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GRYPHON™ BT OPERATION
7
3
3.2 BLUETOOTH
®
RADIO CONNECTION
During typical operation a physical radio channel is shared by a group of devices
that are synchronized to a common clock and frequency hopping pattern. One
device provides the synchronization reference and is known as the Master. All other
devices are known as Slaves. A group of devices synchronized in this fashion form a
piconet.
Most Bluetooth
®
devices can be both Master or Slave. The Master will be the first
unit to initiate the connection (page procedure).
Some devices can only be Slaves (i.e. printers). They can only wait for a Bluetooth
®
Master device to initiate a connection with them.
Gryphon™ BT can be either Master or Slave. As Master it can initiate a connection
with only one Slave device.
3.2.1
Gryphon™ BT as Slave
Once set as Slave, a Gryphon™ BT reader requires no particular configuration for
communication, however some radio parameters can be set to increase system
performance and data transmission security. At startup the reader can only wait for
the Master to initialize the radio communication.
The following is a general procedure recommended for Gryphon™ BT Slave
applications:
1. Power up the remote Bluetooth
®
Master device (example Laptop or PC).
2. Power up the Gryphon™ BT reader within radio range (10 meters).
Any modifications to the radio configuration should be made at this time
before the radio connection takes place.
3. From the remote Bluetooth
®
Master device, execute the Discovery
procedure, (according to the procedure given in the documentation of the
Bluetooth
®
Master device), to recognize the Gryphon™ BT reader(s) within
radio range.
4. Check that "
Gryphon BTx00
" is shown among the discovered devices.
5. Request to open an SPP connection with Gryphon™ BT, making sure to
disable any required PIN and/or pairing parameters. Gryphon™ BT is
always discoverable and connectable without any required PIN.
Summary of Contents for GRYPHON BT
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