Help with Video Pattern Tester

Shanerc1

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I have acquired a Wells Gardner Video Pattern Tester. It did not com with any cables so I made one from a db9 cable I had laying around. I used the pinout from the manual 1-ground, 2- NC, 3- Blue, 4- Green, 5- Red, 6- v Sync, 7- h Sync, 8- NC & 9- NC. on the monitor side molex kk connector I have 1- red, 2- green, 3- blue, 4- ground, 5- v sync & 6- h sync. I have double checked all my connections. I was told this uses positive sync. It works great on the svga side with a vga cable but on the cga setting I'm having sync issues. I am using it mainly for k4900, k7000 & g07 monitors. Do I need both positive sync wires hooked up? Should I combine them into one sync wire? if so which pin? Thanks in advance for any help on this.
 
Post a pic, of what the monitor image is doing, it may just be a slight adjustment on the monitor. H-Hold, H-Freq, ect.... I can't remember if these are positive sync, or negative sync. What happens if you connect them to negative sync?

I just looked at mine, I have the DB9 to Molex KK 2 and 4 position pins, nothing combined. It has been awhile since I used this, I received my CraftyMech TPG shortly after getting this, and kind of sidelined this unit. I remember I was able to get it to work with G07 and K7000's I had here.
 
Its definitely not a monitor adjustment because it works fine on my test rig. Can you post a picture of your cable?

That right there, could be it exactly. What are you using to produce a video signal from your test rig? Need more information of how you have yours setup, for what works, and for what hasn't worked so far for you. This is where pics help out, because people can only assume how you have this setup, and how you are feeding your signal. No different than swapping game PCBs, sometimes a monitor will need small adjustments, in order to properly display the signal difference between the two.

Verified my DB9 cable, I have it just like you stated in your first post: 1-ground, 2- NC, 3- Blue, 4- Green, 5- Red, 6- v Sync, 7- h Sync, 8- NC & 9- NC. My KK Molex 4 position is red/green/blue/ground and my 2 position is V-Sync/H-Sync separate.

Since I don't want to assume, looking at the male pin side of the DB connector, pins are numbered as this:

1 2 3 4 5 (row of 5)
6 7 8 9 (row of four)

Just to verify that your cable is set like mine. If so, then as long as your pattern generator is set to CGA, using the DB9 plug to the KK Molex, then it's not the generator.
 
I hope I don't sound like a jerk here but I know how to adjust a monitor. It's not a monitor adjustment, I promise I've tried and I'm perfectly aware that you have to make changes from game to game. The fact that you have a separate molex connector for sync tells me that the cga connection must be negative so I'll have to add one to my cable. Thanks for your help.
 
Didn't come off as a jerk, just needed more info on what you have/have not tried, to help isolate any issues. You know what you've tried, others do not, it just helps to paint a detailed picture for others :)

Newer member, low post count, could be someone with no experience, or someone with 20 years. Never know, until you paint that picture.

I repinned my connector to the 2 and 4 position, I do that for anything monitor related for ease of use. I believe my original connector did come pinned as positive sync, the more I think about it. Pretty sure it was a fully populated 6 position.
 
I'm still using the cables it came with. Didnt have to repin anything.
 
Yeah, I think it did come with a single molex. I cut the wires and moved the color wires to a 4 pin and the syncs to a 2 pin like you mentioned.
 
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