2nd t5

Today I put up and aimed a new dish with dp quad lnb. It is only locked into 82w at the moment. It is hooked up to two dreamlink t5 boxes each with the hd module installed.the used lnb settings in both boxes are

lnb power on
lnb type ocs dp
lnb freq 11.250
22khz on
sw 1.0 2

One box shows blue bars at 97% and works fine.
The second box shows no red or blue or anything in the s and q meters. I have switched the wires at the dish so each box was on the other lnb port and it made no difference. I also switched power supplies of the boxes (the supply of box one was replaced as per them being shipped with weak power supplies.)
Worth noting is the second box also shows no bar info (red or blue) when set to sat 91W, even though it is not aimed there it should show red.
Since 91w shows nothing i suppose that means the culprit is not likely the 8psk module.

ideas???

you also need to use disecq settings
turn off 22 and 21

The T5 may not have the DC current capabilities to run a DP quad LNB, it needs about 500 mA to run the dual LNB's and internal switch.

Check the DC current rating at the back of the T5 where the LNB connects.

If under or equal to 500 mA, then a DP44 switch power supply may be needed.

And the DP LNB has it's own internal switch, so you don't need the 22 KHz on, just the correct Diseqc switch settings for 91 and 82, I think 91 would be Diseqc port #1, and 82 would be Diseqc port #2.

So the settings would look something like this.

For 91.
lnb power on
lnb type ocs dp
lnb freq 11.250
22khz off
Diseqc switch #1.

And for 82.
lnb power on
lnb type ocs dp
lnb freq 11.250
22khz off
Diseqc switch #2

Also the DP type LNB uses band-stacking, so the coax used needs to be rated to 2.5 GHz or swept to 3 GHz, CATV coax will not work too good.

And no, two receivers will not make up for the difference in DC current.

Quote:

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Originally Posted by dishuser

you also need to use disecq settings
turn off 22 and 21

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i have diseqc 1.0 set to 2
the others are off.
Are you saying lnb 22khz needs to be off?

Quote:

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Originally Posted by Terryl

The T5 may not have the DC current capabilities to run a DP quad LNB, it needs about 500 mA to run the dual LNB's and internal switch.

Check the DC current rating at the back of the T5 where the LNB connects.

If under or equal to 500 mA, then a DP44 switch power supply may be needed.

And the DP LNB has it's own internal switch, so you don't need the 22 KHz on, just the correct Diseqc switch settings for 91 and 82, I think 91 would be Diseqc port #1, and 82 would be Diseqc port #2.

So the settings would look something like this.

For 91.
lnb power on
lnb type ocs dp
lnb freq 11.250
22khz off
Diseqc switch #1.

And for 82.
lnb power on
lnb type ocs dp
lnb freq 11.250
22khz off
Diseqc switch #2

Also the DP type LNB uses band-stacking, so the coax used needs to be rated to 2.5 GHz or swept to 3 GHz, CATV coax will not work too good.

And no, two receivers will not make up for the difference in DC current.

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the box is rated for 500 ma maximimum. but box 1 runs it fine.
But there is a run of cheap white cable wire i bought to run box two, perhaps this is the problem....taking box two to hook up downstairs to see if that is it...

Quote:

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Originally Posted by Huck123

i have diseqc 1.0 set to 2
the others are off.
Are you saying lnb 22khz needs to be off?

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use 1.0 and settings terryl posted

You might be putting a strain on the primary receiver, but the 500 mA rating is the top end on the LNB power spec's.

And yes try it at the working receiver.

Is the DP quad a new one?? or an older one??

Can you post a photo of it?

switching box locations didnt help...

the lnb is brand new

strangely if i set the freq to 9.750, 10.000, 10.050, 10.600, 10.750, i get red bars, everything else is blank. as well if i go to the frequency page i get signal starting around 12.384 ghz(h) but it is red, then i go back and forth a couple times and it will show the blue.. so weird

Good grief, thank you guys, a factory reset, firmware reinstall and new factory reset and its somewhat better. I now get blue bars in the sat pointing area but scrolling through freqs shows random strength readings, i suspect you are right Terryl in that the lnb is being under powered.

Also is seems the box gets signal on all of the horizontal frequencys and none of the verticals.

You may get fluctuating readings when going through the transponders as not all are continental wide beams, some are spot beams, these are pointing at different locations.

Also if the coax you used was not up to the 2.5 to 3 GHz spec you will get lower then normal readings the higher you go on some transponders.

And great to see that you got it going, one thing, if you do go out and buy a new LNB, they don't make the old style "Quad" LNB anymore,(4 outputs) the new one only has 3 ports on it, two for receivers and one input for a second DP single LNB.

Don't try and run 2 DP type LNB's on this setup, (one DP quad and one DP single) as it will put you way over the DC current limit for your receiver.

On DP/DPP Dish or BEV band stacked LNB's, the frequencies are stacked as follows:

• 950-1250 MHz for Odd transponders (L or H)
• 1450-2150 MHz for Even transponders (R or V)

You may have coax problems, check the coax cover to see what it is used for, if CATV or nothing then it may be the problem, it has to be rated to at least 2.5 GHz or the attenuation (signal loss) at the 1450-2150 high band may be too much.

thanks for your replies Terryl. Couple of things...
My quad lnb although brand new is indeed four outputs.
I just checked and all of my coax lines are stamped 3.0ghz.
The box in the basement, (which has been in use for a year) performs well with the exception of frequency group 36, which shows low signal and quality.
I read a post of yours in the lnb section of the forums that says that using a powered switch with a dp quad could be damaging to the recievers in use. Is this the case here?
Would i be better off using a couple regular lnbs with a pair of sw21?
Is the dp twin as power hungry/fickle as the quad?
Thx

I get the same problem some times after having the power off on my T5
when I scan I only get horizontal Transponders
My fix for that is to switch from ocs dp to just ocs and check a vertical transponder before scanning
It works for my setup

For the record:I find both the T4 & especially the T5 work much better with legacy lnb/sw21 combo.

so i did the switch to ocs and it brings in all frequencies except 12.443 which is fine for now. in the future i thing i may switch to the legacies and sw21, thx to all.

Check the coax

Quote:

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Originally Posted by Huck123

thanks for your replies Terryl. Couple of things...
My quad lnb although brand new is indeed four outputs.
I just checked and all of my coax lines are stamped 3.0ghz.
The box in the basement, (which has been in use for a year) performs well with the exception of frequency group 36, which shows low signal and quality.
I read a post of yours in the lnb section of the forums that says that using a powered switch with a dp quad could be damaging to the recievers in use. Is this the case here?
Would i be better off using a couple regular lnbs with a pair of sw21?
Is the dp twin as power hungry/fickle as the quad?
Thx

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Getting back to you on this, the DP quad LNB has not been made for many years, you might have been sold someones old stock, but if it is a new one and it works then don't worry.

In the post about receiver damage using a powered switch, this is only possible when a DP44 switch power supply in used IN-LINE with an FTA receiver, the FTA receiver does not like the switches power supply connected to it's LNB port, the DP switches power supply was only designed to be used with an OEM receiver, the OEM receivers will detect the switch (during a switch check) and shut down the DC power output on the OEM receiver, as the switch's power supply feeds both the switch and the LNB(s).

The DPP twin LNB (Dish Pro Plus)would be a bit less in the DC current requirement, and should work fine with an FTA receiver rated for 500 mA output to the LNB, it would only be a problem if you tried to run a second LNB off it's input port.

If you use a DP power supply to run a power hungry DP LNB,(DP quad, DP1000) or DP44 switch, then the DP power supply should be run on it's own coax out to the DP LNB or DP44 switch.(LNB port #1, or switch port #1)

Now a good setup using two DP single LNB's would be a DP44 switch and it's power supply, (remember the extra coax needed) this would give you 3 ports to run the FTA receivers.

The good thing is that you only need one coax from each LNB to the switch, you could run 4 DP single LNB's this way

Note:
To anyone trying or using this setup, you can run up to 9 receivers this way, 3 per DP44 switch, you need 3 switch's and there power supply's, the DP44 switch can be stacked for a total of 3.

To be clear, are you saying I can use a dp power supply and run the power (via its own dedicated coax line) directly into the quad lnb using one of the unused lnb ports (in my case port 3 or 4) and it wont harm the lnb. So i dont need to use the dp 44 switch in between? thanks

No you don't need to use the switch, just it's power supply, and it would go to the #1 port of the LNB on it's own coax, ports 2, 3 and 4 would work fine.

And you can't use a Diseqc switch (except for at 22 KHz switch) with a DP quad LNB (or a DPP quad LNB), as they have internal switches and things will get very confused.

This LNB will work fine for your setup....Attachment 28354It has two outputs (the third one is an input and would not be used) and would not need the DP power supply

A easy setup for what you want would be 2- Legacy LNB's with Dual outs into 2-SW21'S or a 4x2 switch
one cable for each T5, non-powered switches used, the T5's power it all

I have found that a DishPro twin works well with two STB,it is not a power hog like the quad.