Digital Projection Lightning 35hd-T, 40hd-t User Manual

105-453B January 2007  Page 2.9
Digital Projection LIGHTNING 35HD-T, 40HD-T User Manual  2. Installation
Lens charts continued
4:3 full height image (TRF = 1.42)
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.
                               10                           20                            30                            40                metres...

Page 2.10  105-453B January 2007
2. Installation  Digital Projection LIGHTNING 35HD-T, 40HD-T User Manual
Lens charts continued
5:4 full height image (TRF = 1.52)
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.
Notes
  This chart has a TRF of 1.52, 
for use with the following 
images:
1350 x 1080 
pixels
                               10                           20...

105-453B January 2007  Page 2.11
Digital Projection LIGHTNING 35HD-T, 40HD-T User Manual  2. Installation
Lens charts continued
5:4 un-resized image (TRF = 1.6)
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.
Notes
  This chart has a TRF of 1.6, for 
use with the following images:
1280 x 1024 
pixels
                               10                           20...

Page 2.12  105-453B January 2007
2. Installation  Digital Projection LIGHTNING 35HD-T, 40HD-T User Manual
Lens charts continued
4:3 un-resized image (TRF = 2.0)
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.
Notes
  This chart has a TRF of 2.0, for 
use with the following images:
1024 x 768 
pixels
                               10                           20...

105-453B January 2007  Page 2.13
Digital Projection LIGHTNING 35HD-T, 40HD-T User Manual  2. Installation
Notes
  The Throw ratio for a particular 
lens is fi xed, but assumes that 
the image fi lls the width of the 
DMD.
  For images that do not fi ll 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:
1.0: 1 fi xed lens   103-350
1.25 - 1.45: 1...

Page 2.14  105-453B January 2007
2. Installation  Digital Projection LIGHTNING 35HD-T, 40HD-T User Manual
Notes
  The Throw ratio for a particular 
lens is fi xed, but assumes that 
the image fi lls the width of the 
DMD.
  For images that do not fi ll 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 
infi nity, and fully extended. 
At other focus...

105-453B January 2007  Page 2.15
Digital Projection LIGHTNING 35HD-T, 40HD-T User Manual  2. Installation
Notes
 Each time a new lens is 
fi tted to the projector, the 
calibration procedure must 
be carried out. See Lens 
menu, in Section 4. Using the 
menus.
  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...

Page 2.16  105-453B January 2007
2. Installation  Digital Projection LIGHTNING 35HD-T, 40HD-T User Manual
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
total lens mount shift available
in pixels and vs DMD size
Shifting the...

105-453B January 2007  Page 2.17
Digital Projection LIGHTNING 35HD-T, 40HD-T User Manual  2. Installation
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...

Page 2.18  105-453B January 2007
2. Installation  Digital Projection LIGHTNING 35HD-T, 40HD-T User Manual
Notes
 When stacking projectors, 
the stack MUST be vertical, 
to ensure that the stresses 
are distributed to all for frame 
couplings.
 Make sure that the surface, 
ceiling or rigging that is 
to support the projector is 
capable of supporting the 
combined weight of all the 
projectors and lenses (see 
specifi cation for weights).
 Do not place heavy objects 
on top of the projector 
chassis. Only...