two decoders with one dish

[mpj111]

When I install two decoders to  one sattelite  ( with one LNB),   I have to use splitter  to connecte two decoders. But  power passing should be on one side of the splitter. Can I use  splitter  with  power passing capability  on both inputs. Does'n t   it conflict the power  comming from bedoth decoders.
Reason is, I can use one decoder   at a time  if other is turned  off.

Your reply much appreciated.

[Freeviewshop Administrator]

When I install two decoders to  one sattelite  ( with one LNB),   I have to use splitter  to connecte two decoders. But  power passing should be on one side of the splitter. Can I use  splitter  with  power passing capability  on both inputs. Does'n t   it conflict the power  comming from bedoth decoders.
Reason is, I can use one decoder   at a time  if other is turned  off.

Your reply much appreciated.

Hi,
Yes if you use a power pass all ports splitter form us the splitter will allow either STB to power the LNB (the other receiver is protected by a diode in the splitter). In this configuration the horizontal polarity will get priority i.e. if either STB chooses the horizontal polarity the other will also receive the horizontal polarity. If you are using only Freeview and Sky they are both on the horizontal polarity of OPTUS D1 everything will work fine, but you can't receive vertical feeds from the same Satellite if there is a receiver using Sky or Freeview (some STBs even power the LNB in standby so even then you might not be able to). If you want to get around that you can get a dual or quad output LNB:

http://www.freeviewshop.co.nz/zenus-dual-output-10750-band-p-40.html

http://www.freeviewshop.co.nz/zenus-quad-output-10750-band-p-663.html

[mpj111]

the other receiver is protected by a diode in the splitter

Anoter question, Both receives are protected by a diode inside the  splitter, Ok,

But LNB receiving  DC voltage (18 V )  from both decoders, Is that true?.

If LNB getting  the power from both receiver at the same time,  does'nt it  get conflict?  Thanks for the answer

[Freeviewshop Administrator]

But LNB receiving  DC voltage (18 V )  from both decoders, Is that true?.

If LNB getting  the power from both receiver at the same time,  does'nt it  get conflict?  Thanks for the answer

If both receivers select H Pol (output 18V), the LNB receives 18V (well actually approx 17.3V because there is a volatge drop of 0.7V accross the prtection diode) , no there is no conflict. Both can watch H Pol channels.

If both receivers select V Pol (output 13V), the LNB receives 13V (well actually approx 12.3V because there is a volatge drop of 0.7V accross the prtection diode), no there is no conflict. Both can watch V Pol channels.

If one receiver selects H Pol (outputs 18V) and the other V Pol (outputs 13V), the LNB receives 18V (well actually approx 17.3V because there is a volatge drop of 0.7V accross the prtection diode) , the receiver that selects H Pol will be able to watch the H Pol channels, the Receiver that selects V Pol will not be able to watch V Pol channels, if you need that to work you should get dual or quad output LNB instead.

If one receiver selects H Pol (outputs 18V) and the other is off (outputs 0V), the LNB receives 18V (well actually approx 17.3V because there is a volatge drop of 0.7V accross the prtection diode) , no there is no conflict. The receiver that is on can watch H Pol channels.

If one receiver selects V Pol (outputs 13V) and the other is off (outputs 0V), the LNB receives 13V (well actually approx 12.3V because there is a volatge drop of 0.7V accross the prtection diode) , no there is no conflict. The receiver that is on can watch V Pol channels.

[mpj111]

Thanks