[dubmaster]

Following the recent thread concerning video noise during pans on LT150, i tried another time scan rates higher than 60 Hz. The picture suffers from tearing very badly (screen gets horizontally divided in the middle on fast pans).


I would really like to go at 75 Hz on video pal material.


is Someone else using the DX3 higher than 60 Hz ?



bye



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dubmaster

 

[dubmaster]

Bump.....


I hate it but with so many LT150 posts it probably went unseen, i tried to link this post with LT150, just in case...


bye



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dubmaster

 

[schmidtdarren]

dub,


I recently aquired a DX3 from another AVS'er. I'm just in the process of testing it and seeing what it can do compared to by Viewsonic 830 (Davis DL450 clone).


I'm pretty sure I have the refresh rate set at 72hz. I'm not seeing anything out of the ordinary. I'm using a Geforce2MX based HTPC.


BTW, what monitor setting are you using for the DX3? Sometimes, these things make a difference.


Darren A. Schmidt

 

[dubmaster]

The tearing happens on both htpcs, the main one is connected with DVI at 60 Hz and i need to use powerstrip to change refresh rates, the other htpc uses VGA.

Both videocards are matrox G400, one has DVI module added.


Could you please check your refresh rate, maybe with an analog monitor if the drivers do not provide refresh information.


Maybe the problem is matrox-dependent, in this case a new radeon VE would come handy to test.


bye


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dubmaster

 

[schmidtdarren]

At this point, I'm just using an analog cable. And a cheap one at that. My main projector cable is ceiling mounted, I'm just placing the DX3 on an end table for now.


I know I had Gladiator running last night at 72hz. I didn't see tearing from what I know. I'll check again when I have time. DScaler also looks good at this rate.


I have a DVI equipped Radeon kicking around (an AIW), but do not have a DVI cable. One did not come with my projector, so I guess I'll have to track one down.


Using powerstrip, can you change the Sync from pos to neg, and other parameters? This might help. I don't think that DVI uses this though.


Darren A. Schmidt

 

[Frode]

To check for tearing use the test provided in Videomark 2000 ( www.madonion.com ).


It's possible that the projector doesn't use any other rate internally than 60Hz btw. The LT150 appears to do this for instance. If you really want to make sure it's the projector and not the video card run the tearing test on a regular monitor. Tearing on DVD material doesn't have to be as pronounced as the above tearing test however as anamorphic material suffers less from it. The test is just an indication of whether your display or your card has this problem at all - not how severe it may be.


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/frode