TV One C2-7000 Series, Руководство пользователя

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C2-7000 S
ERIES
O
PERATION
M
ANUAL
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12.10 Gamma correction
By now you should have two perfectly aligned projectors, but possibly with a
brighter than normal overlap. This is most probably because a projector’s
luminance is not perfectly linear and therefore will need to have what’s called
‘gamma correction’ applied.
Gamma correction is available within the same ‘Adjust keyers’ menu as the
other adjustments. You will need to adjust both output channels gamma
correction to be the same, unless you have non-matching projectors.
To change gamma correction:
1. Go into the ‘Adjust keyers’ menu.
2. For Output 1 (1A), change ‘E.blnd gamma’ (the first number) until the
brighter area starts to dim – note the number required for this.
3. For Output 2 (2B), change ‘E.blnd gamma’ (the first number) to the
same gamma value as per above.
4. Repeat steps 2 and 3, changing up or down as necessary until the
bright patch has disappeared.
Note that it may not be possible to completely remove a bright patch – this is
because some projectors can not actually output completely black images,
with some light always leaking through.
12.11 Aspect ratio adjustment
Since your original video source is probably 16:9 (or a similar aspect ratio), it
will also be necessary to change your vertical zoom value differently to the
horizontal one. This is best done after projector alignment by performing the
following:
1. Go to the ‘Adjust windows’ menu and change ‘Aspect adjust’ to
‘Advanced’. This enables separate H & V zoom adjustments.
2. Go to ‘Adjust windows’ for Output 1 (1A) and you will now be able to
adjust the vertical zoom independently of the horizontal zoom. H zoom
should be left as it is, so adjust the V zoom until the correct aspect ratio
of your output is achieved.
3. Go to ‘Adjust windows’ for Output 2 (2B) and adjust the V zoom to the
same value as Output 1 (1A).
Perfect
alignment – your
red and green
vertical lines
should overlap
to produce
yellow ones.
Y Y