2011 Mitsubishi 3D DLP Owners Thread (740/840 series) - Page 9

Originally Posted by Darin

Actually, they are still square shaped, but they are rotated 90°. Some people call a square rotated 90° a diamond, to me a diamond suggests a shape that is taller than it is wide (or vice versa), but for this purpose we'll just consider it semantics.

Originally Posted by micah67

Forgive me for jumping in, here, but I think you mean 45°, no? Otherwise, you'd be back at a square.

Originally Posted by Hipnotiq

interesting, but what information do you have that shows the mirrors are not square shaped?

Originally Posted by Darin

Understood. There is no "conventional" way to describe it. We call it 960x1080 to put it inter terms that we can understand relative to the more typical orthogonal arrangement. It could just as easily be called 1920x540. It just depends on whether you to count by shifting every other column, or every other row.

The "row pairs" and "column pairs" that TI likes to describe them as are misleading. That results in counting pixels twice... ...Yes, and if you take a pen and "check off" each pixel as you count it, you will see that you would be attempting to count some pixels "twice" if you count them that way.

Yes, but only after two sub-frames are projected. In 3D mode, each eye only sees every other sub-frame. Each sub-frame only contains 1,036,800 pixels.... you can call that frame 960x1080, or 1920x540, or however you want to define it dimensionally.

But the end result is it's only about 1MP.

Or... the short answer is: I can see it. The loss in resolution is very apparent if you sit close enough. Put up an image with very fine detail. If you have an HTPC, any windows screen is a good source, since much of the text is only 1 pixel wide. Put it in 3D mode, and put on the glasses. All the missing pixels become immediately apparent. Through more typical video content, it's not normally noticeable unless you sit very close. But it's clearly there.

...You will then understand why it's difficult to classify the resolution in a standard "X" by "Y" dimension...

Originally Posted by Hipnotiq

the bad news is that mitsubishi changed their emitter code from previous years to a new code this year. that means that glasses that worked on last years TVs will not work on this years TVs without using a seperate IR emitter.

I think you can buy those used on ebay. it should be cheap. just make sure to disable the internal emitter if you use the external one.

Originally Posted by SquirrelyBama

Oh no........
Will XpanD X102 DLP Link 3D glasses we just got for our 73740 not work with the new internal emitter?

I'm new to all this 3D stuff so I went with the 3D glasses(safe route) they always showed with the Mitsubishi's on the Shopping Networks. Guess we might have to get an external emitter to read these XpanD X102’s since they changed the code on the new sets.

Originally Posted by Augerhandle

You are fine. DLP-Link is different from IR and has not changed.

Originally Posted by Hipnotiq

the bad news is that mitsubishi changed their emitter code from previous years to a new code this year. that means that glasses that worked on last years TVs will not work on this years TVs without using a seperate IR emitter...

Originally Posted by curtishd

What is on top of the tv? Is it the ir 3D emitter or what?

Originally Posted by Augerhandle

So as not to derail this thread, more discussion can be found here.
http://www.avsforum.com/avs-vb/showt...9#post20625259

Originally Posted by Darin


Done.

Originally Posted by trapperjohnMD

mitsubishi changed the IR spec from samsung to panasonic for the 2011 product. its common knowledge.

Originally Posted by scoombs

From an email sent by Xpand Tech Support regarding the X103 Universals...

"With new Mitsubishi TVs (2011 sets) you should be using setting #4 for Universal Glasses (same as Panasonic, Toshiba, Sharp).

With old Mitsubishi TVs (2010 or earlier) you should be using setting #1 (same as Samsung)."

Originally Posted by Freestyle 10461

would anyone know if the Samsung SSG-2100AB 3D Glasses work with the 73840 with internal Emitter

Originally Posted by bslep

This is from the 2009 Mits owners thread - note the disclaimer "Enter the Service Menu at your own risk." I corrected the geometry best I could on my 82837.


Mits Geometry Correction Instructions
Enter the Service Menu at your own risk.


- Press "menu"
- While on the menu screen press 2 4 5 7 wait 2 seconds then press 0
- You'll see 5 menu selections at the top of the screen
- Arrow down to "MANUAL KEYSTONE GEOMETRY ALIGNMENT" and press the "enter" button
- You will come to a black screen with overscan lines around the perimeter and two vertical lines at the 4:3 bar location
- Seeing this screen, you'll probably want to adjust the perimeter also which is the first part of these instructions. If not, read on through to the end which will get you to the 4:3 bar adjustment.
- There are adjustment points along the perimeter ("+" marks)
- The first point you're at when you arrive to the screen is the upper left corner
- Adjust that point (if needed) by pressing the up/down/left/right arrow keys in the direction you need that point to move to straighten any irregularities there. You won't see any of the lines move at this point, just the "+" pointer.
- You access the "+" points in a clockwise direction from the starting point by pressing "fast forward" (to the right of "play") on the remote to move to the next adjustment point. Adjust the pointer at the next point if needed in the same manner (up,down,left right) then on to the next point.
- "Fast Rewind" will move you backwards, point to point, headed back to the starting point.
- Since you don't see the results of your adjustments onscreen, you'll have to press "enter" which will return you to the Geometry menu screen, then "enter" again to get you back to the adjustment screen. Then you'll see the results. You'll be going back and forth like this quite a few times. NOTE: If you make an adjustment on a point and press "enter", that adjustment won't take. Make sure before you "enter" out to the menu, that you fast forward or rewind to the next point first.

- To adjust the two 4:3 vertical bars, "fast forward" all the way around to the starting point. Once there, you'll be in the 4:3 bar adjustment mode. The next "fast forward" press will make both 4:3 lines move. Just keep pressing "fast forward / rewind" until you get the bars straight as possible. Press "enter" to get back to the menu screen. If you are finished, press "exit".

Originally Posted by Cleveland Plasma

I am surprised about that, as most Mitsubishi dealers are having no issues with inventory on any model.

Originally Posted by tuxster

So, even though I've read through this thread, I continue to be confused about 3D glasses for the 740/840 series.

I know X103's are the recommended glasses, but they are $70+ each, and they don't have any kids sizes.

So, would other IR glasses work? What is it that we need to look for, that they support Panasonic?

For example, NXG Tech NX-3DGR says "For Samsung and Mitsubishi". Should I understand that to mean "pre-2011 Mitsubishi" instead? And as such, these glasses would not work with 740/840? What about Dimensional Optics?

Or, I guess another way to ask this question is: Does anyone know of any 3d glasses that come in sizes for both kids and adults and works with the 740/840?

Originally Posted by scoombs

FYI, the X103 Universals come with three different sized nose-bridge inserts to help with various face sizes. My kids are older, so not sure how it would work for smaller kids.

Originally Posted by scoombs

I followed these instructions for geometry correction with my 92840, as well as those in the service manual for the 833 series. The 16-point adjustment for the edge geometry works as advertised, but the last part where its says that after adjusting all points and pressing fast forward again, it will take you to the 4:3 mode does not seem to be working. When I go to through all 16 points and press fast forward, it just cycles through all 16 points again.

Here is the exact wording from the 833 Service manual:
"5. After all 16 points are aligned properly, pressing the FASTFORWARD button again automatically activates the 4:3 mode (there is no change in the display). There are 11 patterns, each with a small variation of distortion in the 4:3 mode vertical lines. Continue pressing FASTFORWARD to cycle through the 11 patterns until you find the straightest 4:3 lines, then go to step 6.
6. Press the ENTER button to save the adjustment and EXIT to leave the Adjustment Mode.."

Anyone had luck with current model, and can tell me what I am doing wrong?