[Elphel-support] POE card in custom enclosure?

[Andrey Filippov]

Nathan, Sebastian,

I can tell you how it is done in the Eyesis (it uses regular 48V, 36-72V
input). In order to reduce number of the connectors inside the camera (and
connectors are the most likely to fail components so just the network
connector on the NC353 camera can be a source of interruptions) we ordered
custom modified cables - the cables are cut open near the other (opposite to
the camera) connector (~10cm from the end), the two non-signal pairs are
separated from the RJ45 connector, extended anothe 10cm and a 2-pin Molex
Microfit-3 connectors are attached. Then, inside the "data storage box"
these connector plugs go the the 48V DC connectors on the PCB there, while
RJ45 (with only 2 pairs left) go to a small 5-port GigE switch. While the
cameras are 100Mbps, usage iof Gigabit switch makes sense - the single
(gigabit) downstream cable going out of the switch can handle 3 attached
cameras without slowing them down when they are  working in parallel.

Andrey


On Tue, Jun 14, 2011 at 5:11 AM, Sebastian Pichelhofer <
sebastian.pichelhofer at gmail.com> wrote:

> I guess it would work If the voltage range matches.
>
> What about 2 of these?
>
> http://www.optimal-microsystems.com/store/product_info.php?cPath=37&products_id=187&osCsid=d1c5619458c4128fa95f8e62d04adad5
>
> I assume your router will be inside the custom enclosure so these have
> the advantage that only the connectors that go to the cameras are on
> the outside surface of the custom enclosure and the cables inside the
> enclosure can be routed easier.
>
> Regards Sebastian
>
> On Tue, Jun 14, 2011 at 13:03, Nathan Clark <nathan at nathanclark.com.au>
> wrote:
> > Hi Sebastian,
> >
> > I certainly could put the current power injectors- as supplied from
> elphel-
> > within the box. Although this would be a bit of a hack.
> > I am hoping to construct a more "finished" device. It would be very nice,
> by
> > design, to have neatly placed I/O ethernet ports properly embedded into
> the
> > assembly!
> > Admittedly it is total "Overkill"... (the whole project is really)- but
> > would it still work?
> >
> > Cheers,
> >
> > Nathan
> >
> >
> > On Tue, Jun 14, 2011 at 8:41 PM, Sebastian Pichelhofer
> > <sebastian.pichelhofer at gmail.com> wrote:
> >>
> >> Hi Nathan
> >>
> >> Your cameras run on 12-36V and you should have the power injector
> >> adapter cable right?
> >> For this you would not need any PCB or circuit at all to inject the
> >> power its simply connecting certain pins of the Ethernet cable to the
> >> voltage.
> >>
> >> The link you provided states: "is an adaptor that eliminates the need
> >> to run high voltage power 110VAC to remote wireless access in order to
> >> power RF transmitters/receivers" so I think that's clearly an overkill
> >> ;)
> >>
> >> Couldn't you just place the 2 injector cable adapters inside your
> >> custom enclosure and wire both of them to a single battery with a
> >> Y-power splitter cable?
> >>
> >> Regards Sebastian
> >>
> >> On Tue, Jun 14, 2011 at 12:30, Nathan Clark <nathan at nathanclark.com.au>
> >> wrote:
> >> > Hi guys,
> >> >
> >> > I am planning to construct an enclosure to house peripherals attached
> to
> >> > my
> >> > elphel cameras.
> >> > This way I have everything I need in one neat box which can be powered
> >> > from
> >> > a single PSU- making the setup easier to manage in various situations.
> >> > Additionally, I would also like to use this box to have 2x POE
> injectors
> >> > contained within- further simplifying the design of the camera rig.
> >> >
> >> > I am hoping someone could have a look at the following component, and
> >> > confirm whether or not it would be appropriate.
> >> >
> >> > INJECTOR-PS48 -
> http://www.eidusa.com/Electronics_Kits_PoE_injector.htm
> >> >
> >> > or if it is not the right component, is there something you could
> >> > recommend?
> >> >
> >> > thanks for your time,
> >> >
> >> > Nathan
> >> >
> >> > PS. you can follow the progress of this project at the Apertus forum.
> >> > http://cinema.elphel.com/forums/viewtopic.php?f=4&t=108
> >> >
> >> > _______________________________________________
> >> > Support-list mailing list
> >> > Support-list at support.elphel.com
> >> >
> >> >
> http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
> >> >
> >> >
> >
> >
>
> _______________________________________________
> Support-list mailing list
> Support-list at support.elphel.com
> http://support.elphel.com/mailman/listinfo/support-list_support.elphel.com
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://support.elphel.com/pipermail/support-list_support.elphel.com/attachments/20110614/e24726cf/attachment-0002.html>