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JVC RS-1 Convergence

post #1 of 25
Thread Starter 
I used the crosshatch pattern from Casion Royale and I have a 1 pixel (Red)MC on the right side of the screen.
Then I used the crosshatch test pattern from JVC secret service menu, I have at most half a pixel (Red again)MC on the left side of the screen, right side have about 1/4 red MC. Both are white crosshatch pattern.

So which one do I take as reference? Adjusting pixel shift for either Casion Royale crosshatch or JVC service menu crosshatch would not improve the MC.

So far the JVC service menu pattern gives me better convergence. I am sticking with it as reference, am I doing the right thing?
Thanks for the tips.
post #2 of 25
The JVC test pattern would be far more preferable than the Casino Royal disc.
post #3 of 25
Thread Starter 
Quote:
Originally Posted by vigga View Post

The JVC test pattern would be far more preferable than the Casino Royal disc.

If you dont mind me asking, why is that so? I assumed jvc set the convergence in the factory using this pattern rather than inputing a crosshair pattern from a source?
post #4 of 25
Actually I struggle to see why either should be different to each other. Even scaling wouldn't affect apparent misconvergence. Nevertheless I would also choose the JVC test pattern. Sounds like you are well within tolerance!
post #5 of 25
Because using Casino Royale there are too many ifs between the screen and the test pattern source. For example what is your source, what firmware are you running on it, does it have any know display bugs, is it set to over scan, is it sending the signal over analog or digital, was the disk encoded correctly... All this may or may not matter you're just left with a lot of speculation. There are fewer things that can go wrong with an internally generated pattern or one generated by say an Accupel signal generator.
post #6 of 25
Thread Starter 
Thanks Guys!
I will use jvc internal test pattern as reference from now.
post #7 of 25
Quote:
Originally Posted by kaydee6 View Post

I used the crosshatch pattern from Casion Royale and I have a 1 pixel (Red)MC on the right side of the screen.
Then I used the crosshatch test pattern from JVC secret service menu, I have at most half a pixel (Red again)MC on the left side of the screen, right side have about 1/4 red MC. Both are white crosshatch pattern.

So which one do I take as reference? Adjusting pixel shift for either Casion Royale crosshatch or JVC service menu crosshatch would not improve the MC.

So far the JVC service menu pattern gives me better convergence. I am sticking with it as reference, am I doing the right thing?
Thanks for the tips.

I'm sure its been said but - How does one access the service menu?

thanks
post #8 of 25
Thread Starter 
Quote:
Originally Posted by Stevie C View Post

I'm sure its been said but - How does one access the service menu?

thanks

Press these keys on the remote in the following order, in quick succession..

Up
Down
Right
Left
Enter
post #9 of 25
A pattern from an external scaler 1:1 pixel matched would also work
post #10 of 25
Thread Starter 
Quote:
Originally Posted by vigga View Post

A pattern from an external scaler 1:1 pixel matched would also work


You would need an external scaler for it?

I still don't understand why MC from the pattern of the disc is different from the jvc internal pattern..

They are in the opposite direction, MC from the pattern of Casion Royale disc is like 1 pixel right (Red) on the right side of the screen, left is perfect.
MC from jvc internal pattern is 1/2 pixel (Red) left on the left side of the screen, right side is less than a 1/4 out to the right (Red again).
post #11 of 25
I haven't gone into the service menu yet on my HD-1 and looked at the crosshatch pattern. Eventually I will, but just haven't got around to it.

However, the only time I notice any color convergence issues is when there is moving, white text such as rolling credits at the end of a film. There doesn't seem to be an issue if say, white text on the screen is stationary. Have others noticed this? It this just inhearant to the HD-1/RS-1? Or do I really need to go ahead and get into the service menu and adjust my color convergence?
post #12 of 25
With a CRT and an external scaler, one would use the test pattern in the external scaler rather than the built in CRT test patterns. The reason would be the projector is projecting at the output resolution rate of the scaler and not necessarily at the built in test pattern rate. My projector has several selectable rates for the test patterns. None would match say 1080p 60. So since I watch most stuff at 1080p 60, I use the test pattern built into the scaler. Gives me better convergence. Given digitals only have one NR and the patterns built in are at that rate, it would appear logical to use the built in one. But I really don't know.
post #13 of 25
Quote:
Originally Posted by Rutgar View Post

... the only time I notice any color convergence issues is when there is moving, white text such as rolling credits at the end of a film. There doesn't seem to be an issue if say, white text on the screen is stationary. Have others noticed this?...

Many users have observed this phenomena. I think it was originally reported by Mark Petersen during the NCAA basketball games. The referee uniforms would shimmer during movement. You can also see it on both horizontal and vertical scrolling text of the right size and scroll speed. It is definitely a fault in the RS1... no resolution or even acknowledgment of the problem from JVC to date.
post #14 of 25
What purpose would be served by an acknowledgement?
post #15 of 25
I just did a wounderfull RS-1 install today couldnt go more smoothly.

I also have a slight red missconverged red BUT with the JVC cross hatch from the service menu its pretty bad looking. The problem with the JVC test patterns is there basicly worthless because you cant make adjustments while they are displayed on the screen.

When I use my THX set up disc and use it to set color , brighteness and convergence I can get it about 99.99% converged. The red is still a little bit questionable right at the screen.

When you move back to the seated area its almost impossible to see the red drift so as far as Im concerned its good. Much needed to say that you should converge from your intended source that you will be viewing not the test patterns.


ALSO I found that making some convergence adjustment in the service area then in the user area helps quite a bit then just doing it all in one place, at least to me it did.
post #16 of 25
When I use my THX set up disc and use it to set color , brighteness and convergence I can get it about 99.99% converged. The red is still a little bit questionable right at the screen.

Victor,

What disc has the THX set-up on it?

Thanks tony
post #17 of 25
Quote:
Originally Posted by tjgar View Post

What disc has the THX set-up on it?

Thanks tony

I use T2 on BR.
post #18 of 25
Quote:
Originally Posted by Vic C View Post

I just did a wounderfull RS-1 install today couldnt go more smoothly.

I also have a slight red missconverged red BUT with the JVC cross hatch from the service menu its pretty bad looking. The problem with the JVC test patterns is there basicly worthless because you cant make adjustments while they are displayed on the screen.

Actually there is another way and I found out by accident. Its not 100% but very close and easier.

Ben
post #19 of 25
And that way is ...?
post #20 of 25
Quote:
Originally Posted by RonC View Post

And that way is ...?

Move the pj around the room and place it where the convergence is optimal..
post #21 of 25
Quote:
Originally Posted by Ettepet View Post

Move the pj around the room and place it where the convergence is optimal..

On paper, that sounds good, but most cannot do that.
post #22 of 25
Quote:
Originally Posted by Ettepet View Post

Move the pj around the room and place it where the convergence is optimal..

I realize you're half-kidding, but I actually had a lot of luck fine-tuning my red convergence by making surprisingly small lens shift adjustments and subsequently moving the projector only a small amount. I reported my procedure in this post:
http://www.avsforum.com/avs-vb/showt...3#post10471143
post #23 of 25
Most pj's with lens shift do exhibit some red flaring at the extremes. Zoom the pj in on the screen so it is small as possible and with a white crosshatch move the lens shift to the extremes noting where the worse red flaring is and then find the best spot. If you have the flexibility in mounting, this will be the best location to set it up. Also, slight focus errors may show this as well.
post #24 of 25
Quote:
Originally Posted by 5mark View Post

I realize you're half-kidding, but I actually had a lot of luck fine-tuning my red convergence by making surprisingly small lens shift adjustments and subsequently moving the projector only a small amount. I reported my procedure in this post:
http://www.avsforum.com/avs-vb/showt...3#post10471143

I was kidding, and half expected I was half right as well.. (already knowing the topic you referred to)
post #25 of 25
Quote:
Originally Posted by 5mark View Post

I realize you're half-kidding, but I actually had a lot of luck fine-tuning my red convergence by making surprisingly small lens shift adjustments and subsequently moving the projector only a small amount. I reported my procedure in this post:
http://www.avsforum.com/avs-vb/showt...3#post10471143

I was kidding, and half expected I was half right as well (already knowing the topic you referred to).

Thanks for sharing your trick..
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