128
Glossary
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, 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 computer image as per the example
above.
DHCP —
Dynamic Host Configuration Protocol
—
A network protocol that
enables a server to automatically assign a TCP/IP address to a device.
DLP
®
—
Digital Light Processing™
—
Reflective display technology developed by
Texas Instruments, using small manipulated mirrors. Light passing through a color
filter is sent to the DLP mirrors which arrange the RGB colors into a picture
projected onto screen, also known as DMD.
DMD —
Digital Micro-Mirror Device
—
Each DMD consists of thousands of
tilting, microscopic aluminum alloy mirrors mounted on a hidden yoke.
DNS —
Domain Name System
—
An Internet service that translates domain
names into IP addresses.
Focal Length —
The distance from the surface of a lens to its focal point.
Frequency —
It is the rate of repetition in cycles per seconds of electrical signals.
Measured in Hz (Hertz).
HDCP —
High-Bandwidth Digital-Content Protection
—
A specification
developed by Intel™ Corporation to protect digital entertainment across digital
interface, such as DVI, HDMI.
HDMI —
High-Definition Multimedia Interface
—
HDMI carries both
uncompressed high definition video along with digital audio and device control
data in a single connector.
Hz (Hertz) —
Unit of frequency.
IEEE802.11 —
A set of standards for wireless local are network (WLAN)
communication. 802.11b/g uses the 2.4 GHz band.
Keystone Correction —
Device that will correct an image of the distortion
(usually a wide-top narrow-bottom effect) of a projected image caused by
improper projector to screen angle.
Maximum Distance —
The distance from a screen the projector can be to cast an
image that is usable (bright enough) in a fully darkened room.
Maximum Image Size —
The largest image a projector can throw in a darkened
room. This is usually limited by focal range of the optics.
Содержание S500
Страница 1: ...Dell S500 S500wi Projector User s Guide ...
Страница 32: ...32 Using Your Projector Adjusting Projection Image Size S500 S500wi Projector to screen distance ...
Страница 83: ...Using Your Projector 83 PtG Viewer System will stay in this page when ready Photo Viewer ...
Страница 102: ...102 Using Your Projector Reboot System Click Reboot to reboot the system Crestron For Crestron function ...
Страница 124: ...124 Specifications 800 x 600 119 972 76 302 73 250 1024 x 768 119 989 97 551 115 500 1280 x 720 120 000 101 563 146 250 ...