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Silicon Image, Inc.
Scan Plus v2 User Manual
6
Operation
The only switch on the iScan Plus v2 that is not typically limited to installation usage is the
“Aspect Ratio” switch. It is only required for widescreen televisions that have no aspect ratio
control when using the iScan Plus v2.
There are three positions on the Aspect Ratio switch: Normal, Squeeze (black) and Squeeze
(gray). The Normal setting will pass any video input through with no modifications to the aspect
ratio. The two squeeze settings will horizontally compress the video image so that it fits into a
smaller portion of the frame. This will allow a 4:3 aspect ratio image to be displayed in a 4:3
portion of a 16:9 screen. When squeezing the image, the iScan Plus v2 will put either black or
gray bars on the side of the video. To avoid burn-in, it is strongly recommended that gray bars be
used for all CRT-based, front and rear-screen projectors and normal tube-type televisions. LCD or
DLP-based displays can use the Squeeze (black) setting.
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.