Epson Projector Emp 821 User Manual

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Saving a Users LogoYou can record the image that is currently being projected as a users logo.
PROCEDURE
Project the image that you would like to use as a 
users logo, and then press the [Menu] button.
Select User’s Logo from the Extended menu, and 
then press the [Enter] button.
TIP
When a users logo is recorded, the previous users logo will be 
erased.1
Projector Remote Control
2
TIP
 If the User’s Logo Protect function of Password Protect is set to 
ON, a message is displayed and the users logo can not be 
recorded. To record a users logo, set User’s Logo Protect to 
OFF first. sp.29
 If keystone correction or E-Zoom have been carried out, they will be 
cancelled when the User’s Logo menu is selected. 
						

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Saving a Users Logo
Select Yes in the sub-menu, then press the [Enter] 
button.
The image to be recorded and a selection marquee 
box will be displayed. Move the marquee box to select 
the part of the image to use.
Tilt the [ ] button on the remote control or press the [ ], [ ], 
[ ] and [ ] buttons on the projectors control panel to select the 
area of the image to use as the users logo, and then press the 
[Enter] button.
3
TIP
When you press the [Enter] button on either the remote control or the 
projectors control panel, the image signal will be displayed at their 
original resolution, so if a signal with a resolution that is different 
from the panel resolution of the projector is projected, or if a video 
image is being projected, the display size will change.
4
TIP
Users logos can be saved at up to 480 
×
×× × 360 dots in size. 
						

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Saving a Users Logo
Select Yes at the confirmation screen, and then 
press the [Enter] button.Select the zoom rate in the Zoom rate setting screen, 
and then press the [Enter] button.
Select Yes at the confirmation screen, and then 
press the [Enter] button.
The image will then be saved. Once the image has been saved, 
the message Completed. will be displayed.
56
7
TIP
 Saving the users logo may take a few moments (about 15 seconds). 
Do not use the projector or any other sources which are connected to 
the projector while the users logo is being saved, otherwise it may 
result in errors in projector operation.
 Once a users logo has been saved, the logo setting cannot be 
returned to the factory default. 
						

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Optional Accessories and ConsumablesThe following optional accessories are available for purchase if required. This list of optional accessories is current as of June, 2004. Details of accessories are 
subject to change without notice.
* A special method of installation is required in order to suspend the 
projector from the ceiling. Please contact your dealer if you would like 
to use this installation method.
Optional Accessories Soft carrying case ELPKS27
Use this case if you need to carry the projector by hand.60 screen ELPSC07
80 screen ELPSC08
100 screen ELPSC10
A portable roll-type screen. (Aspect ratio
g 4:3)
50 portable screen ELPSC06 
A compact screen which can be carried easily. (Aspect ratio 4:3)VGA-HD15 PC cable ELPKC02 
(1.8 m (6 ft.) - for mini D-Sub 15-pin/mini D-Sub 15-pin)
This is the same computer cable as the projectors accessory computer 
cable.VGA-HD15 PC cable ELPKC09
(3 m (9.8 ft.) - for mini D-Sub 15-pin/mini D-Sub 15-pin)
VGA-HD15 PC cable ELPKC10
(20 m (65.6 ft.) - for mini D-Sub 15-pin/mini D-Sub 15-pin)
Use this extension cable if the accessory computer cable is too short.Component video cable ELPKC19
(3 m (9.8 ft.) - for mini D-Sub 15-pin/RCA male ×
 3)
Component video cable ELPKC27
(0.35 m (1.15 ft.) - for mini D-Sub 15-pin/RCA female ×
 3)
Use to connect a component video
g source.
Ceiling mount * ELPMB07
Use when installing the projector to a ceiling.
Ceiling plate* ELPFC03
Pipe 370 (370 mm (14.57 in.)/silver)* ELPFP04
Pipe 570 (570 mm (22.44 in.)/silver)* ELPFP05
Pipe 770 (770 mm (30.31 in.)/silver)* ELPFP06
Use when installing the projector on a high ceiling or a ceiling with 
veneer panels.Image presentation camera ELPDC04
Use to project books, OHP films and slides.ConsumablesSpare lamp ELPLP30
Use as a replacement for used lamps.Filter kit ELPAF06
(2 air filters)
Use as a replacement for used air filters. 
						

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GlossaryThe following is an explanation of some of the terms used in this guide which may be unfamiliar or which are not explained in the text of this guide itself. Further 
information can be obtained by referring to other commercially-available publications.
Abs. Color Temp.
The temperature of an object which is emitting light. If the absolute colour temperature is high, the colours tend to take on a 
bluish tinge. If the absolute colour temperature is lower, the colours tend to take on a reddish tinge.
Aspect ratio
The ratio between an images length and its height. HDTV images have an aspect ratio of 16:9 and appear elongated. The 
aspect ratio for standard images is 4:3.
Component video
Video signals which have the video brightness signals and colour signals separated, in order to provide better image quality. 
In high-definition TV (HDTV), it refers to images which consist of three independent signals: Y (luminance signal), and Pb 
and Pr (colour difference signals).
Composite video
Video signals which have the video brightness signals and colour signals mixed together. The type of signals commonly used 
by household video equipment (NTSC, PAL and SECAM formats). 
The carrier signal Y (luminance signal) and chroma (colour) signal which are contained in the colour bar are overlapped to 
form a single signal.
Contrast
The relative brightness of the light and dark areas of an image can be increased or decreased in order to make text and 
graphics stand out more clearly, or to make them appear softer. Adjusting this particular property of an image is called 
contrast adjustment.
Cool-down
This is the process by which the projectors lamp is cooled down after it has become hot through use. Cool-down is carried out 
automatically when the [Power] button is pressed to turn off the power. Do not disconnect the power cable while cool-down is 
in progress, otherwise the cool-down process will not work properly. If the cool-down period is not allowed to finish normally, 
the projectors lamp and internal components will remain at high temperatures, and this may shorten the operating life of the 
lamp or cause problems with the operation of the projector.
Dolby Digital
A sound format developed by Dolby Laboratories. Normal stereo is a 2-channel format which uses two speakers. Dolby 
Digital is a 6-channel (5.1-channel) system which adds to this a centre speaker two rear speakers and a sub-woofer.
HDTV
An abbreviation for High-Definition Television. It refers to high-definition systems which satisfy the following conditions.
Vertical resolution of 750p or 1125i or greater (p = progressive scanning
g, i = interlaced scanning
g)
Screen aspect ratio
g of 16:9
Dolby Digital
g audio reception and playback (or output)
Interlaced scanning
A method of image scanning whereby the image data is divided into fine horizontal lines which are displayed in sequence 
starting from left to right and then from the top to the bottom of the screen. The even-numbered lines and odd-numbered lines 
are displayed alternately.
Progressive scanning
A method of image scanning whereby the image data from a single image is scanned sequentially from top to bottom to create 
a single image.
Refresh rate
The light-emitting element of a display maintains the same luminosity and colour for an extremely short time. Because of this, 
the image must be scanned many times per second in order to refresh the light-emitting element. The number of refresh 
operations per second is called the refresh rate, and is expressed in hertz (Hz). 
						

							95
Glossary
Resize display
This function is used to allow images that have a resolution more than or less than the projectors panel resolution to be 
projected so that they fill the whole of the projection area.
SDTV
An abbreviation for Standard Definition Television. It refers to standard television systems which do not satisfy the conditions 
for High-Definition Television.
Security lock
A device consisting of a projector case with a hole in it that a commercially-available theft-prevention cable can be passed 
through in order to secure the device to a table or pillar. This projector is compatible with the Microsaver Security System 
manufactured by Kensington.
Squeeze mode
In this mode, wide-screen images in 16:9 mode are compressed in the horizontal direction so that they are stored on the 
recording medium as 4:3 images.
When these images are played back by the projector in squeeze mode, they are restored to their original 16:9 format.
sRGB
An international standard for colour intervals that was formulated so that colours which are reproduced by video equipment 
can be handled easily by computer operating systems (OS) and the Internet.
SVGA
A type of video signal with a resolution of 800 (horizontal) ×
 600 (vertical) dots which is used by IBM PC/AT-compatible 
computers.
S-Video
A video signal which has the luminance component and colour component separated in order to provide better image quality. 
It refers to images which consist of two independent signals: Y (luminance signal), and C (colour signal).
SXGA
A type of video signal with a resolution of 1280 (horizontal) ×
 1024 (vertical) dots which is used by IBM PC/AT-compatible 
computers.
Sync (synchronisation)
The signals output from computers and RGB video equipment have a specific frequency. If the projector frequency does not 
match this frequency, the resulting images will not be of a good quality. The process of matching the phases of these signals 
(the relative position of the crests and troughs in the signal) is called synchronisation. If the signals are not synchronized, 
problems such as flickering, blurriness and horizontal interference can occur.
Tr a c k i n g
The signals output from computers and RGB video equipment have a specific frequency. If the projector frequency does not 
match this frequency, the resulting images will not be of a good quality. The process of matching the frequency of these 
signals (the number of crests in the signal) is called tracking. If tracking is not carried out correctly, wide vertical stripes will 
appear in the projected images.
USB
An abbreviation for Universal Serial Bus. USB is an interface for connecting personal computers to peripheral devices which 
only support relatively low data transmission speeds.
UXGA
A type of video signal with a resolution of 1600 (horizontal) ×
 1200 (vertical) dots which is used by IBM PC/AT-compatible 
computers.
VGA
A type of video signal with a resolution of 640 (horizontal) ×
 480 (vertical) dots which is used by IBM PC/AT-compatible 
computers.
XGA
A type of video signal with a resolution of 1024 (horizontal) ×
 768 (vertical) dots which is used by IBM PC/AT-compatible 
computers. 
						

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List of ESC/VP21 CommandsCommand List
When a power on command is sent to the projector, the power will turn on 
and the projector will change to warm-up mode. When the power has 
turned on, a colon : (3Ah) will be returned.
When the projector executes a command, it returns a : and waits for the 
next command to be sent.
If command processing terminates with an error, the projector outputs an 
error message and then returns the : code.
* When issuing any of the above commands, tack a Carriage Return (CR) 
code (0Dh) on to the end.
Communication Protocol
Item
Command
Power ON/OFF
ON
PWR ON
OFF
PWR OFF
Signal selection
Computer1 (Auto)
SOURCE 1F
Computer1
SOURCE 11
Component Video1
SOURCE 14
Computer2 (Auto)
SOURCE 2F
Computer2
SOURCE 21
Component Video2
SOURCE 24
Video
SOURCE 41
S-Video
SOURCE 42
A/V Mute ON/OFF
ON
MUTE ON
OFF
MUTE OFF
A/V Mute Selection
Black
MSEL 00
Blue
MSEL 01
User’s Logo
MSEL 02
•
•• •Standard baud rate : 9600 bps•
•• •Data length : 8 bits•
•• •Parity : None•
•• •Stop bit : 1 bit•
•• •Flow control : None•
•• •Connector shape : D-Sub 9-pin (male)•
•• •Projector input port : Control (RS-232C) 
						

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List of ESC/VP21 CommandsCable Layouts
Serial connection•
•• •Connector shape : D-Sub 9 pin (male)•
•• •Projector input connector : Control (RS-232C)

 (PC serial cable) 
Signal
Function
GND
5
5
GND
GND
Signal wire ground
RD
2
3
TD
TD
Transmit data
TD
3
2
RD
RD
Receive data
DTR
4
6
DSR
DSR
Data set ready
DSR
6
4
DTR
DTR
Data terminal ready

USB connection•
•• •Connector shape : USB (type B)
 
(type B) 
						

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List of ESC/VP21 CommandsUSB Connection Setup
In order to control the projector using ESC/VP21 commands via a USB 
connection, the following preparations must be carried out.PROCEDURE
Download the USB driver (USB-COM Driver) from the 
EPSON website to your computer.
The URL is as follows.
 http://www.epson.co.uk/support/download/index.htmInstall the downloaded USB driver on your computer.
Read the instructions displayed on the download screen.Change the COM Port setting in the Extended 
menu to USB.Turn the projectors power off.Wait until the cool-down
g
 period has ended and a 
pip-pip confirmation buzzer sounds, and then turn 
on the power.
Once the projectors power has turned back on, communication 
via a USB Connection will then be possible.
12345
CAUTION
If you disconnect the power cable before the cool-down period has 
ended and a pip-pip confirmation buzzer sounds, the 
communication port will not change. 
						

							99
List of Supported Monitor Displays
* Connection is not possible if the equipment does not have a VGA output 
port.
The projection of some signals not listed in the table may still be possible. 
However, not all functions may be supported.Computer/RGB Video
Signal
Refresh rate
g 
(Hz)
Resolution 
(dots)
Resolutions for 
resize display
g 
(dots)
EMP-
821/81
EMP-61
VGA
g
60
640×480
1024×768
800×600
VGAEGA
640×350
1024×560
800×438
VESA
60/72/75/85,iMac*
640×480
1024×768
800×600
SVGA
g
56/60/72/75/
85,iMac*
800×600
1024×768
800×600
XGA
g
60/70/75/85,iMac*
1024×768
1024×768
800×600
SXGA
g
70/75/85
1152×864
1024×768
800×600
SXGA
60/75/85
1280×960
1024×768
800×600
SXGA
60/75/85
1280×1024
960×768
750×600
UXGA
g
60
1600×1200
1024×768
-
MAC13
640×480
1024×768
800×600
MAC16
832×624
1024×768
800×600
MAC19
1024×768
1024×768
800×600
MAC19
60
1024×768
1024×768
800×600
MAC21
1152×870
1016×768
794×600
SDTV
g(625i)
50
720×576
1024×768
800×600
SDTV(525i)
60
720×480
1024×768
800×600
SDTV(525p)
60
640×480
1024×768
800×600
HDTV
g(750p)
60
1280×720
1024×576
800×450
HDTV(1125i)
60
1920×1080
1024×576
800×450
Component Video/RGB Video
Signal
Refresh rate
g (Hz)
Resolutions (dots)
EMP-821/81
EMP-61
Aspect ratio
g 
4:3 
Aspect 
ratio 
16:9
Aspect 
ratio 
4:3 
Aspect 
ratio 
16:9
SDTV
g(525i)
(D1)
60
1024×768
1024×576
800×600
800×450
SDTV (625i)
50
1024×768
1024×576
800×600
800×450
SDTV (525p)
(D2)
60
1024×768
1024×576
800×600
800×450
HDTV
g(750p) 
16:9 (D4)
60
1024×768
1024×576
800×600
800×450
HDTV (1125i) 
16:9 (D3)
60
1024×768
1024×576
800×600
800×450
Composite Video/S-Video
Signal
Refresh rate
g (Hz)
Resolutions (dots)
EMP-821/81
EMP-61
Aspect ratio
g 
4:3 
Aspect 
ratio 
16:9
Aspect 
ratio 
4:3 
Aspect 
ratio 
16:9
TV (NTSC)
60
1024×768
1024×576
800×600
800×450
TV (PAL, 
SECAM)
50
1024×768
1024×576
800×600
800×450