RXC-3000
Hardware Installation and User Guide
9000-0000-040 Revision 10
36 of 46
Genave Electronics
MP3 Audio Player
How Sound Files Are Played To The PA Port
When the RXC-3000 runs a script, if it has been told to play a song/sound file, it turns on the MP3
player and tells the player the file number of the song/sound it is to play. The player automatically
selects the file from the SD card and begins playing. At the same time, the RXC-3000 un-mutes the
corresponding audio amplifiers and the external PA amplifier circuits.
How The RXC-3000 Knows What Audio File To Play
Each MP3 sound file on the SD card must have a specific name that begins with 3 numbers (from
001
to
098
) followed by a hyphen (example
048
- ). The number must include leading zeros and the file
name must end in .mp3
Any characters after the hyphen are ignored by the RXC-3000 and are only there to help the
programmer identify the files.
NOTE 1:
The very first audio file (000-.mp3) is
never
used since “PLAY=000” is the code that
instructs the RXC to stop playing audio. The file 000-.mp3 is simply a place holder on the SD card but
it has to be there for the player to function correctly.
NOTE 2:
All MP3 files must be located at the Root directory and not within file folders.
NOTE 3:
Do not use the characters
!@#$%^&*(){}[]:;"<>?'~`+=/
in the file name
Here are how the files on the memory SD card appear to the RXC-3000:
001-Alert_msg_one.mp3
Audio #1
(first useable file)
002-Wail_Siren.MP3
Audio #2
003-Steady.Mp3
Audio #3
007-Longer_File_Name.mp3
Audio #7
(gaps in the numbering sequence are ok)
035-HeresAnotherSound.MP3
Audio #35
020-emergAlert.mp3
Audio #20
(files can be out of number sequence order)
057-UpperandLowerCase.Mp3
Audio #57
(UPPER, lower or MiXeD case is ok)
When triggered by the RXC-3000, the MP3 module only looks for files which end in “.mp3”. Then, it
looks at the
first four
characters of each file until it finds a match to its search.
