Mulitswitch Question

[stogie5150]

How does a multiswitch switch? I have my cband dish on the ON side of an ecoda 22khz switch leading from a 3X4 multiswitch distribution point and the receiver will not change polartities. I have another output going directly to another receiver from the multiswitch distribution point with no 22KHZ inline and it switches polarities fine. Does the 22khz tone from the switch interfere with the multiswitch switching between polarities?

 

[Mr Tony]

I assume you have a dual LNB on C-Band?

I know mine works...hell I have a 22k, diseqc AND a multiswitch involved


receiver------ecoda----diseqc port 1-----multiswitch----CBand LNB

2 of the 3 receivers that are hooked to G4 are set up that way...the 3rd is to a regular 22k switch. I even have the same for G10

but as to how a multiswitch works. It just allows you to have more than 2 receivers off a dual LNB. One input is fixed at 13v (vertical) and the other is 18v (horizontal). So when the receiver picks a vertical TP, it goes up the 13v side of the switch. So this allows you to have 3 boxes on a V polarity and one on H with no interference

 

[stogie5150]

Yes I have a dual Cband lnb.

Mine is

receiver-----ecoda-----multiswitch---cband lnb

At the ecoda switch I have the KU band dish hooked to 22 khz OFF and the C band feed from the multiswitch on the 22khz ON side of the ecoda. That's why I surmise that the 22K tone is messing with the multiswitch's ablity to change polarities. I am gonna switch it over tomorrow morning and see if it makes a difference.

 

[Anole]

The 2x4 multiswitches (and 3x4) are as Iceberg said.
They have two inputs.
One input port actually outputs 12 volts to fix its LNB at V, and the other input has 18 volts to fix its LNB at H.
The 22khz tone or ecoda switch should have nothing to do with it.
But, you do have to have an LNB with two outputs.

The 4x4 multiswitches (and 5x4) are like two banks of the above switch.
They use a 22khz tone to select which bank.
There are four inputs.
Normally, you'd hook both outputs of two LNBs to the four inputs.

Now, if you had a 4x4 switch, and put a 22khz switch in front of it, then you'd have a problem.

So, this would work with a 2x4:

[FONT=Courier New] .......................................................
        
                                 [/FONT][FONT=Courier New]---cband lnb
                          2x4   |
[/FONT][FONT=Courier New] receiver--<--ecoda--<--multiswitch.
               |                [/FONT][FONT=Courier New]|
               |                 ---cband lnb
               ^                     
               |                      
                ------- other LNB

[/FONT]

 

[stogie5150]

The 2x4 multiswitches (and 3x4) are as Iceberg said.
They have two inputs.
One input port actually outputs 12 volts to fix its LNB at V, and the other input has 18 volts to fix its LNB at H.
The 22khz tone or ecoda switch should have nothing to do with it.
But, you do have to have an LNB with two outputs.

The 4x4 multiswitches (and 5x4) are like two banks of the above switch.
They use a 22khz tone to select which bank.
There are four inputs.
Normally, you'd hook both outputs of two LNBs to the four inputs.

Now, if you had a 4x4 switch, and put a 22khz switch in front of it, then you'd have a problem.

So, this would work with a 2x4:

[FONT=Courier New].......................................................[/FONT]
 
[FONT=Courier New]---cband lnb[/FONT]
[FONT=Courier New]                         2x4   |[/FONT]
[FONT=Courier New]receiver--<--ecoda--<--multiswitch.[/FONT]
[FONT=Courier New]              |                [/FONT][FONT=Courier New]|[/FONT]
[FONT=Courier New]              |                 ---cband lnb[/FONT]
[FONT=Courier New]              ^                     [/FONT]
[FONT=Courier New]              |                      [/FONT]
[FONT=Courier New]               ------- other LNB[/FONT]

That's what I have Anole and it ISN'T working. I am gonna climb in the attic this morning while its cool and swap them out. I'll let you know my results.

 

[stogie5150]

Well, either the switch is bad or for some reason they won't work behind a multiswitch. I tried it the other way on the 22k switch, still only got V polarity. Took the switch out entirely and hooked it up with a barrel connector directly to the multiswitch, viola ( as they say), the CS5k scanned both H and V tp's.
So I guess I'll be buying two manual a/b switches and running more coax...luckily I have my old D* drops so I have an extra wire in every room....

 

[stogie5150]

Update:

Well now I have two coax runs to each receiver and manual A/B switches at each TV.

NOW, I have the same problem. I only have V polarity on all three receivers. I guess I need to go up in the attic and bypass the multiswitch and see if its bad or do I have a LNB problem.

This one has me scratching my head, fellas.

 

[Tron]

Is this problem on the BUD? Could it be a polarotor issue?

 

[stogie5150]

Is this problem on the BUD? Could it be a polarotor issue?

I got a new dual output LNB for the BUD

I bypassed the multiswitch and it works fine. So I need a new multiswitch.

 

[Mr Tony]

well at least you know what it is now

 

[stogie5150]

...and I fried another one. I figured out why, I think. I was messing with the analog receiver the other night, slaved to my DVB receiver. I think the voltage fried the mulitswitch somehow. It was working fine until I did that, now, no H polarity, only V out of the multiswitch again. !sadroll
I hope the LNB isn't fried too....

I have a Zinwell 6X8 here...I guess I'll swap it out tomorrow...

 

[linuxman]

That's ok Stogie!

You should read some of my earliest threads when I first joined.

Now you know why I use Hi-Freq splitters with one port DC blocking when slaving an analog.

I don't know how many diseqc switches I fried. One I had sent to me NDA saturday delivery which cost me $50.00 total, and fried it within an hour. along with several Hi-Freq splitters that weren't DC blocking on one side.

It'll get better.

Fred

 

[Anole]

I asked about getting the 6x8's to run a while back.
Thought the answer was that it made a fine 4x8 switch.
6x8 Switch of Any Use?

The first four inputs were selected by a combination of 12/18v, and 22khz on/off.
The last two inputs... well, nobody told me how to get them working.