Extron Electronics IN1408 - Manual (Page 35)

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IN1408 Operation Manual - V1.4 3/21/02 12:32 PM © 2002 - INLINE, Inc.
Active Area Adjustment
In Figure 3, the active area is adjusted incorrectly, as shown by the dashed lines. If the active pixels
are set less than the actual active pixels, the IN1408 will only look for the active area inside this
smaller region. This results in an active area containing fewer pixels than are really present. This
gives the apparent effect that the picture is stretched horizontally. Similarly, if the active lines are set
less than the actual active lines, the IN1408 will again only look for the active area inside the smaller
region. This results in an active area containing fewer lines than are really present. This gives the
apparent effect that the image is stretched vertically.
Blanking
Active Area
Active Pixels
A
c
tiv
e
Li
ne
s
Incorrect Active Area
Figure 3. Incorrect Active Area
Depending on the RGB source, the following input modes may have the same horizontal scan rate and
vertical refresh rate. The differences between these input modes will not be detected. The input aspect
ratio will automatically be maintained at the output by inserting blank borders around the image.
However, if you want to fill the entire monitor, the input aspect ratio may be set by adjusting the active
pixels or active lines, according to the input mode. This will stretch the image to fill the entire monitor.
The total pixels may also be adjusted to match the input mode as shown in the table below: