| Author |
Message |
Marcel_D
Joined: 22 Sep 2007
Posts: 54
Location: Canada
|
| Posted: Sun Jun 05, 2011 4:19 am Post subject: NEC 9PG+ H-WIDTH Voltage |
|
|
Long story short, I reset the H-Width voltage back to the manual specified rating of 1.8V with a VIDEO (S-video) input and amplitude at 100%.
Now I decided to try out 1080i @72Hz and I noticed right when I switch to that resolution from 720p @ 72Hz, the fans speed up slightly. I read the voltage of the PA-2 pin and it was at about 7V with amplitude at 0. Is this high? Does anyone know the normal operating range of the H-Width circuitry? I plan on cranking the amplitude to 95% for a 16:9 setup. Just wanted to ask these questions first, thanks.
Also just a more general question; should I care about 1080i? Say most of my source material is 1080p Blu-Rays, will running 1080i be better than 720p?
One more thing, when setting PowerStrip for interlaced, does setting the vertical refresh rate to 72Hz imply 1080i/72 or do I need to set it to 144 to compensate for the interlaced frames?
|
|
| Back to top |
|
 |
gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
|
| Posted: Sun Jun 05, 2011 7:31 am Post subject: |
|
|
That voltage on PA pin2 looks normal at 1080 (because it depends on the scanning frequency) also you can check that when your H-width is at 100% your raster is not closer to the edge of the tube by 1,5cm at least, then you'll be fine. -but for this procedure you have to unmount your lenses.
1080i is better than 720p if you don't care about the scan lines.
In power strip, if you set 72Hz interlaced, your projector will show it as 144Hz, so you don't have to compensate
PS: 1080i@96Hz(48Hz) is the best (already flicker less) fullHD mode with a PG series pj
|
|
| Back to top |
|
|
Marcel_D
Joined: 22 Sep 2007
Posts: 54
Location: Canada
|
| Posted: Mon Jun 06, 2011 5:08 pm Post subject: |
|
|
|
Hey that's great. I actually tried 1080i/96Hz after you mentioned it. I couldn't see scanlines from where I was converging it so I figured it would work fine. The only problem I had was that I couldn't get the image to fill the raster like I did with 720p. After fiddling with the porch settings in PowerStrip it just wouldn't go as wide as I wanted. I think I'll just stick to 720 unless someone thinks its pretty impotant to go with 1080i. I've never converged it at that resolution so I don't actually know what I'm missing.
|
|
| Back to top |
|
|
gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
|
| Posted: Mon Jun 06, 2011 5:26 pm Post subject: |
|
|
hm.. it's interesting, 1080i should be as wide as 720p with the right porch settings. kschmit2 from the forum has the ultimate powerstrip timings for 1080i96Hz.
IMHO 1080p doesn't look much better than 720p unles you use reeeal big screen.
|
|
| Back to top |
|
|
CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
|
| Posted: Fri Jul 01, 2011 10:55 am Post subject: |
|
|
|
Funny you say that, in my experience, i couldnt get 720p to fill the screen sideways, yet 1080i goes right to the edges straight up, and i have to drop the amplitude into the minus.
|
|
| Back to top |
|
|
|
|
