AMX Enova DGX 100 Series Hardware Reference Manual page 92

Audio Troubleshooting (Cont.)
Problem
f. INPUT SIDE ISSUE - due to Solecis
Transmitter source audio port settings.
g. INPUT SIDE ISSUE - due to the input
channel's Audio Configuration settings.
h. INPUT SIDE ISSUE - due to carrier video
signal having insufficient space for audio
signal.
A signal containing both video and
audio must have space for both signal
portions. The audio signal portion lies in
the blanked portion of the video signal.
High Bit Rate Audio (HBRA) requires a
larger than normal space in the blanked
area of the signal. Video formats with
reduced blanking normally provide
enough space for audio signals.
In a signal that combines a video format
with reduced blanking and HBRA, the
HBRA signal is truncated and can
present as either no audio or as
problematic audio. While Enova DGX
hardware supports both HBRA and
reduced blanking video formats, these
formats do not necessarily work with one
another.
i. OUTPUT SIDE ISSUE - due to DVI output
device.
j. OUTPUT SIDE ISSUE - Audio is not present
on 2-channel sink (TV/monitor) with
good video while it is present on a multi-
channel sink (AVR or TV/monitor that
supports multi-channel audio formats).
Most likely due to source's use of non-
PCM source audio format with a DxLink
Receiver analog output port's PCM 2-
channel requirement.
k. OUTPUT SIDE ISSUE - Audio is not
present on DxLink Receiver (DX-RX, DX-
RX-4k) analog output port with good
video due to source's use of non-PCM
source audio format with a DxLink
Receiver analog output port's PCM 2-
channel requirement.
l. OUTPUT SIDE ISSUE - Audio is not present
on ASB analog output channel or ASB-D
Dante channel with good video due to
source's use of non-PCM source audio
format with an switched audio sub-
system PCM 2-channel requirement.
Enova Digital Media Switchers - Hardware Reference Manual
System Type Solution
1. Verify the transmitter audio setting by using NetLinx Studio
to send the following commands:
?AUDOUT_ASSIGN
2. If the port number is not the one you expect, and:
a. you wish to use the same audio input port as the video,
then from the System Configuration Interface Configuration
Any using Solecis 5x1 Multi-
page, select the Input port and on the SDX-514-DX 4K Digital
Format Transmitter (SDX-514M-
Switcher sub-section select the source you desire.
DX/SDX-501M-DX)
b. you wish to use the analog Audio Input port with HDMI
video, then use NetLinx Studio to send the audio switch
command for the port you need, e.g. AI3O1 will send analog
audio input port 3 to the Solecis output port.
3. If you are still no getting audio, then look at one of the other
Audio is not present with good video options in this table.
1. Select the input channel source the output channel(s) with
no audio and the select the Audio configuration tab.
2. Verify that Input Gain is not set too low. Note its current
All
setting and slide it to right to 24. If you don't get any audio,
you can return it to its prior setting. If you do, then adjust it to a
new desired setting.
Change either the audio format to non-HBRA or change the
video format to a format that does not use reduced blanking.
Note: HBRA is only supported on CEA formats.
All
These changes can be carried out directly on the source
device (see source manual) or by manipulating the EDID in
the input channel
Devices with EDIDs that report themselves as "do not support
audio" and the audio is therefore blocked from being sent to
All the device. See Verifying an output devices capabilities as
communicated by its EDID at end of table for more info on
how identify your devices audio capabilities.
See 1.c.
Any system without Audio
Switching Boards Note: You will essential need to reduce audio everywhere to
(ASB or ASB-DAN) 2-channel for that source.
See 1.c. if you do not have Audio Switching Boards (ASB or
ASB-DAN).
See 1.m. if you do have Audio Switching Boards (ASB or ASB-
Any using a DxLink Receiver's
DAN), you can use the audio Downmix channel to deliver
analog output port
audio to your 2-channel only output devices. See
Configuring/Switching the Down-mix Signal section on
page 188 for information on how to set up and route your
downmix channel.
If you have a system design that only supports 2-channel
audio on all of the system outputs, then see 1.c.
If you have ASB boards and a mixture of output devices,
Audio Switching Boards
some of which can handle compressed or multi-channel
(ASB or ASB-DAN)
audio, see Configuring/Switching the Down-mix
Signal section on page 188for information on how to set up
and route your down-mix channel to those devices that only
support 2-channel audio.
4K60 HDMI Input & Output Boards
92