Top Offset

A value of 0 = the side opposite the scanner connectors (the top of the scanner). A value of 255 = the side with the connectors (the bottom of the scanner).

If Top Offset is greater than Bottom Offset, then Top defines the raster position in a straight line only. If Top is less than Bottom, then the raster will sweep back and forth between the Top and Bottom offsets if the sweep rate is greater than 0.

The Top Offset is considered the "home" position.