C2-3300 S
ERIES
O
PERATION
M
ANUAL
88
10% to 20% overlap are usually around 180%. In other words, not quite 2x
zooming (since that would give no overlap at all).
Figure ‘a’ shows the original image and ‘b’ shows the two zoomed images. Note
that the two images are at different ‘Pan’ positions – i.e. they are zoomed into
different areas of the image – the left and right-hand sides. Figure ‘c’ then shows
the images re-combined as they should eventually appear on your projection
screen.
To produce the above effect, you’ll now need to change some settings on the units:
1. On a dual-channel unit, set the unit into ‘Independent’ mode – this runs both
scaling engines independently as 1A and 2B.
2. Go into the ‘Adjust outputs’ menu and ensure that both scaling engines are
outputting the same resolutions. (Hint: use Toggle 1 / 2 (Shift-1) to switch
between 1A and 2B on the C2-7000 series.)
3. Go into the ‘Adjust windows’ menu and ensure that both scalers are set to
the same ‘Source’, which needs to be your original video signal (e.g. from a
DVD player).
4. For Output 1 (1A), change the ‘Zoom’ value to 190%, with H pan% of 0%
(fully left).
5. For Output 2 (2B), change the ‘Zoom’ value to 190%, with H pan% of 100%
(fully right).
If your projectors are properly setup and connected, with the scaler active with the
above settings, you should now have a very rough overlap of the two images on a
single projection screen. Where they do overlap you will see an over-bright part of
the image, and most probably some overlapping errors.
12.6
Edge-blending activation
Edge blending is activated in the ‘Adjust keyers’ part of the menu, as follows:
1. Go into the ‘Adjust keyers’ menu.
2. For Output 1 (1A), change ‘Edge blend’ from ‘None’ to ‘R’ – so that it’s right-
hand edge is blended.
3. For Output 2 (2B), change ‘Edge blend’ from ‘None’ to ‘L’ – so that it’s left-
hand edge is blended.
You will also notice that some red and green lines have appeared. The red lines
indicate the edge of the screen, and the green lines indicate the start or end of the
blend. If these lines are not present, change ‘E.blend guides’ to ‘Auto’ or ‘On’.
‘Auto’ makes them appear only whilst you are in the ‘Adjust keyers’ menu. ‘On’
forces them to be on all the time.
12.7
Edge-blending overlap / size
The blend size needs to be the same on both keyers, and is related to both the
output resolution (‘Output res’ in ‘Adjust outputs’) and the zoom value (‘Zoom’ in
‘Adjust windows’).
