Dell Projector 4220/4320 User Manual

Specifications111
 NOTE: The lamp life rating for any projector is a measure of brightness 
degradation only, and is not a specification for the time it takes a lamp to fail 
and cease light output. Lamp life is defi ned as the time it takes for more than 
50 percent of a lamp sample population to have brightness decrease by 
approximately 50 percent of the rated lumens for the specified lamp. The lamp 
life rating is not guaranteed in any wa y. The actual operating life span of a 
projector lamp will...

112Specifications
RS232 Pin Assignment
RS232 Protocol 
• Communication Settings 
• Command types
To pop up the OSD menu  and adjust the settings.
• Control command Syntax (From PC to Projector)
[H][AC][SoP][CRC][ID][SoM][COMMAND] 
•Example : Power ON Command (Send low byte firstly)
--> 0xBE, 0xEF, 0x10, 0x05, 0x00, 0xC6, 0xFF, 0x11, 0x11, 0x01, 0x00, 0x01
•Control Commands List 
To view the latest RS232 code, go to the Dell Support site at: support.dell.com.
Connection settingsVa l u e
Baud Rate 19,200...

Specifications113
Compatibility Modes (Analog/Digital) 
ResolutionRefresh Rate (Hz) Hsync Frequency 
(KHz) Pixel Clock (MHz)
 640 x 350  70.08731.46925.175
 640 x 480  59.94031.46925.175
 640 x 480 p60 59.94031.469 25.175
 720 x 480 p60 59.94031.469 27.000
 720 x 576 p50 50.00031.250 27.000
 720 x 400  70.08731.46928.322
 640 x 480  75.00037.50031.500
 848 x 48060.00031.02033.750
 640 x 480  85.00843.26936.000
 800 x 600  60.31737.87940.000
 800 x 600  75.00046.87549.500
 800 x 600  85.06153.67456.250...

114Specifications
 800 x 600 119.97276.30273.250
 1024 x 768 119.98997.551115.500
 1280 x 720 120.000101.563146.250 

Contacting Dell115
Contacting Dell
For customers in the United States, call 800-WWW-DELL (800-999-
3355). 
 NOTE: If you do not have an active Inte rnet connection, you can find contact 
information on your purchase invoice, packi ng slip, bill, or Dell product catalog. 
Dell™ provides several online and telephone-based support and service 
options. Availability varies by country  and product, and some services may 
not be available in your area. To contact Dell for sales,  technical support, 
or...

116Glossary
Appendix: Glossary
ANSI LUMENS — A standard for measuring the brightness. It is calculated by 
dividing a square meter image into nine equal rectangles, measuring the lux (or 
brightness) reading at the center of ea ch rectangle, and averaging these nine 
points.
A
SPECT RATIO —  The most popular aspect ratio is 4:3 (4 by 3). Early television and 
computer video formats are in a 4:3 aspect ratio, which means that the width of 
the image is 4/3 times the height.
Brightness —  The amount of...

Glossary117
dB — decibel  — A unit used to express relative difference in power or intensity, 
usually between two acoustic or electric signals, equal to ten times the common 
logarithm of the ratio of the two levels. 
Diagonal Screen —  A method of measuring the size of a screen or a projected 
image. It measures from one corner to the opposite corner. A 9 ft high and 12 ft 
wide, screen has a diagonal of 15 ft. This document assumes that the diagonal 
dimensions are for the traditional 4:3 ratio of a...

118Glossary
Minimum Distance —  The closest position that a projector can focus an image 
onto a screen.
NTSC —  National Television Standards Committee. North American standard for 
video and broadcasting, with a video format of 525 lines at 30 frames per second.
PAL —  Phase Alternating Line. A European broadcast standard for video and 
broadcasting, with a video format of 625 lines at 25 frames per second.
Reverse Image —  Feature that allows you to flip the image horizontally. When 
used in a normal...

Index119
Index
A
Adjusting the Projected Image 25
Elevator button
 25
lower the projector Elevator foot
 25
Tilt adjustment wheel
 25
Lowering the Projector Height
 
25
Raising the Projector Height
 25
Adjusting the Projector Zoom and 
Focus
 26
Focus ring
 26
Zoom tab
 26
C
Changing the Lamp 106
Connecting the Projector 12 V DC Plug
 22
Composite Video cable
 18
Connecting a Computer with a  RS232 cable
 14, 15
Connecting with a Component  Cable
 19
Connecting with a Composite  Cable
 18
Connecting with...

120Index
Display 10
VGA-A input (D-sub) connector
 
10
VGA-A output (monitor  loop-through)
 10
VGA-B input (D-sub) connector
 
10
WiFi USB Type A connector
 10
Contact Dell
 7, 104, 106
Control Panel
 31
D
Dell contacting
 115
M
Main Unit 8
Control panel
 8
Elevator button for height  adjustments
 8
Focus tab
 8
IR receivers
 8
Lens
 8
Lens cap
 8
Zoom tab
 8
O
On-Screen Display 38
ADVANCED SETTINGS
 41
AUDIO INPUT
 41
AUTO ADJUST
 39
BRIGHTNESS/CONTRAST
 40
HELP
 56 INPUT SOURCE
 38
INPUT SOURCE...