Lumagen HDQ Aspect Ratio Problem

[Bryce Curdy]

I suspect I'll need to get my dealer out to adjust things, but grateful for any advice about the following problem.

The top and foot of the screen are often cut off. I'm very aware of this on Sky HD (BBC1 is a good example) but that is because on their news broadcasts they have fixed images (not sure what they are called - press red for interactive is an example - and they are truncated). The problem may apply to more channels/inputs but is less noticable for obvious reasons.

I've taken advice on here before and used BBC Parliament to recalibrate but I'm still not happy and to be honest the instruction manual is very unfriendly for the average user and I'm a little scared to play around. One thing I don't understand is why the fit is better (?perfect) with 1.85:1 No Zoom than 16:9. I would have expected the opposite. I don't remember having this problem before I added the HDQ - my TV (Pioneer 504) just did the job - and it's really starting to irritate me.

Thanks for any help.

[Gordon @ Convergent AV]

With the controls in the HDQ you should be able to minimise overscan of tv so it's less than it was with your old 504. This is purely a configuration issue.

Put up the Lumagens OVERSCAN pattern.

MENU>MISC>TPATS>PATS>OK then use the right cursor to go to the overscan pattern.

Now adjust the OUTPUT SIZE and POSITION So that you just loose the single outer rectangle on screen. You will have to keep jumping in andn out of the test pattern to do this. Once you've done it though you should just have about two pixels or so of overscan on panel.

If the panel loses the sync on the picture when you do this then try using the SHRINK command to achieve something similar.

Once youve got the pattern looking correct you should SAVE.

Now do the input sizing using something like BBC Parliament or NEWS24 or BBC1 that is full16:9.

Now save.

You should now have less overscan than you have had previously with or without the scaler. Be aware though that there now may be channels where you see noise or blank video around the active picture area.

Gordon

[Bryce Curdy]

Gordon - sorry, I'm getting nowhere.

When you talk about the overscan pattern I take it you mean the screen that says OVERSCAN and has a thin double border and a V without the apex in various alignments in the middle of each edge. Not sure what you mean by the single outer rectangle. Pressing the up and down arrows on this screen makes no difference to that screen in any case but does alter the previous CROSSHATCH pattern and adjusts the IRE (whatever that is) although mine is set at 100 and can go lower but not higher.

[Neil Davidson]

The OVERSCAN pattern Gordon mentioned is just that - a static test pattern that allows you to see how much of the picture is being shown on screen and how much is being chopped of (overscanned).

The pattern is just for information - you need to exit the pattern and go back in to the menu as described to actually make adjustments that affect this. Once you make an adjustment then go back to the pattern and check the result. It is an iterative process.

HTH

[Gordon @ Convergent AV]

OK. You use the OVERSCAN pattern to evaluate the size and position of the signal being displayed on your tv. You DO NOT USE up and down cursors for anything while this pattern is up. You just use the left and right cursors to navigate to it.

The OUTER RECTANGLE that you cannot see is at the tips of the V's you do see on each edge. If you come out of the test pattern and navigate to MENU>OUT> RES> SIZE and POS you can reduce the size and position of the displayed image on screen. Once you've done it a bit you go back to the OVERSCAN test pattern and see how your adjustments have changed things. Keep on iterating between these two parts of viewing test pattern and making adjustments until you see as much of the V's as possible but so as you don't see the "currently" invisible outer white rectangle.

Once you've done that MENU>SAVE>SAVE>SAVE....

Then do the input size thing.

Gordon

[Bryce Curdy]

Gordon - thanks, I think I've managed. I had worked out my initial mistake (not realsing I needed to goto MENU>OUT>RES>SIZE) and then I was trying to increase the size so that were two rectangles only! I misunderstood what you meant. Anyway, hopefully all sorted now. A couple of final questions:

When doing the input sizing, is it best to use the default (0,0) if no black bar shows, or are you best adjusting until a black bar appears and then 'reversing' until it just disappears and no more?

While messing around earlier I may have adjusted the IRE (set at 100). Could this cause me problems?

Thanks again.