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GDR-XXXX NAV/COMM INSTALLATION MANUAL
64-000109
Page 60 of 62
37. ARINC Label 263 & 264, ILS Ground Station ID
The detected Morse code is transmitted on ARINC labels 263 and 264. When valid data is not
present, the SSM bits are set for “No Computed Data”.
Table 44: Morse code first word format, ARINC Label 263
P
a
ri
ty
(
o
d
d
)
S
ig
n
/S
ta
tus
Ma
tri
x
Sp
a
re
A
c
t/
St
an
d
by
P
2
nd
Character
(A)
MSB
LSB
P
1st Character
(I)
MSB
LSB
Res
(SDI)
Character ID
Octal
LSB MSB
1 2 4 1 2 4 1 2
Bit #
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
8 7 6
5 4 3
2 1
LABEL 263
0
1 1
0 0 0
0
1 0 0 0 0 0 1 0
1 0 0 1 0 0 1
0 0
1 1 0
0 1 1
0 1
ASCII (65)
ASCII (73)
3
6
2
Table 45: Morse code second word format, ARINC Label 264
P
a
ri
ty
(
o
d
d
)
S
ig
n
/S
ta
tus
Ma
tri
x
Sp
a
re
A
c
t/
St
a
n
d
b
y
P
4th Character
(C)
MSB
LSB
P
3rd Character
(B)
MSB
LSB
Res
(SDI)
Character ID
Octal
LSB MSB
1 2 4 1 2 4 1 2
Bit #
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
8 7 6
5 4 3
2 1
LABEL 264
0
1 1
0 0 0
0
1 0 0 0 0 1 1 0
1 0 0 1 0 1 0
0 0
0 0 1
0 1 1
0 1
ASCII (67)
ASCII (66)
4
6
2
Table 46: Status Matrix definition
Bit 31
Bit 30
Status
0
0
Verified
0
1
No Computed Data
1
0
Functional Test
1
1
Not Defined
Table 47: Sign Bit definition
Bit 27
Meaning
0
Active Receiver ID
1
Standby Receiver ID
Summary of Contents for GDR- COM Series
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