25 replies to this topic

[Akura]

Hello,

I have a problem with my picture quality on my Ultimo with two DVB-C tuners. I turn in OpenPli with latest updates. The image pixelated at times on the HD channels. The signal looks bad with a SNR 60% AGC 75% BER ~ = 1,640,000 on all chanels (HD and SD). I've tested a VTI 4.1 and i've the same problem. I plugged other boxes (Azbox Premium+, Dreambox DM 800) and I have no problem. The signal is exellent with a SNR 75% AGC 95% BER = 0 ! Maybe a driver problem ? What can I do or test to solve this problem ?

Thank you.

Best regard

(Sorry for my poor english)

[Roodkapke]

Seen it here on the Ultimo too.
On satellite and C and mostly on HD channels, so my guess is the drivers are screwing up things.

Sometimes half the screen gets frozen, like there's a buffer which got stuck.
Sometimes it's very present and annoying, sometimes it's looking to be okay.

[Rob van der Does]

VU+ is very much interested in this (possibly FPGA and/or driver related) problem. They are in the process of a survey, and they would appreciate any information on the box setup and the tuner-usage at the moment such a problems shows.

[Trial]

Hi,
can you write the frequencies of the cable channel that have problems? Can you watch what is happening in the room with the STB when there are problems? I mean switch on/off a device, WLAN reception or micro wave.

I have problems on 130MHz and when I switch off a certain lamp.

ciao

[Roodkapke]

Simply watching 1 channel on satellite gives disturbances.
It gets worse if a second tuner kicks in, either streaming or recording.

Setup is simple.
2x S2 (1x 4 lnb's, 1x 11 lnb's, all connected through a multiswitch).
1x C, Ziggo Nl.

It seems to be connected with the transfer rate somehow.
If i watch a proper HD channel, it gets worse.
FTA channels respond the same, so softcams and so on can be left out of the equation.
I don't use any kind of EPG import or other weird plugin's, it's virtually a clean box.

[Rob van der Does]

What is the location-order of your tuners (slots used)? Does the above mentioned behaviour change if you change the order of tuners?

[Akura]

My setup :

VU+ Ultimo OpenPli 2.1 :

Tuner A : DVB-S2 on a dish with dual lnb
Tuner B + C : DVB-C, VOO, Belgium

I use CCcam 2.3, but the HD channels are FTA. Other plugin : Project Valerie, CoolTVGuide and Crossepg.

Several frequencies for HD channels with problems : 418 MHz, 410 MHz

Other boxes (Azbox Premium HD+, Dreambox 800) on the same cable have no problem.

[Roodkapke]

tuner A dvb-s2
tuner B dvb-s2
tuner C dvb-c

And no, i'm not going to open my ultimo and switch tuners.
It's the receiver witch is used for watching TV in the living-room.
It used to be no problem, so i guess they are/should be able to reproduce this behavior themselves.

[Rob van der Does]

Nope, VU+ claims that reproducing these problems is very awkward. And these problems have existed from the very beginning.

Edited by SatKiekerd, 6 April 2012 - 14:58.

[Akura]

How to provide this information at VU+ ?

VU+ is very much interested in this (possibly FPGA and/or driver related) problem. They are in the process of a survey, and they would appreciate any information on the box setup and the tuner-usage at the moment such a problems shows.

[Rob van der Does]

The contact information is on their website (see http://www2.vuplus.c...lus-articles/68 ).

[Wiggy]

The contact information is on their website (see http://www2.vuplus.c...lus-articles/68 ).

 

I have been trying to contact VU+ for over a year due to a similar problem with slot 3 on my Ultimo.

The issue first arose after the FPGA update.

I originally had a DVB-T\C tuner in slot 3, but following the update the pixellation problem started occurring.

I swapped around the tuners in Slot 1 (DVB-S2) and Slot 3, but the problem remains with Slot 3.

 

I have emailed VU+ support on 3 occasions and used the problem submission form on their website, but they have never once acknowledged any communication from me.

I have 3 VU+ Duos and one VU+ Ultimo in my home.

 

Is there any way you can help me to get in contact with them?

[Pr2]

Hi,

 

When I had the VU+ Duo² I had exactely the same problem on the same cable provider Voo with the same symptom. Same cable works fine in Sundtek USB stick and, Azbox with DVB-C and Samsung TV.

This is definitively a bug in VU+ DVB-C tuner, I also open up a ticket at VU+ and propose to help them but no answer at all. Now I have no more VU+ so I can no longer help them.

 

A possible issue is that the signal is too strong and saturates the tuner so we should try with an attenuator on the line, but since I don't have such attenuator I could not test it.

 

Pr2

[Wiggy]

A possible issue is that the signal is too strong and saturates the tuner so we should try with an attenuator on the line, but since I don't have such attenuator I could not test it.

 

Pr2

 

When I had the DVB-T\C tuner in slot 3, I put an attenuator on but it did not fix the problem.

 

And the problem is not confined to DVB-T\C.

 

I swapped in a perfectly good DVB-S2 from Slot 1 and it displays the same problem.

And the DVB-T\C is now working perfectly in Slot 1.

 

I am very disappointed with the total lack of response from VU regarding this.

[Pr2]

Hi,

 

It seems that this problem is well-known in Germany and that a capacitor needs to be removed from the tuner placed in slot-3 in order to fix it.

You should search on german speaking board for the solution.

 

Pr2

[Akura]

It seems that the tuner dvb-c VU+ are very (too) sensitive. My provider has worked on the network and since I have no more problems. I have no pixelation but the tuner always indicates a poor signal quality with a high BER. On my Azbox, the signal is excellent with BER = 0.

[Pr2]

According to me using very sensitive is not really the correct term to qualify the VU+ DVB-C tuner, especially if you compare it with other brand DVB-C tuners on the same cable! The tuner was connected just after a signal amplifier installed by my cable provider to split the signal to 4 TVs, on my installation and the same cable is working fine on Azbox, Sundtek DVB-C stick and Samsung build-in tuner so on 3 other brand devices.

So the VU+ DVB-C are very sensitive to problems that's the fact. 

[Trial]

Hi,

forget BER on VU+ tuner. Neither DVB-S2 nor DVB-C are showing real BER values.

 

ciao

[Rob van der Does]

Is there any way you can help me to get in contact with them?

Done (although I'm not sure they will be impressed by me ).

[Wiggy]

Is there any way you can help me to get in contact with them?

Done (although I'm not sure they will be impressed by me ).

Thanks so much!

 

I really appreciate your help.

 

I am less than impressed by them :-)