CurtPalme.com Home Theater Forum

[jkruger]

Moby,
Do what macgyver655 says, It's the best way to set up your pj. I have done it that way a half dozen times and it really does work well.
No need for a formula, just maximize the rasters first and then set the distance to match the screen size.
If you are not comfortable doing it yet just ask more questions and we will try to walk you thru it.

Some of the negativity here scared me at first too. Now I guess I just try to flip it back at them or just ignore it.

[Person99]

[Person99]

[macgyver655]

Funny Dave how you chimed in on my negativity comment when I didnt mention any names. Plus your subsequent post told him to get a pro or sell it. How is that helping him other then making him feel incompetent. If he wants to take on the challenge then good for him, but telling him he is unable to just doesn't sound right. And if you want the credit for the throw distance post, you can have it. I'm not looking for any credit on here. I just enjoy helping others who are asking for it.

[macgyver655]

Plus if you want me to believe that giving any negativity to someone is helping them, then I'd have to be in a fantasy world.....................................

[macgyver655]

[tommo2]

Nearly every newbie has the same question.
Here is a response I made to a similar topic a while ago. Just do the first few steps with the projector on the floor until you can calculate approximate throw distance. Then, if you can set it up on the ceiling at this distance you can go from there:


The very first thing you need to do with that projector is delete all memory blocks.
The barco projectors store settings for different resolutions in memory, and once you have set a couple of different resolutions, it uses this info to "guess" convergence and geometry settings for a different resolution.
If you delete all the old stored data, it will make the setup of new resolutions so much easier.

All settings should be now at default (50)

Okay, go into service menu and select "delete all blocks". Next, decide what resolution you will be running (probably 1080i or 720. Lets say 1080i for now. Do not use the internal patterns for geometry settings, they are never accurate.
Send a 1080i signal 60hz to the projector.
Ensure the projector is perfectly square and centered on your screen.
Increase H width and V height (think this is called V size) to 90. Project a green screen. Do a quick mechanical focus on green. Move the projector away from or towards your screen until it fills the screen. (ignore and skew/keystone for now). Remove the green lense and increase raster size until it is 1/4 inch away from phosphor edge and perfectly centered. Now put the lens back on and move projector back/forth until screen is filled. Focus again.
Do a quick geometry setup on green, and increase h and V size to 95. Now move projector back/forth until the screen is filled again. Do green focus again. This is the projectors final distance from screen, and ensures you use as much phosphor as possible. Leaving V and H size controls at 95 allows a little adjustment, set to 99 would be ideal but leaves no room for tweaking. Also, setting the raster size 1/4 inch from the phosphor edge maximizes phosphor usage, without risking cracking the tube due to electron beam off phosphor.

Now you can follow the barco guided adjustment mode which is quite good for a newbie. You should not have to adjust green much at all.
Once setup is complete you can tweak geometry/focus again and againh to get it perfect. This will become so easy once you have done it a few times.

Then do electronic beam focus, G2 adjust, and the pic will be amazing. Do not get rid of that pj. A digital for $2000 will not be a patch on that projector.
Look at performing greyscale adjustment at some point aswell. Trust me, as soon as you have done the intiial setup, you will be amazed at the picture. Then you will tweak a bit more as you understand more and the picture will be evcen better.
Then you will play with astig/g2/grayscale and be blown away by the improvements. Then gamma adjust, schiempflug ... etc etc etc

Thats the beauty of CRT. Even a poorly setup pj can look cool, but the more you tweak the better the results. And as you learn more, it will all become easier. Something you were afraid to attempt at the start will not be a problem to adjust later on. And it is so much fun to do a few tweaks and see the results. It really makes that big a difference.

Don't be put off by the large number of adjustments. Just do the initial setup, and when you have a decent picture you can tackle the other adjustments one by one.

[draganm]

there was a recent thread on AVS that wound up being 7 or 8 pages long trying to coach a guy on how to simply make the raster square on a sony 1031. never mind the convergence. Clarence even posted multiple diagrams showing exactly which pots to turn etc. After all that the guy wound up hiring a pro which probly cost 10 times the value of the projector but he was determined to run that 1031.
So if some simple and honest advice to hire someone is going to be labeled as nagativity here then you guys have at it. Type away.

[macgyver655]

[JustGreg]

[tommo2]