Christie Dlv1920 Dx User Manual

							Section 3: Operation  
3-62 020-100001-01 Rev. 01 (04/07) 

						

							 Section 3: Operation 
020-100001-01 Rev. 01 (04/07)  3-63. 
1d) In either Color Adjustments menu, select a “User” color. Then: 
• If you have created a “User 1” color gamut (recommended) for a well-
matched wall, continue to Step 1e. 
• If you prefer maximum brightness rather than a particular color 
temperature, select “Max Drives”.
 
IMPORTANT: Do not change User 1 Color Adjustment in color-matched 
applications! 
 
1e) In the White Uniformity 
menu, set the “Overall” 
output level to 50.0 and all 
remaining slide bars to 0.0. 
This decreases the light 
output 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 Eight 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 eight target zones (four 
edges and four 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), and then 
adjust its corners. See Figure 3.16. 
 
  
						

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Figure 3.16. 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 Eight 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 3.17). 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 3.17. Match Zones to Center Light Output 
Step 4: Readjust Color Temperature (level of red/green/blue) in Eight 
Zones 
4a) Return to Steps 2a & 2b and, if necessary, fine-tune the zones so that they all 
still exhibit a single color temperature.  
						

							 Section 3: Operation 
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Cancelling 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 3.18. 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 two-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.   Ed
ge Blending f  
						

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• Blend Width determines how much area is used for blending along an overlapping 
edge. Slide bar values represent the number of eight-pixel steps used for the 
blend. For example, a setting of “eight” creates a blended edge 24 pixels wide. A 
setting of “0” signifies no blending. For best results in most applications, use a 
blend width of 16-48 steps (128-384 pixels). 
Ranges: 0-80 horizontal, 0-60 vertical. 
• 
Blend Shape determines the rate of 
roll-off across the blend width, i.e. 
how quickly the white levels across 
the blend change from light and dark. 
Increasing the Blend Shape setting 
accelerates the rate of change at both 
extremes so that less of the region 
appears mid-gray (see Figure 3.19). 
Decreasing the Blend Shape setting 
slows the rate of change so that more 
of the region appears mid-gray. For 
most applications, this subtle control is 
best left close to 50.  
• 
Blend Midpoint determines the white 
level at the blend midpoint (the point 
equidistant between the beginning and 
end of the blend). Increasing the Blend 
Midpoint setting creates a blend that 
appears brighter than the rest of the 
image. Decreasing the Blend Midpoint 
setting creates a blend that is darker than 
the rest of the image. A setting of 50 
means the midpoint is approximately 
50% black—for best results in most 
applications, keep fairly close to this 
default.  
 
Figure 3.19. “Shape” Examples 
 
Figure 3.20. “Midpoint” Examples  
						

							 Section 3: Operation 
020-100001-01 Rev. 01 (04/07)  3-67. 
• Show Blending Overlap turns your 
defined blend width area to solid gray so 
that, if needed, simply overlapping the 
gray bars can seamlessly align two 
adjacent images. Toggle the Show 
Blending Overlap off to reactivate the 
blend effect.  
NOTE: Blending Overlap appears as 
Reserved when ChristieTWIST is 
installed. 
Other Functions  
For convenience, the Edge Blending 
submenu also includes related options for 
enabling a specific color and/or test pattern, 
or for working with colors or the lamp. Such 
functions duplicate those provided elsewhere 
in the menu system. 
 
Edge Blending Procedure 
NOTE: Before attempting to work with edge blending software functions, you must 1) 
physically align the projectors/images by correctly overlapping the displays from your 
intended external source, and 2) Match colors and Brightness Uniformity. 
IMPORTANT: For a shared edge, all Blend procedures and settings should be 
identical on BOTH projectors. 
 
1. Start with two projectors. Display full white field test pattern from both. 
2. In the Edge Blending submenu, enable Edge Blending by entering a checkmark in 
the top checkbox. 
3. 
SET STARTING POINTS FOR ADJUSTMENT: 
• Set all blend widths to 0. 
• Go to “More” and set everything in the Edge Blending (2) menu to 50. 
 
Figure 3.21. Set Starting Points for Each Projector 
 
  
						

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4. SET BLEND WIDTH: On one projector, increase the Blend Width for an overlapping 
edge (for example, if the projector’s image is on 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: 
• Increase Blend Midpoint in both projectors to “lighten” the overall blend, 
decrease to “darken” the overall blend. 
• Adjust Blend Shape in both projectors to fine-tune change the amount of mid-
gray intensity (as opposed to black/white) in the blend. 
7. Repeat with remaining projectors / overlaps. 
8. Check completed display wall with the desired external signal. 
9. Adjust mechanical alignment if necessary to maintain perfect pixel-on-pixel 
alignment over time. 
In applications where you are projecting only white or light images, the Blend Width 
may be slightly higher—set according to how much overlap you have between 
images. Use the following as a guide (examples show overlapping width only—values 
for overlapping height will differ): 
• Recommended overlap is 12.5% - 25% 
 
Similar to Edge Blending, Black Level Blending allows you to adjust the black level 
hues of multiple adjacent projected images to create one large seamless display. Edge 
blending must be enabled in order to use the Black Level Blending features. 
Black Level Blending Procedure 
NOTES: 1) Adjust white levels before adjusting black levels. 2) The zones in BLB 
menu correspond to the Edge Blend zones. If a given Edge Blend zone width is set to 0 
(i.e. no blend on that side) then the corresponding BLB zone is disabled. It only 
becomes accessible when that Edge Blend zone is active. 
1.   Start with two projectors. Select the black test pattern for both projectors from the 
Geometry and Color submenu. 
2.   In the Black Level Blending submenu, enable black blending by putting a 
checkmark in the checkbox for each projector. 
 
         Black Level Blendin
g   f   
						

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3.   Working with one projector at a time, use the center brightness slide bar to adjust 
the center brightness (brightness of the non-blended region) so that the center 
intensity matches that of the brightest blended region (the center of all images 
when blending a 2 x 2 display is the target area). 
4.   Use the following three color slide bars, Black Red Level, Black Green Level and 
Black Blue Level, so the black hue of each projector matches. 
5.   You can choose which of the next four options, Top, Bottom, Left, Right, to use 
depending on which edge of the projector you are working with has been edge 
blended. The blend width can be adjusted to line up properly but by default it 
corresponds to the edge blending setting determined for that edge.  
 
 
 
6.   The brightness and black hues of the blended region can be adjusted in more 
detail in case fine-tuning is needed (may be only necessary for blending a 2 x 2 
projector display because of blending differs for the sides and center). 
NOTES: 1) The menu options vary depending on the Edge Blending parameters. 
2) You may need to re-adjust the black level hues following the overlap 
adjustments on each blended edge. 3) When adjusting six or more projectors, you 
need to ensure that the hue and brightness of each target area is matched at 
closely as possible. 
 
As an alternative to using a keypad, most projector functions can be controlled 
remotely, typically at a controller such as a PC, via 1) simple bi-directional ASCII 
messaging on an Ethernet or serial communication link or 2) a web interface or 
“ChristieNET” on an Ethernet network.  Using a PC interface can also prove to be 
useful in instances where extreme warping is applied and the menu items become 
illegible and hard to navigate. 
VIA ASCII MESSAGING — Connect a serial link between your controller and the RS232 
or RS422 port (recommended), or open an Ethernet socket (i.e., Telnet) between your 
controller and the valid projector address. Valid ASCII codes and messages are 
documented in the Christie Serial Communications document available at the Christie 
website. 
VIA WEB INTERFACE — Connect your PC to the projector’s Ethernet port. In your web 
browser (Internet Explorer, for example), enter the IP address of the projector you 
wish to control. This will start a password-protected ChristieNET application—enter 
the factory default “
ccm7” login and password to open the program. If the projector is 
powered up, you can access assorted menu options and slide bars. 
3.11 Remote Control 
of the Projector  
						

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Repeat for remaining networked projectors as desired. Keep in mind that multiple 
units can be controlled from one PC, but each unit will be in its own ChristieNET 
interface (web browser) at the PC. Likewise, you can make up to five separate web 
locations to a single projector. 
The default login provides access to security settings, where you can define other 
users with the same or fewer rights. Use “unlimited” rights for most applications. For 
all logins, the Service menu is still protected with its own password. 
NOTES: 1) Any proxy server settings that interfere with this type of link should be 
disabled for using ChristieNET. Disable through Internet Explorer’s < Tools> 
  . 2) Your PC must be Java-
enabled to v1.4.2 or higher to run ChristieNET. 3) Depending on your projector 
model, certain controls provided through ChristieNET are non-functional. 
 
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 Exit 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. 
3.12 Error 
Conditions 
 User Errors f 
 In
put Signal Errors f  
						

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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 is 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 
slow. When such a message appears, check the frequencies shown in the Status menu. 
If they are correct, the projector does not recognize the signal. 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 
Exit Exit 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 
Exit Exit 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.   S
ystem Warnings / Errors f