[mythtvnz] List Info (reprise)

[Steven Ellis]

On Tue, July 31, 2007 10:43 am, Steve Hodge wrote:
> On 7/31/07, Simon Third <simon@simtec.co.nz> wrote:
>>
>>  On 7/29/07, Simon Third <simon@simtec.co.nz> wrote:
>>
>> >  Steve, I figured the HVR-3000 card would drive the DC power and cla=
sh
>> > with the Sky box.  Maybe this is not he case?
>> >
>>
>> It can be an issue if one device wants horizontal and one wants vertic=
al
>> -
>> horizontal will be the polarity chosen. That's what happens now with S=
ky
>> on
>> V and Freeview on H (though it seems to me that it's still better have
>> Freeview with the potential to screw up a simultaneous Sky recording
>> than to
>> not have Freeview). But once Sky switch to H on Tuesday morning both
>> will be
>> the same anyway so it would only be an issue if you were using some
>> vertical
>> polarity DVB channel ( i.e. non-Freeview). AFAIK it shouldn't be a
>> problem
>> to have two devices both driving the voltage that selects horizontal
>> through
>> a multi-power-pass splitter. I was wondering if you'd heard something
>> different.
>>
>> Steve
>>
>> My electronics background tells me this is not a good idea.  If you
>> tried
>> it and the smoke didn't come out, then lucky you.
>> I would not recommend this to the list.  Someone is bound to have a
>> configuration one day that generates smoke!
>>
>
> Why would multi-power-pass splitters exist if that were the case?

Make sure you use a try All Port power pass splitter as these have a diod=
e
that only allows power in one direction.

steve

--------------------------------------------
Steven Ellis - Technical Director
OpenMedia Limited - The Home of myPVR
email   - steven@openmedia.co.nz
sales   - sales@openmedia.co.nz
support - support@openmedia.co.nz
website - http://www.openmedia.co.nz