CurtPalme.com Home Theater Forum

[SGIforever]

I've done a small test setup of Barco Vision 701s, but I'm having problems when I feed I anything higher than 480p. I'm running it at 848x480 for now.

I'm using a PC with a Quadro FX1300 card, DVI-VGA adapter, VGA-BNC cable, input source 3, and the nvidia controlpanel to experiment.

I used the Custom Resolution Utility described in this post https://www.curtpalme.com/forum_archived/viewtopic.php@t=33236.html
to add 1920x1080i@29.97 to the resolutionlist. I put the number 29.97 for interlaced, which I hope is correct.
I get a picture on my testing CRT monitor.

It locks on, and I have picture ... but it looks inverted. All that is supposed to be white is black.
I have to look into the lenses to see anything. I tried to switch sync polarity, but it didn't change the output.
I think -/- sync polarity is it correct for a 701s, and I have tried all combinations.

Actually, the picture is brighter at the top and bottom, but I don't know if it's because it warps around on these edges.

There is a line-doubler in the unit. Is it trying to line-double any interlaced signal, and show it as 1080p?
I had a thought to remove that LIDO, but there are a lot of cables involved. I think this is a factory installed option and maybe it's not supposed to be removed ever again.

[gjaky]

A picture of the problem would really help us to guess what is going on.

[Hulio]

If you use the line doubler make sure you don't feed the projector with a progressive signal, must be interlaced.
When the source signal is progressive, just switch the line doubler off, no need to remove the hardware at all. Press adjustment --->guided ---> picture tuning ---> line doubler on/off ( press enter to toggle ).
If with the doubler switched off the problem still exist, maybe is worth to play with the horizontal phase adjustment. Extreme phase settings can also generate this behavior.

[SGIforever]

Hulio, thank you for the suggestion. I looked very hard for the LIDO option in the menu. I couldn't find it so I guessed my PJ had old software or something, but as it turns out that toggle option is not available for RGB signal.
I think LIDO is only active for s-video and component signal.

gjaky is right. Some pictures would definetly help, so I got some.
First some of the testgrid with no source, then of nvidia control panel with what I think is 1080i.
I haven't done any tuning, just "set all to midposition" and "delete all blocks". I don't know if that is why images are bent the way they are.

[SGIforever]

I have tested another newer computer. It's a laptop with HDMI and analog output.
I get a good image (HMDI+HDfury2 and analog) with the following settings in the nVidia control panel. 60Hz won't work!?
I'm sorry it's in Swedish, but I think you can guess what it all means.
When I press "Prova" (Test) the image is on for those 15 seconds I have to press "OK" to accept a successful test.
After that it returns to the custom list in which i check the box to show it in the selection list.
When I return to the selection list it is not there.

I probably made some misstake with the CRU program, maybe it was 1080p instead of 1080i, but this time I get an image. For a 15 seconds.
I tried CRU on this computer too, but not with better result.

Anyway this seems to be more of a Windows/driver/software than Barco problem.

[AnalogRocks]

[AnalogRocks]