david j Posted February 27 Posted February 27 Had alot of trouble around my area lately and need some cameras I have Low noise power supplies fancy cables ect and Im Getting a fantastic sound from streaming Will adding some cameras with poe affect this? Or will they be ok on a seperate switch Any ideas?
Volunteer El Tel Posted February 29 Volunteer Posted February 29 No. Galvanic isolation, as part of the Ethernet standards, will ensure that. 1
david j Posted February 29 Author Posted February 29 Thanks for the reply El Tel Now to find the right switch
rand129678 Posted March 1 Posted March 1 (edited) 21 hours ago, El Tel said: No. Galvanic isolation, as part of the Ethernet standards, will ensure that. Actually no, galvanic isolation is bypassed with POE, even UTP cable. There is power on the secondary side of transformer, hence isolation is defeated. POE cameras won't add noise to audio system. But was worth understanding the below when I had a POE powered networked DAC (Ravenna). Edited March 1 by rand129678 added
Volunteer El Tel Posted March 1 Volunteer Posted March 1 3 hours ago, rand129678 said: Actually no, galvanic isolation is bypassed with POE, even UTP cable. There is power on the secondary side of transformer, hence isolation is defeated. POE cameras won't add noise to audio system. But was worth understanding the below when I had a POE powered networked DAC (Ravenna). The key point was that OP was setting up a secondary dedicated PoE switch. Provided an unshielded cable, or a fibre connection is used between the PoE switch and its upstream connection (to other switch or router), then galvanic isolation will provide a noise barrier.
david j Posted March 1 Author Posted March 1 I was thinking of a second switch with the poe ? or i like the idea of 1 for the lot with a iec power in not a wallwart power supply With hifi cables im good But these different types of ethernet cables got me confused Thanks for the help
The Mad Scientist Posted April 17 Posted April 17 (edited) My main rig's DAC is fed by a PoE powered RPi running Ropieee. I can bring a -120dBFS test track up to audibility. The PoE switch also feeds 8 PoE cameras and a couple of other PoE devices. There's nothing to worry about. Edited April 17 by The Mad Scientist
david j Posted April 17 Author Posted April 17 Hi Graeme, Have four cameras on a separate poe switch and all seems good Thanks for the reply's
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