User guide

25-69-01
Page 37 of 44
JUN 27/12
ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
DGL-1, DONGLE (453-4010)
SUBTASK 25-69-01-450-002
C. 24-Bit Address Reprogramming
(1) The 24-bit address is composed of binary “1s” and “0s”, with a “1” electrically grounded to the
airframe and “0” electrically open.
(2) Encoding is accomplished by using a 24-bit address switch block which internally grounds
selected addresses.
(3) Remove the Dongle in accordance with “Dongle Removal” on page 27.
(4) Determine the appropriate binary 24-bit address based on the octal or hexadecimal ID code
assigned to the aircraft. See "Figure 9. Octal/Hexadecimal to Binary Conversion".
Figure 9. Octal/Hexadecimal to Binary Conversion
(5) Set the 24-bit address switch block switches as appropriate for the 24-bit address binary code
determined in the previous step. See "Figure 10. 24-Bit Address Switch Block", on page 38.
(6) Install the Dongle in accordance with “Dongle Installation” on page 31.
MSB
LSB
ADDRESS 1
ADDRESS 24
101000001011100000101111
ICAO Octal Address to 24-Bit Binary
40575013
101000001011100000101111
A0B82F
ICAO Hex Address to 24-Bit Binary
MSB
LSB
ADDRESS 1
ADDRESS 24
Example No. 1: Converting ICAO address 50134057 (octal) to
binary 24-bit address
Example No. 2: Converting ICAO address A0B82F (hexadecimal) to
binary 24-bit address
1 1 1 0
1 1 1 1
Hex Binary
1 0 1 0
1 0 1 1
1 1 0 0
1 1 0 1
0 1 1 0
0 1 1 1
1 0 0 0
1 0 0 1
E
F
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
A
B
C
D
6
7
8
9
2
3
4
5
Hex
0
1
Binary
HEXADECIMAL/BINARY
EQUIVALENTS
71 1 1
51 0 1
61 1 0
30 1 1
41 0 0
10 0 1
20 1 0
Octal Binary
00 0 0
OCTAL/BINARY
EQUIVALENTS