JVC DLA-M4000LU User Manual
Page 9
No.51666
DLA-M4000LU
DLA-M4000LE
16
Installing the Projector (Cont.)
Lens Shift Function
Screen
Install the projector so the center of the projection
screen is the same height as the center of the lens.
Screen with 4 : 3 aspect ratio
■
Change of projection screen according
to aspect ratio
Screen with 16 : 9 aspect ratio
Center line of the lens
90°
90°
90°
CAUTIONS and NOTES
• When installing the screen, use a 4 : 3 aspect ratio picture.
(A 16 : 9 aspect ratio picture is projected based on the width of the range in which a 4 : 3 aspect ratio picture is projected.)
• The diagonal length of a 16 : 9 aspect ratio picture is about 91.8% that of a 4 : 3 aspect ratio picture. This value is a guide
and should be used as a reference.
• When projecting at the maximum projection distance, we recommend that the projector be used with the zoom on
the Tele (T).
• If sunlight or lamp light strikes the projection screen directly, the picture becomes whitish and dim. Be sure to use a
curtain, etc. to shield the light.
• Trapezoidal distortion may not be corrected.
Adjust the projector within the range of angle adjustment (up/down adjustment angle: +4°; horizontal adjustment angle:
±5°) so that it is set up level.
The separately sold lenses used on the projector have a lens shift function. With the lens used, you can adjust the projected
image vertically using the setting menu or the remote control’s SHIFT button U or D.
When using the projectors in a stack configuration (stacked one over another), make adjustment so that the picture of one
projector overlays exactly that of another using the lens shift function.
For detailed adjustment procedures, refer to “Operating the Setting Menu” (page 30) and “Controls and Features” (page 11).
For maximum amount of shift, refer to “Maximum Amount of Shift” (page 17).
(When the lens needs to be adjusted in horizontal angles, consult your dealer or service center.)
Note
• Some of the lenses (except GL-M4023SZ and GL-M4015S) to be introduced in the future may not feature the lens shift function.
Memo
Stack configuration:
Up to four projectors can be stacked and used together (stack configuration).
Using two or more projectors together, high image brightness can be attained. This allows you to project sufficiently bright image in a fairly large
auditorium or relatively bright place without using a heavy-duty projector.
CAUTION
To prevent damage to the projector during shipment, a shift center lock pin was used to fix the lens mechanism when the projector was shipped
out the factory. If you implement “SHIFT LENS” on the setting menu and the lens does not either move up or down, the shift center lock pin may
not have been removed. Consult your dealer or service center.
17
Installing the Projector (Cont.)
Lens Shift Function (Cont.)
Relational table for maximum shift amounts (aspect ratio 4 : 3)
Py(%)
Px(%)
Py(%)
Px(%)
Py(%)
Px(%)
Py(%)
Px(%)
Py(%)
Px(%)
0.000
31.968
10.000
28.102
20.000
23.272
30.000
17.268
40.000
9.739
1.000
31.621
11.000
27.666
21.000
22.729
31.000
16.592
41.000
8.881
2.000
31.265
12.000
27.219
22.000
22.173
32.000
15.900
42.000
8.000
3.000
30.901
13.000
26.762
23.000
21.606
33.000
15.192
43.000
7.096
4.000
30.528
14.000
26.295
24.000
21.026
34.000
14.467
44.000
6.167
5.000
30.146
15.000
25.818
25.000
20.434
35.000
13.725
45.000
5.213
6.000
29.756
16.000
25.331
26.000
19.828
36.000
12.966
46.000
4.231
7.000
29.356
17.000
24.833
27.000
19.209
37.000
12.189
47.000
3.221
8.000
28.948
18.000
24.324
28.000
18.577
38.000
11.392
48.000
2.180
9.000
28.530
19.000
23.803
29.000
17.930
39.000
10.576
49.000
1.107
50.000
0.000
Py(%)
Px(%)
Py(%)
Px(%)
Py(%)
Px(%)
Py(%)
Px(%)
0.000
31.968
10.000
26.609
20.000
19.421
30.000
9.747
1.000
31.503
11.000
25.980
21.000
18.581
31.000
8.599
2.000
31.234
12.000
25.333
22.000
17.716
32.000
7.410
3.000
31.528
13.000
24.666
23.000
16.824
33.000
6.178
4.000
30.018
14.000
23.980
24.000
15.905
34.000
4.900
5.000
29.491
15.000
23.274
25.000
14.958
35.000
3.573
6.000
28.949
16.000
22.548
26.000
13.981
36.000
2.193
7.000
28.389
17.000
21.800
27.000
12.973
37.000
0.756
8.000
27.813
18.000
21.030
28.000
11.933
37.509
0.001
9.000
27.220
19.000
20.237
29.000
10.858
Maximum amount of shift
The maximum amount of vertical shift is restricted by the amount
of horizontal shift made.
The amount of shift is defined as follows:
With the screen width taken as 1, horizontal shift is defined as a
ratio (%) of the screen width, while with the screen height taken
as 1, vertical shift is defined as a ratio (%) of the screen height.
Horizontal screen sized
(x): 100%
Vertical screen size
(y): 100%
Screen after shifted
Screen with zero (0) shift
Py(%)
Px
(%)
Relational table for maximum shift amounts (aspect ratio 16 : 9)