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5. Device Concept
The output audio ports are:
▪
HDMI out and TPS out (embedded audio): This is the embedded audio of the incoming video signal.
AUX analog audio I/O (configured as output): This port can be input or output, depending on the
▪
configuration. In case of output, the audio will be de-embedded from the HDMI stream of the port
besides (HDMI In 5 or HDMI In 6).
▪
Advanced audio output (AUX analog audio out): It contains three types of audio signal (see the picture above).
De-embedded audio from one of the incoming video (1x), the advanced analog audio (1x) and the
microphone (1x).
5.4.3. MMX8x8-HDMI-4K-A and MMX8x8-HDMI-4K-A-USB20
This model can receive audio from the sources below:
▪
HDMI in (embedded audio),
▪
AUX analog audio I/O (configured as input): This port can be input or output, depending on the
configuration. In case of input, the audio will be embedded into the HDMI stream of the port besides
(HDMI In 2, 4, 6, 8 and HDMI Out 2, 4).The output audio ports are:
▪
HDMI out (embedded audio): This is the embedded audio of the incoming video signal.
▪
AUX analog audio I/O (configured as output): This port can be input or output, depending on the
configuration. In case of output, the audio will be de-embedded from the HDMI stream of the port
besides (HDMI In 2, 4, 6, 8 and HDMI Out 2,4).
5.4.4. General Audio Settings from Inputs to Outputs
The list below contains the main settings of the audio signal from the source to the destination ports in
different cases. These properties can be set in Lightware Device Controller (LDC) software or with LW3
protocol commands.
5.4.4.1. HDMI IN HDMI OUT
In the first example, the embedded audio of the HDMI signal is transmitted from HDMI in to HDMI out.
Crosspoint state: Switch the desired video input to the desired output. For more details, see
Operations
in LDC chapter, for LW3 command see
Port status: Unmute the necessary video port. For more details, see
TPS Output Port Properties
in LDC chapter, for LW3 command see
Status of Destination Port
section.
Crosspoint
Switching and Crosspoint Settings
section.
HDMI Input Port Properties
and
HDMI and
Query the Status of Source Port
and
Query the
Applied firmware package: v1.2.2b5 | LDC software: v2.2.1
MMX8x4-HT series – User's Manual
Input port properties: Set the Audio mode to HDMI audio passthrough.
This setting can be found only in I5 and I6 ports of MMX8x4-HT420M model and I2, I4, I6, I8, O2, O4 ports of
MMX8x8-HDMI-4K-A and MMX8x8-HDMI-4K-A-USB20 models.
HDMI audio passthrough is the default audio mode and this property can not be changed in the other ports.
5.4.4.2. AUX Analog Audio I/O HDMI OUT
In MMX8x4-HT420M and MMX8x8-HDMI-4K-A models
Crosspoint state: AUX analog audio I/O belongs to the HDMI port beside. To transmit the audio signal set the
appropriate video input and output in the video crosspoint. For more details, see
LDC chapter, for LW3 command see
Port status: Check the mute state of the necessary video ports. For more information see
Properties
and
HDMI and TPS Output Port Properties
of Source Port
and
Query the Status of Destination Port
Input port properties: Set the Audio mode to Embed from aux audio, then additional analog audio input settings
becomes available. Take care of the proper mute state, volume and gain values. For LW3 command see
Analog Audio I/O Port Settings
INFO: Valid video signal is needed for audio transmission, too. The original audio of the HDMI will replaced
with the analog audio.
5.4.4.3. HDMI IN AUX Analog Audio I/O
In MMX8x4-HT420M and MMX8x8-HDMI-4K-A models
The de-embed audio of the HDMI signal can be transmitted to the AUX
analog audio I/O port, which placed beside the HDMI port. No crosspoint
setting required.
Port status: Check the mute state of the necessary video port. For more
details, see the
HDMI Input Port Properties
command see
Query the Status of Source Port
Input port properties: Set the Audio mode to Deembed to aux audio, then additional analog audio input settings
becomes available. Take care of the proper mute state and volume value.
Switching and Crosspoint Settings
section.
in LDC chapter, for LW3 command see
section.
section.
in LDC chapter, for LW3
section.
42
Crosspoint Operations
in
HDMI Input Port
Query the Status
AUX
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