HD9690 Series HDTV Graticule Generator Manual
FRONT PANEL
OPERATION
Revision 1.5
Page 3-15
3.4.3.3.
Controlling the Grid Size (Grid Centred)
Setup menu
Force centre
no
or
Setup menu
Force centre
yes
Mode menu
Centre
H + V
Size
When the
grid
is centred, the left shaft encoder is used to adjust the height and the right shaft
encoder is used to adjust the width of the
grid
about the centre of the raster.
3.4.3.4.
Controlling the Grid Size and Position (Grid not centred)
Setup menu
Force centre
no
Mode menu
Centre
off
When the
grid
centering is Off the H and V lines can be positioned independently in one of four modes.
V track
The left shaft encoder is used to adjust the vertical position of the
grid
, i.e. move the
grid
up or
down and the right shaft encoder is used to adjust the height of the
grid
.
V no track
The left shaft encoder is used to adjust the top of the
grid
and the right shaft encoder is used to
adjust the bottom of the
grid
.
H track
The left shaft encoder is used to adjust the horizontal position of the
grid
, i.e. move the
grid
left
or right and the right shaft encoder is used to adjust the width of the
grid
.
H no track
The left shaft encoder is used to adjust the left side of the
grid
and the right shaft encoder is
used to adjust the right side of the
grid
.
3.5.
CONTROLLING THE MASK OBJECT
The
mask
object consists of a horizontal masked area at the top and bottom of the raster, and a vertical
masked area at the left and right side of the raster. Throughout the remainder of section 3.4.3.3 the
mask
dimensions refer to the boundaries between the masked and unmasked area as shown in Figure 3-5. The
left side of the mask is the first unmasked pixel, the right side is the last unmasked pixel. The top of the
mask is the first unmasked line and the bottom of the mask is the last unmasked line. The horizontal
transitions from mask to image are shaped as shown in Figure 3-5. The vertical transitions from mask to
image are hard transitions.
Mask Width
Mask Left is first
unmasked pixel
Mask Right is last
unmasked pixel
Unmasked image
Figure 3-5: Mask Position and Size