Knoll Systems Hd272 Projector User Manual

							 
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Advanced settings 
 
TrueLife: This option refers to Faroudja’s 
TrueLife processing of the image. All standard 
definition interlaced video signals (composite, 
S-video and component) are routed through 
this processor.  Extended and High Definition 
progressive component sources are not 
routed though this processor by default.  You 
can turn TrueLife on to route these signals 
through the processor and then adjust the 
following 2 options: 
Chroma Detail: This adjusts the color 
sharpness. 
Luma Detail: This adjusts the sharpness.  
 
Noise Reduction: adjusts signal noise 
reduction. Choose Off to have no noise 
reduction, choose Auto to have the software 
determine the amount of noise reduction, or 
choose Manual and adjust the Level.  
 
Skintone Bypass prevents the noise reduction processing from being applied to skin tones. Images of 
people often look better with less processing. Available when Auto or Manual are selected. 
CCS: (Cross Color Suppression) processes the signal to remove any color information from the luma portion 
of the signal. It is On for all composite signals, Off for all component signals, and can be turned on or off for 
all  
S-video signals. 
NTSC 2:2 Pulldown: Turn this feature on to correctly display NTSC signals created from 30 frames/second 
source material (instead of the film standard 24 frames/ second).  
2:2/3:2 Off: Turn this feature on to turn off film mode detection. Some video material (especially film 
animation) is difficult to distinguish from film.  
Color Space: This option applies to computer and HDTV 
sources (it won’t appear in the menu for video sources). It 
allows you to select a color space that has been specifically 
tuned for the video input. 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 REC709 for component 1080i or 
720p sources, or choose REC601 for component 480p or 
576p sources. 
 
 
Color Temperature: changes the intensity of the colors. Select 
a listed value. 
 
 
  
						

							 
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Color Control: allows you to individually adjust the gain 
(relative warmth of the color) and the offset (the amount of black 
in the color) of the red, green, and blue colors.  
Gamma: Gamma tables contain preset intensity configurations 
optimized for the input source. You can select a gamma table 
that has been specifically tuned for either film, video, Bright 
Room, or PC 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.) 
 
 
 
 
NOTE: Your viewing preferences may vary. Cycle through 
the gamma options and pick the one you like the best. 
 
 
 
Video Standard: When it is set to Auto, the projector 
attempts to pick the video standard automatically based on 
the input signal it receives. (The video standard options may 
vary depending on your region of the world.) If the projector is 
unable to detect the correct standard, the colors may not look 
right or the image may appear “torn.” If this happens, 
manually select a video standard by selecting NTSC, PAL, or 
SECAM from the Video Standard menu. 
Overscan: (video sources only) removes noise around the video image. 
The following options are for computer or HDTV sources only.  
Phase: adjusts the phase of the video signal’s digital conversion. 
Tracking: adjusts the frequency of the video signal’s digital conversion.  
Horizontal/Vertical Position: adjusts the position of the source.
 
Settings menu 
Sources: allows you to assign a particular 
input to a specific source key on the remote 
and enables or disables Autosource. When 
Autosource is not checked, the projector 
defaults to the last-used source. If no source is 
found, a blank screen displays. When 
Autosource is checked, the projector checks  
 
the last-used source first at power up. If no signal is 
present, the projector checks the sources in order 
until a source is found or until power down.  
 
 
 
 
 
  
						

							 
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The Source Enable feature is used to eliminate 
certain sources from this search, which will speed the 
search. By default, the check boxes for all sources 
are checked. Uncheck a source’s box to eliminate it 
from the search. 
 
 
 
 
 
 
 
 
 
 
System 
All options in this menu toggle between on and off. 
Rear: reverses the image so you can project from 
behind a translucent screen. 
Ceiling: turns the image upside down for ceiling-
mounted projection. 
 
NOTE: It is recommended that all final image adjustments in Ceiling mode are made once the unit has fully 
warmed up (approximately 20 minutes). 
Auto Pow er: When Auto Power is checked, the projector automatically goes into the startup state after the 
projector receives power. This allows control of ceiling mounted projectors with a wall power switch. 
Display Messages: displays status messages (such as “Searching”) in the lower-left corner of the screen. 
High Power: Turn this on to increase the light output of the lamp. This also shortens lamp life and increases 
fan noise. 
Translucent OSD: makes the menus translucent. This prevents the image from being completely covered 
by the menus while you are making image adjustments. 
Chime: turn this on to hear a sound when the Power button is pressed. 
Power Save: when On, the lamp is automatically turned off after no signals are detected for 20 minutes. 
After 10 additional minutes with no signal, the projector powers down. If an active signal is received before 
the projector powers down, the image will be displayed.  
 
Startup Logo: allows you to display a blank Black, White, or Blue screen 
instead of the default screen at startup and when no source is detected.  
 
  
						

							 
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Blank Screen: determines what color displays when you press 
the Blank button on the remote or when no source is active. 
 
 
 
 
 
Language: allows you to select a language for the onscreen 
display of menus and messages. 
 
 
 
 
 
 
 
 
 
Service Menu
 
Use these features, highlight them and press Select. 
 
Factory Reset: restores all settings (except Lamp Hours, Ceiling, and Rear) to their default after displaying 
a confirmation dialog box. 
Test Pattern: displays a test pattern when the Blank button on the remote is pressed. To select the 
patterns, use the up/down arrows on the remote or keypad. 
Service Code: only used by authorized service personnel. 
 
Maintenance 
Cleaning the lens 
Apply a non-abrasive camera lens cleaner to a soft, dry cloth. 
Avoid using an excessive amount of cleaner, and 
don’t apply the cleaner directly to the lens. 
Abrasive cleaners, solvents or other harsh 
chemicals might scratch the lens. 
Lightly wipe the cleaning cloth over the lens in a 
circular motion. If you don’t intend to use the 
projector immediately, replace the lens cap. 
 
 
  
						

							 
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Replacing the projection lamp 
The lamp hour timer in the About menu counts the number of hours the lamp has been in use. After 1980 
hours, the message “Change lamp” briefly appears on the screen at each startup. To maintain optimal video 
performance, we recommend changing the lamp after 2000 hours, depending on usage. You can order new 
lamp modules from your dealer. 
. 
1. Turn off the projector and unplug the power cable.  
2. Wait 60 minutes to allow the projector to cool thoroughly. 
3. Turn the projector upside down and remove the lamp door by 
removing the two screws and sliding the lamp door tabs out of 
the three tab bays.  
 
CAUTION: Never operate the projector with the lamp door 
removed. This disrupts the air flow and causes the projector 
to overheat. 
 
4. Loosen the captive screw on the lamp module. 
 
 
WARNINGS:  
To avoid burns, allow the projector to cool for at least 60 minutes before you replace the lamp. 
Do not drop the lamp module. The glass may shatter and cause injury. 
Do not touch the glass lamp screen. Fingerprints can obscure projection sharpness. 
Be extremely careful when removing the lamp module. In the unlikely event that the lamp ruptures, small 
glass fragments may be generated. The lamp module is designed to contain most of these fragments, 
but use caution when removing it. 
 
5. Carefully remove the lamp module by grasping and lifting the metal bail wire. Dispose of the lamp in an 
environmentally proper manner.  
6. Install the new lamp module, making sure that it is properly seated.  
						

							 
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7. Tighten the single screw. 
8. Replace the lamp door by sliding the tabs into the tab bays and tightening the two screws. 
9. Plug in the power cable, then press the Power button to turn the projector back on. 
10. Reset the lamp hour timer. 
Resetting the lamp timer 
To reset the lamp age, simultaneously holding down the two Brightness buttons on the projector’s keypad 
for 10 seconds.  
Using the security lock 
The projector has a security lock for use with a PC Guardian Cable Lock System. This lock needs to be 
order from Knoll Systems. Refer to the information that comes with the lock for instructions on how to use it. 
 
 
 
 
Specifications 
 
Temperature Operating   50 to 95° F (10 to 35° C) at 0 - 10,000 feet 
Non-operating   -4 to 158° F (-20 to 70° C) at 0 -20,000 feet 
 
Altitude Operating    0 to 10,000 feet (3,048 meters) 
Non-operating      0 to 20,000 feet (6,096 meters) 
 
Humidity Operating    10% to 95% relative humidity, non-condensing 
Non-operating      10% to 95% relative humidity, non-condensing 
 
Dimensions   13.8 x 12.8 x 4.3” (351W x 325L x 110H mm) 
 
Weight        9.3 lbs. (4.24 kg) unpacked 
 
Optics Focus Range    5 - 32.8 feet (1.5 – 10 meters)   
 
Lamp Type      UHP lamp (dual watt: 200 and 250 watt) 
    Model SP-Lamp-006 
 
Input power requirements  100V-120V 4A 50/60 Hz 
    200V-240V 2A 50Hz 
 
 
 
  
						

							 
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Red LED behavior and projector errors 
If the projector is not functioning properly and the red LED is blinking, consult the table below to determine a 
possible cause. There are two second pauses between the blinking cycles.  
 
 
 
 
 
 
 
 
  
						

							 
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RS232 Terminal Specifications and Commands  
 
To control the projector from an LCD control panel, connect an RS-232 cable to the serial control 
connector on the projector and set your computer’s serial port settings to match this communication 
configuration: 
 
Command format 
All commands consist of 3 alpha characters followed by a request, all enclosed in parentheses. The request 
can be a read request (indicated by a “?”) or a write request (indicated by 1 to 4 ASCII digits). 
A read request format: (AAA?) where 
  (  starts the command 
  AAA  denotes the command 
  ?  denotes the read request 
  )  ends the command 
 
A read command returns 
the range and the current 
setting, for example: 
 
A write request example: (AAA####) where 
  (  starts the command 
  AAA  denotes the command 
  ####  denotes the value to be written 
    (leading zeros not necessary) 
  )  ends the command 
Some commands have ranges, while others are absolute. If a number greater than the maximum range is 
received, it is automatically set to the maximum number for that function. If a command is received that is 
not understood, a “?” is 
returned. With absolute 
settings, “0” is off, 1-9999 
is on.  
The one exception is the 
Power command, where 0 
is off and 1 is on.