Becker BD406 - Page 77

Becker Avionics
Installation and Operation
Targets Status Protocol - IF3 Interface
DV16401.03 Issue 04 May 2021 BD406/PBD406 77
Description
Name: Broadcasted Beacon Info; Frame ID: 0 (0x00); Value Block Length: 69 bytes
Bytes 3…18: Message contents. Raw sequence of the encoded bit stream – reflect bits 17…144 of
Message. Data are left aligned (in case of short Message, the last 32 bits are set to 0xFFFFFFFF).
Bit 17 of the Message is MSB bit of byte 3. Bit 144 of the Message is LSb bit of byte 18.
Bytes 19…26: 15HexID. Right aligned data (4 most significant bits of byte 19 always equal to 0).
Byte 27: Year of First Message Detection Time: Range [0 … 99] plus 0xFF. Unit: [1 Year]
(data type: unsigned integer). Value equal to 0xFF denotes Invalid value. Value reported in this
byte includes UTC Offset.
Byte 28: Month of First Message Detection Time: Range [1 … 12] plus 0xFF. Unit: [1 Month]
(data type: unsigned integer). Value equal to 0xFF denotes Invalid value. Value reported in this
byte includes UTC Offset.
Byte 29: Day of First Message Detection Time: Range [1 … 31] plus 0xFF. Unit: [1 Day]
(data type: unsigned integer). Value equal to 0xFF denotes Invalid value. Value reported in this
byte includes
UTC Offset
.
Byte 30: Hours of First Message Detection Time: Range [0 … 23] plus 0xFF. Unit: [1 Hour]
(data type: unsigned integer). Value equal to 0xFF denotes Invalid value. Value reported in this
byte includes UTC Offset.
Byte 31: Minutes of First Message Detection Time: Range [0 … 59] plus 0xFF. Unit: [1
Minute] (data type: unsigned integer). Value equal to 0xFF denotes Invalid value. Value reported
in this byte includes UTC Offset.
Byte 32: Seconds of First Message Detection Time: Range [0 … 59] plus 0xFF. Unit: [1
Second] (data type: unsigned integer). Value equal to 0xFF denotes Invalid value.
Byte 33: Year of Last Message Detection Time: Range [0 … 99] plus 0xFF. Unit: [1 Year]
(data type: unsigned integer). Value equal to 0xFF denotes Invalid value. Value reported in this
byte includes UTC Offset.
Byte 34: Month of Last Message Detection Time: Range [1 … 12] plus 0xFF. Unit: [1 Month]
(data type: unsigned integer). Value equal to 0xFF denotes Invalid value. Value reported in this
byte includes UTC Offset.
Byte 35: Days of Last Message Detection Time: Range [1 … 31] plus 0xFF. Unit: [1 Day]
(data type: unsigned integer). Value equal to 0xFF denotes Invalid value. Value reported in this
byte includes UTC Offset.
Byte 36: Hours of Last Message Detection Time: Range [0 … 23] plus 0xFF. Unit: [1 Hour]
(data type: unsigned integer). Value equal to 0xFF denotes Invalid value. Value reported in this
byte includes UTC Offset.
Byte 37: Minutes of Last Message Detection Time
: Range [0 … 59] plus 0xFF. Unit:
[1 Minute]
(data type: unsigned integer). Value equal to 0xFF denotes Invalid value. Value reported in this
byte includes UTC Offset.
Byte 38: Seconds of Last Message Detection Time: Range [0 … 59] plus 0xFF. Unit: [1
Second] (data type: unsigned integer). Value equal to 0xFF denotes Invalid value.
Bytes 39…42: True Beacon Latitude: Range [-90.0 … 90.0]. Unit: [1 degree] (data type: 32 bits
floating point). Negative value means south, otherwise north.
Bytes 43…46: True Beacon Longitude: Range [-180.0 … 180.0]. Unit: [1 degree] (data type: 32
bits floating point). Negative value means west, otherwise east.
Bytes 47…48: Difference between Message Frequency and 406.050 MHz. Range [-30000 …
31000]. Unit: [Hz] (data type: signed integer, code U2). Value -30000 means that Message
Frequency is equal to 406.020 MHz.
Byte 49: Signal Strength of Message: Range [-150 … 104]. Unit: [dBm] (data type: unsigned
integer, code U2). Value 0 corresponds to -150 dBm, value 150 corresponds to 0 dBm, value 254
corresponds to 104 dBm. Value 255 (0xFF) denotes invalid data.