Supergun question.

You know on candy cabs and probably just about every cabinet ever made, they all have vertical, horizontal and sync adjustments. You can stretch and shrink and do what you want, similar to a PC monitor. On my 2 cabinets, each game has to be setup individually, because some games are higher or lower usually. Its uncommon that I switch the game and its perfectly central with no black showing.

However, when you use a supergun, whats to stop the image going off the top or the right or the left or whatever? What element of the supergun centralizes the picture on the TV?

And is it possible to fit something inside a supergun that will adjust the picture in the aforementioned way?

I have a supergun coming to me soon and I was just wondering about this.


Thanks.

I guess it would be possible to add such controls to a supergun.
Another possibility (but I'm not sure about this) is that if you are using the NTSC output (through for example s-video) from a RGB->NTSC encoder inside a supergun, maybe this encoder already centers the screen? Take care that an arcade cab monitor is RGB and takes the pure RGB signal from the pcb, which is very different to what a supergun designed for a NTSC TV does. Take this theory with a grain of salt.
My TV supports direct RGB input and from my RGB-only superguns, I sometimes get a discentered screen with certain arcade boards.

Superguns have nothing to do with that: the adjustments need to be made on the TV just like the arcade monitor. You have to enter some hidden menu with several parameters including picture geometry, then you can adjust the picture size as you wish and in a much more precise and easier way than on arcade monitors: you don't have to turn analogic devices such as knobs in the back of the monitor, everything is done via remote and the values are saved onto eprom:

http://img.photobucket.com/albums/v65/nassivera/SONY08.jpg
http://img.photobucket.com/albums/v65/nassivera/SONY09.jpg
http://img.photobucket.com/albums/v65/nassivera/samsho1.jpg
http://img.photobucket.com/albums/v65/nassivera/samsho2.jpg
http://img.photobucket.com/albums/v65/nassivera/samsho3.jpg
http://img.photobucket.com/albums/v65/nassivera/blktiger2.jpg
http://img.photobucket.com/albums/v65/nassivera/blktiger3.jpg
http://img.photobucket.com/albums/v65/nassivera/blktiger5.jpg
http://img.photobucket.com/albums/v65/nassivera/blktiger6.jpg

You can mess up your TV pretty bad via the service menu if you don't know what you are doing though. Always write down the default settings before you mess with it. It isn't for engineers for nothing after all.

Setting up your TV to display correctly is a bitch. I spent hours and hours trying all those parameters out...

MKL said:

Superguns have nothing to do with that: the adjustments need to be made on the TV just like the arcade monitor. You have to enter some hidden menu with several parameters including picture geometry, then you can adjust the picture size as you wish and in a much more precise and easier way than on arcade monitors: you don't have to turn analogic devices such as knobs in the back of the monitor, everything is done via remote and the values are saved onto eprom:

Click to expand...

Yup, thats right but some games I cant get perfectly centered. For example with my Ketsui board no matter how much I play with the service menu I will always have about a 1/4 bar of black on the right side of the screen (which would technically be the bottom)

I instituted a Sync Splitter switch on a few guns.

Whenver the Splitter was activated, the image moved a few pixels to the right.....

Dreamer said:

Setting up your TV to display correctly is a bitch. I spent hours and hours trying all those parameters out...

Click to expand...

Well the first time you adjust the geometry of a given PCB you may well spend some time to find the correct values for it but once you know them it becomes a matter of seconds to set them again when you need to do so. Just write down the info...

Spike said:

some games I cant get perfectly centered. For example with my Ketsui board no matter how much I play with the service menu I will always have about a 1/4 bar of black on the right side of the screen (which would technically be the bottom)

Click to expand...

1/4 of the screen?!? That's a huge bar! Sounds really odd... I don't have that PCB but I tried dozens of PCBs from different manufacturers and got all of them to fit the screen perfectly. I guess it also depends on the TV. What brand is yours?

Am I to assume that in most cases the TV does a good job of centering the image then?


On my cabinets, the pot calipers to adjust these settings is under the control panel and takes about 5 seconds to set up. Its really user friendly and you don't have to know anything technical. You do not have to go behind the CRT to adjust these settings in other words.