PS2/Extron RGB unstable image

[Finger]

Hello,

I'm posting here as I can't solve this issue and somebody may have encountered the same problem.

Here is my setup :

NTSC PS2 (set to RGB) -> Scart wired for composite as sync (did the test with Lumia too) -> scart to vga cable (with sync stripper) -> Extron 203rxi, RGBs output -> Extron MVX 44 -> BVM 20G1E

I'm trying to get my PS2 "dowscaled" to 240 thanks to the Extron RGB "trick". All 203's switches are set to off. That means the DDSP switch is set to off, enabling access to centering knobs and signal dowscaled to 240p, as I do have scanlines. Unfortunately, the top of the image is "chopped" :



When DDSP switch is set to ON, I do have a nice 480i picture without any issue, but that's not what I want.

I have tried pretty much everything :

* Serration pulse switch
* YUV output from PS2 through the RGB cable and YUV cable
* PS2 scart cable with sync on Lumia or composite as sync
* Swapping Extron's internal jumper (J6,J7,J20)
* Don't have on the BVM-20G1E the AFC/VCR parameter that usually solves this kind of issues

As I'm running out of idea, some help would be more than welcome. As anybody encountered this issue with this setup and overcome it ?

Cheers

[Finger]

Tried with another Extron interface (580xi) and this time no distorsion on the top but some blue/magenta blurry horizontal lines accross the image.
Any idea would be more than welcome

[FinalBaton]

I have the 580xi.

I have all the switches in the down position, except the "DDSP" and "Comp Sync" ones in the up position.
Everything looks great that way.

[Finger]

Thanks.
Your PS2 set to RGB or YUV ?
On what monitor it's hooked up ?

[Fudoh]

got your PM, but let's discuss it here.

setting the level and peaking controls too high can have nasty results. You shouldn't get any artefacts though unless you exceed the original video input level. In other words: settings the controls to about 1/3 should be safe.

As before: do you get the same results when using component from the PS2 ? Eventually it doesn't matter - it's just easier to test since you eliminate other sources of possible problems.

[FinalBaton]

Thanks.
Your PS2 set to RGB or YUV ?
On what monitor it's hooked up ?

PS2 is set to RGB.

It's hooked up to my NEC XM37 Plus

The "level control" pot is set at 10 o'clock, so slightly lower than unity gain (wich is 12 o'clock on this pot).

The "peaking control" pot is set completely counter-clockwise (this is unity gain on this pot).

[Finger]

got your PM, but let's discuss it here.

setting the level and peaking controls too high can have nasty results. You shouldn't get any artefacts though unless you exceed the original video input level. In other words: settings the controls to about 1/3 should be safe.

As before: do you get the same results when using component from the PS2 ? Eventually it doesn't matter - it's just easier to test since you eliminate other sources of possible problems.

Yeah more or less same result in YUV, that's insane. Symptoms are not identical from a 203rxi to a 580xi. Are the processors different or firmware not identical between Extron RGB Interfaces ? Are they supposed to not work the same way ?


@FinalBaton : Thanks for tips. I heard the NEC sync pretty much everything

[FinalBaton]

No problem Finger ^_^
make sure to try adjusting the pots like I suggested. This might solve your issue

[Finger]

Pots are set to 1/3 of their max course. Unfortuntaly I can't get a perfect image.

The thing being weired, I get different behaviours for a particular configuration with 2 different Extron interfaces :

With the 203rxi :
RGB : distortion/bended of the picture on 2 cms at the top
YUV : distortion/bended of the picture on 2 cms at the top

With the 580xi :

RGB : when video level control set to 1/3 or less, image is good but with lack of brightness. If I increase the brightness on my monitor the horizontal blurry appears.
YUV : 1/3 of the image at the top is slighlty brighter than the other. i.e. looks grey whereas the rest is black.

looks like, this guy had this kind of issues : http://shmups.system11.org/viewtopic.php?f=6&t=53367
but never solved them

[FinalBaton]

And you also tried it with the "Peaking" pot set at minimum on the 580xi?

Hmmm... I don't know what the problem can be then

[FinalBaton]

@FinalBaton : Thanks for tips. I heard the NEC sync pretty much everything

Yes! they sync to a wide variety of PC resolutions in RGB, from 15kHz up to 1280 x 1024 at a solid 60Hz without problems.
My model even syncs 1920 x 1080 at 60Hz when I don't use a transcoder (so direct from an XRGB or a PC, i.e.).
The XP37 Plus and XP29 Plus sync to even higher levels (1600 x 1200 @60Hz for sure according to the manual, and it's probably capable of reaching up even a bit more)