Knoll Systems Hdp420 Projector User Manual

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Computer connections 
 
You can connect a computer’s VGA connector to the M1-DA/DVI input on the projector using an 
M1-A cable. 
 
RS-232 connections  
 
You can control the projector from an LCD control panel or computer by connecting an RS-232 
cable to the projector’s Serial control connector.  
 
Displaying an image  
Connect the power cord to the Power connector                plug in power cord 
on the back of the projector and to your electrical outlet. 
 
NOTE: Always use the power cord...

12 
        
Your projector has been factory optimized for   adjust Picture menu options 
excellent performance no matter what the source.        including Aspect Ratio    
However, if you wish to make further changes you  
can optimize the image using on screen menus.    
Adjust the Contrast, Brightness, Color, Tint, or Aspect Ratio 
in the Picture menu. See page17 for help with the menus and these 
adjustments. 
 
 
 
For Aspect Ratio, keep in mind that DVD players must be configured for 16:9 in order...

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The following tables show common problems. In some cases, more than one possible solution is provided. 
Try the solutions in the order they are presented. When the problem is solved, you can skip the additional 
solutions. 
 
  
 
  

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Still need assistance? 
If you need assistance, visit our website at www.knollsystems.com, or call us at 1 800 566 5579. 
during Pacific west coast time. This product is backed by a limited warranty. An extended 
warranty plan may be purchased from your retailer or dealer. 
 
When sending the projector in for repair, we recommend shipping the unit in its original packing 
material, or having a professional packaging company pack the unit. Please insure your shipment 
for its full value....

16 
Using the remote control 
The remote uses two provided AA batteries. They are easily installed by  
sliding the cover off the remote’s back, aligning the + and - ends of\
 the  
batteries, sliding them into place, and then replacing the cover.                                     
 
Navigation buttons 
   
To operate, point the remote at the projection screen or at the front of the  
projector (not at the video device or computer). The range of optimum  
operation is up to 30 feet (9.14m)....

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• Turn on Overscan to remove noise on the edges of the video image (\
page 19). 
• Change the Aspect ratio (page18). Aspect ratio is the ratio of the image width to image height. 
TV screens are usually 1.33:1, also known as 4:3. HDTV and most DVDs are 1.78:1, or 16:9 (the 
projector’s default). Choose the option that best fits your input source in the menus, or press the 
Resize button on the remote to cycle through the options. See page16. 
• Select a specific Color Space. See page 20. 
• Select...

18 
Menu options are grayed out only if the source is selected but no signal is present. For example, 
if the projector is set to a video source but the source, such as a DVD player, is turned off video 
menu options are grayed out. 
 
  
                                                                        \
                                                                                      
Picture Menu                                                                          \
        Increasing...

  19  
 
Gamma: Gamma tables contain preset intensity 
configurations optimized for the input source. 
You can select a gamma table that has been         Gamma 
specifically tuned for either film, CRT     
(Cathode Ray Tube), Video, PC, or Bright 
Room input. (Film input is material originally 
captured on a film camera, like a movie; video 
input is material originally captured on a video 
camera, like a TV show or sporting event.) 
 
White Peaking increases the brightness of whites that are near 100...

20 
Color Space: this option applies to computer and   Color space 
component video sources. It allows you to select a 
color space that has been specifically tuned for the 
input signal. When Auto is selected, the projector  
automatically determines the standard. To choose  
a different setting, turn off Auto, then choose RGB  
for computer sources, choose either REC709 or REC601 
for component video sources. 
         Color Temperature 
 
Color Temperature: changes the intensity of the colors....