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OPEHATION
To modify decoder operation, select Decoder Options
from the Picture menu. From the Decoder Options
menu, select item 1 to set the decoding method to use
for the current source signal input to the decoder.
Select item 2 to set the routing of the current source
signal within the projector.
Video Standard
When item 1 is selected from the Decoder Options
menu, the Video Standard menu is displayed. It
contains up to eight video standard options: Auto-
detect, NTSC 3.58, NTSC 4.43, PAL, SECAM and,
depending on which version of the decoder is
installed, three more PAL options (see right). The
current option is indicated by a check mark. Auto-
detect is the default. When "Auto-detect" is selected,
the decoder automatically determines the video
standard of the input signal and processes it
accordingly. Alternatively, you can force the decoder
1./Auto
-detect
2.
NTSC
3.58
3.
NTsc
4.43
4.
PAL
5.
SECAM
6.
PALM
7.
PALN
8.
PAL 60
/
indicates
active
to
use a particular decoding method by selecting one of the other menu
options. This should only be necessary for poor quality input signals.
Signal Routing
When item 2 is selected from the Decoder Options
E@aam
menu, the Signal Routing menu is displayed. It
contains four signal routing options: Auto-detect, As
Composite, As S-Video, and As RGB. The current
selection is indicated by a check mark. Auto-detect is
the default. When "Auto-detect" is the selected
option, the projector determines whether the input
signal requires routing through the decoder according
to the type of interface used. For example, if the source
v
1
./Auto
-detect
2.
As Composite
3.
As S-Video
4.
As RGB
I
~
fndicates
active
is an RGB input
connected to the RGB interface, the signal will bypass the decoder since video
decoding is not required. However, if the input is a composite signal
connected to a composite/S-video interface, the projector will route the signal
through the decoder for processing.
If "As Composite" is the selected option, the projector assumes the input signal
is composite video and processes it through the decoder. If
"As S-Video" is the selected option, the projector expects the input signal in
the form of separate Y and C signals. If "As RGB" is the selected option, the
projector assumes the signal at the current input is always RGB and the
decoder is bypassed. One reason for not using Auto-detect is to allow
connection of a composite or S-Video signal to a standard RGB interface and
still have the projector process the input correctly through an installed decoder;
otherwise, a composite/S-video interface would be required. Figure 3-6
illustrates the connection of a composite or S-Video signal to an RGB input
(the projector's built-in RGB input is shown as an example).
3-20
.....-
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