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I am trying to know what is the optimal signal strength to be received by an STB in my case the SA 4000DVB. I use the box on Telewest or trying to. I am told that it should be around 0dBmV which is 1mV. Is this true.
If I go into diagnostic mode of the 4000DVB. This is done by removing the power from the rear of the STB and then pressing down the up and down keys togther on the front panel. Now power up the box by inserting the power lead back in and keep holding the up and down keys until the word "diag" appears on the front panel display of the STD. After that let go of the up and down buttons. On page 1 (on your TV), you will see a Receive signal value and it will be in dBmV. What is your signal??
I currently get 10dBV and its highlighted RED. I assume RED means that the signal is too high. I assume that I would need an attenuator. Any ideas. What signal do you receive?
I want to make sure that I understand all the background before I go back to telewest for them to try to solve my problem.
Re: Signal Strength on Scientific Atalanta 4000 STB
What problem are you having? It's best to let a Telewest engineer sort it out than try to fix it yourself, as if you cause any damage in the process you'll more than likely receive a call-out charge to fix it.
Re: Signal Strength on Scientific Atalanta 4000 STB
Hello
Apparently there was some work that was carried out outside my house where the cabling was messed around with and telewest had to replace the cable with a newer type. Did didn't pay for this as it was the council that caused the problem in the first place. Now at that time I was on analogue and then I went over to Digital. The digital tv did work and now after a long absence from my home no tv. My neighbour says that there was some more carried out by the council and I think this affected my signal but since I wasnt around to know when my digital service stop working and Telewest are reluctant to solve the problem without me paying. So I am asuming that I can get way with it by getting an attenuator so that i can get the signal to 0dBmV. Without knowing what the optimal signal is I cant choose an attenuator.
Re: Signal Strength on Scientific Atalanta 4000 STB
what freq is this reading from? it depends where abouts on the scale it is to the db reading, 128, 402, or 733 i think it is, cant remember without looking at my meter.
your best bet is to call out telewest and if they charge you then take the issue up with the council, it could be something like they have knicked the cable or something like that, and that could be causing the problem.
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