Gefen EXT-HD-SL-444 User Manual page 27

Operating the 4x4 Seamless Matrix for HDMI
1. Press the button of the desired output to be masked. For this example, we will select
Output 3:
Mask button
2. Press the Mask button.
3. Both the selected output and the "M" LED indicator will be illuminated on the front
panel of the matrix.
Output 3 is selected
4. To unmask an output, press the button for the output and then select the desired input.
See Routing Inputs to Outputs
Using the IR Remote Control
Output 3 is masked
for more information.
page | 17
Routing Basics
Press Out 3