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Silicon Image, Inc.
Scan Plus v2 User Manual
13
the center of the screen (where the video is) at a different rate than on the edges (where the black
bars are). This would leave a visible dark area in the center when you return to widescreen mode.
Since nearly all televisions sold are CRT-based, it is likely that the gray bar setting is the safest for
your display. However, LCD and DLP-based projectors and displays do not suffer from burn-in
so it is safe to use the black bar setting.
Processing Mode Indicators
There are three LED indicators on the iScan Plus v2 front panel that roughly indicate which
processing mode is currently active.
The “Film” mode LED indicates that the iScan Plus v2 has recognized a 3:2 pulldown sequence
from a video sequence that was originally captured from film.
The next LED, “Graphics” indicates that iScan Plus v2 has determined that the input video was
generated at 30 frames per second. This is most commonly the case with material that was
created using computer graphics.
The leftmost LED is labeled “Video” but is more accurately thought of as “Video or Still.” This
indicator will light whenever the video is from a regular 60 field per second video camera or
when there is very little movement in the scene. This LED may also appear briefly during normal
processing of film sources.
When processing video from certain video game consoles or occasionally from other devices, you
may notice that all three mode indicators are lit. This indicates a fourth processing mode – single
field sources. In this mode, the iScan Plus v2 is optimizing its processing in order to create a high
quality output signal for these special signal types.
In order to avoid distracting you with random lights flashing, the iScan Plus v2 changes these
indicators much more slowly than the processing mode actually changes. For instance, even
though the iScan Plus v2 may be able to detect and switch modes dozens of times per second, the
indicators will change at most once every second or two.
Power Usage and Environmental Requirements
Your iScan Plus v2 is designed to operate in an ambient temperature environment of 0
o
C to 35
o
C
(32
o
F to 95
o
F). In normal operation at a room temperature of 25
o
C (77
o
F), the top of the unit will
be warm to the touch. This is completely normal and is due the fact that the iScan Plus v2 was
designed to use the enclosure as a heat dissipater in order to keep the components inside cooler.
As with most consumer electronics devices, we suggest that the iScan Plus v2 not be placed in a
small enclosure with no venting for heat to dissipate.
The iScan Plus v2 can be left plugged in and powered-up for years. The V2 has a low-power
(sleep) mode, which is activated when there are no video signals that are active at the input
connectors. This mode significantly reduces the power used by the iScan Plus v2. However, if
you prefer to have the iScan Plus v2 on a switched outlet, that is OK as well.