pluge 1
From the
test-patterns
menu press
2
to select
black level (PLUGE)
.
Press
1
to select
PLUGE 1
. The
PLUGE 1
signal will look like this
with black level (brightness) set too high.
Turn the brightness
(1)
up until you can clearly see the PLUGE bar.
Then turn the brightness down slowly until the PLUGE bar just
disappears in the dark background
(2)
. Don’t turn the brightness
down too much, you should always see the grey bar to the right
of the PLUGE bar
(3)
. Press
return
to go back to the
test-patterns:
black level
menu.
38
test patterns
1. If you intend to play both PAL and NTSC then you need to make sure you have
set the
NTSC black level (IRE)
(->
setup
->
change setup
->
video
->
NTSC black level
(IRE)
) correctly before you carry out this adjustment as both are interrelated. This
will make sure that the black level is maintained when switching between PAL
and NTSC
2. Black is the absence of light. You will only achieve a ‘deep’ black if you prevent
additional light from hitting your screen
3. Some projectors, for example LCD and DLP types, cannot achieve real black (the
absence of light) because of their internal construction. You can easily test this
by standing between the projector and the screen when displaying the PLUGE 1
test pattern. If you can see your shadow on the black background (assuming
there is total darkness in the room) then the projector still outputs light whilst
trying to produce black. This is characteristic for these projector types and not a
fault
black
PLUGE
dark
grey
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