User's Manual

GRYPHON™ BT SH3500
54
5
5 REFERENCES
5.1 DATA FORMAT
The output message from Gryphon™ BT SH3500 towards the Host uses the
following format:
[Bluetooth

 Reader Addr] [Reader Addr Delimiter] [Header]
[Code ID] [Code Length]
CODE
[Terminator]
[Items in square brackets are optional.]
5.2 RADIO PARAMETERS
5.2.1 Radio Protocol Timeout
This parameter sets the valid time to wait before transmission between the
Gryphon™ BT SH3500 reader and the remote Bluetooth
®
device is considered failed.
This parameter should be set taking into consideration the radio traffic (number of
readers in the same area). It can be set between 3 and 19 seconds.
5.2.2 ACK/NACK Protocol and Frame Packing
ACK/NACK Protocol
The transmission protocol takes place between the reader and the Host. The reader
passes its data (code read) to the remote Bluetooth
®
device (Host).
When ACK/NACK is disabled, there is no control from reader to Host transmission,
therefore the reader responds with the good reception tone.
Host with Bluetooth
®
device
GRYPHON



BT
data
good RX
beep
ACK/NACK disabled