Downstream Keys - Datavideo TVS-1200A Instruction Manual

5.3.3 Downstream Keys

Next to the 10-input main switcher is the downstream key (DSK) block. It can be used to add
images or text to the broadcast signal. DSK signal may come from any virtual player that
displays media (1 or 2), bitmaps (1 or 2), or text (1 or 2). It may also come from the camera
inputs. For the DSK function to operate properly, the media provided to DSK must contain
transparent areas. In this way, they will be overlaid on the main signal. Media without
transparent areas is not recommended to be used in DSK as they would completely cover the
broadcast image with their contents.
There are two DSK keys available for the user. Follow the following procedure to display DSK
on the Program view:
 Switch on one of the DSK buttons;
 DSK button is illuminated in green;
 Select the source from the list below;
 The text is ready to be broadcasted;
 The text preview is shown in PREVIEW;
 The Placement button can optionally be used for changing the size or position of the
text on the Preview screen (Note: change of the text position is impossible if the text is
already on air);
 The text can be put on air gradually (using the Fade button) or abruptly (using the Cut
button) and disappears from the Preview Screen;
 The operation of the Fade and Cut buttons is independent of the Production Switcher
TAKE button;
 If the text is on air, the colour of the DSK button changes to red;
 To remove the text from the air, click on the Fade or Cut button once again;
 When the text is taken off air, the DSK button colour returns to green and the text will
now appear in PREVIEW screen again.

Text 1

Text 2

Media 1

Media 2

Still 1

Still 2

Camera 1

Camera 2
To configure position and size of the downstream key, click on the placement button to open
the window shown below.
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