Grass Valley 2090MDC - Manual (Page 22)

16 2090MDC Instruction Manual
2090MDC HDTV Monitoring Downconverter
In Zoom mode ( Figure 12 ), use the Zoom slider to set the zoom factor from
full letterbox (minimum) to full screen (maximum). Use the single (1X) or
double arrows (10X), then press the Apply button.
The Zoom magnitude has 35 possible values. To increment the Zoom by
one step will require up to eight clicks on the single arrow due to the
number of divisions of the bar display. Make the approximate number of
clicks before pressing the Apply button. One double arrow click will incre-
ment the Zoom by one step.
Use the Zoom Horizontal Pos. slider to move the display to the left and
right. Use the single (1X) or double arrows (10X), then press the Apply
button. (Note that in minimum full letterbox mode, the horizontal display
is not adjustable.)
Note that when using the single arrow, each step change (approximately
eight pixels in either direction) may require up to seven clicks of the single
arrow. This is due to the division of the bar display into 256 steps. Shifting
the display is a function of the maximum number of steps for the input
standard divided by 256. A larger number of clicks will be required when
the picture has been zoomed down to less than Full Screen size.
To determine exactly how many clicks will move the display one step if this
is required, refer to
Table 3 on page 9 . Make the approximate number of
clicks before pressing the Apply button. The returned bar position will be
an approximate (rounded off) value. The double arrows will increment the
display by approximately 10 times in the same manner.
Figure 12. Zoom Mode Display
Set Zoom factor with
slider (from letterbox
to full screen).
Set Zoom horizontal position
with slider (adjustable from greater
than full letterbox to full screen).