General Description
Becker Avionics
Scope of Functionality
20
BD406/PBD406
DV16401.03 Issue 04 May 2021
Internal GPS Receiver
BD406 is equipped with an integrated GPS receiver module LEA-6S manufactured by u-blox. For
details about the GPS receiver please see www.u-blox.com.
BD406-(XX1) / PBD406-(XX1) use GPS data in ASCII format (NMEA 0183 compliant) from the internal
GPS receiver via RS232 interface. Details "IF2 - GPS Interface (external/internal)" page 55.
•
Connect active GPS antenna to the BD406/PBD406 only when the device is
not
powered-on.
•
Do not connect or disconnect the GPS antenna when the BD406/PBD406
operates, as the internal GPS receiver calibrates the noise floor on power-up.
•
To connect the antenna after power-up can cause an extended acquisition
time.
•
Use ONLY active antennas according to specification see "GPS Antenna"
page 25.
•
Passive GPS antennas must not be connected.
Built-In Tests
BD406 with control head:
After power-on, the device starts a self-test (PBIT).
In case of errors the device notifies the user about any malfunction. During PBIT the receiver identifies
itself and shows the software versions of the control head and chassis module.
During normal operation, a continuous built-in test (CBIT) verifies the correct operation of the device in
background. In case of problems an error notification is shown, details see "Warning and Failure
Indications" page 86.
BD406 without control head:
To control and read the test results and messages an external control interface is required. In case of
problems, an error notification can be read out through the external control interface.
Installation Setup
BD406 with control head:
Configuration of the installation parameters such as headphone and speaker activation, GPS source,
illumination level, and further parameters is possible in installation setup.
BD406 without control head:
Only manufacturer (on customer request) configures specific installation settings. Contact
manufacturer to change current configuration when device is already delivered.
Service Mode
Special factory configuration of the system is possible in this mode through a RS422 interface with a
proprietary serial data communication protocol. This mode is serviced by the manufacturer.
