nadal liu
Regular Member
- Joined
- Jan 16, 2014
- Messages
- 38
- Reaction score
- 3
- Points
- 8
- My Satellite Setup
-
120cm offset dishes for 124e and 128e with emp centauri profi multiswitch 9x16, and 5x20
,180cm prime dish with lo 10678 ku lnb for 110e bs/cs
- My Location
- Hong Kong
I have a question regarding multi-switch and electric current to LNB.
To put it simple, does multi-switch provide electric current to lnb from the power adapter that we plug into the wall socket? Or the multi-switch pass the electric current from stb to lnb?
I know that multi-switch needs to know if we need vertical or horizontal signal and it tells that by the voltage of electric current provided by stb. I, however, don't know if the multi-switch then passing the electric current to lnb or not.
The reason I asked is that I am receiving the signal of Japanese satellites, 124E and 128E. Each of them has vertical and horizontal signal and in hi band only. Japanese stb has a different voltage that it provides to lnb, 11v for vertical and 15v for horizontal. I have two multi-switches from emp centauri, 9x16 and 5x20. They are at different sites. On the 9x16 I have an external electric current adapter that provides electric current to lnb. On the 5x20 I don't have. The lnbfs are general 11300 single LO dual output ones that accepts 13v/18v. If I hook up Japanese stb to the 9x16, it seems to work fine for both vertical and horizontal signal. It won't work well, however, on the 5x20, specifically the horizontal signal is lost. I assume it is because the voltage from stb is 15v and it is not enough for the 5x20 multi-switch to know that we want horizontal signal. But, why does it work on the 9x16 multi-swtich? I have no idea. I am assuming that 9x16 is working because it happen to accept lower voltage of 15v and send horizontal signal to stb, and 5x20 is not working because it has a higher threshold of voltage, and the multi-switch provides electric current to lnb on its own and not from the stb.
Please kindly shed me some light.
Thanks.
To put it simple, does multi-switch provide electric current to lnb from the power adapter that we plug into the wall socket? Or the multi-switch pass the electric current from stb to lnb?
I know that multi-switch needs to know if we need vertical or horizontal signal and it tells that by the voltage of electric current provided by stb. I, however, don't know if the multi-switch then passing the electric current to lnb or not.
The reason I asked is that I am receiving the signal of Japanese satellites, 124E and 128E. Each of them has vertical and horizontal signal and in hi band only. Japanese stb has a different voltage that it provides to lnb, 11v for vertical and 15v for horizontal. I have two multi-switches from emp centauri, 9x16 and 5x20. They are at different sites. On the 9x16 I have an external electric current adapter that provides electric current to lnb. On the 5x20 I don't have. The lnbfs are general 11300 single LO dual output ones that accepts 13v/18v. If I hook up Japanese stb to the 9x16, it seems to work fine for both vertical and horizontal signal. It won't work well, however, on the 5x20, specifically the horizontal signal is lost. I assume it is because the voltage from stb is 15v and it is not enough for the 5x20 multi-switch to know that we want horizontal signal. But, why does it work on the 9x16 multi-swtich? I have no idea. I am assuming that 9x16 is working because it happen to accept lower voltage of 15v and send horizontal signal to stb, and 5x20 is not working because it has a higher threshold of voltage, and the multi-switch provides electric current to lnb on its own and not from the stb.
Please kindly shed me some light.
Thanks.