CurtPalme.com Home Theater Forum

[perisoft]

My barco forces me to do astig by sticking my hands up there and running magnetics.

The G70 manual seems to suggest that there are full electronic astig adjustments, even for the center of the screen. Is this the case? Because if it is, damn, that's freakin' awesome!

[dvh99]

just look if there are flare rings on the tubes, i can not imagine them not being there.
btw gratuliere with the g70.

[perisoft]

[Nashou66]

The Barco doesn't have Zone Astig? Zone Focus? Etc?

Athanasios

[perisoft]

[ecrabb]

Between the astig and the scheimpflug, you'll love the G70, Perisoft... I love the electronic controls. I still have never mastered the astig, but it still looks awesome. My machine is damn near as sharp in the corners as it is in the center; that's not an exaggeration. I think you'll be impressed.

SC

[CIR Engineering]

The G70 does have ferrous flare magnets on the tube, but you probably don't need to bother with them as they are usually set up well enough from the factory. The G70 does have center astig and two-pole electronic adjustments to make up for any slight misalignment in the flare magnets.

If you find that you need a lot of electronic 2-pole or astig correction you should adjust the ferrous magnets on the tube necks. To do this, you center out all electronic 2-pole and astig correction and then adjust at ferrous magnets at the center as you would any other projector. Get them as good as you can and then touch up with the electronic adjustments in the service menu. But like I said, you really will probably not have to bother.

The G70 and G90 are supper sweet because you almost never have to even open the case on a G70 to do a calibration, and you never have to open the case on the G90 (unless you want to adjust DY coil pitch). Also the G70 and G90 have an electronic 2-pole adjustment for every scan rate so they can be optimized not just for one... likewise on the astig. For what it's worth, the G90 also has 6-pole electronic at the center and nine zones for true refinement

I brought this up in another thread, but on the G70 don't forget about the pincushion and keystone balance adjustments either. Many folks don't even realize they are there. So if you are adjusting keystone, press the keystone button a second time to get to keystone balance. Also for what it's worth the G90 doesn't have this balance because Sony took it to an even higher level with separate key and pin adjustments for all four sides on all three colors...

The D50, G70, and G90 are a dream to set up. Once you get the hang of it the adjustments go wicked fast and there is an adjustment for pretty much anything you could imagine. On the G70 and G90 you don't even have to get your hands dirty

craigr

[ecrabb]

Awesome info, Craig! Thank you, thank you, thank you! I'd like to highjack the thread and pick your brain for a second though if you don't mind... A couple of questions:

1) When you do a scratch setup on the G70 on a 16:9 screen, do you set up with the internal 31khz oscillator per the manual, then tweak from there? Or, do you use a different method (and no, I don't expect you to articulate your method - I'm just curious if do something different).

1a) If you do use the internal pattern, do you push the pattern out beyond the screen border? I had a lot of trouble with ringing and raster distortion (at 1080p) when I did my first couple of setups, and ended up doing a setup where the corners were well off the screen border. I assume it has to do with effectively making the raster larger in relation to the active area to give the beam more time to stabilize before it starts lighting up the raster on the left side.

2) Can you get the geometry perfect on a ~96" wide screen? I've always had a very subtle wave at the 1/4 and 3/4 screen width points that I've never been able to get rid of.

I know I can get this machine better... I got it so damn good the last time, I haven't messed with it in ages, but I know I can get it better. I think I'll do another setup once the weather gets crappy here. I've been close to hiring you a couple of times, but then I remember how I like to fiddle-dee-fart around with things and I realize that probably wouldn't be a wise investment.

Thanks!!!

SC

[perisoft]

[CIR Engineering]

[CIR Engineering]

[dvh99]

i managed to get my pj perfect on the screen but did so by cheating, using the convergence on green to get the faint waves out and getting the active picture perfect in the corners.
if the deflection coil isnt perfect on the neck you can have this minor problem or if the pj isnt physically set up right.
btw i used the porch setting too for fine tuning .

[CIR Engineering]

[ecrabb]

[ecrabb]

Holy crap... Thanks, Craig. Between that last post and a couple of the others you just made, you just eliminated most of the last 10% or so bit of uncertainty I had about setting up my machine. I'll be much more confident about going after it this time. Thank you so much.

[CIR Engineering]

[CIR Engineering]

[ecrabb]

[dvh99]

some games are scaled up to 1080p when you disable 720p in the menu.
uncharted and gta4 are certainly scaled up.

[dvh99]

[/quote]
I'm surprised you went through even once a year. NOBODY ever goes through here!

SC[/quote]

did they shoot twin peaks at that location??