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If the Cricket was turned on with the test switch in the ``ON''
position, then the serial port is disabled to save energy while running.
You have two options if you want to communicate with the beacon over the
command interface:
- Restart the Cricket with the test switch in the ``OFF'' position.
  Note that this configuration consumes more power.
 
- Connect the Cricket to a MIB510CA programmer.  The serial port is
  then accessible without using the on-board RS232 controller.
 
Michel Goraczko
2004-12-02