Radicom Research Inc RB540 Manuel D’Utilisation
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Operating the RB540MB for Standard RX
The RB540-a/c has optional firmware for Standard HFP+A2DP Stereo RX. This firmware allows
the user to establish a Bluetooth stereo connection between a RB540-a/c module and a Bluetooth
capable cell phone. After a Bluetooth connection is established with the phone, the user can pick up
a phone call or play music from his phone.
The following will explain how to use the RB540MB switches to control the RB540-a/c module
with the standard HFP+A2DP RX firmware.
Connect a microphone, speaker and USB cable into RB540MB board.
1. Power ON: After turning on Power Switch PSW1, the LED 1–4 will flash once and light from
LED1 – LED2 – LED3 – LED4, then LED4 – LED3 – LED2 – LED1, then all LED1–4 will
flash for 2 times. If no paired before, the module will automatically start pairing and enter
discoverable mode. If paired before, the module will immediately look for the previously
paired device and try to reconnect. After 5 minutes, no Bluetooth Connection is established, the
module will go to standby mode and the LED1 will flash every 2 seconds.
flash for 2 times. If no paired before, the module will automatically start pairing and enter
discoverable mode. If paired before, the module will immediately look for the previously
paired device and try to reconnect. After 5 minutes, no Bluetooth Connection is established, the
module will go to standby mode and the LED1 will flash every 2 seconds.
2. Initiate Pairing: When the module is in standby mode, press button SW4 for 5 seconds to
initiate entering discoverable and pairing. If pressing longer than 10 seconds, the BT module
will clear paired device and look up for new BT device again. During the pairing, LED1–4 will
flash on and off at 0.5 second rate.
Turn on BT mode in your phone, and go to search mode. You can use phone to connect
RB540MB. The device name to search for RB540-a is "Std RX v21.004", and for RB540-c is
“Std RX v22.004”. After paired, LED1–4 will flash 5 times and then LED1 will flash at
1second rate while LED 2-4 off. Once connected, as shown on your phone, you can start to
play music to RB540MB.
will clear paired device and look up for new BT device again. During the pairing, LED1–4 will
flash on and off at 0.5 second rate.
Turn on BT mode in your phone, and go to search mode. You can use phone to connect
RB540MB. The device name to search for RB540-a is "Std RX v21.004", and for RB540-c is
“Std RX v22.004”. After paired, LED1–4 will flash 5 times and then LED1 will flash at
1second rate while LED 2-4 off. Once connected, as shown on your phone, you can start to
play music to RB540MB.
3. Play Music: Plug your speakers into the SP-R and SP-L two pin headers or into the SPK1
Stereo Jack. There is no polarity. Go to your phone application and start playing music. There
are 10 levels of volume up and down. SW2 is volume + and SW1 is volume -. It will have a
warning sound when reaching maximum volume. Button SW2 and SW1 can be pressed step
by step or continuously. You can also use phone to change speaker volume.
are 10 levels of volume up and down. SW2 is volume + and SW1 is volume -. It will have a
warning sound when reaching maximum volume. Button SW2 and SW1 can be pressed step
by step or continuously. You can also use phone to change speaker volume.
4. Hands Free Phone Operation (HFP): The RB540MB can also be used for hands free phone.
Use button SW3 for call pick up/ end call, once you hear ring tone from speaker, plug
microphone and speaker for your hand free device.
microphone and speaker for your hand free device.
Incoming call: when incoming call, the 4 LEDs will flash 8 times. It will repeat until the call is
pick up, go to voicemail or disconnect. After pick up call, LED 1-4 will flash from LED1 –
LED2 – LED3 – LED4, then LED4 – LED3 – LED2 – LED1 periodically.
End call: After picking up the call, if press SW3 button will disconnect the call. Music resumes
after call ends.
Power cycle RB540MB or switch off-and-on the cell phone Bluetooth, the module will automatically
connect to the cell phone.
connect to the cell phone.