Digital Projection LIGHTNING 10sx And LIGHTNING 15sx User Manual

							For optimum viewing, the screen should be a flat surface perpendicular to the floor.
The bottom of the screen should be 1.2m (4 feet) above the floor and the front row
of the audience should not have to look up more than 30° to see the top of the
screen (see opposite).
The distance between the front row of the audience and the screen should be at least
twice the screen height and the distance between the back row and the screen should
be a maximum of 8 times the screen height. The screen viewing area should be
within a 60° range from the face of the screen.
If you intend to use a rear projection screen you must ensure you have sufficient
distance behind the screen for the projector to be correctly located (see B—4). Rear
projection has the advantage that the projector cannot be seen and higher ambient
light levels can be tolerated. Although the image can be flipped to rear projection
using the Image Mode Menu (see system operation, C—28) and displayed without
the need for extra mirrors or equipment, it makes the installation more complicated
and advice should be sought from your local dealer before attempting an installation
in this way.
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Screen Width
(feet)
8 0
10 0
12 0
14 0
16 0
20 0
30 04 x 3
6 0
7 6
9 0
10 6
12 0
15 0
22 65 x 4
6 5
8 0
9 7
11 2
12 10
16 0
24 08 x 5
5 0
6 3
7 6
8 9
10 0
12 6
18 914 x 9
5 2
6 5
7 9
9 0
10 8
12 10
19 416 x 9
4 6
5 8
6 9
7 11
9 0
11 4
16 11Screen Height (feet/inches) Needed to Display Full Image with Aspect Ratio: 
						

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SCREEN
60° 2H 8H
AISLE AISLE
AISLE
2H
1.2m (4 Ft)30°
H
VIEWING AREA 
						

							Positioning the Projector
Correct positioning of the projector is essential to achieve the best results. Before
deciding on the final location of the projector please ensure you read the following 
information very carefully.
The projector must be situated in a clean, dry environment and away from direct
sunlight or heat. Make sure you locate the projector so that the air inlets and outlets
for the cooling system are not obstructed.
The projector should never, under any circumstances, be operated with the lamp
pointing upwards (i.e. with the right hand side facing downwards).
PROJECTOR HEIGHT
The default height for positioning the projector is at the centre of your screen.
However, you can set the projector above or below the centre and adjust the image
using the ‘Lens Shift’ (Rising/Falling Front) facility to maintain a geometrically
correct image. Typically, the projector can be located up to the top or bottom of the
screen without geometrical distortions, but please refer to the lens data sheets for
information on the maximum rising/falling front correction available for a particular
lens. In some cases the projector may also be tilted without introducing observable
distortions.
HORIZONTAL POSITION
As with vertical positioning, the default horizontal position of the projector is at the
centre of the screen. However, the projector can be mounted up to one quarter
screen width left or right of image centre and the ‘Horizontal Lens Shift’ function
used to centre the image on screen without geometric distortion.
Vertical Lens Shift and Horizontal Lens Shift can be used in combination, 
however the extent of their individual ranges will be reduced according to the
amount of shift used i.e. Vertical Lens Shift is maximised when Horizontal Lens
Shift is centred and vice versa.
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							THROW DISTANCE - FIXED RATIO LENSES
It is important to position the projector at the right distance from the screen. This
Throw Distance is defined as the distance from the screen to the front of the 
projector case. It is calculated by taking into account your screen width, the type of
lens used, and the aspect ratio you intend to display.
If you intend to display images with different aspect ratios, it is recommended that
you position the projector at a distance from the screen which will allow you to 
project images at the maximum fractional aspect ratio (16:9 = 1.78, 5:4 = 1.25), i.e.
the image with the largest width. Failure to do so could result in smaller  fractional
aspect ratio images exceeding the feight and/or width of your screen. 
THROW DISTANCE - ZOOM LENSES
When using a zoom lens, exact positioning of the projector less important because
the image size can be adjusted. However, the projector must be located within the
Throw Distance range imposed by the minimum and maximum lens ratios.
If you intend to display images with different aspect ratios, it is recommended that
you define your own Throw Distance range. To define the minimum screen 
distance, use the lowest lens throw ratio associated with the smallest fractional
aspect ratio used. To define the maximum screen distance, use the largest lens throw
ratio associated with the largest fractional aspect ratio used.
CALCULATING THE THROW DISTANCE
To calculate the distance between the screen and the front of the projector case use
the equation given below. The tables overleaf give the actual lens throw ratios (with
tolerances) and lens extensions. Perform the calculation for each end of the zoom
range to define the throw distance range. The tables also give the tolerance in throw
ratio if more accurate calculations are required.
Distance Required = (Screen Width x Actual Lens Throw Ratio) + Offset
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							Nominal Actual Lens Throw Ratio on a LIGHTNINGsxLens
LIGHTNINGsxprojector for Aspect Ratios:- Extension
Lens Throw Ratio Minimum Maximum (mm)
1.2:1 Fixed 1.22 1.22 267
2.5 - 4.0:1 @ 2.5:1 1.50 1.99 152
2.5 - 4.0:1 @ 4.0:1 2.02 2.47 159
4.0 - 7.0:1 @ 4.0:1 2.47 3.91 108
4.0 - 7.0:1 @ 4.0:1 3.96 6.89 206
The lenses developed for the POWERgvseries may be used with a LIGHTNINGsx
projector, albeit with limited lens shift capabilities and the use of an adapter. It
should be noted that the throw ratios of the POWERgvlenses, when used on a
LIGHTNINGsxprojector are modified and the following table should be used to cal-
culate the screen distances required.
Nominal Lens Actual Throw Ratio on a LIGHTNINGsxLens Rising
POWERgvLens  projector for all Aspect Ratios Extension Front
Throw Ratio Minimum Maximum ± pixels
Ultra Wide Angle N/A N/A N/A N/A
1.5 - 2.5:1 1.20 2.00 85 125
2.5 - 4.0:1 2.00 3.20 55 125
4.0 - 7.0:1 N/A N/A N/A N/A
Thegvlenses marked N/A are not recommended for use on the LIGHTNING sx
projector due to the serious vignetting of the image. It should be noted that under
certain circumstances the specified luminance, uniformity and resolution may not
be maintained.
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							Mounting the Projector
Now that you know the distance from the screen that the projector must be located
you can decide on which type of mounting will best suit your requirements. The
easiest method of mounting is to rest the projector on a desk or table directly in
front of the display screen. If you intend to use this method, make sure that the desk
or table is strong enough to support the projectors weight safely.
Never mount the projector near air conditioning or heating ducts, electrical
wiring or any materials which could be affected by the projectors operational
heat i.e. polystyrene ceiling tiles etc. The projector should never, under any 
circumstances, be operated with the lamp pointing upwards (i.e. with the right
hand side of the projector facing downwards).
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.
MOUNTING FEET
There are four mounting points located on the underside of the projector for the
attachment of the mounting feet. Each foot is screwed into the mounting points and
tightened using a spanner on the flats of the foot shaft.
The projector can be levelled using the black adjustment rings on each foot which
allow 25mm (1 inch) of movement. The rubber foot base incorporates a ball socket
connector which will form to an uneven surface to assist in mounting.
Although the adjustment rings on the projector feet will allow the slight raising or
lowering of the front of the projector, it is recommended that projector is made
level and the lens shift feature is used to perform this function.
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							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.
External Cable Routing
In order to help prevent cross coupling, it is good working practice to avoid running
signal cables and mains cables closely bundled together over long distances.
Where this advice is not observed, the user may experience poor picture quality,
inexplicable and spurious operation, or, in extreme cases, cause hardware damage.
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Adjustment
Ring
Rubber
Foot Base
Foot Shaft
Connecting Screw
Ball Socket
Connector
1125mm (44.30)
744mm
(29.30)465mm
(18.30)
790mm (31.10) 
						

							-
First of all, connect the video signal input source to the Analogue Input Board at the
back of the projector (refer to Signal Sources for details on different sources and
how to connect them). Then plug the projector into the mains supply and switch it
on (using the on/off switch at the back of the projector). Switch on the video source.
The projector will select the first valid signal as defined in the User Preferences and
display the image using the Factory Default parameters. The quality of the image
can be adjusted using the remote buttons. Refer to Adjusting the displayed Image
(System Operation, C—44) for further information.
Never operate the projector with the cover removed and always switch off the
mains supply and disconnect the plug before removing the cover.
If there is no image on the screen, check that the video source is operating and 
connected to the correct input, e.g. if it is a one lead composite source, then it
should be plugged into the Composite/G input.
After initial power-up, you can define how the projector will subsequently start-up
by using the User Preferences Menu (see System Operation, C—29).
Signal Sources
The projector accepts composite, S-Video, Y Pr Pb and RGB input signals. These
signals constitute most of the video and computer formats available. The analogue
input board at the back of the projector provides three rows of 5 input ports. Each
row is configured to accept any of the given signal types by using the appropriate
port combination. The provision of three rows (inputs 1, 2 and 3) allows three signal
types to be connected at any one time.
The correct port combination must be used in order to display the image.
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Switching On
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							COMPOSITE SIGNALS
PAL, SECAM (Europe and Australia) and NTSC (US and Japan) signals, are
composite video formats used by televisions and VCRs. They are connected by one
lead to the COMPOSITE/G port in the source section on the rear panel.
S-VIDEO SIGNALS
VCRs and most video cameras produce an S-Video format. They are connected to
the projector ports Y and C.
Y Pr Pb SIGNALS
A Betacam signal requires connection to the Y, Pr and Pb ports.
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INPUT 2 INPUT 1
INPUT 3Audio
SwitcherVideo
Switcher
ComputerExt
Remote
In
Out
Input 4
Input 5DIGITAL
Input 6
CONTROL SOURCE
Component
S-Video
CompositeR/Pr
C
ÑG/Y
Ñ
CVbsB/Pb
Y
ÑH/HV
Ñ
ÑV
Ñ
Ñ
INPUT 2 INPUT 1
INPUT 3Audio
SwitcherVideo
Switcher
ComputerExt
Remote
In
Out
Input 4
Input 5DIGITAL
Input 6
CONTROL SOURCE
Component
S-Video
CompositeR/Pr
C
ÑG/Y
Ñ
CVbsB/Pb
Y
ÑH/HV
Ñ
ÑV
Ñ
Ñ
INPUT 2 INPUT 1
INPUT 3Audio
SwitcherVideo
Switcher
ComputerExt
Remote
In
Out
Input 4
Input 5DIGITAL
Input 6
CONTROL SOURCE
Component
S-Video
CompositeR/Pr
C
ÑG/Y
Ñ
CVbsB/Pb
Y
ÑH/HV
Ñ
ÑV
Ñ
Ñ 
						

							INPUT 2 INPUT 1
INPUT 3Audio
SwitcherVideo
Switcher
ComputerExt
Remote
In
Out
Input 4
Input 5DIGITAL
Input 6
CONTROL SOURCE
Component
S-Video
CompositeR/Pr
C
ÑG/Y
Ñ
CVbsB/Pb
Y
ÑH/HV
Ñ
ÑV
Ñ
Ñ
INPUT 2 INPUT 1
INPUT 3Audio
SwitcherVideo
Switcher
ComputerExt
Remote
In
Out
Input 4
Input 5DIGITAL
Input 6
CONTROL SOURCE
Component
S-Video
CompositeR/Pr
C
ÑG/Y
Ñ
CVbsB/Pb
Y
ÑH/HV
Ñ
ÑV
Ñ
Ñ INPUT 2 INPUT 1
INPUT 3Audio
SwitcherVideo
Switcher
ComputerExt
Remote
In
Out
Input 4
Input 5DIGITAL
Input 6
CONTROL SOURCE
Component
S-Video
CompositeR/Pr
C
ÑG/Y
Ñ
CVbsB/Pb
Y
ÑH/HV
Ñ
ÑV
Ñ
Ñ
COMPONENT VIDEO SIGNALS WITH SEPARATE SYNC
When using a component video input which has a separate sync, and the sync is
composite (combined horizontal and vertical), the connections are as shown below.
RGB Hs+Vs AND RGB Hs Vs SIGNALS
Computer signals are separated into R, G and B with either separate or combined
horizontal and vertical syncs (Hs Vs or Hs+Vs). SVGA compatible computers, such
as IBM compatible PCs, have separate syncs and should be connected as follows.
Apple Macintosh (series II) computers output a combined sync and therefore have
one connection less than an SVGA computer. The R, G, B and combined horizontal
and vertical syncs are connected as shown below.
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LBV00056; Revision A - 23/08/99