Extron Electronics VN-Matrix 250 User Guide - Manual (Page 126)

Cause Check
Power Save mode is
enabled. The decoder display enters power save mode if the stream assigned for decoding is
no longer available and the power save mode is enabled in the decoder front panel
Output Sub-menu (see page 106) .
No stream is assigned. Check that a video stream has been selected (see Assigning a video source
stream on page 59).
The Encoder is not
correctly configured. Check that the encoder has a compatible video source, that the correct input is
selected, and that the HDCP settings are configured correctly. Refer to
Encoder —
Input Signal (Video) Issues on page 118.
More than four
decoders connected in
RTP unicast mode. A maximum of four streams are supported from each encoder when the transport
is RTP unicast. No image is decoded for additional connections to more than 4
decoders. See
Unicast RTP — An Overview (page 5)
Program Audio Problems
Cause Check
Audio input not
selected. The encoder program audio source is selected in the web UI (see Audio Input
Selection on page 54). Check to ensure that the correct input setting is selected.
Analog audio input level
is not set correctly on
the encoder. The analog program audio input level is adjusted on the encoder (see Configure
(AudioPort0) Tab on page 53). An incorrect setting may result in overloading of the
input or audio that is low in volume.
NOTE: HDMI audio level cannot be adjusted.
HDMI audio format is
not supported. VNM 250 devices support 24‑bit stereo PCM and AC‑3 (Dolby 5.1) digital audio
formats. Check the
Audio status field to ensure that the digital audio is supported
(see page 53).
No audio stream has
been assigned on the
decoder. Check that the audio stream is selected on the decoder (see Assigning an audio
source stream on page 60).
The program audio
output has not been
selected on the
decoder. The program audio can be output on either or both of the HDMI or analog outputs.
Check that the required output is selected on the decoder (see
Audio output
selection on page 63).
The analog program
audio output is muted
on the decoder. Ensure the Mute check box is not selected (see Audio output selection on
page 63).
The analog audio
output level is
incorrectly set on the
decoder. Check the correct value has been entered in the Analog Output Level text box (see
Audio output selection on page 63).
VNM 250 • Troubleshooting 120