Lightware UMX-OPT-TX150R - Priority Detect - S;PDIF, Embedded, Analog Audio 2

Page 38 / 107 Section 6. Operation of UMX-OPT-TX150R
6.7.4. Priority detect – S/PDIF, Embedded, Analog audio 2
After the video Autoselect the device checks the S/PDIF audio input. If there is a valid
S/PDIF audio signal on the S/PDIF audio input it will be selected. If there is no valid audio
signal on the S/PDIF audio input port the device checks the embedded audio input (DVI-
D embedded audio input to the DVI-D video input or HDMI embedded audio input to the
HDMI video input). If there is a valid embedded audio signal it will be selected. If there is
no valid embedded audio signal on the embedded input port the device selects the
analog audio 2 input, even if there is no audio signal on this input. Any audio event
occurs a new searching from the S/PDIF input port. The selected audio input will be
active until a new result of video Autoselect, an audio event or the device exits from the
Autoselect mode.
Figure 6-13. Priority (S-E-A2) audio selection flowchart
EVENT
S/PDIF
select
Embedded
select
Embedded?
S/PDIF?
Y
Y
N
N
Analog audio 2
select
Analog
audio 2?
Y
Result of VIDEO
autoselect