(07-Jun-2015, 20:53)Antoine Wrote:(07-Nov-2014, 12:04)GuillaumeB Wrote: - Light-piped Ethernet ports - complete electrical isolation totally removing possibility of interference and noise.
Recently I found out that the above displayed part of the specs did NOT mean Melco uses some form of opto isolation (galvanically isolating the ethernet inputs by converting the input signal into light). Instead it means that they 'lead' the light from ethernet status/activity LED's (which are not inside the ethernet connector but on the PCB surrounding it) through a plastic "pipe" to the back of the device.
For their "complete electrical isolation" they still use 'conventional' pulse transformers.
See also: http://translate.google.com/translate?hl...&sandbox=1
IMO it's specs are bordering on deceiving...perhaps crossing the border but I'm not sure I'm not a lawyer.
Yes, the fact that the isolation is galvanic rather than optical was reported in an interesting thread on the Minimserver Forum some time ago. It's worth reading that thread if you're interest in Melco and you may spot some familiar names there:
http://forum.minimserver.com/showthread.php?tid=2032
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