User Manual

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Slide Selection and Deletion
Click . The and buttons are displayed. You can select and delete a writing slide
as required. See the following figure.
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Click the slide: to select the current slide.
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Click : to select all slides.
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Click : to delete selected slides.
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Click : Buttons on the left are replaced with .
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Click : to close the Navigation page.
4.4 Signal Source
On the home page, click Sources. The signal source selection page is displayed. You can
preview the image of the corresponding signal channel, as shown in the following figure.
If the channel has no signal input, No Signal is prompted. You can click the selected signal
source to switch to the corresponding channel in full screen.