Digital Projection Lightning 30sx+m, 40sx+m User Manual

							page 2.3       105-681B January 2007
Digital Projection LIGHTNING 30sx+m, 40sx+m User Manual 2. Installation
Fitting the image to the screen
It is important that your screen is of sufficient height and width to display images at
all the aspect ratios you are planning to use.
Use the conversion chart, or the sample calculations below to check that you are
able to display the full image on your screen. If you have insufficient height or width,
you will have to reduce the overall image size in order to display the full image on
your screen.
Notes
1          2         3         4          5         6          7         8          9        10
Screen width
Screen height
4:3
5:4
16:9
2.35:1
Aspect ratio 10
9
8
7
6
5
4
3
2
1
2.35:1 aspect ratio
W = H x 2.35H = W x 0.426
1.85:1 aspect ratio
W = H x 1.85H = W x 0.54
16:9 aspect ratio
W = H x 1.777H = W x 0.562
4:3 aspect ratio (aspect ratio at native resolution)
W = H x 1.333H = W x 0.75
5:4 aspect ratio
W = H x 1.25H = W x 0.8
1.85:1 
						

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2. Installation Digital Projection LIGHTNING 30sx+m, 40sx+m User Manual
Positioning the screen and projector
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.
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.
Notes
The projector should be
installed as close to the
power outlet as possible.
The power connection should
be easily accessible, so that it
can be disconnected in an
emergency.
Ensure that there is at least
30cm (12in) of space between
the ventilation outlets and
any wall, and 10cm (4in) on
all other sides.
Do not install the projector
close to anything that might
be affected by its operational
heat, for instance,
polystyrene ceiling tiles,
curtains etc.
The image can be flipped for
rear projection (see section 4.
Using the menus, Image
menu) and displayed without
the need for extra mirrors or
equipment.
However, you must ensure that
there is sufficient distance
behind the screen for the
projector to be correctly located.
Rear installation is generally
more complicated and advice
should be sought from your
local dealer before attempting it. 
						

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Digital Projection LIGHTNING 30sx+m, 40sx+m User Manual 2. Installation
Notes
For more information about
Throw ratio factor (TRF), see
Useful lens calculations, later
in this section.
Choosing a lens
A number of lenses are available for use with the projector. Which lens you choose
will depend on the screen size, image aspect ratio and projection distance.
If you are simply connecting the output of a camera or computer directly to the
projector, then the image size (in pixels) may well be fixed. If, however, you are
using commercially available image processing equipment, such as the Digital
Projection MMS 1000 or VIP1000, you may be able to resize the image to fit the
DMD.
If the image does not fill the full width of the DMD, this effectively increases the
throw ratio of the lens. This can be corrected for by applying a Throw ratio factor.
Method one: using the lens charts
For the screen sizes listed below, use the chart on the following page, to choose the
most suitable lens.
any full width image, including:
4:31400 x 1050 pixels (native resolution)
16:91400 x 788 pixels
1.85:11400 x 757 pixels
2.35:11400 x 596 pixels
A Throw ratio factor (TRF) of 1.07 would need to be applied, for the chart to be
correct for the following image (multipy the required screen width by 1.07 before
consulting the chart):
5:4 full height1313 x 1050 pixels
Method two: by calculation
See the calculations, on the page immediately following the lens chart. 
						

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2. Installation Digital Projection LIGHTNING 30sx+m, 40sx+m User Manual
Notes
This chart has a TRF of 1.0, for
use with the following images:
Choosing a lens using the lens charts
Full width images
Use the chart below to choose which lens best suits your application.
example
• For a screen width of 10m at a distance of 35m, the 2.77 - 4.51: 1 zoom lens
(107-146) would be best suited.
• For the same screen size at a distance of 60m, the 4.51 - 7.53: 1 lens (107-147)
would be best suited.
if you need to be more precise, then use the calculations on the page
immediately following the lens charts.
Screen width
               10             20              30             40             50             60             70             80 metres
               33             66              98            131          164           197           230           262 feet
Throw distance 66 20
49 15
33 10
16 5
2.35:1 (Scope),
1.85:1, 16:9,
1.66:1 (Vista) and 4:3
1.2 : 1 fixed lens
(1.2 - 2m)
107-143 0.73 : 1 fixed lens
107-141 1.2 : 1 fixed lens
(3 - 15m)
107-1421.5 - 2.02 : 1
zoom lens
107-1442.02 - 2.77 : 1
zoom lens
107-1452.77 - 4.51 : 1
zoom lens
107-1464.51 - 7.53 : 1
zoom lens
107-147 
						

							page 2.7       105-681B January 2007
Digital Projection LIGHTNING 30sx+m, 40sx+m User Manual 2. Installation
Notes
This chart has a TRF of 1.07,
for use with the following image:
5:4 full height image (TRF = 1.07)
Use the chart below to choose which lens best suits your application.
if you need to be more precise, then use the calculations on the page immediately
following the lens charts.
Screen width
               10             20              30             40             50             60             70             80 metres
               33             66              98            131          164           197           230           262 feet
Throw distance 66 20
49 15
33 10
16 5
5:4
1.2 : 1 fixed lens
(1.2 - 2m)
107-143 0.73 : 1 fixed lens
107-141 1.2 : 1 fixed lens
(3 - 15m)
107-1421.5 - 2.02 : 1
zoom lens
107-1442.02 - 2.77 : 1
zoom lens
107-1452.77 - 4.51 : 1
zoom lens
107-1464.51 - 7.53 : 1
zoom lens
107-147
Lens charts continued 
						

							page 2.8       105-681B January 2007
2. Installation Digital Projection LIGHTNING 30sx+m, 40sx+m User Manual
Notes
The Throw ratio for a particular
lens is fixed, but assumes that
the image fills the width of the
DMD.
For images that do not fill the
width of the DMD, the Throw
ratio is effectively increased. To
correct for this in these
calculations, a Throw Ratio
Factor (TRF) is used.
The lenses available and their
part numbers are listed below:
0.73 : 1 fixed lens 107-141
1.2 : 1 fixed lens (3 - 15m) 107-142
1.2 : 1 zoom lens (1.2 - 2m) 107-143
1.5 - 2.02 : 1 zoom lens 107-144
2.02 - 2.77 : 1 zoom lens 107-145
2.77 - 4.51 : 1 zoom lens 107-146
4.51 - 7.53 : 1 zoom lens 107-147
Method two: Choosing a lens by calculation
For any screen size not listed above, or if you need to be more precise, then use the
calculations below.
• Identify actual width of the image in pixels.
• Calculate the Throw Ratio Factor:TRF =
DMD width (1400)
Image width in pixels
• Identify the screen width required.
• Identify the throw distance required.
Throw distance calculations are based on the distance from the outer end of the
lens, which will vary from lens to lens. Once a lens has been chosen, the figures
can be checked using the more accurate figures given on the next page.
• Calculate the throw ratio required.Throw ratio =
Throw distance
Screen width x TRF
• Choose a lens with the required throw ratio.
Check from the lens charts or the specification (see section 6. Appendix), that
the lens chosen has a sufficient throw range.
example
• An unresized image, 1280 x 1024 pixels, screen width 11m, throw distance 40m
from the outer end of the lens.
• Throw Ratio Factor (TRF) =
1400 = 1.09
1280
• Throw ratio required =
         40 = 3.34
11 x 1.09
• Choose the 2.77 - 4.51: 1 zoom lens (107-146) 
						

							page 2.9       105-681B January 2007
Digital Projection LIGHTNING 30sx+m, 40sx+m User Manual 2. Installation
Notes
The Throw ratio for a particular
lens is fixed, but assumes that
the image fills the width of the
DMD.
For images that do not fill the
width of the DMD, the Throw
ratio is effectively increased. To
correct for this in these
calculations, a Throw Ratio
Factor (TRF) is used.
Lens extension is measured
when the lens is focussed at
infinity, and fully extended. At
other focus settings, the
extension could be up to 10mm
less
Useful lens calculations
The following lens calculations may be useful:
Throw ratio =
Throw distance
Screen width
Throw ratio factor (TRF) =
DMD width in pixels =1400
image width in pixels image width in pixels
Therefore:
Screen width =
Throw distance (from outer end of lens)
Throw ratio x TRF
Throw distance = Screen width x Throw ratio x TRF
The throw distance calculated above is to the outer end of the lens. For each lens,
the nominal distance between the front of the projector and the outer end of the lens
(lens extension) will be as listed below:
lens extension
0.73 : 1 fixed lens 107-141 204 mm (8.0 in)
1.2 : 1 fixed lens (3 - 15m) 107-142 268 mm (10.6 in)
1.2 : 1 zoom lens (1.2 - 2m) 107-143 268 mm (10.6 in)
1.5 - 2.02 : 1 zoom lens 107-144 194 mm (7.6 in)
2.02 - 2.77 : 1 zoom lens 107-145 159 mm (6.3 in)
2.77 - 4.51 : 1 zoom lens 107-146 152 mm (6.0 in)
4.51 - 7.53 : 1 zoom lens 107-147 118 mm (4.6 in)
lens extension,
measured from front
of corner post 
						

							page 2.10       105-681B January 2007
2. Installation Digital Projection LIGHTNING 30sx+m, 40sx+m User Manual
Notes
Each time a new lens is fitted
to the projector, the
calibration procedure must
be carried out. See Lens
menu, in Section 4. Using the
menus.
Make sure the rear lens cap is
removed, before fitting the lens.
Be careful not to scratch the
lens surfaces. If you do
accidentally touch a lens, then
clean the surface using a lens
paper.
The zoom drive mechanism
should always be set to the
engaged position, even when
using the non-zoom lens, as
it provides an extra level of
protection, should the lens
release lever fail.
Lens
release
leverZoom drive
mechanism
Fitting the lens
• Turn the lens release lever anti-clockwise to open the lock.
• Turn the zoom drive mechanism anti-clockwise to disengage the drive.
• Remove the rear lens cap from the lens.
• Insert the lens into the lens aperture, making sure that the two notches on the
lens engage with the locating tab inside the lens mount.
• Turn the lens release lever clockwise to lock the lens in place. When the lock is
fully closed, the lever should feel loose.
• Turn the zoom drive mechanism clockwise to engage the drive. 
						

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Digital Projection LIGHTNING 30sx+m, 40sx+m User Manual 2. Installation
Notes
For more information on using
the Lens shift feature, see
section 4. Using the menus,
Lens menu.
If the lens is to be shifted in two
directions combined, the
maximum range is somewhat
less, as can be seen below.
full horizontal and vertical shift
without distortion
combined shift without distortion
is reduced
Shifting the image
The normal position for the projector is at the centre of the screen. However, you
can set the projector above or below the centre, or to one side, and adjust the image
using the Lens shift feature to maintain a geometrically correct image.
•  Any single adjustment outside the ranges specified below may result in an
unacceptable level of distortion, paricularly at the corners of the image, due to
the image passing through the periphery of the lens optics.
•  If the lens is to be shifted in two directions combined, the maximum range
without distortion will be somewhat less, as can be seen in the diagrams to the
right.
The maximum range available with no distortion is dependent on which lens is used.
The tables below show the maximum range for images that fill the DMD. For images
which do not use the full height or width, extra shift will be possible, up to the limit of
the lens mount movement.
0.73 : 1 fixed lens107-141
1.21 : 1 fixed lenses107-142 and 107-143
zoom lenses107-144 to 107-147
vertical horizontal vertical horizontal
(pixels) (pixels) (vs DMD height) (vs DMD width)
± 120 ± 95 ± 0.11H ± 0.07W
vertical horizontal vertical horizontal
(pixels) (pixels) (vs DMD height) (vs DMD width)
± 525 ± 450 ± 0.5H ± 0.32W 
						

							page 2.12       105-681B January 2007
2. Installation Digital Projection LIGHTNING 30sx+m, 40sx+m User Manual
Notes
BEFORE INSTALLING THE
PROJECTOR, READ ALL THE
WARNINGS BELOW AND ALL
THOSE IN IMPORTANT
INFORMATION AT THE
FRONT OF THIS MANUAL.
The projector weighs over
100kg (200lbs). Use safe
handling techniques when
lifting the projector.
Make sure that the surface,
ceiling or rigging that is to
support the projector is
capable of supporting the
combined weight of the
projector and lens (see
specification for weights).
Backup safety chains or
wires should always be used.
Do not tilt the projector more
than  ±12° from side to side
when in use, as this may
cause serious lamp failure,
damage the lamp module and
cause extra cost on
replacement. The projector
my be tilted forwards and
backwards as necessary.
Centering
line
Frame
adjuster
±12°
360°
Mounting the projector
The projector is designed to be suspended from a lighting truss by its rigging frame.
However, the four adjustable feet under the chassis allow the projector to be
lowered onto a flat surface without any danger of hands being trapped between the
bottom frame and the surface.
Levelling
Before suspending the projector, make sure that the three frame adjusters are set
roughly midway.
Coarse frame adjustment
If the projector is to be suspended by its rigging frame, coarse adjustment of
projector level should be made by adjusting the length of the supporting wires or
chains, or by adjusting the position of the truss.
Fine frame adjustment
Once the initial coarse adjustment has been made, fine adjustment should be made
by turning the three frame adjusters on the rigging frame.
The frame adjusters will provide approximately ±10mm of movement relative to the
rear right corner. Centering lines are scribed on the shafts to show the centre of
adjustment.
Chassis adjustment
If the projector is to be operated from a flat surface such as a projector table, then
adjustment of projector level should be made by turning the four feet under the
chassis.