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RS-232 WIRELESS BRIDGE USER’S MANAUL REV. 02 6
Fig 3. Wireless Bridge Connectors and Pins
Operation
Standard Operation
The RS-232 Wireless Bridge is designed to be data transparent. By default, any data sent into one device
is broadcast and received by all other Wireless Bridge devices within range. Any device that receives the
transmitted data packet will send the received data out the serial port to its host. Without any
configuration the Wireless Bridge will operate in a point-to-point or point-to-multipoint mode.
Additional addressing can be used to isolate communication between specific devices or to create
unique networks.
The Wireless Bridge device is equipped with a micro USB connector. When the micro USB connector is
plugged into a USB host device such as a computer, the Wireless Bridge enumerates as two standard
serial COM ports. One port is a data port and can send and receive data. The second COM port is the
device’s information port. When the micro USB connector is plugged into the RS-232 Wireless Bridge,
the DB9 port is disabled. The DB9 port is the default data port and is automatically used whenever the
USB cable is not plugged in.
The Wireless Bridge uses standard composite device drivers which are preinstalled in Windows 10 and
MAC computers. Drivers will need to be installed for Windows 7 machines. While not every machine will
enumerate exactly the same, as a general rule the lower numbered COM port is for Wireless Bridge
configuration. The higher numbered COM port can be used to transmit or receive data over the USB
port.
LED Indication
The wireless bridge has four LEDS for indication. The Blue Power LED is lit any time the Wireless Bridge is
properly powered. A green TX LED and yellow RX LEDs indicate activity on the serial port of the device.
They do not necessarily reflect all activity that may be occurring over the air as they will only blink when
a properly addressed data packet is received. The Special function LED is lit when the USB port is in use.