Hi All,

I have an NEC XG135LC. I'd like to get it to display 1080p from my DVD Player. It currently displays 720p and 1080i, but 1080p has trouble. It appears as though the picture folds on itself on the left and right. Is there some adjustment that I can make to correct this?

I realize that no one recommends 1080p on an XG, but I'd like to see for myself.

-Greg

Are there any controls on the chasis that can be dailed to correct this. Perhaps the magnets or something... I am trying to eliminate the scanlines at 1080i.

-Greg

It sounds more like it's a source issue. Try running 1280 X 1024 from a laptop to the projector. If that displays OK, then it's a source issue. THe XG 135 should lock/display well past 1080p without issues.

Hi All,

I have an NEC XG135LC. I'd like to get it to display 1080p from my DVD Player. It currently displays 720p and 1080i, but 1080p has trouble. It appears as though the picture folds on itself on the left and right. Is there some adjustment that I can make to correct this?

I realize that no one recommends 1080p on an XG, but I'd like to see for myself.

-Greg

We already answered this didn't we? You need a VP or a HTPC and custom timings.


Are there any controls on the chasis that can be dailed to correct this. Perhaps the magnets or something... I am trying to eliminate the scanlines at 1080i.

-Greg

You can make the dots into ovals with the EM astig controls, but I didn't. The field lines aren't that visible at 1080i 96hz, and when I tried 1920 x 804p I realised that the scanlines were just as visible.

It sounds more like it's a source issue. Try running 1280 X 1024 from a laptop to the projector. If that displays OK, then it's a source issue. THe XG 135 should lock/display well past 1080p without issues.

No it won't Curt. It's retrace is too long. You get foldover and raster ringing. Even stock 1080p 60hz cannot be done, you need custom timings.

We already answered this didn't we? You need a VP or a HTPC and custom timings.

The field lines aren't that visible at 1080i 96hz, and when I tried 1920 x 804 I realised that the scanlines were just as visible.

I have a bit of astigmatism and the lines at 1080i are very visible to me on an XG at 10' away. It's like looking through a bunch of black wires.

804i would be the same as it's the same number of scan lines in a given height.

You answered one part of my question - How can i get the 1080p or 720p picture to be bigger. The 1080i picture is substantially bigger. You answered that one. I like to make the tweaks you suggested, but I am not up for that. So I will live with it... for now.

My question now is how can i get 1080p to display with no folder over on the left and right sides. I just don't want to accept, buy a scaler. I want there to be another way - these things are sooo flexible. I just want to tweak.

-Greg

Try the position controls on the XG. When they are set too far one way the image will fold back on itself.

When will XG owners learn ;)

1080i@96, the only way to go. No overlaps, no scanning issues, no stutter & the best damn image you can imagine

Forget 1080p@60 from a standalone source as Mark said. You will need a processor or HTPC. If you do go the HTPC route, pick an ATI card and 96i You will not be disappointed. :)

I have a bit of astigmatism and the lines at 1080i are very visible to me on an XG at 10' away. It's like looking through a bunch of black wires.

804i would be the same as it's the same number of scan lines in a given height.


Sorry, I meant 1920 x 804 at 72hz progressive.


But there is something wrong with your setup. The field lines on my setup are only visible closeup to the screen.

You can sometimes see lines in white highlights in the image from the seats, but like I said, I tried 804p and they were the same.

You answered one part of my question - How can i get the 1080p or 720p picture to be bigger. The 1080i picture is substantially bigger. You answered that one. I like to make the tweaks you suggested, but I am not up for that. So I will live with it... for now.

My question now is how can i get 1080p to display with no folder over on the left and right sides. I just don't want to accept, buy a scaler. I want there to be another way - these things are sooo flexible. I just want to tweak.

-Greg


I frickin give up. 1080p standard timings will NOT WORK.


There's just no telling some people. :mad:

I frickin give up. 1080p standard timings will NOT WORK.


There's just no telling some people. :mad:

With out a Scaler/VP it cant be doen on your PJ like Mark says. I know on another site you asked what PJ can and it sounds like you are looking to got hat way but stick with what you have and get a VP, then you can do it. you need to adjust the timings , its not hard. and a used VP on videogon or here will do more your image than not having one at all. And you can tweek your little heart out with one.

Athanasios

sorry for asking... i did not mean to upset anyone. I'm done

Sorry, I meant 1920 x 804 at 72hz progressive.


But there is something wrong with your setup. The field lines on my setup are only visible closeup to the screen.

You can sometimes see lines in white highlights in the image from the seats, but like I said, I tried 804p and they were the same.

The only thing wrong is that my astig, optical and electrical focus are all good and the scan lines are too visible :p

If you think about it, the scan lines will only be about half as tall each as they are with 480i, like from an interlaced dvd player. We all know how obvious the scan lines are with that. 1080i isn't going to magically make them vanish.

I've never tried 1920x804p. There is too much 1.77/1.85 content out there to warrant it. Or else you have to crop it or shrink it to fit in the tiny 2.35 height.

The only thing wrong is that my astig, optical and electrical focus are all good and the scan lines are too visible :p

If you think about it, the scan lines will only be about half as tall each as they are with 480i, like from an interlaced dvd player. We all know how obvious the scan lines are with that. 1080i isn't going to magically make them vanish.

I've never tried 1920x804p. There is too much 1.77/1.85 content out there to warrant it. Or else you have to crop it or shrink it to fit in the tiny 2.35 height.



At 1080i the "scanlines" are 1mm tall on my screen.

If I do 1080i 50hz it's very noticable.

But at 1080i 96hz or 100hz they aren't. The faster speed hides them.


Yes, my XG will show 1:1 lines at 1920x1080.


To me it sounds like you are running a low refresh rate. What does your projector report?


Have you tried 1080p 48hz? Just untick the interlaced box.

It reports 96hz.

I'm trying 1080p 72hz now. Scan lines aren't visible but overlap isn't too bad.

One problem is that the left side has a vertical band, like when the position control is too far one way and the image is folding back. It's not folding back but there is some brightness variation. Hopefully I can get rid of it with some adjustment of porches or sync width.

Jesse,

I currently have 1080i at 72. I am not at my HTPC, but I'll post my settings when I get a chance. I have an 8500 nVidia with HDMI output. I do have visible scan lines. I cannot get 96 to work with this card and Powerstip does not seem to work well with this card.

-Greg

Why not give Gary Murrell a shout over at avsforums or curt palme's site? He's got an xg135lc dialled in to the max by all accounts. I'm sure he could give you plenty of tips. Knock him up.

Hi All,

I know I said I was "done". But I wanted to report that I got my DVD Player to work at 1080p. I randomly fiddled with the PSCAN and AR settings in the DVD player menu. And boom it work. My final settings are TV Aspect 16:9 and PSCAN 16:9 Squeeze... Small picture within the raster, but it works.

So don't shoot me for asking but... if i max out my screen size pots to fill the screen, will i run the risk of cracking the tubes, it i don't ever display any test patterns?

-Greg

I'm really liking 1080p on the XG. Even with 720p content it looks better than running at 1280x720p. With 1080p content, there is more depth and that solid, film-like image. The XG can't quite resolve 1080p as well as I've seen a G90 or Marquee 9500 Ultra do it, but it is doing a pretty good job still.

Now to figure out what is causing the small dark ripple on the left edge. Porch too small? More sync width?

Hi All,

I know I said I was "done". But I wanted to report that I got my DVD Player to work at 1080p. I randomly fiddled with the PSCAN and AR settings in the DVD player menu. And boom it work. My final settings are TV Aspect 16:9 and PSCAN 16:9 Squeeze... Small picture within the raster, but it works.

So don't shoot me for asking but... if i max out my screen size pots to fill the screen, will i run the risk of cracking the tubes, it i don't ever display any test patterns?

-Greg

Greg, What brand of Blu-ray player?

Mike

Marantz dv7001

http://us.marantz.com/Products/2109.asp

If it matters I also have the Marantz Pre/Pro

http://us.marantz.com/Products/2317.asp

Marantz dv7001

http://us.marantz.com/Products/2109.asp

If it matters I also have the Marantz Pre/Pro

http://us.marantz.com/Products/2317.asp

That’s some nice gear...I'm jealous :) For fun press “Info” on the XG remote and see what are the values of "fh" frequency and the "fv" frequency.

Mike

67.44, 59.94
HD + and VD +

BTW, this is a dvd player.

-Greg

It is 3:45am and I got it to work on my HTPC... mostly...

Here are my settings:

HORIZONTAL:
Front Porch 88
Back Porch 284
Active Horizontal Pixels 1920
Horizontal Total 2340
Sync width 48
Sync Polarity +

vERTICAL
Front Porch 4
Back Porch 36
Active Horizontal Pixels 1080
Horizontal Total 1125
Sync width 5
Sync Polarity +

Refresh Rate 60

XG Info Menu Reports:
fh 67.52
fv 60.00
sync polarity hd (+) vd (+)

I have a nVidia nx8500GT with HDMI out to Moome's card im my NEC ISS switcher..

The issue is text box fonts... they are not very clear. Web page text is fine for any size. screen graphics look great. Video is really great no scan lines.

-Greg

Why 60hz Greg?

For a start it should be 59.94hz, and secondly, with a PC, why not choose something that is a multiple of 23.976?

scan lines... with 1080i at 48, 72, and 96 I was getting scanlines. I wanted to see if 1080p would remove them. that was my number one question from people... "it looks good or even great, but... what's with the scanlines"?

The screen size was bigger at 60 over 59.94. I got it to 59.94, but i kept messing with the numbers (porches and sync) to see what had the biggest use of the raster.

In the end, i understand how you were right... it has everything to do with the source.

-Greg

Using the HDnet test pattern, I'm getting around 950 lines resolved of 1080.

Using the HDnet test pattern, I'm getting around 950 lines resolved of 1080.

Really? Only 950?

The 1080 lines are the easy bit. All of my NECs have easily done 1080 lines on a 16:9 screen. This is not a bandwidth function, simply dot size and scan stability.

I have solid 1:1 black/white lines for the 1080 (that would be horizontal lines).



The 1920 is the hard part. My Xtra had better 1:1 lines in the 1920 than my XG. They are there, but they aren't great. This is a bandwidth issue.


I have that test pattern I think, I'll have to dig it up.

Are you judging with alternating lines pattern or a res pattern? I dunno about "easy", most people don't even think the XG's can do 1080 at all.

1:1 black and white lines. That is the test.

It's the 1920 that is the hard bit. 1080 is a doddle.


Try this one.

AVS must have wrecked that one. Res is 1024x768

Yeah, AVS did. Try again: