Code CR2 User Manual Page 21

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C001537_18_CR2_User_Manual 15
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Radio Range and Transferring Data
The CR2 radio is a Class 1 device. If connected to another Class 1 device the reader has roughly a 100 meter (300 feet)
line of sight operating range. If connecting to a Class 2 or Class 3 device, the operating range may drop to match the
lower range. Once a reader is connected, a serial application must be opened (HyperTerminal) unless Code XML Router
is installed.
When the CR2 detects the radio is out of range, the CR2 will store data on the reader’s non-volatile memory. The reader
will continue to try and send data until radio is back in range. Once the data is sent the data will be erased from the
reader’s memory. The reader will continue to try and connect until it has reached the programmable radio time out setting.
The CR2 Bluetooth protocol allows for two (2) forms of communication:
1. Standard Bluetooth Reliability Mode (previously One Way Mode) - Communication between the reader and host,
that does not require host acknowledgement. This mode is only recommended when connecting to a device well
within its specied range or if connecting to a simple device (e.g., printer). There are two settings in this mode:
• Max Range (Default) - Greater range but data reliability is lower
• Max Reliability - Limits range but reliability is improved
RF Standard Bluetooth RF Standard Bluetooth
Reliability Mode (Max Range) Reliablility Mode (Max Reliability)
Note: One Way Mode doesn’t guarantee data integrity, and you may have data loss when operating in the
fringes of radio range or in the presence of radio interference.
2. Additional Bluetooth Reliability Mode (previously Two Way Mode) - This mode requires the implementation of
software at the application level.* The reader receives conrmation via packet protocol verication and is 100%
reliable. Data will be automatically
retransmitted if necessary.
RF Additional Bluetooth
Reliability Mode
* Note: You will need either Code XML Router Software or a Code XML Bluetooth Modem on the PC side to use the
Additional Bluetooth Reliability Mode.
If you are using the CodeXML Bluetooth Modem, you must use RF Additional Bluetooth Reliability Mode.
1.7 - Bluetooth Radio Operation (continued)
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