CurtPalme.com Home Theater Forum

[Ironman1965]

I've got a XG1350. Dialing in 720p is no problem and looks pretty good. I've tried dialing in 1080P a couple times, but what happens is the projected image is quite a bit smaller and there is "ringing?" on the side of the screen. Looks like the image scans to the end then back onto itself leaving if I recall correctly a warped edge and vertical line on the right side of the screen. I've read that people have dialed in 1080P. Am I missing something? Even if I were to blank out the stuff on the right of the screen I can't get anywhere near filling the raster. I've tried the PJ controls as well as the Catalyst software with no success. My input is a HTPC with a Radeon 4870 SVGA out to RGBHV. Is there something wrong with the PJ or is there something on the Video card that needs to be tweaked. I don't understand the whole custom video thing using Powerstrip. Is this what I need to use? If so are there any tutorials around for a beginner and this software and what all the functions are and how they interact? I have looked at it but in all honesty I was completely lost. Please don't tell me about front and back porches cause as far as I understand that is where you drink coolies on a hot day . Any feedback would be appreciated. Thanks. Sorry, wrong thread. Could a Mod please move to CRT thread. My appologies.

[ecrabb]

"Raster wrap", to which it's commonly referred, is typical in the XG's at 1080p. I think what you'll have to do is add some pixels (porch) to the signal to give the projector more time before it starts drawing the next scan line.

I'll move your thread to the CRT forum - Mark_A_W or somebody with an XG will probably be able to tell you exactly what you'll have to do with PowerStrip to get it working.

SC

[Mark_A_W]

Yes, you need to use Powerstrip. Yes you need to learn about porches, or at least learn to put numbers into a box labled "porch".

While you are at it you need to ditch 1080p and move to 1080i 96hz

[Ile]

1080p60 have stuttery pannings and 1080p72 is propably too much for XG1350.
So try 1080p48Hz (47.952 Hz) and if flicker bother you try 1080i96Hz. Both have same about 130 MHz pixel clock.

These timings should give you some ideas, even these are customed for BG808s with 1080i96Hz.

http://www.curtpalme.com/forum/viewtopic.php?p=229074#229074

[Jesse S]

I've tried setting up 1080p 72hz and it's always a mess. There is either raster wrap or bright/dark bands with streaking horizontally. Larger porches make no difference.

Perhaps someone has timings that work?

As to 1080i 96hz, sucks. We've visited this idea already

[CIR Engineering]

I just set up a Runco 991 Ultra (NEC XG110) three days ago, and I had success with a Radiacne XS processor running 1080p 60Hz and also 818x1920p at 72Hz. Both of these scan rates have raster wrap on an NEC when you try to use the default 2200 total horizontal pixels for 1080p. What you need to do is add more total pixels to the horizontal. I found that I could get by with as little as 2285 total horizontal pixels, but more like 2300 ~ 2350 would be better. With 2285 pixels ALL of the raster was used up. Just keep in mind that the more pixels you add, the more bandwidth that is required, and thus the softer the image will get.

I am not a HTPC guy so I don't know the ins and outs of Powerstrip. But what you will need to do is adjust your total horizontal pixel count to something around 2300. On a Radiacne processor that's all you need to do and then calculate the clock rate. On Powerstrip I think you will need to make other adjsutments.

Either way, you can make it work well on the NEC. The 110 I did the other day had really good resolution at 1080p 60Hz when looking at test patterns and looked very sharp on real world viewing. 818x1920 at 72Hz was even better and I was very pleased with the results and so was my client

craigr

[CIR Engineering]

[Mark_A_W]

Just remember, if you try an interlaced res with Powerstrip, you HAVE to put the card into "interlaced mode" first, using the ATi CCC or Windows Display settings.

If you don't you will only get the top half of the screen.


I really dunno what is wrong with your setup Jesse, 1080i 96hz is superb on an 8" LC projector. Detailed, no flicker, and smooth pans.


60hz is the work of the devil. There is no reason to run 60hz for movies - even my plasma and bluray run 24p.

[Ironman1965]

Thanks to all for the replies. Good information. I will try both your suggestions Mark and forgive me for asking, is it Craig or actually Craigr. Thanks again to all and once I get my PJ back up and running I'll give your suggestions a try.

Ray

[benny]

G'day Ray,

at the bottom you will see two alternate Powerstrip settings you can also try. The first one is for 47.952 Hz and the second for 59.94 Hz refresh. They are reasonably aggressive setting ( ie. have minimum front/back porches ) to allow maximum usage of raster on my XG-1350.

Pixel clock on the first is a tad over 126Mhz and the second is about 156Mhz.

I find the best method of creating non standard timing resolutions in Powerstrip is to first create a "base" resolution, using whatever parameters it suggests in the initial setup of that resolution. So in your case, go to the User Defined section within the Custom Resolutions area, and create a new 1920x1080 at hor refresh of 48 Hz. After the system has created/stored that base setting and can successfully switch to it without any abnormalities evident, you can then "copy" the 8 lines of code from the top one (below), and use the "paste timings from clipboard" icon which appears at the bottom right of the Advanced Timing Options section ( or custom resolutions ) within Powerstrip.

If you notice a little too much ringing on left side, you can fine tune using the "Position and size" controls to effect more front porches, but each time you do that, you may need to overtype the vertical refresh rate back to 47.952 ( or as close as you can get ).

Once you are happy with the 47.952 Hz setting, save the setting and CREATE A SHORTCUT ON THE DESKTOP during that process. This is accomplished by previously going into "Options/Preferences", and taking the tick off the "Disable shortcut creation prompts" option.

You can then quickly create another res setting by COPYING the icon from the first, and inserting the timing information in the "Target" field in the shortcut so it reads:

"C:\Program Files\PowerStrip\PStrip.exe" /T:1920,4,200,200,1080,10,4,26,156019,528

Using explicit timing strings, within a shortcut, allows multiple refresh rate and sizing controls for any given desktop resolution. If you rely on the list of profiles within the system tray icon, you will notice you can't store alternate refresh rates for a given res as they overwrite each other.

Using the above technique allows me to quickly jump between 48, 50 or 60 depending on the video I am watching, using a double click on a shortcut.

Powerstrip is a great tool but does take a little time to come to terms with.

Have fun tinkering,

Cheers,

Russ


========================================================================================================

PowerStrip timing parameters:
1920x1080=1920,16,200,216,1080,11,4,26,126435,528

Generic timing details for 1920x1080:
HFP=16 HSW=200 HBP=216 kHz=54 VFP=11 VSW=4 VBP=26 Hz=48

VESA detailed timing:
PClk=126.44 H.Active=1920 H.Blank=432 H.Offset=0 HSW=200 V.Active=1080 V.Blank=41 V.Offset=11 VSW=4

Linux modeline parameters:
"1920x1080" 126.435 1920 1936 2136 2352 1080 1091 1095 1121 +hsync +vsync

========================================================================================================

PowerStrip timing parameters:
1920x1080=1920,4,200,200,1080,10,4,26,156019,528

Generic timing details for 1920x1080:
HFP=4 HSW=200 HBP=200 kHz=67 VFP=10 VSW=4 VBP=26 Hz=60

VESA detailed timing:
PClk=156.02 H.Active=1920 H.Blank=404 H.Offset=-12 HSW=200 V.Active=1080 V.Blank=40 V.Offset=10 VSW=4

Linux modeline parameters:
"1920x1080" 156.019 1920 1924 2124 2324 1080 1090 1094 1120 +hsync +vsync

========================================================================================================

[Ironman1965]

Russ.

Thank you so very much! Can't wait to get the PJ back up and running so I can try this out. Spent the whole day today working on my fan mod and posting in my XG tube thread. Things are coming together slowly but surely. Thanks again and G'day to you too!

[Oliver Klohs]

[WanMan]

So, this can be accomplished via "HDP and HDQ scalers" for XG135x projectors?

[Oliver Klohs]

[CIR Engineering]

[WanMan]

I'm going to to think about this. If one can get a NIB/OB/used HDP/HDQ and get something close to 1080P out of my XG1351 then I'm still not having to spend $3K on a currently-new processor.

[Mark_A_W]

It would be total madness to spend $3k on a processor to "fix" an XG.


$3k will buy you a hell of a better projector.

[WanMan]

[Mark_A_W]

It it possible to get either a G90 or 909 for under $3k. $5k? Tell em they're dreaming.

You have been here long enough to know who to know, and you are on the correct continent, not the arse end of the world.

[CIR Engineering]

But the Radiance processor can be used to fix any projector so I think it's always a good idea.

You can use the Radiance for custom timings, gamma and greyscal manipulation, and very importantly color management. One can really dial in the primaries on a CRT with the CMS. This brings the image quality up to a new level that we have not seen on CRT before the Radiance.

...and then when you buy that G90 you can run the Radiance at 1080p 72Hz to boot and fix the red primary with the CMS, and improve the black point with the parametric gamma.

IMHO

craigr