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Discussion Starter · #1 ·
I just took my NEC XG1352LC out of carton,which I bought in more than one year ago then the pj sit rest in the carton till last week when I hooked up everything.Barco 801s,Barco 1200,1209 & Sony G70 were once my pj so to display signals from standard DVD,cable TV and Satellite HDTV is not difficult for me.I use Faroudja NRS 1280 x 720 as scaler and it does component to RGBHV conversion also.

Above is my background.Now I take interest in up-converting DVD player outputing 1080p( mostly from HDMI?) and Blue-ray DVD ( output 720p from HDMI?).HOW CAN I DISPLAY THESE FROM CRT PROJECTOR NEC XG1352LC?


Thank you in advance for you kind help !
 

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You do a very nice 1920 X 800p ( the 2.35:1 part of 1920 X1080p) with thios projector. Gary M does it and swears it the ISH!
 

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You need a scaler like the vp50 or Lumagen or other nice unit and set its output to 1920 by 800 and use a 2.35:1 screen. The Nec will allow you to squeeze the raster enough to do it.
 

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Quote:
Originally Posted by jeffwp /forum/post/0


i thought 1920p took it out of its bandwidth?


how do you get the hd unit to output 800x1920p?


Backwards again Jeff.......



It will 1080p at 60hz.



Rick


If you have a scaler I would use 1080i 96hz (lower bandwidth, no 3:2 judder, no flicker) or 1920x800p at 72hz (or 60 if you don't see 3:2 judder).


Or you can just plug the component outputs from the player straight in the XG 1351 at 1080i and go (Jeff is right).



Mark
 

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Mark_A_W said:
Backwards again Jeff.......



It will 1080p at 60hz.



Rick


If you have a scaler I would use 1080i 96hz (lower bandwidth, no 3:2 judder, no flicker) or 1920x800p at 72hz (or 60 if you don't see 3:2 judder).


Or you can just plug the component outputs from the player straight in the XG 1351 at 1080i and go (Jeff is right).



Mark....i mentioned 1920 because for a progressive signal 1440 seems to be an xg,s hor limit while it can handle a vert 1080 or 1152 signal ok .


ps i,m going for a 1080x1280px47.95 ivtc signal via a lumagen for hd-dvd
 

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Jeff, an XG will do 1920 just fine. 1:1 lines are fairly easily resolved, depending on the "rest" of the resolution. The spot size is small enough - so is an Xtra's BTW. G90 does it much better, but the 8" NECs do it ok.


From what Russ told me, I think the problem you guys have with 1152p is you run out of retrace (and bandwidth..), and you can't get the width at 1920x1152p at 50hz..


So yes it will do a 1920x1080p signal at up to 60hz, but better at 48 or 50hz...if you can stand the flicker.


For me 1280 x 1152p at 50hz (or 1440x1152p at 50hz) is not a clean multiple of anything I watch these days, and I'm sensitive to flicker..


I currently run 1920x1080i at 72/75hz but there are occasional field lines visible. 96hz basically fixes that, but it is a touch softer as it's higher bandwidth - same as 1080p 48hz.


And umm...ah...backwards again...it's not 1080x1280p at 48hz....it's 1280x1080p at 48 hz....you'll get everyone confused.


Anyway, I wouldn't use 1280. Go all the way to 1920 x 1080p at 48hz, but give 1920x1080i at 96hz a go while you're at it - you might like it
 

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He says 1352 not 1351.

1352 is a 150 MHz machine.

The CRT size is the limitation here compared to a 9" but it sure has the electroics to support 1080p. For a while I ran my XG 1352 out of PC with [email protected] with good result. But 1080i looks sharper.
 

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Quote:
Originally Posted by CaspianM /forum/post/0


He says 1352 not 1351.

1352 is a 150 MHz machine.

The CRT size is the limitation here compared to a 9" but it sure has the electroics to support 1080p. For a while I ran my XG 1352 out of PC with [email protected] with good result. But 1080i looks sharper.


What video amps does the 1352 use? What's the part number on the neckboards?


I guess you've heard my opinion on NEC bandwidth specs by now (probably 5 times), but the 1352 is one I haven't had my hands on to check in person.
 

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Quote:
Originally Posted by Mark_A_W /forum/post/0



I guess you've heard my opinion on NEC bandwidth specs by now (probably 5 times), but the 1352 is one I haven't had my hands on to check in person.

5 times? Guess again!


Quote:
Originally Posted by Mark_A_W /forum/post/0


What video amps does the 1352 use? What's the part number on the neckboards?

I will look into it. Also Doug said that there are some other varieties to it too which I can't recall.
 

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Ok, it goes a little like this...


PG6200, PG9200, identical boards despite varying bandwidth specs.


XG-751, 1101, 1351, identical boards despite varying bandwidth specs.


And I'm told Plus's and XG xxx0's are identical too (and the service manuals list no different relevant boards/parts).


So I'm a little skeptical about the NEC spec'd differences in bandwidth. I'm 95% certain all models in a generation have identical bandwidth despite specifications. All the relevant boards in the video path, in all the NEC models I've looked at, are identical.


It does depend on many things in the video path, but for what it's worth, all NECs from the Xtra onwards have 130mhz amps. Not sure whether they "peak" them for more bandwidth or not.
 

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Discussion Starter · #16 ·
Thank you all for all you opinions of value.


I checked online manuals of those hiend scalers knowing that if it takes digital in with HDCP,digital out is a must.Most upscale DVD players and BR ,HD DVD players output their upscaled and HD signals from HDMI with HDCP,don't they?So how NEC XG1352LC can get RGBHV from those scalers? ( beside by use of HDMI to RGBHV board from Moome)


Another question,what about the original resolution of BR and HD DVD software,720p,1080i or 1080p? Do BR and HD DVD players output these signals only in digital form from digital(HDMI) connector?


Probably very basic questions for you,but at present very helpful and of keypoint for me.Thank you for you help!
 

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You either go


Component->Scaler>RGBHV->Projector


or


HDMI->Scaler->HDMI/DVI->HDCP compliant input card installed in projector



The original resolution is 1920x1080. Interlaced or progressive is more complicated, but effectively the resolution of the source, if processed correctly, is 1920x1080 at 24fps.
 

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Discussion Starter · #19 ·

Quote:
Originally Posted by jeffwp /forum/post/0


or component out of blu-ray or hd-dvd player [at 1080i or 720p] straight in to xg1352.

Though some input connectors are marked Y,Cr,Cb,it seems my XG1352 doesn't take high-resolurion component signals such as 720p,1080i which I had tried to fed to my XG1352 only with all-green image displayed.


Do I lack anything in the path? How can I have component out of Blu-ray or Hd-dvd player [at 1080i or 720p] "straight" into xg1352 as Jeff said?


Thanks! Getting more and more help and concepts!
 

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Quote:
Originally Posted by rickrick36 /forum/post/0


Though some input connectors are marked Y,Cr,Cb,it seems my XG1352 doesn't take high-resolurion component signals such as 720p,1080i which I had tried to fed to my XG1352 only with all-green image displayed.

If all green is displayed, your PJ thinks the signal is RGBHV, not component. I don't know the NECs and if the transcoder inside is HD capable but I think it is. I don't know how they select that input, but you could check the manuals:
http://www.curtpalme.com/NECXG_Downloads.shtm

Quote:
Originally Posted by rickrick36 /forum/post/0


Do I lack anything in the path? How can I have component out of Blu-ray or Hd-dvd player [at 1080i or 720p] "straight" into xg1352 as Jeff said?

As an FYI, it won't send SD DVDs at any res higher than 480p over component.


Dave
 
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