Christie Digital Systems Ds+4k, 8k, Dlv1400-dx, Mirage S+2k, 4k, 8k Users Manual

							Section 3: Operation 
 
  
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Figure 3.32. Copy X/Y Values into All Projectors 
6.  In each projector, judge by eye and adjust x/y coordinates slightly in the following 
manner: 

						

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Using the Color Saturation Menu for Color Matching 
You may prefer to use the 
Color Saturation menu to 
match colors across 
multiple screens. In the 
three Color Adjustment 
submenus (Red, Green, 
Blue—see right), set all 
main values to 100 and 
the secondary values to 0. 
Then judge by eye and 
adjust the slidebars as 
needed. Note that 
adjustments here define 
new x/y coordinates in the 
Color Adjustments by X,Y 
menu. 
 
 
 
 
WHAT IS BRIGHTNESS UNIFORMITY? When used to refine screens already matched for 
their primary colors (see Matching Colors in Multiple Screens, above) and overall 
light output, proper adjustment of Brightness Uniformity can create an exceptionally 
smooth screen in which: 
• no area of the screen appears more red, green or blue than another  
• no area of the screen appears brighter than another 
• color and light output from one screen closely matches adjacent screens 
Although the Brightness Uniformity control can be used for a stand-alone projector, it 
is particularly useful for setting up and maintaining tiled images that form a cohesive 
display wall in which the color “cast” and light output appear uniform throughout 
each image as well as throughout the entire wall. The procedure provided here 
assumes a multiple-screen application. 
 
 Before You Begin 
Read through the entire procedure before attempting to adjust Brightness Uniformity 
controls, and keep in mind the following checklist of prerequisites and guidelines:  

						

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1d) In either Color Adjustments menu, select a “User” color. Then: 
• If you have adjusted “User 1” Color Adjustment to create a well-matched 
wall (recommended), select “User 1” and then choose a color. Continue 
with Step 
1e. 
• If you prefer maximum brightness rather than a particular color 
temperature, select “Max Drives”.  
 IMPORTANT 
Do not change User 1 Color Adjustments 
in color-matched applications! 
1e) In the White Uniformity menu, set “Overall” to 50.0 and set all others to 0. This 
decreases the light output from each color just enough throughout the screen so 
that any color level can then 
be increased later as 
necessary for matching light 
output from zone-to-zone. 
Do not exceed 50.0 for 
“Overall”—a higher level 
will likely interfere with 
achieving brightness 
uniformity and is not 
recommended. 
Ensure that overall light output remains well-matched from one screen center 
to the next. Where necessary, increase or decrease Lamp Power slightly to 
recover center matches. 
Step 2: Adjust Color (level of red/green/blue) in 8 Zones 
NOTES: 1) At this point, ignore the brightness of individual zones. 2) Always ignore 
menu colors. 
2a) On each screen, compare the color temperatures in the 8 target zones (4 edges 
and 4 corners) to that of the color temperature of the center. Compare using a 
white field only, and take note of any areas that do not match the center. Also 
decide if any screen exhibits a more obvious color shift than other screens—
begin with this screen in Step 
2b.  
2b) Return to the Brightness Uniformity menu. Beginning with the screen that exhibits 
the most obvious color shift(s), for each edge that exhibits a noticeably different 
color temperature from the center, select the corresponding Uniformity adjustment 
menu—Left, Right, Top or Bottom. For example, if any part of the left side is too 
blue, too red or too green, go to the Left Uniformity menu and adjust the colors 
(i.e., change their light output) until all portions of the left side closely match the 
center color temperature. Adjust an edge first (focusing on its center), then adjust 
its corners. See Figure 3.34. 
   
						

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Figure 3.34. Match Zones to Center Color Temperature 
Repeat the color adjustment of sides and corners for each edge of the screen that does 
not yet match the center (note that each corner is adjustable in either of its two 
adjacent “side” menus). When done, all areas of a given screen should match. Repeat 
Steps 
2a & 2b for all remaining screens. 
Step 3: Adjust Light Output in 8 Zones 
3a) For each screen, compare the light output of each edge and corner to that of the 
center. If any of the areas differ, use the White Uniformity menu to match edges 
and corners to the center as described below (see Figure 3.35). Begin with the 
screen exhibiting the most obvious variations in light output. 
•  Adjust edge White Uniformity first—note that each edge adjustment also 
affects the rest of the screen slightly. Keep all edges just slightly lower than 
the center light output rather than matching light output precisely. 
Otherwise, it may not be possible to brighten the corners (typically the 
dimmest areas of the screen) enough. I.e., the best uniformity is a 
compromise between the brightest and darkest areas of the screen.
 
• 
 Adjust corner White Uniformity last—each corner adjustment affects only 
this quadrant.
  
• 
  Repeat for each screen.  
 
Figure 3.35. Match Zones to Center Light Output 
Step 4: Readjust Color Temperature (level of red/green/blue) in 8 Zones 
4a) Return to Steps 2a & 2b and, if necessary, fine-tune the zones so that they all 
still exhibit a single color temperature.  
						

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Canceling Brightness Uniformity 
If you do not want to use or apply Brightness Uniformity settings, delete the 
checkmark from the “Uniformity Enable” checkbox at the top of the Brightness 
Uniformity menu. 
Christie Edge Blending is an innovative set of software functions that can quickly and 
easily blend white levels along the edges of multiple adjacent projected images to 
create a single seamless larger image. 
What is a Blend? 
In simple terms, a blend appears as a gradient strip along 
an edge of a projected image. It is darkest along the 
extreme edge of the image, and lightens nearer to the 
rest of the image (see right). 
How Are Blends Used? 
In multiple-projector walls, complementary blends 
between neighboring images can compensate for the 
extra “brightness” or intensity where these edges overlap. By controlling blend width 
and other properties, you can achieve uniformity across the group of images. Visible 
overlaps will disappear: 
 
Figure 3. 36. Edge Blending Concept 
For best results, use the same projector model and type throughout your display wall. 
In addition, avoid high-gain screens whenever possible—the optical performance of 
such screens demands minimal image offset, thus projectors must be located very 
close to one another. 
Edge blending software controls are located in the 2-page Edge Blending submenu—
access via Configuration menu, then go to the Geometry and Color menu and select 
Edge Blending. The More option opens the second page of the Edge Blending 
submenu. 
Main Functions 
Use Edge Blending controls to set the precise width, shape and midpoint you need to 
blend overlapping edges together smoothly. 

						

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Figure 3.39. Set Starting Points for Each Projector 
4. SET BLEND WIDTH: On one projector, increase the Blend Width for an overlapping 
edge (for example, if the projector’s image is on the left, its right edge overlaps the 
adjacent image—adjust Right Blend Width). Use the same setting on the second 
projector for this shared edge. 
5.  Re-adjust width (both projectors) until the overly bright band at the midpoint of the 
overlapping blends disappears or just changes to very light gray. For the shared 
edge, use the same Blend Width setting on each projector. If the “best blend” 
appears to be between two settings, choose the wider setting for both projectors. 
6. 
CHECK BLEND: If the blended region appears too dark or light in relation to the rest 
of the image: 

						

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Occasionally the projector will encounter an error condition that can interrupt normal 
operation. Such a condition can be caused by a simple invalid keypad entry, an input 
signal error (most common) or a system error. The manner in which users are to be 
notified of error conditions is set in the Menu Preferences menu: 
• To see error messages displayed on-screen, select the “
Screen” or “All” option. 
• To be notified via a serial communication only, select the “
RS232” option. 
•  To receive both types of notifications, select “
All”.  
• To disable error messages (except for “invalid user key entry”, which can’t be 
hidden), select “
Off”. 
Note that a two-digit error code appears in the status LED display window located 
beside the built-in keypad at the rear of the projector. Normal operation is indicated by 
the “0n”status code. 
 
 
Invalid User Entry 
A keypad entry not recognized by the projector triggers a short on-screen error 
message identifying the problem. For example, if you specify a channel number that is 
not available, the message “Invalid Channel will appear. Or if you try to enter the 
wrong password, you’ll see “Invalid Password”. Press 
 or Ex i t to clear the 
message and try again. 
NOTE: On-screen display of “Invalid User Entry” messages cannot be disabled, even 
if Display Error Messages has been set to “Off”. 
An input signal error message occurs if you are in presentation level (i.e., there are no 
menus present) and have selected an input on which the projector detects a problem. 
While menus remain operational and any key press will temporarily remove any 
displayed error message, you must resolve the signal problem in order to permanently 
eliminate the message. 
No Signal 
The message No signal occurs when there is no source signal detected at the 
selected input—both HSYNC and VSYNC are inactive and the screen background is 
black. Connect or correct the signal, or try another input. 
Bad Sync 
The message Bad Sync occurs when HSYNC or VSYNC are active but the signal 
cannot be displayed. Such a condition occurs when only one of the two sync signals is 
present or when either sync signal is unstable or of the wrong frequency. Correct the 
signal or select another input. 
Other Signal Error Messages 
In addition to the common Bad Sync and “No Signal” errors, you may encounter a 
signal error message indicating that HSYNC and/or VSYNC are either too fast or too 
3.12 Error Conditions 
 User Errors 
 Input Signal Errors  
						

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slow. When such a message appears, check the frequencies shown in the Status menu. 
If they are correct, then the signal is not recognized by the projector. On some PCs 
you may be able to change the settings to generate a compatible signal. If the 
frequencies shown in the Status menu are incorrect, check the cabling to see where the 
problem might originate. 
When the projector encounters a system malfunction, either a System Warning 
message or a System Error message may appear. Both types of messages are 
accompanied by a numerical error code on the status LED display. A system 
malfunction can be cleared with 
Ex i t Ex i t  from presentation level, but may indicate 
the need for service by a qualified service technician. 
NOTE: System messages appear on-screen only if Display Error Messages has been 
set to “Screen” or “All”. 
System Warnings 
A system warning indicates that a system malfunction has been detected (see Status 
LED Codes, below). A system warning message replaces any input signal message 
and disappears when the input signal status changes. While the projector will remain 
operational, the message indicates the presence of a potentially serious problem that 
should be investigated. You can press 
Ex i t Ex i t to remove the message, but for best 
results you should reset the projector—power the projector down and up again with 
the 
 (power) key. 
System Errors 
A system error message indicates that a serious malfunction has been detected and 
must be investigated as soon as possible (see Status LED Codes, below). The projector 
will no longer operate and must be reset—power the projector down and up again 
with the 
 (power) key. 
The Status LED Codes 
If the status code display on the back of the projector shows one of the following 
values, you have encountered a likely system error requiring the attention of a 
qualified service technician (see System Warnings and System Errors, above). 
Acknowledge and clear the error with 
Ex i t Ex i t from presentation level, or try 
resetting the projector by powering it off and on again, cooling when necessary. 
Consult Table 3.5 and contact your dealer if the problem persists. 
The specific code number identifies the source of the error detected, and is 
particularly useful in cases where the projector is far away. For example, the code 
“27” means the lamp could not be turned on. Error codes for this projector are listed in 
Table 3.5 below.   S
ystem Warnings / Errors