Product Manual – DOC. 8425B DM-NVX-E30(C)/DM-NVX-D30(C)/DM-NVX-D80-IOAV
31
DM NVX Encoder/Decoder Troubleshooting (Continued)
The analog audio output is not
functioning.
(Applicable to compatible
DM-NVX-35x[C]
encoders/decoders only) The
analog audio mode is set to insert
audio.
Set the analog audio mode to extract
audio.
(Applicable to compatible
DM-NVX-35x[C] encoders only)
An incorrect audio source is
selected.
Set the audio source to analog audio.
The audio is multichannel
on a DM-NVX-E30 or
DM-NVX-E30C, which do not
downmix a 2-channel signal from
a multichannel surround sound
source.
Switch the audio input to
2-channel audio.
The video flickers or drops when
the DM NVX device is touched or
when metal in the vicinity of the
device is touched.
The DM NVX device is not
properly grounded.
Properly ground the DM NVX device.
The DM NVX device indicates that
the stream has started, but video
is not being displayed.
Neither IGMPv2 nor IGMPv3 is
enabled in the IGMP snooping
configuration.
Ensure that IGMPv2 or IGMPv3 is
enabled on the network switch.
Video is flickering or video is not
displayed when multiple DM NVX
devices connect to a network
switch.
Neither IGMPv2 nor IGMPv3
snooping is enabled in the network
switch for the
associated port or VLAN.
Enable IGMPv2 or IGMPv3 snooping in
the correct VLAN.
Video is flickering when multiple
DM NVX transmitters connect to
a network switch.
The IGMP filter is not set to drop
an unknown multicast IP address.
Configure the network switch to drop
the unknown multicast IP address.
A DM NVX multicast stream
stopped.
The multicast address is not set
properly on the DM NVX device
Ensure that the multicast address is
not a duplicate of a multicast address
that is set on another
DM NVX device. Use a valid multicast
address on the DM NVX device.
DM NVX streaming video is not
seen in the receiver.
The DM NVX receiver is not
configured with the correct
streaming URL and multicast
IP address.
Configure the DM NVX receiver using
the correct streaming URL and
multicast IP address.
Video stops suddenly, and the
IGMP reports disappear in the
network switch.
The IGMP querier is not
configured correctly.
Configure the IGMP querier correctly.
The recommended setting is the
default setting of the network switch.
If, for any reason, the factory default settings of a DM NVX device must be restored,
do one of the following:
• On the Device page of the web interface, click the Restore button.
• From the Tools menu in the Crestron Toolbox software, select Text Console and
issue the restore command.
• Power cycle the device 10 times. After the tenth power cycle, wait until the device
boots and then press the SETUP button for 5 seconds.
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