Hello I have a cable from UPC and it looks like this: 1. The cable goes to splitter # 1: One of the legs goes to the TV, the other one as below (point 2) 2. The second splitter, which splits the signal into 3 wires: - cable 1 not used (there was a Mediabox no.2 decoder) - cable 2 UPC Horizon...

It actually depends on what your contract with UPC allows you to do when it comes to messing around with the wiring in your apartment. I understand that the receiver did not work when plugged into the socket? It should work without any problems, especially if the other receiver (M1, the one on the old 'flight') was working. I mean, there is something wrong with this socket: - you connected something wrong. - damaged TRIS - just swap the outputs and you will know - damaged or some 'left' cable connecting the socket to the receiver (replace it with another one) - not very sensitive M2 decoder in relation to M1 (switch receivers) When it comes to TRISs, in the past there were such sockets / splitters in cable TVs separating the signal into TV and IP modem. It can also be used as a splitter for receivers - it has equal attenuation on both outputs, but slightly higher than the standard splitter. You can also use the one on the left - this in turn is a splitter for three with the separation of the return path on the two inputs. I would put the first Teleste DSS2 splitter into the socket, which is at the entrance to the apartment and will be unused. Unless it has to remain, then one of the Tris or some decent splitter for two. How can you pass it.

Well, if the first splitter is to be left, it's difficult. If the M1 receiver worked on the signal from Tris and M2 did not, it means that the sensitivity is very different. It happens. Generally speaking, the fact that the receivers are of the same type may not mean much. They can differ significantly both in terms of hardware and soft. I mean, it may be that when it comes to sensitivity, apart from the name, they have little in common. Or maybe the M2 is simply damaged and has low sensitivity. Possibly, the M1 has sensational sensitivity. Another thing is that the difference in the signal level between the output from the first splitter (BSS2), and after the compilation of the second splitter (BSS3) and the new splitter for two, it will be at least 10.5 ... 11dB with a standard cable splitter, and using the Tris (right) it is about 12dB. That's a lot. It is enough that there is not enough for the receiver. On the other hand, one dB of difference is nothing. So, if the Tris is operational and the M2 is not working, it means that it will not work with the 'standard' cable splitter. Does the M2 work properly if driven directly from the output of splitter on 3 (BSS3)? A good cable splitter can be difficult for you to buy in one piece - you can look at Technetix splitters, for example Wco-Line (ED-02) - representative / shop But before you start looking - you have to come to terms with this M2. EDIT : I read all the posts again, because something was bothering me, and it turned out that the M2 previously worked from the output of the three-way divider (BSS2). Horizon, in turn, shows the signal level at the BSS3 output at the level of ~ 60dBuV, so the optimum. However, check this M2 for pickup now after BSS3, because something strange is happening - the 5dB Tris attenuation shouldn't erase it that much, especially since the M1 worked in these conditions. Also check if the Diagnostics tab in the Mediabox menu shows the level and quality of the received signal.

Well ... I guess they just show it like that - it is or is not there. It does not necessarily have to be suitable, because sometimes sellers who do not know more about what and for what they are selling, simplify the descriptions, sometimes throwing away important information. So, you can buy it if you know the product (as long as there is no counterfeit being offered), and if you don't know it, it is better to look for an offer with a full description. It should do. But note - its declared attenuation is 4dB, and Tris has a declared 4.6dB - really - 0.6dB is no difference. It looks more and more like some kind of ailment of M2. Generally you can, but it is at least several dozen zlotys. Some kind of subscriber amplifier with a gain of 10dB. But it would be better and more convenient for UPC to raise the signal level by these few dB, if they have a spare. Even for some money for the service.

TRIS 307P is a multimedia socket from TRATEC - with 2xDATA + 1x RTV outputs. TRIS 212E is a 1/2 splitter terminal socket also from TRATEC - with a return path lock on one of the outputs.

I suspect there is too much signal attenuation as it passes through so many signal splitters and you have pixelosis as a result.

There was pixelosis once, but they increased the signal strength for me (so they said) and it was ok on all 3 decoders. Only then was each decoder on one cable coming from the other splitter. Now I have to pull 2 decoders on one cable - hence the need to use another splitter. Added after 37 [minutes]: Only from Horizon (I entered via a browser):

All decoders worked correctly with BSS3, because each decoder was connected directly to it. I think I have already done it, but I will check again in the evening (then I have to disconnect M1). I did not find diagnostics in the Mediabox menu itself. I found some test on the last channel and (if I remember correctly) the signal strength was 100%, the quality was about 70% - these were the results on MB1 and MB2 when I connected everything on Tris (all decoders connected). Well, the pixelosis on MB2 was terrible. If I see a splitter somewhere, and the attenuation is not given (e.g. here: it means that it is not suitable? Only the frequency is given (typically 5-1000 MHz). Will it be good: Another question: is it impossible to amplify this signal? For example, where there is BSS3.

I have two that stayed when the UPC technician worked for me previously: It doesn't work because those, as you called it, tees are multimedia crossovers and it is not assembled as an ordinary tee.

I used this red Tris (4.6 and 4.0 dB), but most of all I replaced the cables, i.e. the standard antenna cables (those directly to the TV) were replaced with screw-on cables (+ adapter). Now it is so that on both TVs (where there are MBs) there is a nice picture. Occasionally there is a brief pixelosis to survive. I will do that for now. I think increasing the signal strength would solve the problem.

And this has to be confirmed by the UPC technician after taking the measurements. You will not increase the signal strength by yourself.

I used this new distributor: There is no data on attenuation, but at the auction it was: 3.2dB. Non-pixelated image, signal strength 100%, quality 92% (or vice versa). It's ok To sum up: the most important thing is the correct and reliable connection of the wires and a low-loss splitter.

[Solved] UPC Cable Splitter Setup: Managing Multiple Decoders & Antenna Pass-through Connections

seblas 13197 11

Treść została przetłumaczona

Zobacz oryginalną wersję tematu

Report a violation of the law

| New topic

#1 18164355 12 Sep 2019 13:44

seblas seblas

Level 10

» | Topic author

Post #1
18164355 12 Sep 2019 13:44

Hello

I have a cable from UPC and it looks like this:

1. The cable goes to splitter # 1:

One of the legs goes to the TV, the other one as below (point 2)

2. The second splitter, which splits the signal into 3 wires:

- cable 1 not used (there was a Mediabox no.2 decoder)
- cable 2 UPC Horizon decoder (everything ok)
- cable 3, unfortunately, goes to the pass-through antenna socket and then further to the next socket, where the Mediabox decoder number 1 is (works properly).

Everything worked (when the MB 2 decoder was on the # 1 cable), but now I need the decoder to give it a pass-through antenna.
So I removed this socket and now what to give a "tee"?
I have two that stayed when the UPC technician worked for me previously:

I connected to this on the right, but pixelosis terrible on MB2 (MB1 is OK).
Someone will help or call a service technician?
I can give the parameters of the signal from Horizon and MB 1, if I find such info somewhere (I'll give it in the evening).
ADVERTISEMENT
#2 18164411 12 Sep 2019 14:25

Grzegorz740 Grzegorz740

Level 37

» | Helpful post? (0)

Post #2
18164411 12 Sep 2019 14:25

I suspect there is too much signal attenuation as it passes through so many signal splitters and you have pixelosis as a result.
Helpful post

#3 18164582 12 Sep 2019 16:22

Anonymous Anonymous

Level 1

» |

Helpful post
Post #3
18164582 12 Sep 2019 16:22

seblas wrote:
Someone will help or call a service technician?

It actually depends on what your contract with UPC allows you to do when it comes to messing around with the wiring in your apartment.

seblas wrote:
So I removed this socket

I understand that the receiver did not work when plugged into the socket?

seblas wrote:
I connected to this on the right, but pixelosis terrible on MB2 (MB1 is OK).

It should work without any problems, especially if the other receiver (M1, the one on the old 'flight') was working. I mean, there is something wrong with this socket:
- you connected something wrong.
- damaged TRIS - just swap the outputs and you will know
- damaged or some 'left' cable connecting the socket to the receiver (replace it with another one)
- not very sensitive M2 decoder in relation to M1 (switch receivers)

When it comes to TRISs, in the past there were such sockets / splitters in cable TVs separating the signal into TV and IP modem. It can also be used as a splitter for receivers - it has equal attenuation on both outputs, but slightly higher than the standard splitter.
You can also use the one on the left - this in turn is a splitter for three with the separation of the return path on the two inputs.

seblas wrote:
and now what to give a "tee"?

I would put the first Teleste DSS2 splitter into the socket, which is at the entrance to the apartment and will be unused. Unless it has to remain, then one of the Tris or some decent splitter for two.

seblas wrote:
I can give the parameters of the signal from Horizon and MB 1, if I find such info somewhere (I'll give it in the evening).

How can you pass it.
ADVERTISEMENT
#4 18164728 12 Sep 2019 18:26

seblas seblas

Level 10

» | Topic author Helpful post? (0)

Post #4
18164728 12 Sep 2019 18:26

Grzegorz740 wrote:
I suspect there is too much signal attenuation as it passes through so many signal splitters and you have pixelosis as a result.

There was pixelosis once, but they increased the signal strength for me (so they said) and it was ok on all 3 decoders.
Only then was each decoder on one cable coming from the other splitter.
Now I have to pull 2 decoders on one cable - hence the need to use another splitter.

Added after 37 [minutes]:

_cheetah_ wrote:

seblas wrote:
Someone will help or call a service technician?

It actually depends on what your contract with UPC allows you to do when it comes to messing around with the wiring in your apartment.

seblas wrote:
So I removed this socket

I understand that the receiver did not work when plugged into the socket?
It worked, but the pixelosis was terrible, so let's assume it didn't work.

seblas wrote:
I connected to this on the right, but pixelosis terrible on MB2 (MB1 is OK).

It should work without any problems, especially if the other receiver (M1, the one on the old 'flight') was working. I mean, there is something wrong with this socket:
- you connected something wrong. It is rather difficult to connect wrongly, the more so because now (for MB1 to work and no socket) I just connected the input with the output. Oh yes:

- damaged TRIS - just swap the outputs and you will know I tried.
- damaged or some 'left' cable connecting the socket to the receiver (replace it with another one) Good cable, even once made by a service technician - crimp terminals.
- not very sensitive M2 decoder in relation to M1 (switch receivers) It's the same model, after all. But if it can be set in them, I would have to call a guest from UPC.

When it comes to TRISs, in the past there were such sockets / splitters in cable TVs separating the signal into TV and IP modem.
That's what I had before the Horizon era
It can also be used as a splitter for receivers - it has equal attenuation on both outputs, but slightly higher than the standard splitter.
You can also use the one on the left - this in turn is a splitter for three with the separation of the return path on the two inputs.

seblas wrote:
and now what to give a "tee"?

I would put the first Teleste DSS2 splitter into the socket, which is at the entrance to the apartment and will be unused. It is needed because a TV (analog) is connected on one leg, the other leg (min.10 meters) goes to the distributor No. 2 (BSS3) Unless it has to remain, then one of the Tris or some decent splitter for two. Exactly! But which???? There is a lot of it on the Allegro, I don't want to buy something bad.

seblas wrote:
I can give the parameters of the signal from Horizon and MB 1, if I find such info somewhere (I'll give it in the evening).

How can you pass it.

Only from Horizon (I entered via a browser):
Helpful post

#5 18165327 12 Sep 2019 23:07

Anonymous Anonymous

Level 1

» |

Helpful post
Post #5
18165327 12 Sep 2019 23:07

Well, if the first splitter is to be left, it's difficult.

If the M1 receiver worked on the signal from Tris and M2 did not, it means that the sensitivity is very different. It happens. Generally speaking, the fact that the receivers are of the same type may not mean much. They can differ significantly both in terms of hardware and soft. I mean, it may be that when it comes to sensitivity, apart from the name, they have little in common. Or maybe the M2 is simply damaged and has low sensitivity. Possibly, the M1 has sensational sensitivity.

Another thing is that the difference in the signal level between the output from the first splitter (BSS2), and after the compilation of the second splitter (BSS3) and the new splitter for two, it will be at least 10.5 ... 11dB with a standard cable splitter, and using the Tris (right) it is about 12dB.

That's a lot. It is enough that there is not enough for the receiver. On the other hand, one dB of difference is nothing. So, if the Tris is operational and the M2 is not working, it means that it will not work with the 'standard' cable splitter.

Does the M2 work properly if driven directly from the output of splitter on 3 (BSS3)?

A good cable splitter can be difficult for you to buy in one piece - you can look at Technetix splitters, for example Wco-Line (ED-02) - representative / shop https://emea.technetix.com/pl/10430070

But before you start looking - you have to come to terms with this M2.

EDIT :

I read all the posts again, because something was bothering me, and it turned out that the M2 previously worked from the output of the three-way divider (BSS2). Horizon, in turn, shows the signal level at the BSS3 output at the level of ~ 60dBuV, so the optimum.

However, check this M2 for pickup now after BSS3, because something strange is happening - the 5dB Tris attenuation shouldn't erase it that much, especially since the M1 worked in these conditions.

Also check if the Diagnostics tab in the Mediabox menu shows the level and quality of the received signal.
ADVERTISEMENT
#6 18165625 13 Sep 2019 09:37

seblas seblas

Level 10

» | Topic author Helpful post? (0)

Post #6
18165625 13 Sep 2019 09:37

_cheetah_ wrote:
Does the M2 work properly if driven directly from the output of splitter on 3 (BSS3)?

All decoders worked correctly with BSS3, because each decoder was connected directly to it.

_cheetah_ wrote:
However, check this M2 for pickup now after BSS3, because something strange is happening - the 5dB Tris attenuation shouldn't erase it that much, especially since the M1 worked in these conditions.

I think I have already done it, but I will check again in the evening (then I have to disconnect M1).

_cheetah_ wrote:
Also check if the Diagnostics tab in the Mediabox menu shows the level and quality of the received signal.

I did not find diagnostics in the Mediabox menu itself.
I found some test on the last channel and (if I remember correctly) the signal strength was 100%, the quality was about 70% - these were the results on MB1 and MB2 when I connected everything on Tris (all decoders connected). Well, the pixelosis on MB2 was terrible.

If I see a splitter somewhere, and the attenuation is not given (e.g. here: https://allegro.pl/oferta/rozgaleznik-tv-do-2-telwizorow-niskostratny-signal-5262516076), it means that it is not suitable? Only the frequency is given (typically 5-1000 MHz).
Will it be good: https://allegro.pl/oferta/rozgaleznik-sygnalu-tv-bve-20-01-axing-profi-4899273237?

Another question: is it impossible to amplify this signal? For example, where there is BSS3.
Helpful post

#7 18165874 13 Sep 2019 12:44

Anonymous Anonymous

Level 1

» |

Helpful post
Post #7
18165874 13 Sep 2019 12:44

seblas wrote:
I found some test on the last channel and (if I remember correctly) the signal strength was 100%, the quality was about 70% - these were the results on MB1 and MB2 when I connected everything on Tris (all decoders connected). Well, the pixelosis on MB2 was terrible.

Well ... I guess they just show it like that - "it is or is not there".

seblas wrote:
If I see a splitter somewhere, and the attenuation is not given (e.g. here: https://allegro.pl/oferta/rozgaleznik-tv-do-2-telwizorow-niskostratny-signal-5262516076), it means that it is not suitable?
It does not necessarily have to be suitable, because sometimes sellers who do not know more about what and for what they are selling, simplify the descriptions, sometimes throwing away important information. So, you can buy it if you know the product (as long as there is no counterfeit being offered), and if you don't know it, it is better to look for an offer with a full description.

seblas wrote:
Will it be good: https://allegro.pl/oferta/rozgaleznik-sygnalu-tv-bve-20-01-axing-profi-4899273237?
It should do.

But note - its declared attenuation is 4dB, and Tris has a declared 4.6dB - really - 0.6dB is no difference.

It looks more and more like some kind of ailment of M2.

seblas wrote:
Another question: is it impossible to amplify this signal? For example, where there is BSS3.

Generally you can, but it is at least several dozen zlotys. Some kind of subscriber amplifier with a gain of 10dB.

But it would be better and more convenient for UPC to raise the signal level by these few dB, if they have a spare. Even for some money for the service.
#8 18166001 13 Sep 2019 14:11

mieszkaniec mieszkaniec

Level 14

» | Helpful post? (0)

Post #8
18166001 13 Sep 2019 14:11

I have two that stayed when the UPC technician worked for me previously:

It doesn't work because those, as you called it, "tees" are multimedia crossovers and it is not assembled as an ordinary tee.
ADVERTISEMENT
#9 18177584 20 Sep 2019 15:59

seblas seblas

Level 10

» | Topic author Helpful post? (0)

Post #9
18177584 20 Sep 2019 15:59

I used this red Tris (4.6 and 4.0 dB), but most of all I replaced the cables, i.e. the standard antenna cables (those directly to the TV) were replaced with screw-on cables (+ adapter).
Now it is so that on both TVs (where there are MBs) there is a nice picture. Occasionally there is a brief pixelosis to survive.
I will do that for now.
I think increasing the signal strength would solve the problem.
#10 18179245 21 Sep 2019 18:22

Grzegorz740 Grzegorz740

Level 37

» | Helpful post? (0)

Post #10
18179245 21 Sep 2019 18:22

[quote = "seblas"
I think increasing the signal strength would solve the problem. [/ Quote]

And this has to be confirmed by the UPC technician after taking the measurements. You will not increase the signal strength by yourself.
Helpful post

#11 18183778 24 Sep 2019 12:33

TELMOR_PL TELMOR_PL

Level 32

» | Helpful post? (+2)

Helpful post
Post #11
18183778 24 Sep 2019 12:33

TRIS 307P is a multimedia socket from TRATEC - with 2xDATA + 1x RTV outputs.
TRIS 212E is a 1/2 splitter terminal socket also from TRATEC - with a return path lock on one of the outputs.
#12 18209850 09 Oct 2019 11:20

seblas seblas

Level 10

» | Topic author Helpful post? (0)

Post #12
18209850 09 Oct 2019 11:20

I used this new distributor:

There is no data on attenuation, but at the auction it was: 3.2dB.

Non-pixelated image, signal strength 100%, quality 92% (or vice versa). It's ok

To sum up: the most important thing is the correct and reliable connection of the wires and a low-loss splitter.
Create an account, log in here. You will receive points by participating in discussions.
Join this discussion.

Install Elektroda application

Didn't find an answer? Ask Artificial Intelligence

*I agree to send the question to OpenAI, Anthropic PBC, Perplexity AI, Inc., Kagi Inc., Google LLC - owners of language models in order to prepare the best response. The companies may monitor and log information entered into the form.

*I agree to publicly display my question and answer. The question and answer will be publicly available to everyone. The process may take a few minutes. Upon completion, you will be redirected to the page with the answer.

Wait...(2min)

| New topic

Report a violation of the law

Topic summary

✨ The discussion revolves around the setup of UPC cable splitters to manage multiple decoders and antenna pass-through connections. The user describes a configuration involving two splitters, with issues arising when attempting to connect multiple decoders on a single cable. Responses highlight potential causes of signal degradation, such as excessive signal attenuation due to multiple splitters, and suggest troubleshooting steps including checking connections, replacing cables, and considering the sensitivity differences between decoders. The importance of using low-loss splitters and ensuring proper signal strength is emphasized, with recommendations for specific splitter models and the possibility of signal amplification by UPC technicians.
Generated by the language model.

FAQ

TL;DR: Pixelation on multi‑split UPC lines often stems from 10–12 dB splitter loss; "It looks more and more like some kind of ailment of M2." Verify by feeding each decoder directly and prefer low‑loss splitters. [Elektroda, Anonymous, post #18165327]

Why it matters: This FAQ helps UPC/Horizon/Mediabox users run multiple decoders over split coax without pixelation or unnecessary service calls.

Quick Facts

Two splitters can impose ≈10.5–12 dB total loss; 1 dB differences rarely matter in practice. [Elektroda, Anonymous, post #18165327]
Horizon showed ~60 dBuV at the 3‑way splitter output in a stable setup. [Elektroda, Anonymous, post #18165327]
TRIS 307P = multimedia socket (2×DATA + 1×RTV); TRIS 212E = 1→2 splitter with return‑path lock on one output. [Elektroda, TELMOR_PL, post #18183778]
Switching to screw‑on F cables and a low‑loss 3.2 dB splitter yielded 100% strength / 92% quality. [Elektroda, seblas, post #18209850]
A ~10 dB subscriber amplifier can help, but asking UPC to raise levels a few dB is preferable. [Elektroda, Anonymous, post #18165874]

Why does my UPC picture pixelate after adding another splitter?

Each splitter reduces level. Two splitters add about 10.5–12 dB, which can trigger pixelation. Identical Mediabox units may have different tuner sensitivity, so the weaker one fails first. Feed the suspect decoder directly from the 3‑way splitter to confirm attenuation is the cause. [Elektroda, Anonymous, post #18165327]

How many splitters can I chain before problems start?

Keep it to the minimum. Two cascaded splitters already introduce ≥10.5 to ~12 dB loss. If Horizon shows about 60 dBuV at the 3‑way splitter, adding another 5 dB leg can push you under threshold. Use one quality 2‑way instead of extra hops when possible. [Elektroda, Anonymous, post #18165327]

Can two identical Mediaboxes have different tuner sensitivity?

Yes. "They can differ significantly both in terms of hardware and soft." One unit can be less sensitive or even faulty. Swap decoders between outlets to isolate the weak one. If one works everywhere and the other does not, service the weaker box. [Elektroda, Anonymous, post #18165327]

Why doesn’t my TRIS “tee” work like a normal splitter?

Those TRIS units are multimedia crossovers, not generic tees. When used as a regular splitter, they may not be wired as you expect, so results disappoint. Use a true 2‑way splitter for two TVs/decoders. [Elektroda, mieszkaniec, post #18166001]

What exactly are TRIS 307P and TRIS 212E?

TRIS 307P is a multimedia socket with 2 DATA outputs and 1 RTV output. TRIS 212E is a 1‑to‑2 splitter terminal that blocks the return path on one output. Choose based on whether you need data/modem separation or simple splitting. [Elektroda, TELMOR_PL, post #18183778]

Which 2‑way splitter models work well with UPC?

A quality RF splitter with return‑path support works best. Technetix Wco‑Line ED‑02 is a solid pick. Expect around 5 dB with TRIS‑type units; minimize total loss by limiting split counts. Avoid no‑spec clones. [Elektroda, Anonymous, post #18165327]

Is a 0.6 dB difference between splitters noticeable?

Not really. Comparing 4.0 dB vs 4.6 dB parts, "0.6 dB is no difference." Focus on clean wiring, fewer splits, and good connectors. Those changes beat tiny attenuation deltas every time. [Elektroda, Anonymous, post #18165874]

Will an amplifier fix pixelation?

A subscriber amplifier with about 10 dB gain can restore margin after splitting. However, it costs extra and adds complexity. If UPC can raise your level a few dB at the source, that is cleaner. Ask for a technician visit first. [Elektroda, Anonymous, post #18165874]

How do I troubleshoot pixelation step‑by‑step?

Feed the problematic decoder directly from the 3‑way splitter (BSS3) and test.
Swap decoders on the same outlet to check sensitivity differences.
Open the Mediabox diagnostics tab and verify level and quality readings. [Elektroda, Anonymous, post #18165327]

How do I view signal stats on Horizon?

Access the Horizon interface through a web browser to view signal details. Use it to capture before/after readings when you change splitters or cabling. [Elektroda, seblas, post #18164728]

Does Mediabox show diagnostics?

Yes, but it is limited. The menu may lack a full diagnostics page. Users access a test on the last channel to view strength and quality percentages for quick comparisons. [Elektroda, seblas, post #18165625]

Do pass‑through wall sockets cause issues?

They can add loss. In the thread, the decoder worked via the plate but pixelation was “terrible.” Bypassing by linking input to output removed the plate for testing and comparison. Favor direct runs when possible. [Elektroda, seblas, post #18164728]

Can better coax cables really help?

Yes. Switching from push‑on leads to screw‑on F‑connector cables, plus a low‑loss 3.2 dB splitter, removed pixelation. The setup then showed 100% strength and 92% quality. Good connectors improve stability. [Elektroda, seblas, post #18209850]

When should I call UPC for a level increase?

Call when wiring changes do not help or measurements are needed. A technician must verify and adjust levels. “You will not increase the signal strength by yourself.” [Elektroda, Grzegorz740, post #18179245]

Am I allowed to modify UPC wiring in my flat?

It depends on your contract. Before changing splitters, sockets, or adding amplifiers, check what UPC permits in‑premises. If unsure, contact support to avoid terms violations. [Elektroda, Anonymous, post #18164582]

Generated by the language model.