Dell M409WX Projector Users Guide

Glossary41
Appendix: Glossary
ANSI Lumens —A standard for measuring light output, used for comparing 
projectors. 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 each rectangle, and averaging these nine points.
Aspect 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...

42Glossary
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 9FT high, 12FT 
wide, screen has a diagonal of 15FT. This document assumes that the diagonal 
dimensions are for the traditional 4:3 ratio of a computer image...

Glossary43
Reverse Image— Feature that allows you to flip the image horizontally. When 
used in a normal forward projection environment text, graphics, etc, are 
backwards. Reverse image is used for rear projection.
RGB— Red, Green, Blue— typically used to describe a monitor that requires 
separate signals for each of the three colors.
S-Video—A video transmission standard that uses a 4-pin mini-DIN connector to 
send video information on two signal wires called luminance (brightness, Y) and 
chrominance...

44Index
Index
A
Adjusting Projection Image Size 16
Adjusting the Projected Image
 14
Adjusting the Projector Height
 
14
Elevator button
 14
Elevator foot
 14
Tilt adjustment wheel
 14
Adjusting the Projector Zoom and 
Focus
 15
Focus ring
 15
Zoom tab
 15
C
Changing the Lamp 35
Connecting a Computer
Power cable
 8
USB to USB cable
 8
VGA to VGA cable
 8
Connecting a DVD Player
Using a Component Cable
 11
D-sub to YPbPr cable
 11
Power cable
 11
Using a Composite Cable
 10
Composite video cable
 10
Power...

Index45
Control panel 6
Elevator button
 6
Focus ring
 6
IR receiver
 6
Lens
 6
Zoom tab
 6
O
On-Screen Display 21
Auto-Adjust
 22
DISPLAY (in PC Mode)
 24
DISPLAY (in Video Mode)
 25
Input Select
 21
LAMP
 26
LANGUAGE
 27
Main Menu
 21
Other
 27
PICTURE (in PC Mode)
 23
PICTURE (in Video Mode)
 23
Set Up
 22
P
Phone numbers 40
Powering On/Off the Projector
Turning Your Projector Off
 13
Turning Your Projector On
 13
R
Remote Control 19
S
SpecificationsAudio
 38
Brightness
 37
Color Wheel Speed
 37...