Aurora Design BTU-3.1 Mounting instructions

Aurora Design
BTU-3.1 Bluetooth/USB
AAC/MP3/Ogg/FLAC Adapter
User Operation
Manual
Congratulations on your new Aurora Design BTU-3.1 Bluetooth/USB
adapter. Combined with an FMR-3 converted radio, you can enjoy 21st
century technology in your classic vehicle!
Setup: Your radio may have come equipped with an internal
microphone. If not, before installing your radio back into your vehicle,
you may wish to plug the hands-free microphone or optional illuminated
pushbutton into the appropriate jacks on the radio. The microphone can be
placed in a convenient location in the vehicle, typically along the front
edge of the headliner near the rear view mirror or along the bottom edge of
the dashboard. The attached cable is 9.8’ (3M) long and can be routed as
required, typically behind the A pillar cover for headliner mounting.
Excess cable can be coiled and tied off.
The optional pushbutton assembly is not required when used with an
FMR-3 converted radio as the existing radio controls can be used to fully
operate the BTU-3.1. The pushbutton assembly can still be used with an
FMR-3 converted radio if desired, and must be used with all other
installations. The pushbutton requires a 1/2” (12.7mm) hole and should be
mounted somewhere convenient such as the bottom edge of the dashboard.
The pushbutton is illuminated with a red status LED that should be made
visible for easiest operation. The attached cable is 3.3’ (1M) long and can
be routed as required. Excess cable can be coiled and tied off.
Basic Operation: Operation of the BTU-3.1 is extremely simple yet
powerful. The BTU-3.1, when combined with an FMR-3 AM/FM receiver
form a fully integrated AM/FM/Bluetooth/USB AAC/MP3/OGG/FLAC
solution. Communication over a proprietary com-link keeps the two
modules in perfect sync. Full operation is provided by the existing controls
on the radio. When streaming music or handling a phone call, the FMR-3
status LED will change color to indicate Bluetooth/USB operation. (see
FMR-3 manual for more information on status LED) When you stop
streaming music or end a call, the BTU-3.1 will put the FMR-3 back into
normal operation. Everything is handled automatically.
The BTU-3.1 supports SBC and AAC formats over Bluetooth and AAC,
MP3, Ogg Vorbis and FLAC formats over USB. AAC files offer higher
quality than MP3 and is the native format used by iTunes® and many other
popular music services. AAC files will play natively off compatible Bluetooth
devices and can be copied directly onto USB drives for playback.
Since the BTU-3.1 contains both Bluetooth and USB interfaces, control
of the module, either through an FMR-3 or with the optional pushbutton/
seek-button, focuses on one interface at a time. Just as with a computer, the
application that currently has focus receives the inputs from the keyboard
and mouse, so do the Bluetooth and USB interfaces on the BTU-3.1. If only
one interface is active, for example Bluetooth connected and no USB drive
attached, the controls will affect the Bluetooth interface. Likewise if a USB
drive is attached and no Bluetooth device is connected, the controls will
affect the USB interface. In the case where both a Bluetooth device is
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connected and a USB drive is attached, the one that is currently active will
have focus from the controls. If neither interface is currently active, the
BTU-3.1 will focus control on the USB interface by default. In this case to
change focus to the Bluetooth device, momentarily remove the USB drive or
start playback using the menus on the Bluetooth device.
The BTU-3.1 will always return to the last mode it was in when the radio
was turned off assuming the Bluetooth or USB devices are still present. For
example, if the BTU-3.1 was playing back from the Bluetooth or USB when
the radio was powered off, it will return to playing back from where it left off
when the radio is turned back on. Additionally, if a USB drive is inserted after
the the radio is turned on, the BTU-3.1 will start playback of the USB drive
unless the Bluetooth interface is currently active.
The BTU-3.1 supports Enhanced Vo ice Assi s t HD which will clearly
speak messages to you to assist in the operation of the radio.
Bluetooth Pairing:To pair a new device, twist the volume control
back and forth twice towards the direction of higher volume. (this is the
same action that is used with the tone control to access the virtual fader
function) or push and hold the optional pushbutton. The optional front
panel status LED or the optional pushbutton LED will flash and a Voi c e
Assist HD message will be heard in the radio. The BTU-3.1 will then go
into pairing mode for approximately 90 seconds or until a device is paired.
While in pairing, the BTU-3.1 will display as AuroraDesign BTU-x.x.x in
the Bluetooth section of your device. (x.x.x represents the version) Select
the BTU-3.1 to connect. (refer to the owners manual for your Bluetooth
device for information on pairing) If you wait longer than 90 seconds the
BTU-3.1 will time out and Voi c e A s s i s t H D message will be heard. Up to
eight devices can be paired to the BTU-3.1.
Bluetooth Connecting:The BTU-3.1 will automatically attempt to
reconnect to the last connected Bluetooth device. If this device is not
within range, the BTU-3.1 will then attempt to reconnect to any of the last
four connected devices. This is handy when the user has multiple
Bluetooth devices, or several people use the radio. If any paired device is
within range when the radio is powered on, the BTU-3.1 will reconnect
and return to its last mode. The optional front panel LED or the optional
pushbutton LED will illuminate to signify a Bluetooth device is connected.
A Voi c e A ss i s t H D message will also be heard in the radio when a
Bluetooth device successfully connects.
Bluetooth Name:To change the name of the BTU-3.1 from the
default AuroraDesign BTU-x.x.x to something more personal and easier to
remember if you have multiple FMR/BTU radios (up to 32 characters
long) like Darryl’s 64.5 Mustang, use the FMR Configurator App. Please
refer to the user manual for the App for more information. When followed
correctly the BTU-3.1 will update its name and a Voi c e A s s i s t H D message
will be heard. All previously paired devices will need to be re-paired.
Bluetooth Audio Levels:The BTU-3.1 sends commands to the
connected Bluetooth device to adjust the playback audio levels, but many
devices require that the user make these settings manually. Usually the
playback levels for audio streaming, phone calls and Voice Command are
all stored separately so must be adjusted separately. The first time you
stream audio, take a phone call, or use the Voice Command feature, use the
volume buttons or volume slider menu on the device to adjust the audio
level. This only needs to be performed once on the device as these settings
are permanently saved in the device.
Bluetooth Voice Command:The Bluetooth Voice Command feature
allows the user to control their compatible Bluetooth device through voice
commands. The Voice Command feature is accessible in all radio modes. It
is designed to work with Apple Siri®, Google Voice®and Microsoft
Cortana®and other Bluetooth voice interfaces. To initiate a Voice
Command, twist the volume control back and forth twice towards the
direction of higher volume or push and hold the optional pushbutton/seek-
button. (this is the same motion that was used to open up pairing) Wait for
the confirmation tone from the Bluetooth device and then speak the
command. For example you can say things like “call home” or “play
Bruce Springsteen”. Check with the manual for your Bluetooth device for
further information on its support for voice commands.
Bluetooth/USB Streaming Audio: To start playing music from
either the Bluetooth or USB interface, twist the volume control back and
forth twice towards the direction of lower volume or push and hold the
optional pushbutton/seek-button for about 1 second. (you can also use the
menus on your Bluetooth device to control the audio) Audio will start
playing from the device that has focus as explained above. To toggle
between pause and play, repeat the procedure above. When the audio is
paused, the FMR-3 status LED will blink slowly. If the audio is paused for
more than about 10 seconds, the BTU-3.1 will release the FMR-3 and it
will switch back to normal radio operation. If playback is started again, it
will continue from where it left off.
For the USB interface, if the BTU-3.1 remains in pause for more than
10 minutes, playback will start from the beginning of the last song rather
than from where it left off. Additionally to change the operating mode of
the USB interface between random and sequential playback, start by
placing the USB interface in pause as described above. To select random
playback, twist the tuning control towards the high frequency end of the
dial or quickly press the optional pushbutton/seek-button once. A Vo i c e
Assist HD message will confirm the setting. To select sequential playback,
twist the tuning control towards the low frequency end of the dial or
quickly press the optional pushbutton/seek-button twice. A Voi c e Ass i s t
HD message will be heard to confirm the setting. When playback is
resumed, the current song will start playing over from the beginning.
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To skip to the next song, twist the tuning control towards the high
frequency end of the dial or quickly press the optional pushbutton/seek-
button once. To skip to the previous song, twist the tuning control towards
the low frequency end of the dial or quickly press the optional pushbutton/
seek-button twice. (Hint: when twisting the tuning control, twist it in the
desired direction and then back to the starting point. This way the tuner
always remains in the same position)
In sequential mode, to skip to the next folder, double twist the tuning
control on the radio towards the high frequency end of the dial or quickly
press the optional pushbutton/seek-button once and then press and hold.
To skip to the previous folder, double twist the tuning control towards the
low frequency end of the dial or quickly press the optional pushbutton/
seek-button twice and then press and hold . To reset to the first song, triple
twist the tuning control towards the low frequency end of the dial.
Hands-free Phone:When a phone call comes in, the FMR-3 will
mute the radio and ring through. To accept the call, twist the tuning control
towards the high frequency end of the dial or quickly press the optional
pushbutton/seek-button once. To reject or end a call, twist the tuning
control towards the low frequency end of the dial or quickly press the
optional pushbutton/seek-button twice or press the seek button again.
To mute the microphone, twist the volume control back and forth
twice towards the direction of lower volume or push and hold the optional
pushbutton/seek-button for about 1 second. (you can also use the menus
on your Bluetooth device to control the audio) A repeating confirmation
tone will be heard on the radio while the call is muted. To toggle between
mute and unmuted, repeat the instructions above. When the audio is
muted, the FMR-3 status LED will blink slowly. A Voi c e A s s i s t H D
message will be heard confirming when the call ends.
For call-waiting, follow the same procedure as above to accept or
reject the waiting call. To switch between calls, use the accept call action.
To end the active call, use the reject call action. To join the calls, twist the
volume control back and forth twice towards the direction of higher
volume or push and hold the optional pushbutton/seek-button.
Note: The Bluetooth device can also be controlled using its own menus.
(follow manufactures instructions on controlling your device)
Note: For enhanced operation on Town & Country radios, see Quick
Start Guide.
USB File Structure: The USB drive must be formatted in FAT12,
FAT16 or FAT32 format using a MBR Primary partition. The name of the
drive can be anything, so you may want to name them after the type of
audio on them, i.e. Rock and Roll, Easy listening, Audio Books, etc.
Audio files must be in standard AAC, MP3, Ogg Vorbis or FLAC format
and file names must use the .aac .m4a .mp3 .ogg .flac extensions. Files not
conforming to this specification will be ignored. (DRM protected .m4p
files are not supported)
Each folder, including the root, can contain up to 250 files and an unlimited
number of folders. (2250 folders and 65534 files maximum) In this manner
the root folders could use the artist names with the subfolders named for each
album, or the root folders could be name for music genres, etc.
Since indexing the drive takes a bit of time, the BTU-3.1 will start
playing a song while indexing. Non-audio files will slow the indexing
process down and should be avoided. If the drive must be used for non-
audio files, the audio files can go into a folder named ~Music~. The
BTU-3.1 will then only look in this folder, speeding up the indexing
process.
The BTU-3.1 will place two files named ~AD_USB0.TXT and
~AD_USB1.TXT at the root level. These files are used by the BTU-3.1 for
housekeeping and should not be modified. (these files do contain the
version level of the BTU-3.1)
Suggested USB File Layout
USB Charging: The BTU-3.1 USB port supports SDP, CDP and DCP
charging modes up to 2A. It is compatible with proprietary modes like
Apple® 1A/2A and BlackBerry®. The BTU-3.1 will continue charging
even when the radio is off as long as the vehicle power is on.!
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Troubleshooting:
Poor Range: Make sure nothing is obstructing the dial face of the radio,
or the openings along the bottom side of the radio chassis. Try moving
your Bluetooth device to a different location.
No Sound: For Bluetooth, make sure the BTU-3.1 is paired and
connected to your device. Also make sure the BTU-3.1 is selected as the
audio device for streaming audio and hands-free operation on your
device following the manufacturers instructions. Verify the audio levels
are set properly on the Bluetooth device.
For USB, verify that the USB drive is formatted correctly and contains
valid aac/m4a/mp3/ogg/flac audio files using the correct file extension.
Long Delays: Do not place many non-audio files on the USB drive. This
will slow down indexing the drive.
If the BTU-3.1 is set to sequential playback and you skip songs/folders
while the first song is playing, it may take a while for the next song to
start playing if the indexing process has not yet completed.
The drive may have a corrupted file table. Reformat the drive as FAT16
or FAT32 and recopy your files onto the drive.
USB skipping: Make sure the FLASH drive is fast enough and
defragmented. (FLAC/Ogg require a vey fast drive)
US Certification:
FCC ID: A8TBM20SPKXYNBZ
This equipment has been tested and found to comply with the limits for
a Class B digital device, pursuant to part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses
and can radiate radio frequency energy, and if not installed and used in
accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged
to try to correct the interference by one or more of the following
measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Consult the dealer or an experienced radio/TV technician for help.
European Certification:
The Bluetooth module used in this device complies with the essential
requirements of the R&TTE 1999/EC, the EMC Directive 2004/108/EC
and the low-voltage Directive 2006/95/EC.
Canadian Certification:
IC: 12246A-BM20SPKS1
This device complies with Industry Canada license-exempt RS
standard(s). Operation is subject to the following two conditions: (1) this
device may not cause interference, and (2) this device must accept any
interference, including interference that may cause undesired operation of
the device.
Under Industry Canada regulations, this radio transmitter may only
operate using an antenna of a type and maximum (or lesser) gain approved
for the transmitter by Industry Canada. To reduce potential radio
interference to other users, the antenna type and its gain should be so
chosen that the equivalent isotropically radiated power (e.i.r.p.) is not
more than that necessary for successful communication.
Le présent appareil est conforme aux CNR d'Industrie Canada
applicables aux appareils radio exempts de licence. L'exploitation est
autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire
de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage
radioélectrique subi, même si le brouillage est susceptible d'en
compromettre le fonctionnement.
Conformément à la réglementation d'Industrie Canada, le présent
émetteur radio peut fonctionner avec une antenne d'un type et d'un gain
maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada.
Dans le but de réduire les risques de brouillage radioélectrique à l'intention
des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte
que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas
l'intensité nécessaire à l'établissement d'une communication satisfaisante.
Aurora Design LLC. does not assume any responsibility for personal
injury or property damage incurred due to hazardous driving as a result of
interaction with the BTU-3.1 or other Bluetooth devices.
BE SAFE! Never text while driving or be distracted by the radio.
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Specifications:
Bluetooth Transceiver*:
Frequency Band: 2.40-2.48GHz
Standard: Bluetooth 5.0 certified, Class 2
Profiles: HFP 1.6, A2DP 1.2, AVRCP 1.5
Sensitivity: -90dBm @ 0.1% BER
TX Power: 4dBm maximum
USB Interface:
SDP/CDP/DCP: USB 2.0 (1.0 and 1.1 compatible)
2A maximum charging
USB File System:
Supported Formats: FAT12, FAT16, FAT32
MBR Primary partition only
Maximum Hierarchal Levels: 2 deep under root or ~Music~ folder
Maximum Root Folders: 250
Maximum Total Folders: 2000
Maximum Files/Folder: 250
Maximum Total Files: 65534
Supported File Formats: .acc .m4a .mp3 .ogg .flac
USB Decoder:
Maximum Rate: 48kHz AAC / 384kb/s
48kHz Ogg Vorbis / 500kb/s
48kHz FLAC / 1000kb/s
48kHz MPEG1-L3 / 320kb/s
24kHz MPEG2-L3 / 160kb/s
Minimum Rate: 8kHz AAC / 8kb/s
8kHz Ogg Vorbis / 8kb/s
8kHz FLAC / 75kb/s
32kHz MPEG1.0-L3 / 32kb/s
16kHz MPEG2.0-L3 / 8kb/s
Environmental:
Temperature: -30C to 65C ambient (-22F to
150F) Operating
-40C to 125C ambient (-40F to
257F) Storage
Humidity: 10% to 90% non-condensing
*Characterized by component manufacturer
Note: seek-button refers to the Wonderbar or Town & Country button on a
signal seeking radio. In AM/FM mode this button will only control the
radio seek function, not the Bluetooth/USB.
Bluetooth® is a registered trademark of the Bluetooth SIG
AAC trademark used under license from Via Licensing
All other trademarks are those of their respective owners
Aurora Design LLC. ©2014-22 Rev 3.1.0 10/22
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