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HD9690 Series HDTV Graticule Generator Manual
3.8.
CONTROLLING THE ELLIPSE OBJECT
3.8.1. Turning the Ellipse Object On and Off
To select the ellipse object press the ELLIPSE button. A dashed line at the edge of the ellipse object will
blink momentarily (if the ellipse is On and the obj blink item on the Setup menu is enabled) and the LED
above the ELLIPSE button will come on indicating that the ellipse 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 object Off or On, press the ON/OFF button
when the LED is illuminated. 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.
3.8.2. Controlling the Ellipse Modes
When the ellipse object is selected, the MODE button is used to control its modes, such as aspect ratio,
and whether it is centred or not. Press the MODE button until the desired mode item is shown on the front
panel, along with the current setting. To select one of the other choices for that mode item, turn one of the
shaft encoders knobs. When you have chosen the desired setting for the mode item press the MODE
button again to save the new setting and view the next mode item. Continue pressing the MODE key until
you see the message Mode Select Off. The shaft encoders revert to controlling the selected control
for the ellipse that is also shown on the ctrl line of the OSD.
3.8.2.1.
Controlling the Aspect Ratio of the Ellipse
Aspect ratio
Off
This item is used to control whether the ellipse object shape is constrained to a specific aspect ratio, or
whether its horizontal and vertical dimensions can be independently controlled.
Select Off to allow the ellipse object's horizontal and vertical dimensions to be independently controlled.
The OSD will show the actual aspect ratio of the ellipse on the user aspect line.
Select one of the specific aspect ratios to constrain the horizontal and vertical dimensions so that the
aspect ratio of the ellipse object is maintained. The OSD will show the specified aspect ratio of the ellipse
on the fixed aspect line.
3.8.2.2.
Centering the Ellipse on the Raster
Centre:
H + V
This item is used to control whether the ellipse object is centred on the raster or not. The centre item is
only available when the SETUP menu item force centre is set to off.
Select yes to force the ellipse object to be centred on the raster. The OSD will show centred.
Select off to allow the ellipse object to be moved off centre. The OSD will show not centred. In this
MODE it is possible to independently position each line on the ellipse, or to position and size the whole
ellipse, depending on the settings of the aspect ratio MODE item and what CTRL SEL item is chosen.
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