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HD9690 Series HDTV Graticule Generator Manual
3.5.1. Turning the Mask Object On and Off
To select the mask object press the MASK button. A dashed line at the edge of the mask object will blink
momentarily (if the mask is On and the obj blink item on the Setup menu is enabled) and the LED above
the MASK button will come on indicating that the mask 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
mask object is On or Off.To turn the mask object Off or On, press the ON/OFF button when the LED is
illuminated.
3.5.2. Controlling the Mask Modes
When the mask 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 attribute
for the mask that is also shown on the ctrl line of the OSD.
3.5.2.1.
Controlling the Aspect Ratio of the Mask
Aspect ratio
Off
This item is used to control whether the mask 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 mask object's horizontal and vertical dimensions to be independently controlled.
The OSD will show the actual aspect ratio of the mask on the user aspect line.
Select one of the specific aspect ratios to constrain the horizontal and vertical dimensions of the mask
object so that its aspect ratio is maintained. The setting of the Mask Apert item in the Setup menu control
the maximum horizontal or vertical size of the mask when one of the specific aspect ratios is selected.
The user is still able to adjust the size of the mask all the way out to the production aperture regardless of
the Mask Apert setting. The OSD will show the specified aspect ratio of the mask on the fixed aspect line.
3.5.2.2.
Centering the Mask on the Raster
Centre:
H + V
This item is used to control whether the mask 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 H + V to force the mask object to be centred on the raster. The OSD will show centred.
Select off to allow the mask object to be moved off centre. The OSD will show not centred. In this MODE
it is possible to independently position the top, bottom, left and right limits of the mask, or to size the whole
mask, depending on the settings of the aspect ratio MODE item and what CTRL SEL item is chosen.
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FRONT PANEL OPERATION
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