.
Measuring DC on the BNC connector with a DC PSU connected to the DC input jack shows 4 volts "coming out" of the BNC out of the 12 volts being "put into" the DC jack.
I'm wanting to use these receivers with a passive antenna distribution unit that does NOT pass along DC via the BNC connections, meaning that I will have to feed the receivers via the dedicated DC input jack.
The distro unit is passive in terms of its RF operation, but it will need to be powered on anyways, as the antenna inputs on the front of the unit is to provide DC power to "active" antennas via those BNC connections.
Would you worry about this?
Please let me know if I was unclear.
Here's the deal:
Sennheiser EW 300 G3 receivers.
They can be DC fed via a "wall wart" PSU feeding DC into a dedicated jack on the back of the unit.
They can also receive their DC voltage via the BNC antenna connections, typically from an antenna signal distribution unit that also passes along DC to the various receivers.
It's not illogical to think that there is some sort of parallel connection of the DC voltage on the PSU jack and on the BNC connectors on the back of the receivers. A diode network could prevent the various jacks from "seeing" eachother.
Measuring DC on the BNC connector with a DC PSU connected to the DC input jack shows 4 volts "coming out" of the BNC out of the 12 volts being "put into" the DC jack.
I'm wanting to use these receivers with a passive antenna distribution unit that does NOT pass along DC via the BNC connections, meaning that I will have to feed the receivers via the dedicated DC input jack.
The distro unit is passive in terms of its RF operation, but it will need to be powered on anyways, as the antenna inputs on the front of the unit is to provide DC power to "active" antennas via those BNC connections.
Would you worry about this?
Please let me know if I was unclear.