Nautel NX25, Operation And Maintenance Manual

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NX300 Operations and Maintenance Manual Operating the transmitter
Page 2-122 Issue 3.0 2012-11-01
The playlist (or Icecast/Livewire stream) is typically used as an audio loss backup. For example, the
user may operate with Preset 1 using one of the standard audio sources. Preset 1 can be configured to
switch to another preset (e.g., Preset 2), which uses a playlist or stream, if Preset 1 loses its audio.
Playlist/stream presets can also be activated by the Scheduler (see "Preset Scheduler", on page 2-61 ).
Playlist
The
Playlist
tab (see Figure 2.95 ) displays the audio files and sequence that currently make up the
playlist. Only audio files that are supported (e.g., .wav or .mp3 files) will be played. For .mp3 files,
using files with bit rates equal to or greater than 96 kbps achieves best audio results. Also, you must
have the optional USB sound card installed and activate a preset that has
Audio Player/AES1 or AES2
selected in the
Analog Settings
->
AM Source
in the
Presets
page. There are three sections in the
Playlist tab - Playlists, Playlist Contents and Available Files on USB.
NOTE:
You should not change an active (playing) playlist nor should you attempt to delete or move a
song that is currently playing. To make changes to the playlist, the audio player must be off (inactive),
or at least not being used as the active preset’s source.
The
Playlists section
is used for adding (
Add
button) and deleting (
Delete
button) playlists.
The
Playlist Contents
section is used for inserting jumps (
Insert JMP
button) and deleting playlist
contents (
Delete
button). The
Insert JMP
button allows the user to set up a playlist that can jump to
an item in another playlist. You can drag files up and down the
Playlist Contents
list and you can
drag files from the
Available Files on USB
list to the
Playlist Contents
list.
The
Available Files on USB section
is used for adding audio files to the playlist (
Add Files
button)
or refeshing the available files list (
Refresh
button). Audio files must be stored on an external USB
device; they are not stored in the transmitter. Only the audio files stored in the root directory of the
most recently connected USB device appear on the playlist. The list will be empty if no USB device is
connected. The USB drive must be formatted with a FAT32 file system. Click the
Refresh
button to
force an update of the list of files on the mounted USB.
NOTE
: MPEG Layer-3 audio coding technology licensed from Fraunhofer IIS and Thomson.
The audio player supports only one USB device at a time. If multiple USB devices are connected,
only the most recently connected USB is recognized as the active USB drive. If multiple USB devices
are connected and one is removed, both devices are unmounted.
The
Manage Files
button, available on the remote AUI only, displays a pop-up window that allows
the user to
Browse
for files and
Upload
them to the USB or
Delete
them from the USB. You should
not delete files that are part of more than one playlist.