HD9690 Series HDTV Graticule Generator Manual
Page 3-16
Revision 1.5
FRONT PANEL
OPERATION
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
1:1
4:3
14:9
16:9
1.67:1
1.85:1
2.35:1
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
Off
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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