Epson Powerlite 7500c Multimedia Projector Users Guide

129
Mechanical
Height 3.6 inches (93 mm)
Width 9.3 inches (236.2 mm)
Depth 13.6 inches (345.4 mm)
Weight 9.4 lb (4.2 kg)
Electrical
Rated frequency 50/60 Hz
Power supply 100 to 120 VAC, 2.2 A, 50/60 Hz
200 to 240 VAC, 1.0 A, 50/60 Hz
Power consumption Operating: 220 W
Standby: 30 W
Environmental
Temperature Operating: 41 to 95 °F (5 to 35 °C),
non-condensing
Storage: 14 to 140 °F (–10 to 60 °C),
non-condensing
Humidity Operating: 20 to 80% RH, 
non-condensing
Storage: 10 to 90% RH, 
non-condensing...

7    Technical Specifications             130
Supported Computers and Monitor Displays
The following table lists the display formats supported by the 
projector.
Note: The frequencies of some computers may not allow the image 
to be displayed correctly.
 
Computer type Formats Resolutions
IBM PC and 
IBM PC compatibleEGA, VGAEGA
VGACGA
VGA60, VESA
VGA Text
VGA Text
VESA72/75/85
SVGA 56/60/72/75/85
XGA 43i60/70/75/85
SXGA 70/75
SXGA (7500C Only)
SXGA (7500C Only)640 ×
 350
640 ×
 400
640 ×
 480
720 ×...

131
Computer In and Computer Out connector pin assignments
The Computer In and Computer Out connectors are female video 
RGB, 15-pin micro-D-style connectors. The pin assignments are:
PinComputer Out
connector signalsComputer In
connector signals
1 Red analog input Red video
2 Green analog input Green video
3 Blue analog input Blue video
4 Reserved Monitor (ID bit 2)
5 GND GND
6 Red GND Red video GND
7 Green GND Green video GND
8 Blue GND Blue video GND
9 Reserved +5 V
10 Sync GND Synchronous GND
11...

7    Technical Specifications             132
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133
Glossary
Brightness
The balance of light and dark shades in an 
image.
Composite video
A type of video signal that encodes picture, 
luminance, and synchronization information so 
it can be carried in one signal.
Contrast
A measure of the tonal differences between the 
highlights and shadows of an image. In a 
high-contrast image, light areas are very bright 
and dark areas are very dark, with relatively few 
levels of gray between white and black. 
Contrast is decreased by adding grays.
NTSC
A...

Glossary             134
PAL
  (Phase Alternation by Line). A 625-line video 
broadcast format used in Western Europe, 
India, China, Australia, New Zealand, and parts 
of Africa.
Point
  A measurement of drawn or printed objects. 
One point equals 1/72 inch.
Resolution
A measure of the amount of detail contained in 
an image. Resolution can be measured in dots 
per inch or in pixels. Image sharpness and 
clarity improve as resolution increases.
RGB
A type of color scheme that defines color as...

135
VGA
Video Graphics Array. A high-resolution 
display adapter that provides a variety of video 
modes.
XGA
Extended Graphics Array. IBM’s next 
generation display adapter, XGA provides 
higher resolution than VGA.
5500.book  Page 135  Wednesday, August 4, 1999  4:41 PM 

Glossary             136
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137
 
IndexAAbout menu, 73
Accessories, 4, 10
Adjusting
bass, 66, 102
brightness, 63 to 65, 99 to 101
color balance, 64, 65, 100
color saturation, 65, 100, 101
contrast, 63 to 65, 99 to 101
position, 63
screen whiteness, 67, 103
sharpness, 65, 101
speaker tone, 66
speaker volume, 66
treble, 66
Air filter, cleaning, 111 to 112Amplification, 37 to 38
Anti-theft device, 15
Audio
connecting, 23, 26, 30, 34
menu, 59, 66, 67
BBar function, 94, 96
Bass, 66, 102
Batteries, changing, 17 to 18
Blank menu option,...

Index
            138
Buttons
control panel, 54 to 55, 61
Effects, 
see Effects buttons
remote control, 
see Remote ControlCCamcorder, adjusting the projected image, 
65, 66
Case, cleaning, 110
Ceiling, hanging the projector from, 67, 
103
Changing
batteries, 17 to 18
menu language, 68
menu settings, 61 to 62
Cleaning
air filter, 111 to 112
case, 110
lens, 110
Color
adjusting screen whiteness, 67
balance, 64, 65, 100
menu option, 64, 65
saturation, 65, 100, 101
COM port, changing, 91
Compatibility, 2...