WG19K4675 arc mon Q's

[rampy]

Hi all,

Now that the monitor in question has been procured, I of course have more questions.  But they aren't too bad, honest...

As noted in the subject it's a Wells-Gardner 19k4675 made in 1982.  I've downloaded the manual from mikes arcade shop.  I've succesfully made the ugliest VGA hack you've ever seen and did get some love on the screen from AdvMame and gridlee (i also accidently sent, i'm pretty sure 30khz to it without hearing anything or breaking anything yet)  And now onto the questions:

1. I noticed this monitor has separate horizontal and vertical sync, which kinda confused me briefly, as I expected composite sync.  I also noted it had both neg and pos iterations of H and V sync inputs.  

  1a. I'm currently using neg H,V sync - is that the "right' one?  
  1b. I thought I read PC vid cards output pos sync or do I have it
   backwards?

2. IIRC WG monitors are nice about taking from 1 volts  -  5 volts for RGB source (excuse my terminolgy abuse there), is this true for even old school 1982 WG monitors?

3.  Off hand is it possible or likely that this monitor *might* have some sort of sync protection to not accept input signals over 15khz? may just be wishful thinking on my part.

4.  *shrug* uh... anyone have the values/specs of this monitor for advv / advcfg /advmame ?

5.  Is it a beautiful day out where you are located?

Thanks!

Rampy

[rampy]

*bump* for the sake of bumping *shrug*

[Ken Layton]

Most commercial arcade video monitors can accept either positive or negative sync signals depending on which connector pins you use on the monitor. The vast majority of arcade game boards send out composite negative sync whereas computers usually send out positive sync.

[rampy]

Most commercial arcade video monitors can accept either positive or negative sync signals depending on which connector pins you use on the monitor. The vast majority of arcade game boards send out composite negative sync whereas computers usually send out positive sync.

Thanks,  I'm not so sure that the VGA cable outputs positive sync persay... but the WG in question had terminals for separate positive and negative H and V terminals.  IIRC i did the faux-composite sync to negative horiztonal sync terminal.

I ended up upgrading to use an ArcadeVGA card and video amp which worked better... but has it's own issues... (the old WG can't seem to lock on too wide a variety of resolutions without rolling/adjusting the VHOLD. *shrug* but that's in another thread)

Hmph.. I thought it varied a bit in arcade boards between composite, and separate sync and some monitors were pretty choosey as to how they were hooked up...  *shrug* but I bow to your experience as I'm a neophyte who'se spent too much time browsing RGVAC archives =)

I appreciate you taking the time to post though, ken...

Rampy