CurtPalme.com Home Theater Forum

[416ray4538]

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Thanks
I have to work tomorrow and tomorrow night seems like a good time to continue.
I'm guessing you have the same PJ.
Thanks again

[incova]

4600 HD, its the same thing, I noticed you ceiling hung it fast did you get your measurements precise so its square to the screen, I have yet to hang mine but I am getting there, just have to change out the red c element and my colour is set then its going up.

[stefuel]

OK, broken record. First things first. If you havn't taken the time to mount it correctly to the screen, EVERYTHING after that will be a struggle.

Yes, the internal test patterns suck......but, they are good enough for lens pointing and focus when using the internal HELP screens for setup.

The internal HELP screens are over simplified and many here can't use them without reading something else into them.
If you put aside what you THINK you know and just do WHAT YOU ARE TOLD by the help screens, you will end up with correctly pointed and focussed lenses. Once you have the projector mounted, lenses pointed and focussed you're done. Different scan rates don't effect pointing and focus.

When you're done with that, you can use any external patterns you want and tweak away.

Note: Just don't confuse electronic focus and mechanical focus. That's a whole different beast to tackle.

[416ray4538]

[416ray4538]

[stefuel]

I am late for work. I'll explain this tonight when I get home.

[416ray4538]

Sorry to hear the site server pissed you off. Thanks anyway for your effort.
I'm trying to sort it out myself and a few definitions would help if anyone knows these as Ampro uses them.
Convergence: I would expect this to mean the same as registration ie) all the colours print on the same point however Ampro uses both terms.
Registration. On a printing line it means getting the paper to stop at the same place for each colour so how is that different from convergence.
The manual also calls for turning registration on and off for some adjustments but is unclear in the chapter that deals specifically with the adjustments followed in the help menu. I appreciate that using the help menu this is done for me but using an external test pattern I don't know.
The manual also mentions static and dynamic registration but again is unclear as to the definitions.
Thanks

[tse]

Registration and convergence mean the same thing, as far as an Ampro projector is concerned. I was told that the old style TV type cameras had three video tubes one for red, one for green, and one for blue. Like a CRT projector but with the opposite job. So they had to be "registered" for the proper picture. Somehow that term started at ESP and continued on at Ampro. I'm pretty sure that convergence is the proper term.

"Static" registration means shifting the complete color vertically or horizontally. "Dynamic" registration refers to moving a part of the image with some point remaining stationary, or everything that isn't static.

Scott

[416ray4538]

OK..... so turning registration on or off while making an adjustment changes what??

[tse]

You would turn registration off to make mechanical adjustments. Rotate deflection yoke to line up the center horizontal lines, adjust the vertical sizes of the three colors, adjust the width coils so the three horizontal sizes are the same. Maybe even rotate the big focus magnets to center the rasters. Once all that is done turn on registration and adjust the green geometry then converge the red and blue to the green.

Scott

[416ray4538]

Thanks

[416ray4538]

It's starting to make sense still, it would be nice to see a step by step from one of you.
Thanks

[stefuel]

For the time being, forget about using external test patterns and take some baby steps. You need a better undersanding of how the convergence controls interact with what's on screen first. You said you have gone through the guided registration in the help menu. If so and you followed the instrictions, you should have a watchable picture. Fire up the projector and watch a movie for a hour. then while the movie is running, press 4 [TEST] look at the test pattern. While that pattern is up do a 55 [CODE] (registration OFF). If you did the guided registraton correct, the edges will be out of convergence but the center of the screen should be OK. Try that first and get back to me with the results.

[416ray4538]

Red shifted slightly to the right, blue shifted slightly to the left.
Both effects happened at the left and right of the screen only, the effect became less and less toward the center of the screen, at the centre all three are still together.
Once again let me take this opportunity to thank you for the effort you made that was frustrated by the server or whatever.

[stefuel]

Next step. Whith the projector warmed up and in 4[TEST], (registration ON) press the step button to cycle through the various test patterns until you see a dot pattern. The center of the test pattern will be highlighted. Shut off the blue gun. Press the shift button and then the red button. Look at the most center dot and use the arrow buttons to move the center red dot exactly over the green dot. Turn on the blue and shut off the green. Hit shift again and then the blue button. Shift the blue center dot exactly over the red. The center (with registration on) should be perfect. We will then move onto the size button.

[stefuel]

Oh ya,
Probably at this point you are scratching your head wondering why I'm telling you to converge the blue over the red instead of the green. This is not a AmPro thing. It's generic to all projectors. It is much easier on the eyes to set the blue over the red than it is to set blue over green. Feel free to try it though but I think you'll like it doing the B over R.

[stefuel]

OK, now with all three colors on AND the registration ON (registration will remain on from now on), you should have a perfectly converged center. Turn off the blue. Tap the [SIZE] button and then the red button. You will be adjusting the red in one of four areas on the screen (top bottom left and right) and will be high lighted as to which area you have selected with the quadrant buttons at the bottom of your remote. These areas are the next closest to the center. After that, stay with the red and tap the [LIN] (linearity) button. Again top, bottom, left and right. After that tap the [edge] button. That does only the left and right edges. Repeat these steps for the blue over the red. After that you will be moving on to the corners.

[stefuel]

By now you should be getting used to seeing the area that is being adjusted as being high lighted. That does not happen with external test patterns and why I suggest staying with the internal ones for now.

Now I've just realized that I missed a step but it's not to late. Press the [STEP] button until you have a center cross then press the [SKEW] button. Use the left and right arrows to move the red over the green on the vertical line. If the red has a bow in it and does not over lap the green, that's what the bow button is for. When done with that go back to skew and the right side button. Use the up and down arrows along with the bow button to match up the horizontal lines. Do the same for the left side then do the same for the blue.

Next step will be the corners.

[416ray4538]

[416ray4538]

I've been away from my computer for a while; everybody wants their A/C running.
I think I've found the root of my picture problem:the red and blue dynamic focus controls make no noticeable change to the picture.
Does this ring any bells for anyone or are my eyes that bad?
Thanks