ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
Hallo to everybody
I was completing my masterlink connection homework. Thanks to the support I received in the forum, I sorted out my problems with the audio part. Now I have some small issues with the video distribution.
My Video Master is a BEOVISON 8-40 and I would like to get the video on my AVANT 28.
The plan is to bring the RF OUT of the BV8 to the SWITCH Matrix of the satellite that has a Terrestrial input and in this way to distribute the signal over the entire house. Unfortunately during the apartment refurbishment the additional coax I had requested was forgotten. My plan B is to use my CAT 7 wiring as replacement for the COAX ( I found some BALUN up to 900 MHz bandwidth). Before investing on that ( and potentially also on same signal amplifier) , I was willing to test the concept with direct connection of the RF out of the BV8 to the TV input of the AVANT.
I have to admit that the first tentative was not successful ( I have some doubt on the cable I used as it may be 50 Ohm instead of 75) but also I am not sure if the RF out will provide a signal strong enough for the TV input.
In addition ( due to the room set up ) it is very difficult to identify the correct input on the AVANT. ( I have to plug the connector trusting my hand )
I do not use the TV input since a while ( only sat receiver) and I have two connector close to each other . I had assumed that the FEMALE is the TV and the male is the RF OUT of the AVANT.
Any suggestion is extremely welcomed.
Regards
alfio:I have to admit that the first tentative was not successful
did you set up the "broadcast" frequency on the BV8-40, and did you then tune the Avant (or the in-between unit) to that frequency ?
BeoNut since '75
Hi Elephant
I did all the aspects related to the BV8 as you indicated , the RF OUT was on AUTO and I changed to ON.
On the AVANT I was just scanning the TV as there are no other signal being transmitted ( I do not use cable TV or DVB-T).
The cable I used is a 50 Ohm coax that I have around ( ~30 m), sue to the impedance mismatch there is an additional loss but should not be a dramatic one. I was also assuming that the connector to be used on the avant ( due to its position is hard to see on the back) is the Female one .
I was not able to see any signal around 599 Mhz.
I may try with another TV ( not B&O) to double check.
alfio: Hi Elephant I did all the aspects related to the BV8 as you indicated , the RF OUT was on AUTO and I changed to ON. On the AVANT I was just scanning the TV as there are no other signal being transmitted ( I do not use cable TV or DVB-T). The cable I used is a 50 Ohm coax that I have around ( ~30 m), sue to the impedance mismatch there is an additional loss but should not be a dramatic one. I was also assuming that the connector to be used on the avant ( due to its position is hard to see on the back) is the Female one . I was not able to see any signal around 599 Mhz. I may try with another TV ( not B&O) to double check. Regards
Hi - I am electrically inept so I can't comment on the coax cables ... but I do believe that you have to trigger the BV8-40 to start "broadcasting", did you fire a Beo4 command at the Avant for a source that was on the BV8 ?
No actually I did not try to trigger a command via ML.
I had read that with the modulator ON it was always broadcasting, while in AUTO mode it was doing if the command was received.
I will try again sending the specific command.
Do you know if the signal level is sufficient for being seen by the AVANT TV tuner without an amplifier ?
Hi alfio,
Are you sure that your Avant uses the signal at 599 Mhz? I have a MX4002 as LinkTV, and I can only make it see my MasterTV (also a BeoVision8-40), if I set the link frequency to 615 Mhz. You know that you have to press 'LINK' before pressing TV of DTV on the LinkTV? Could you draw your B&O setup on a piece of paper or on your computer, and add it to this topic, so we can see how you've set it up. Might be easier to see where the problem is. :-)Regards Claus
As I mentioned I was not so much sure about the fine tuning of the LINK and its frequency, I was more interested in checking the quality of the Video signal ( as I assumed my main problem being the Coax connection ).
I may have made some assumptions not necessarily correct:
I include the wiring schema
alfio:As I mentioned I was not so much sure about the fine tuning of the LINK and its frequency, I was more interested in checking the quality of the Video signal ( as I assumed my main problem being the Coax connection ).
I had the impression you could detect no signal -- the sentence above implies you were able to detect some form of inferior signal - is that correct ?
I have included your schematic below as an image (clicking on it will show it in a separate window) ... you have a very nice set-up !
I hope we can get it working for you :-)
You are right , I did not detect any signal ( not even a snowy image).
My next step is to use an appropriate Coax of 75 ohm ( during the week end)
First step I'd try to connect a TV directly to the BV8 with a Commons 75 Ohm coax.
Set frequency to default 599 MHz - keep RF modulator to ON.
If this works try your cable with the same TV.
Next step - connect the Avant. Avant should be set to V.OPT 5 or 6 ( link TV).
As far A's I remember, an RF link amplifier should be connected...?
Stefan
Actually on the BV8-40 I noticed a strange thing.
When I access the menu and set -up the modulator to ON and save teh new set up, I got the confirmation. If I access it again I find the modulator set back to AUTO.
Is this normal ?
Hi Stefan
the suggestion helped me to come up with a solution.
I tried with a normal TV and in doing that I left the BV8-40 in MENU mode with the modulator on ON. in this mode I saw on channel 37 ( 599Mhz) two Vertical Bars. As soon exit the menu the bars disappeared and went back to white noise. This was an evidence that the modulator always switch off if not commanded via BEOLINK.
I then tried with AVANT using the LINK command and immediately I got the video signal ( very noisy but visible). So now I can proceed with the next steps of using BALUN broadband for my CAT7 wiring instead of the coax and the necessary amplifier.
Thank you all for the support.