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ViewMAX – High Performance Down Converter
Manual # 26-6090901-00 / Revision D
Genlock Phase Adjustments
This command is used to get or set the GenLock horizontal and/or sub-carrier phase. If [<type>=<value>] is specified,
the selected phase adjustment will be made. Note that this command is only valid when the output is GenLocked to
the main board GenLock input.
GLPHASE
[<type>
=
<
value
>] [<type>
=
<
value
>]
where
Type Value
H
– Horizontal phase
Value is in terms of ½ pixel; ranges from –400 to 270. To advance
the horizontal phase, value must be > 0. To delay, value must be <
0. The time of ½ pixel is 37.037 nSec.
C
– Sub-carrier Phase
Value is in multiple of 1.41 degrees; ranges from 0 to 255
(equivalently, 0 to 360 degrees).
Background Video Source Selection
This command is used to get or set the background video source. This selection only affects the Window, FG, or BG
GLCKMIX mode. Please also note that this command is only available if the Advanced Option Board is installed.
BGSRC
[
n
]
where
[n]
0
– D1
1
– Composite
2
– SVideo
3
– YUV
4
– RGB
5
– RGB + SYNC
Cursor Control
This command is used to get/set the current cursor control. If enabled, a cross-shape cursor will appear on the output
screen at the last known location (default is center). This control is mainly used for selecting a pixel color at a
particular location for chroma keying purposes. See CURSORLOC, KEYYCC, KEYRGB, and KEYCOLOR. Please
note that the cursor will be turned off automatically when any commands other than CURSOR and CURSORLOC are
received.
CURSOR
[
n
]
where
[n]
1
– turn cursor on
0
– turn cursor off
Cursor Location Control / Pixel Color
This command moves the cursor to the specified location and gives the pixel’s YCbCr and RGB color. The X and Y
positions are relative to the start of the active region. The upper left corner is the (0, 0) position. If no parameters are
specified, the current cursor location along with its pixel color in YCbCr and RGB formats will be displayed. Also, if
the cursor is currently off, it will automatically turns it on.
CURSORLOC
[xPos] [yPos]
The given YCbCr and RGB values returned by this command can be used as parameters to the KEYYCC, KEYRGB,
and KEYCOLOR commands to perform foreground and background keying.
Chroma Key Color
There are three different flavors of this command to set the chroma key color for foreground and background keying.
KEYYCC
<Y> <Cb> <Cr>
sets the chroma key color in YCbCr format using default cube size and transition size. Y ranges from 16 to 235. Cb
and Cr can range from 16 to 240.
KEYRGB <R> <G> <B>
