CurtPalme.com Home Theater Forum

jeffslife · Joined: 17 Apr 2010 Posts: 4190 Location: ohio usa

I have been working on magnetic focus for days off and on. The edges are almost impossible to set, at times I feel like
I am just geussing and hoping. Then when I go back to my picture source ( BD ) the convergence is WAY OFF.
I am going to start over AGAIN. What I want to know I geuss is should I have a source (like BD ) connected when I
adjust the DOTS or disconnected. Does it matter at all?

**Curt Palme** · Posted: Mon Oct 25, 2010 2:09 pm Post subject:

Yes, always have a source connected when doing any adjustment on any data grade CRT.

jeffslife · Joined: 17 Apr 2010 Posts: 4190 Location: ohio usa

OK now for the REALLY stupid question , does the BD have to be playing? Or just turned on?

**Curt Palme** · Posted: Mon Oct 25, 2010 2:14 pm Post subject:

I'd run it to make sure the same memory location is used every time.

jeffslife · Joined: 17 Apr 2010 Posts: 4190 Location: ohio usa

THANKS Curt.

cinema mad · Joined: 25 Nov 2009 Posts: 219

I have the blu-ray playing but I am using 24p then doubling to 48Hz with my VP.
If your setting up the G70 for 1080p 60Hz then its better to have the Blu-ray playing,
I just start the player then go off the sound so I know when to press enter to start the main movie then I start
the projector so its not trying to sync onto different frequencys..

Cheers..

jeffslife · Joined: 17 Apr 2010 Posts: 4190 Location: ohio usa

OK, before I start again is there any way to make the edges easier to see? I have tried to change the edge focus to get it as sharp as possible but the edges are still very much (compared to the rest of the screen ) out of focus.
would using RGB SIZE and shrinking the screen help at all?
Is there anything that would help at all?
Could the focus on the inside of the pj be loose or off proper adjustment, I only ask because the edges are so far out of focus.

**AnalogRocks** · Posted: Mon Oct 25, 2010 4:52 pm Post subject:

lens flapping??

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Wait Curt, the G70 is a Data Grade PJ? I thought it was for HT use mainly so it fall into the Graphics grade.

Maybe the BD made you think he was talking about a Barco Data PJ, BD is for Blu ray Disc.

Athanasios

ecrabb · Posted: Mon Oct 25, 2010 7:07 pm Post subject:

The G70 is definitely graphics grade... I assume Curt meant to use an external source with a data grade or better projector.

SC

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Well on a marquee you do the dots with the lowest internal Pattern. And doing the dots will move the grids. In a G70 the focus coils can not me moved so the
convergence will have to be redone I would assume. In a Marquee with stock focus coils you can loosen the focus yoke to re align the grids.

I know its much easier in a G70, all electronic .

Athanasios

andreas · Joined: 31 Mar 2010 Posts: 92

aha, so when adjusting this on a marquee i should not use 1080p resolution? should i instead use a dvd when adjusting astigmatism? i mean, the dynamic adjustments are affecting all memories on a marquee so i cant do a different astig for dvd and bd, right?...

as someone wrote it worked fine to recenter the grid by loosen the focus coil and move it by hand.... your problem sounds like bad lensflapping. is the machine perfectly straight to the screen?

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

andreas · Joined: 31 Mar 2010 Posts: 92

aha, thanks! well if it is global i cant fine tune my dvd setup with astig... ive never even checked out the internal frequency menu! i know there is one but im not soure what it does, i have not read about it in the training manual. i think ive made good results with the cpc magnets anyway, no flaring in any direction anymore and nearly perfect roundness is ashived but the pattern still moves a little bit when going from under to overfucused.. the red looks razor sharp now, is it normal that the red looks even sharper then green? or is that because i have not reached maximum focus on green? perhaps i should start a new topic instead, i would realy appreasiate if you would look at my test patterns and give your opinoion.

AFryia

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

MikeEby · Joined: 24 Jun 2007 Posts: 5237 Location: Osceola, Indiana

This is what I did....First get electronic/magnetic focus right then move to optical. I mounted a white card on a tripod and moved it closer to the projector so I could see the dots easier. Focused the lens in that area only. Then performed magnetic focus adjustments. The final step was to do the optical focus on the actual screen. I used a pair of binoculars while adjusting the lenses this too would help you see the dots easier.

Mike