Radicom Research Inc RB540 Manuel D’Utilisation
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Operating the RB540MB for Tx/RX (two-way SCO Link)
The RB540 has optional firmware for TX/RX (two-way SCO Link). This firmware allows the user
to establish a Bluetooth proprietary connection between two RB540 Modules. After a Bluetooth
connection is established between two RB540MB, the user can use the modules as two-way TX/RX
communication.
The following will explain how to use the RB540MB switches to control the RB540 module with
the standard TX/RX (two-way SCO Link) firmware.
Connect a microphone, speaker and USB cable into both RB540MB boards.
to establish a Bluetooth proprietary connection between two RB540 Modules. After a Bluetooth
connection is established between two RB540MB, the user can use the modules as two-way TX/RX
communication.
The following will explain how to use the RB540MB switches to control the RB540 module with
the standard TX/RX (two-way SCO Link) firmware.
Connect a microphone, speaker and USB cable into both RB540MB boards.
1. Power ON RX: Plug your speakers into the SP-R and SP-L two pin headers or into the SPK1
Stereo Jack. There is no polarity. Turn on the PSW1 on the RB540 RX module. All 4 LEDs
will flash once, then LED 1–4 will flash from LED1 – LED2– LED3 – LED4, then LED4–
LED3 – LED2 – LED1. All 4 LEDs will flash at 1second rate. At this moment, the BT module
enters discoverable mode and starts pairing.
will flash once, then LED 1–4 will flash from LED1 – LED2– LED3 – LED4, then LED4–
LED3 – LED2 – LED1. All 4 LEDs will flash at 1second rate. At this moment, the BT module
enters discoverable mode and starts pairing.
2. Power ON TX: Plug your speakers into the SPK1 Stereo Jack. Turn on the PSW1 on the
RB540 TX module. LED1-2 will quick flash alternately, LED3 stays lit.
3. Initiate Pairing: Press TX SW4 to start discovery and pairing. LED2 will quick flash, LED3
remains lit. Wait until RX LED1 is on, press TX SW3 to connect to RX. After connected, RX
LED1 will flash at 1second rate. TX LED2 will flash 2 times a second, LED3 stays lit.
Two-way communication is available on TX and RX.
Both TX and RX can speak and listen to each other synchronously.
LED1 will flash at 1second rate. TX LED2 will flash 2 times a second, LED3 stays lit.
Two-way communication is available on TX and RX.
Both TX and RX can speak and listen to each other synchronously.
Power cycle RB540MB TX or RX, need to repeat #3 Initiate Pairing process to establish the connection.
There is no auto-reconnection supported in this firmware revision.
Note: If RX has paired to another host device (ex. smart phone), please make sure you clear the
There is no auto-reconnection supported in this firmware revision.
Note: If RX has paired to another host device (ex. smart phone), please make sure you clear the
previous pairing record before reconnecting to TX. Long press RX SW4 for 12 seconds to
clear the previous pairing record.
clear the previous pairing record.