MICROTRONIX DX-2200-SW-02, Руководство пользователя

Страница: 31 / 87

DX-2200
– Dual-view 2x1 SDI Video Switcher
Page 31 of 87
G
RAPHIC
F
IELDS
Graphic Fields are numbered 1 through 48. The Graphic Overlay Commands that
apply to a single field include the field number in the command, for example the
SnnS command enables display of field number nn.
For any command that uses a field number, the field can be specified as either a 1
or 2 digit number in the range 1 through 48.
Instead of specifying a single field, the commands can be applied to all fields on
the layer by specifying a field number of 0. For example G0S enables the display
all fields on the layer and is equivalent to the commands G1S, G2S, G3S… G48S.
Commands can be applied to a range of sequential fields using the syntax "f1-f2"
for the field number where f1 is the first field and f2 is the last field the command
applies to. For example the command G7-10S enables display of fields 7, 8, 9,
and 10.
By default, all Graphic Fields are turned off and have default parameters. To
display a field, the following steps are required:

the field must be configured with the required field type

the parameters must be set appropriately for the field type

display of the field must be enabled

the layer must be updated
Some commands combine the last two operations in the above list, for example
the S2S command enables the display of Graphic Field 2 and also updates the
layer.
The following commands are a simple example that displays a rectangle. These
commands are intended for use with the DX-2200 in the factory default
configuration:
S1M2
‘ Set Field 1 to be a Rectangle Field
S1PA100,100
‘ Coordinate A = (100,100)
S1PB300,300
‘ Coordinate B = (300,300)
S1S
‘ Enable display of Field 1 and update the layer
R
ESET
G
RAPHIC
F
IELD
A Graphic Field can be reset to its default values with the SnnZ command where
nn is the Graphic Field number to reset. The SZ command will reset all Graphic
Fields.
Resetting a Graphic Field will clear the Text string, set the line color to white with
full visibility, set the position to the top left corner, set the fill color to blue but fully
transparent (not visible), and set the font to the default for the current video
resolution. The overall visibility of the Field is set to off.
Resetting fields does not automatically update the video output of the overlay. Any
fields that are visible in the video are not cleared until a command is received that
causes the overlay to be updated.