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Models 9590 & HD9590 Graticule Generator Manual
4.5.2. Controlling the Aspect Ratio of the Mask
Auto Aspect ratio
Off
The AUTO ASPECT button is used to control the aspect ratio of the mask, the boxes and the circle
objects, and whether they are centred or not. The auto aspect ratio mode forces the mask object to be
centred and its size to follow one of the following fixed aspect ratios: 1:1, 4:3(1.33), 14:9 (1.55), 16:9
(1.78), 1.67, 1.85, 2.35. When the auto aspect ratio mode is set to Off the mask's dimensions are not
constrained to follow a fixed aspect ratio and the setup menu force centre item determines whether they
will be forced to the centre of the raster. See section 4.3.1 for more information about auto aspect ratio
mode.
4.5.2.1. Centring the Mask on the Raster
When auto aspect ratio mode is On the mask object will always be centred on the raster. When auto
aspect ratio mode is Off the SETUP menu item force centre controls whether the mask will be centred or
not (see section 4.2.9.) When the force centre item is Off it is possible to independently position and size
the mask, using the SIZE and POS buttons and turning one of the shaft encoders as outlined in the
following sections.
4.5.2.2. Controlling the Mask White Level
Press the LEVEL button to adjust the mask white level. The white level can be adjusted in the range of
"0" through "14", in single digit increments, using either shaft encoder with "0" corresponding to "black" and
"14" corresponding to "white".
4.5.3. Controlling the Mask Size
Press the SIZE button, when the mask button is blinking, to adjust the mask size. The size of the mask
can be adjusted in one of three modes, depending on the setting of the Setup menu Force Centre item
and the Auto aspect ratio mode. The remote panel display will show the mask size while the SIZE button
is brightly illuminated. The size adjust function will be deselected after 3 minutes of panel activity, or when
the another button is pressed.
4.5.3.1. Controlling the Mask Size (Objects centred, Aspect Ratio Off)
Setup menu
Auto Aspect ratio
When Force Centre is On and auto aspect ratio is Off, the left shaft encoder is used to adjust the height
and the right shaft encoder is used to adjust the width about the centre of the raster then the SIZE button
is selected.
Page 4-14
1:1
4:3
Force centre
Yes
Off
14:9
16:9
1.67
DESKTOP REMOTE OPERATION
1.85
2.35
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