Re: Central power source for KAT5 units

[psghome2002]

Thanks Keith,

I'll give it a try when I get the units.

Paul.

--- In kat5-users@y..., "Keith Doxey" <keith.doxey@b...>
wrote:
> As Mark says, all pairs are already used.
>
> I would caution against using a centralised power supply for one
reason.
> Using a common power supply would meant that all units would have
a common
> ground reference via the 0V rail. This could then lead to the
possibility of
> a ground loop which is one of the main benefits of balanced
distribution.
>
> You wont do any harm by trying a central source provided it is the
correct
> rating and polarity. You would need to get a second patch cord,
cut the end
> off and fit a 2.1mm DC Power plug Centre Positive.
>
> You will soon know if you get a ground loop as there will be an
audible hum
> and possible a band of lighter or darker picture moving up the
screen. If
> that happens you will need to use a local power supply.
>
> Keith
>
> www.diyha.co.uk
> www.kat5.tv
>
>
> -----Original Message-----
> From: psghome2002 [mailto:psghome@h...]
> Sent: 22 April 2002 09:29
> To: kat5-users@y...
> Subject: [KAT5] Central power source for KAT5 units
>
>
> I'd like to centrally power my recently ordered units. I've got a
> load of high-rated power supplies (all kinds of output voltages)
> knocking around from an electronics company I used to work for many
> moons ago.
>
> Questions are:
>
> How many pairs of Cat5 do the units use (Video/Stereo TX &amp; RX
units)
> and which (if any) are free to distribute power?
>
> User guide on web site states 300mA as supply current - what is the
> actual drain?
>
> How easy would it be to separate the power from the Cat5 cable
> inside/outside the Kat5 unit?
>
> Thanks,
>
> Paul.
>
>
>
>
>
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