Digital Projection LIGHTNING 22sx, LIGHTNING 28sx User Manual
The LIGHTNING Display Range of
SUPER-HIGH-BRIGHTNESS DIGITAL VIDEO PROJECTORS
LIGHTNING 22sx, LIGHTNING 25sx, LIGHTNING 28sx,
LIGHTNING 8gv, LIGHTNING 10gv, LIGHTNING 22gv
USER MANUAL
Revision C - 01/03/03
Part Number: LBV00056
Directives covered by this Declaration
89/336/EEC Electromagnetic Compatibility Directive, amended by 92/31/EEC & 93/68/EEC.
73/23/EEC Low Voltage Equipment Directive, amended by 93/68/EEC.
Products covered by this Directive
Large Screen Projector types LIGHTNING 8gv (20 series chassis) and LIGHTNING 22sx.
Basis on which Conformity is being declared
The products identified above comply with the protection requirements of the above EU
directives, and the manufacturer has applied the following standards:-
EN 55022: 1998 - Limits and Methods of Measurement of Radio Disturbance Characteristics
of Information Technology Equipment.
EN 55024:1998 - Limits and Methods of Measurement of Immunity Characteristics of
Information Technology Equipment.
EN 55103:1997 - Product Family Standard for Audio, Video, Audio-Visual and
Entertainment Lighting Control aparatus for Professional Use.
EN 60950: 1992 - Specification for Safety of Information Technology Equipment,
including Electrical Business Equipment.
The technical documentation required to demonstrate that the products meet the requirements
of the Low Voltage Directive has been compiled by the signatory below and is available for
inspection by the relevant enforcement authorities. The CE mark was first applied in May
2002.
Signed:
Authority: D.J. Quinn, Product Development Director
Date: 9th May 2002
Attention!
The attention of the specifier, purchaser, installer, or user is drawn to special measures and
limitations to use which must be observed when these products are taken into service to
maintain compliance with the above directives. Details of these special measures are
available on request, and are also contained in the product manuals.
Declaration of Conformity
LBV00056; Revision C - 01/03/03
Directives covered by this Declaration
89/336/EEC Electromagnetic Compatibility Directive, amended by 92/31/EEC & 93/68/EEC.
73/23/EEC Low Voltage Equipment Directive, amended by 93/68/EEC.
Products covered by this Declaration
Large screen video projector types LIGHTNING 22gv, LIGHTNING 25sx
and LIGHTNING 28sx.
Basis on which Conformity is being declared
The products identified above comply with the protection requirements of the above EU
directives, and the manufacturer has applied the following standards:-
EN 55022:1998 - Limits and Methods of Measurement of Radio Disturbance Characteristics
of Information Technology Equipment.
EN 55024:1998 - Limits and Methods of Measurement of Immunity Characteristics of
Information Technology Equipment.
EN 55103:1997 - Product family Standard for Audio, Video, Audio-Visual and
Entertainment Lighting Control apparatus for Professional Use.
EN 60950: 1992 - Specification for Safety of Information Technology Equipment,
including Electrical Business Equipment.
The technical documentation required to demonstrate that the products meet the requirements
of the Low Voltage Directive has been compiled by the signatory below and is available for
inspection by the relevant enforcement authorities. The CE mark was first applied in March
2002.
Signed:
Authority: D.J. Quinn, Product Development Director
Date: 4th March 2002
Attention!
The attention of the specifier, purchaser, installer, or user is drawn to special measures and
limitations to use which must be observed when these products are taken into service to
maintain compliance with the above directives. Details of these special measures are
available on request, and are also contained in the product manuals.
Declaration of Conformity
LBV00056; Revision C - 01/03/03
LBV00056; Revision C - 01/03/03
From time to time revisions will be issued to this manual. To maintain a correct and
up to date copy of the manual it is important that the instructions given in revision
notices are carried out.
The person carrying out the revision should complete the table below.
Revision No Revision Details Date Revised
Revision Record
LBV00056; Revision C - 01/03/03
Please read the following before proceeding
The Digital Projection LIGHTNING displays are Super-High-Brightness Video
Projectors capable of producing images of superb brightness and clarity with the
minimum of set-up time and operating support. The User Interface via the On
Screen Display is designed to allow the novice user rapid access to basic projector
operation while providing the expert with the ability to tailor the performance to his
exact requirements.
An Outline of Contents is given overleaf which provides an overview of the five
sections, A to E, in this manual and lists all the major topics covered along with
their location. This outline allows the user to direct themselves to the appropriate
section of this manual where a detailed contents page will provide the exact location
of the topic required. Section identifiers are also provided on the outside edge of the
pages to allow the quick location of individual sections.
The user is strongly recommended to read Section A: Overview before unpacking
or switching on the projector, paying particular attention to the safety warnings on
pages A—3 and A—4.
Disclaimer Digital Projection makes a sincere effort to ensure accuracy and quality of it's published materials;
however, no warranty, expressed or implied, is provided. Digital Projection disclaims any direct or indirect damages
resulting from the use of any information in this manual.
Introduction
Introduction
INTRODUCTION
LBV00056; Revision C - 01/03/03
Digital Projection Limited,
Greenside Way, Middleton, Manchester M24 1XX, UK.
Registered in England No. 2207264, Registered Office: As Above
Tel: +44 (0) 161 947 3300
Fax:+44 (0) 161 684 7674
Email:enquiries@digitalprojection.co.uk, service@digitalprojection.co.uk
Website: www.digitalprojection.co.uk
Digital Projection Inc.
55 Chastain Road, Suite 115, Kennesaw, GA 30144. USA
Tel: (USA) 770 420 1350
Fax: (USA) 770 420 1360
Email: powerinfo@digitalprojection.com
Website: www.digitalprojection.com
DMD and Digital Micromirror Device are trademarks of Texas Instruments Incorporated.
Introduction
INTRODUCTION
LBV00056; Revision C - 01/03/03
Section A: Overview
Packaging....................................................................A—1
Safety Advice...............................................................A—2
Initial Preparation ........................................................A—5
Components.................................................................A—8
Section B: System Installation
Installation Guidelines ..................................................B—1
Switching On.................................................................B—9
Section C: System Operation
Remote Control - Overview..........................................C—1
LED Indicators...............................................................C—6
Menu Operation...........................................................C—7
Main Menu - Overview ..............................................C—11
Channel Set-up Function ...........................................C—13
Image Mode...............................................................C—28
User Preferences .........................................................C—29
Test Patterns ...............................................................C—31
Projector Status ...........................................................C—33
Set Projector Address..................................................C—34
Add Computer ...........................................................C—35
Applying a New Signal Source..................................C—41
Adjusting the Displayed Image .................................C—44
Addressing Multiple Projectors...................................C—47
Introduction
Outline of Contents
INTRODUCTION
LBV00056; Revision C - 01/03/03
Section C: System Operation
Computer Control.......................................................C—48
Switcher Operation.....................................................C—53
Palm Pilot Control Utility Operation ...........................C—55
Section D: Advanced User Information
Screen Illuminance ......................................................D—1
DMD™ Operation and Usage ......................................D—2
Operational Flowcharts................................................D—5
Lenses .........................................................................D—15
Lens Adapters.............................................................D—26
Cables & Connections ................................................D—28
Technical Specification ..............................................D—32
Section E: Fault Finding & Maintenance
Trouble Shooting ...........................................................E—1
Maintenance ................................................................E—4
Appendix
Quick Set-up Reference.......................................................i
Menu System Review ........................................................iii
Introduction
INTRODUCTION
LBV00056; Revision C - 01/03/03
Packaging .........................................................................A—1
Removal of the Projector..............................................A—1
Lens Packaging ...........................................................A—1
Safety Advice ....................................................................A—2
Compliance with Regulatory Bodies ...........................A—2
Safety Warnings...........................................................A—3
Initial Preparation .............................................................A—5
Pre-Installation Check..................................................A—5
Remote Control Unit - Battery Installation ...................A—6
Hard-Wired Remote Control Connection.....................A—7
Components ......................................................................A—8
Projector Case ..............................................................A—8
LED Indicators ..............................................................A—9
Arc Lamp .....................................................................A—9
Safety Procedures for Xenon Lamps..........................A—10
Lenses.........................................................................A—11
Motorised Lens Mount................................................A—11
Electronics ..................................................................A—12
Analogue Input Board ...............................................A—12
Digital Micromirror Devices™ ....................................A—14
Cooling System ..........................................................A—14
Power Supplies ...........................................................A—15
Hard-Wired Remote Connection................................A—15
Overview
Section A: Overview
OVERVIEW
LBV00056; Revision C - 01/03/03
Components
Integrated Keypad ....................................................A—16
Remote Control ..........................................................A—16
Overview
OVERVIEW
LBV00056; Revision C - 01/03/03
Unpacking the Projector
To unpack the projector, first release the two fastening clips and remove the
banding. Next, using the finger holes provided, gently lift off the outer cover of the
carton.
Removal of the Projector
Due to the projector's weight (110 kgs), four people are required to lift the projector, one at each corner using the handrail provided. The purchaser is reminded to
use good practice in lifting the projector to avoid risk of back injury.
All packaging should be retained to provide maximum protection during future
shipping of the projector. To repack the projector, reverse the above procedure.
Contained within the packaging will be:
1 x LIGHTNING display Projector 1 x Remote Control Unit
1 x Handrail (attached) 1 x Remote Control Cable
4 x Mounting Feet (attached) 1 x AC Power Cable
Batteries 1 x User Manual
Certificate of Conformity
Should any of the above components be absent, please contact the dealer who
supplied the projector, or Digital Projection Limited (Digital Projection Inc. if in
North America) immediately.
Lens Packaging
Lenses are supplied as individual items and the packaging may differ depending on
the version ordered. Please refer to the instructions supplied with your lens.
A—1
Overview
Packaging
OVERVIEW
LBV00056; Revision C - 01/03/03
Compliance with Regulatory Bodies
The LIGHTNING 8gv, LIGHTNING 22gv, LIGHTNING 22sx, LIGHTNING
25sx and LIGHTNING 28sx have been designed to comply with IEC950 and UL
1950 (formal UL approval in process), the International safety standards for information technology and electrical business equipment. These standards impose stringent safety requirements on the construction and operation to prevent energy hazards, access to live parts and the risk of electric shock. The safety standards also
provide regulations on internal and external temperature increases, radiation levels,
mechanical stability and strength, enclosure construction and fire protection.
The LIGHTNING 8gv, LIGHTNING 22gv, LIGHTNING 22sx, LIGHTNING
25sx and LIGHTNING 28sx have been tested and found to comply with the limits
for a class A digital device, pursuant with Part 15 of the Federal Communication
Commission rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential area may cause harmful interference, in which case the user will be responsible for correcting any interference.
A—2
Overview
Safety Advice
OVERVIEW
LBV00056; Revision C - 01/03/03
Safety Warnings
All the safety warning in this manual are in bold italic type and can be identified by
the symbol shown on the left. A list containing all the warnings is given below. It is
recommended that time is taken to study these before installing or operating the projector.
The projector should always be lifted using the handrail. Do not attempt to lift the
projector by holding the covers or the lens.
The customer should never attempt to disassemble the lamp from its housing or to
dispose of it other than by returning it to Digital Projection.
Do not move or tamper with any seals or ducting panels on the projector or the
air flow could be disrupted and cause the projector to overheat. Always keep the
air inlets and outlets clear of any obstruction.
High Voltage, Danger of Death - the arc lamp power supply has a 30kV strike
pulse mechanism, which is active during lamp switch-on.
The projector should never, under any circumstances, be operated on its side with
the lamp pointing upwards when viewed from the rear
To avoid possible damage to the prism, lens and lent mount, a lens adapter must
by used if using POWER gv lenses on a LIGHTNING sx projector.
Never mount the projector near air conditioning or heating ducts, electrical
wiring or any materials which could be affected by the projector's operational
heat i.e. polystyrene ceiling tiles etc.
Never locate the projector where a laser beam may enter the lens, or fall on the
light engine otherwise catastrophic damage will result.
A—3
Overview
OVERVIEW
LBV00056; Revision C - 01/03/03
To prevent contamination of internal optical surfaces, never locate the projector
near any chemical or oil-based smoke machines or where smoke may enter the
projector.
At least 4 people are required for safe movement of the projector. The projector is
designed to be lifted using the handrail at the base. Do not attempt to lift the
projector by holding the front, the side covers or the lens.
Care should be taken when removing or attaching the projector feet to ensure that
the projector does not rest on its feet at an angle.
Never operate the projector with the cover removed and always switch off the
mains supply and disconnect the plug before removing the cover.
Never look into the lamp housing or the lens, or attempt to remove the lamp from
its housing when the projector is on.
OTHER IMPORTANT SAFETY CONSIDERATIONS
In order to ensure that correct internal airflows are maintained, and that the
projector complies with Electro-Magnetic Compatibility requirements, it should
always be operated with all of it's covers in place.
Ensure that nothing can be spilled on, or dropped inside the projector. If this does
happen, switch off and unplug the mains supply immediately. Do not operate the
projector again until it has been checked by qualified service personnel.
The projector must always be mounted in a manner which ensures free flow of air
into its air inlets and unimpeded evacuation of the hot air exhausted from its
cooling system. The air exit duct at the top of the projector can become hot during
operation and should not be touched by the operator. Heat-sensitive materials
should not be placed in the path of the exhausted air.
Do not move or tamper with any seals or ducting panels on the projector or the
air flow could be disrupted and cause the projector to overheat. Always keep the
air inlets and outlets clear of any obstruction.
A—4
Overview
OVERVIEW
LBV00056; Revision C - 01/03/03
Pre-Installation Check
Before mounting the projector in its intended location, the following pre-installation
routine must be performed:
1. Install the projector lens.
2. Ensure all the air flow inlet and outlet ducts are clear from obstruction.
3. Insert the power cord securely into the socket on the rear panel of the projector
and connect to an appropriate mains supply (refer to the specification label at
the rear of projector).
4. Switch on the projector and wait for approximately 30 seconds.
5. Check air is flowing out of the exit ducts on the top and left hand side of the
projector.
6. Insert batteries into the remote control unit (see overleaf).
7. With the screen or a wall illuminated, confirm the Menu System is operational
by pressing OSD ON then MENU on remote control (a main menu should be
clearly visible).
8. Turn the lamp off by depressing the LAMP OFF button on the remote control
for two seconds.
9. Power down the projector and disconnect from the mains supply.
10. Continue with the system installation.
A—5
Overview
Initial Preparation
OVERVIEW
LBV00056; Revision C - 01/03/03
Remote Control Unit - Battery Installation
The Remote Control Unit can be powered by 4 AAA (HP16/RO3/LR03) alkaline
batteries or by direct connection to the projector via a remote receiver or hard wire.
The battery compartment is located on the back of the
Remote Control. To remove the compartment cover,
insert a finger-nail into the recess provided to the right
of the cover and push to the right. While pushing to the
right, lift out the left hand side of the cover.
Insert the first two new batteries as shown below and
slide them to the back of the compartment. Insert the
remaining two batteries by pivoting them against the
electrical contacts and pushing down into place.
When the batteries are securely in place, replace the cover by aligning the stays on
the right hand side and pushing down the left hand side until it 'clicks' into place.
A—6
Overview
OVERVIEW
LBV00056; Revision C - 01/03/03
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A—7
0verview
OVERVIEW
LBV00056; Revision C - 01/03/03
Hard-Wired Remote Control Connection
The hard-wired control of the projector is made using the Remote Control Unit with
a cable connection directly to the projector.
The cable connects between the 3.5mm stereo jack on the remote control using the
screw locking mini jack plug and the XLR connector on the projector.
The remote control does not require batteries when directly connected to the projector. The connection to the projector may be extended using industry-standard
audio XLR extension cables between the XLR on the projector and the hardwired remote cable. The total cable length should not exceed 100m (330ft).
For further information on the hard-wired remote adapter wiring, see Cables and
Connections, D—28.
✍
A—8
Overview
OVERVIEW
LBV00056; Revision C - 01/03/03
Projector Case
The projector covers are manufactured from tough polycarbonate material and are
attached to a rigid aluminium space frame by screws.
The projector should always be lifted using the handrail. Do not attempt to lift the
projector by holding the covers or the lens. Never use the handrail to ceiling
mount the projector.
Do not remove any of the covers. No user-serviceable parts inside.
)
Components
450mm
(17.75")
493mm
(19.40"
790mm (31.10")
1035mm (40.75")
1125mm (44.30")
465mm
(18.30")
744mm
(29.30")
A—9
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OVERVIEW
LBV00056; Revision C - 01/03/03
LED Indicators
There are 3 Light Emitting Diodes on the front of the projector which indicate the
status of the projector. The top red LED is used to indicate that power is applied to
the projector and that it is turned on. The middle green LED indicates normal
operation and flashes when the projector is receiving a signal from the remote
control unit. The bottom red LED indicates that the lamp has failed or is switched
off. For further information see System Operation, C—6.
Arc Lamp
The projector uses a specialised, high pressure xenon arc lamp designed to operate
in conjunction with Digital Projection's optical condenser system and specialised
power supply unit. The lamp achieves maximum brightness within 1 minute of
strike and is designed for an operating life of greater than 750 hours.
The operator is advised to switch off the lamp using the 'LAMP OFF' button on the
remote control, and allow the cooling system to run on for five minutes before
switching off the mains supply. The lamp is contained in a special safety housing to
dissipate heat and to make changing the lamp as easy as possible (see Fault Finding
and Maintenance, E—6).
The customer should never attempt to disassemble the lamp from its housing or to
dispose of it other than by returning it to Digital Projection.
Red LED
Green LED
Red LED
Front IR Receiver
A—10
Overview
OVERVIEW
LBV00056; Revision C - 01/03/03
Xenon lamps can explode without warning because they contain gas under high
pressure and are made of fused quartz, which is brittle like glass.
Do not allow anyone to be exposed to a Xenon lamp except when wearing the prescribed personal protective equipment detailed in Section E-6 - Lamp Safety.
Xenon lamps produce high intensity light and ultraviolet radiation. Never look
directly into a lighted lamp or at the light emanating from the lens or lamp module. To do so may cause severe eye damage.
Operate Xenon lamps only when installed in the lamp module.
Xenon lamps are hazardous to handle and may explode at any time.
The lamp must always be kept in its protective container (as supplied by the manufacturer) when not in the module.
Before igniting a Xenon lamp, it must be installed in a module.
Module covers and the output window must remain installed at all times when
working with an illuminated Xenon lamp.
Digital Projection recommends that all Xenon lamps be replaced after 750 hours
of use.
Digital Projection will not be responsible for any damages resulting from failure
to comply with this instruction.
See Section E-6 Lamp Safety Information for further details.
Safety Procedures for Xenon Lamps
A—11
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OVERVIEW
LBV00056; Revision C - 01/03/03
Lenses
Five lenses have been developed specifically for the LIGHTNING sx and LIGHTNING gv range of projectors with zoom ratios of 1.5 - 2.0:1, 2.0 - 2.5, 2.5 - 4.0:1,
4.0 - 7.0:1. In addition a fixed lens of 1.2:1 (actual 1.5:1) is available.
Using a lens adapter, the following gv series lenses may also be used, albeit with
modified throw ratios and limited lens shift capabilities: 0.82:1 (fixed) and zoom
lenses of 1.5 - 2.5:1, 2.5 - 4.0:1, 4.0 -7.0:1 and 7.0 - 15.0:1.
Motorised Lens Mount
The LIGHTNING projectors incorporate a motorised lens mount. This mounting
allows you to control the zoom/focus via the remote control.
As the lens mount attaches to the lens, the mounting mechanism must be released
before a lens can be fitted or removed. To release the lens mount turn the mounting
lever anti-clockwise (upwards). After fitting a lens the lever should be turned
clockwise to engage the mechanism.
When engaging the lens mount, the lens may have to be rotated slightly in order
for the lens mounting to connect correctly.
Lens Mount Engaged
Lens Mount Released
A—12
Overview
OVERVIEW
LBV00056; Revision C - 01/03/03
Optics
The lamp faces onto a 'cold mirror' which directs the light beam into a condenser.
A prism then splits the concentrated beam from the condenser into red, green and
blue light using dichroic filters and directs the light onto separate DMDs™. The
images produced by the three DMDs™ are then combined by the prism to form a
full colour image and directed into the lens for projection.
The optical system is precisely aligned in the factory. If it is moved there could be
a reduction in light output and image display quality.
Electronics
The main electronic components of the projector are the Analogue Input Board,
Digital Processing Card, Formatter Card and the three Display Boards (each of
which contains a Digital Micromirror Device™).
The Analogue Input Board, situated at the rear of the projector, converts analogue
inputs to digital signals and routes them to the digital processing card.
The Digital Processing Card stores the channel configurations and any on-screen
adjustments such as brightness, contrast etc. These settings are applied to the
incoming signal for transfer to the Formatter Card.
The Formatter Card translates the digital signal into a format that the Digital
Micromirror Devices™ can read.
Analogue Input Board
The Analogue Input Board located at the rear of the projector provides all the
required connections for video, computer and remote control inputs. The input
board is split in three main sections - Power, Source and Control (see overleaf).
A—13
0verview
OVERVIEW
LBV00056; Revision C - 01/03/03
SOURCE
Inputs 1, 2, 3 - Each of these inputs can be used for different signal sources. RGB,
Hs Vs and Hs+Vs are used with a computer input, Composite/G is used with a
composite signal (such as NTSC), C and Y (S-VIDEO) are used with a VHS video
player and Y Pr Pb are used with Betacam or component sources.
Inputs 4 & 5 - These inputs provide for standard definition, 50hz and 60hz serial
digital video signals.
CONTROL
Ext Wired Remote - Input providing direct connection with the remote control
unit.
Video Switcher - Control input and output for video switcher configurations.
Service Port - Reserved for use by authorised technical support personnel only.
Computer (In/Out) - Provides data input and output ports for computer control and
for daisy chain connector to multiple projectors.
Mains Input
POWER
Mains Input - For connection of 208 - 240V ac @ 50 - 60Hz
Infra Red
Receiver
INPUT 1
INPUT 2
INPUT 3
Component
S-Video
Composite
SOURCE
R/Pr
G/Y
B/Pb
C
—
—
CVbs
Source
Section
H/HV
Y
—
V
—
—
—
—
XLR Remote
Interface
Ext Remote
CONTROL
Video Switcher
LED Run Time
Display
Service
Computer In
Computer Out
Input
6
Control
Section
DIGITAL
Input 4
Input 5
A—14
Overview
OVERVIEW
LBV00056; Revision C - 01/03/03
Digital Micromirror Devices™
A Digital Micromirror Device™ (DMD™) is a digital light modulator fabricated
from moving aluminum mirrors. Each mirror, which acts as a pixel, is suspended
between two posts by a thin torsion hinge and can be tilted to the left to produce
a bright pixel or to the right for a dark pixel. There are three DMDs™ in the projector, one for each of the primary colours, each containing 786,432 mirrors arranged
in a 1024 x 768 array (gv models) or 1,310,720 mirrors arranged in a 1280 x 1024
array (sx models).
Cooling System
During normal operation considerable heat is generated inside the projector,
therefore, an air cooling system is provided. This consists of a powerful fan which
draws cool air through specially designed air ducts within the case to distribute it
over the lamp and other components. The cooling system provides maximum
cooling whilst minimising noise output.
Do not move or tamper with any seals or ducting panels on the projector or the
air flow could be disrupted and cause the projector to overheat. Always keep the
air inlets and outlets clear of any obstruction.
Casing
Inactive Pixels
1024 x 768 or
1280 x 1024 Array
Light Shield
A—15
0verview
OVERVIEW
LBV00056; Revision C - 01/03/03
Power Supplies
The General Power Supply provides a range of low voltage rails to the electronics.
The Xenon Arc Lamp has a separate high current power supply.
High Voltage, Danger of Death - the arc lamp power supply has a 30kV strike
pulse mechanism, which is active during lamp switch-on.
Hard-Wired Remote Connection
The hard-wired remote connection provides direct connection between the remote
control and the projector. The direct hard wired connection is provided as standard
with LIGHTNING 8gv, 22sx, 22gv, 25sx and 28sx projectors.
This cable has an XLR plug to 3.5mm stereo locking jack plug. The cable may be
extended using industry standard microphone XLR cables up to 100 metres (330ft).
A—16
Overview
OVERVIEW
LBV00056; Revision C - 01/03/03
Integrated Keypad
An integrated keypad is provided on the rear of the projector to allow the projector
to be controlled without the remote control. The operation of this keypad is identical
to that of the remote control (see System Operation, C—1 for further details).
Remote Control
All the functions of the LIGHTNING display projector are controlled using the
remote control or the integrated keypad on the rear of the projector. The remote
control can be connected to the projector via the remote receiver or hard-wired
remote adapter. This connection simultaneously powers the control unit, illuminates
the remote controls back panel and relays commands back to the projector.
To allow the operator more flexibility the remote control can be operated by four
AAA batteries, producing infrared signals which are detected by sensors located at
the front and rear of the projector. The Remote Control unit is designed to transmit
command signals to the projector from a maximum distance of 80m (266ft).
Very bright fluorescent lighting or Infra Red translation systems may saturate the
projectors Infrared receivers rendering remote control inoperative.
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