Sony Pvm 20m2u

[rawbe]

Hello-

I purchased a sony pvm 20m2u to use with a mame project I started. After taking the case off and setting the monitor up in my Asteroids Cab I hooked the Monitor into my Windows XP via VGA to RGB. The monitor looks like I'm watching HBO without a subscription! It has a constant roll and the "left and right" are wacked out. Any suggests would be greatly appreciated.

Robbie

[rawbe]

I know this is such a NOOB question it isn't worth your time to reply but please spare a few minutes to help.

[rCadeGaming]

What kind of sync does the monitor require, separate or composite?  What is it getting?

What resolutions does the monitor work with, what is it getting?

[rawbe]

Just noticed 2 pins were bent in the adapter. I will have to order another one. To be continued.

[rCadeGaming]

On the VGA side of a VGA to BNC adapter?  Google the VGA pinout, find out what those pins are supposed to and that will tell you something.

[MonMotha]

FWIW, you did use some measure to get 480i/240p (15kHz timing) out of your PC, right?  It appears that this monitor won't support 31kHz progressive VGA or anything higher.

[rCadeGaming]

It appears that this monitor won't support 31kHz progressive VGA or anything higher.

Yeah, only 6 of the 15 pins on a VGA connector are critical.  It's easily possible that's the real issue, and the bent pins don't matter

[rawbe]

The broken pins are on the VGA. The lowest hertz my computer will Achieve is 60. I tried to install soft 15 but I do not have a Compatible video driver.

Should I look into buying a video card?

[rCadeGaming]

VGA connectors have 15 pins, only 6 are critical. Google "VGA pinout" and find out which pins you broke.

60Hz is the vertical scan rate (refresh rate), we're talking about the horizontal scan rate.  What MonMotha is saying is that your monitor only accepts resolutions with a horizontal scan rate of 15kHz (15,000Hz, k means 1,000), meaning 480i or ~240p.  If you haven't made any changes to the PC, it's putting out at least 31kHz.

If you want to get this monitor working with a PC, yes you'll probably need a Soft15kHz compatible card.

You'll need do some learning to be able to set this stuff up though.

Take a look at the second link in my signature, and start reading there.  It's all about outputting the resolutions you need from a PC and setting up MAME for all this.  It talks about using a 15kHz TV, but it will all apply exactly the same to a 15kHz monitor like yours.  Just ignore the part about a VGA/RGB to component transcoder.  You don't need that, as your monitor will accept VGA from the computer directly.

[rawbe]

I will look on eBay/Craigslist 
for available video cards tomorrow.

Thank you for your replies. I will start my research. I can see i'm out of my element with this monitor. i was hoping it would be easier.

I will stay in touch.

[rCadeGaming]

Have you looked at the list of Soft15kHz compatible cards?  You need to something off of that list.

[rawbe]

Will do. Thanks!

[Jack Burton]

So you decased a pro monitor and mounted it before you got a viewable picture on it?  You are a braver man than I. 

[rawbe]

Ok, I ordered and installed a ATI Radeon 9600 (Catalysist 6.1), hooked up new VGA to BNC cord, downloaded and installed soft15khz. When I start up the Windows XP 32bit computer that is set to lowest color and bit rate. The best picture I have achieved on the SonyPVM has reddish color and the screen will fade to black. I can hit the input button and it will display again but will again fade to black.

[rawbe]

Has anyone seen a monitor receive signal, the signal look excellent, then the screen slowing fade to black?

The monitor is in good working order.

[rCadeGaming]

Did you clear up your cable issues?  Also, the color bit-rate shouldn't matter, what matters is what resolution you're outputting.  Try 640x480 interlaced or 320x240 progressive.  640x480 progressive won't work.

Not sure about the fading though.  If the above is corrected, and the picture is working correctly for a few seconds, the issue could be just with the monitor itself.  You'll have to find someone familiar with those.

[Gray_Area]

Ahem. It requires a 15khz signal. Your cable must be properly wired.

[rawbe]

G.A.-
You are/were right! I have since done much research and finally have my setup past the monitor questions

[rawbe]

Plus a quick solution to combining BNC signals buy a BNC Y connector. Much easier than making a custom cable.