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HD9690 Series HDTV Graticule Generator Manual
4.8.
CONTROLLING THE ELLIPSE OBJECT
4.8.1. Turning the Ellipse Object On and Off
To select the ellipse object press the ELLIPSE button. The ellipse object will blink momentarily (if the
ellipse is On and the obj blink item on the setup menu is enabled) and the ELLIPSE button will blink
indicating that the object is selected. The on screen display will be automatically turned on if the OSD
TIMER item on the SETUP menu is not set to Off and will indicate it the ellipse object is On or Off. To turn
the ellipse On or Off, press the ELLIPSE button when it is blinking. The ellipse object will be automatically
de-selected after two minutes of inactivity on the front panel or when another object is selected. The
ELLIPSE button will be illuminated brightly when it is On but not selected. The ellipse line is shaped to
avoid sharp transitions in the video. Line width may be adjusted using the Line Width attribute. The
locations of the ellipse boundaries shown is the centre of the line.
4.8.2. Controlling the Aspect Ratio of the Ellipse
Auto Aspect ratio
Off
The AUTO ASPECT button is used to control the aspect ratio of the mask, the boxes and the ellipse
objects, and whether they are centred or not. The auto aspect ratio mode forces the ellipse object to be
centred and its size to follow a 1:1 aspect ratio. (The on screen display will show the aspect ratio as fixed
aspect and the centering as centred)
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. (The on screen display will show the aspect ratio as user aspect and the
centering as not centred)
4.8.2.1.
Centering the Ellipse on the Raster
When auto aspect ratio mode is On the ellipse object will always be centred on the raster. (The on screen
display will show the object centering as centred) When auto aspect ratio mode is Off the SETUP menu
item force centre controls whether the ellipse will be centred or not (see section 4.2.6.) When the force
centre item is Off it is possible to independently position and size the ellipse, using the SIZE and POS
buttons and turning one of the shaft encoders as outlined in the following sections. (The on screen display
will show the centering as not centred)
4.8.2.2.
Controlling the Ellipse Colour
Press the COLOUR button to adjust the ellipse colour. The colour of the elipse object can be adjusted in
the range of "0" through "14", in single digit increments, using either shaft encoder. The colours that will
be displayed for each value are shown in Table 4-2.
4.8.3. Controlling the Ellipse Size
Press the SIZE button, when the ellipse its button is blinking, to adjust the ellipse size. The size of the
ellipse 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 ellipse size while the SIZE
button is brightly illuminated. The On screen display will show the mask size as pixels and lines and as a
percentage of its reference aperture. The size adjust function will be deselected after 3 minutes of panel
activity, or when another button is pressed.
Page 4-20
1:1
4:3
14:9
When the auto aspect ratio mode is set to Off the ellipse's
Revision 1.5
16:9
1.67
DESKTOP CONTROL PANEL OPERATION
1.85
2.35
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