Sony PlayTV: tuning on second tuner causing reception issues on first tuner

Sony PlayTV: tuning on second tuner causing reception issues on first tuner

[Torgeir Veimo]

When background EIT scanning is enabled on my VDR setup, I am getting signal
disruption about every 20-21 seconds, with my sony playtv USB dual DVB-T tuner.

This seems to be caused by the second tuner retuning in the
background. I've heard that the nova-t 500 cards can have issues with
disruption when the second tuner on a card is tuning. Is this the same
type of problem?

Are there any other dual USB tuners that doesn't have problems with
tuning on second tuner causing reception issues on the first tuner?

-- 
-Tor

Re: Sony PlayTV: tuning on second tuner causing reception issues on first tuner

[Patrick Boettcher]

Hi Torgeir,

On Sunday 14 October 2012 00:25:26 Torgeir Veimo wrote:
> When background EIT scanning is enabled on my VDR setup, I am getting
> signal disruption about every 20-21 seconds, with my sony playtv USB dual
> DVB-T tuner.

In the VDR-ML-thread you said that you have 2 of those devices?

I could get my hands on the information which is date 3-4 years ago when the 
device was designed and in fact the problem you're describing existed at 
that time. It was fixed by hardware and normally should not appear in end-
user's products. However as I understand the fix can easily fail if the 
production-site a) does not  know that this problem exists and thus does not 
test it or b) doesn't care. Rumors say, that the prod-site has been 
transferred from France to China. If that is true or if your device is 
simply a runner or anything else is not clear as of now.

When did you purchase this device? If it was recently, there is a fair 
chance that exchanging it will result in a working device.

> 
> This seems to be caused by the second tuner retuning in the
> background. I've heard that the nova-t 500 cards can have issues with
> disruption when the second tuner on a card is tuning. Is this the same
> type of problem?

Most likely. No complete software-fix available.

regards,
--
Patrick 

Kernel Labs Inc.
http://www.kernellabs.com/