Page B-14
400 SERIES MAINTENANCE MANUAL
Rev. C
P/N 190-00140-05
B.5.2 J10
Table B-15. J10 Descriptions
Pin #
Pin Name
I/O
Description
1
+12VDC
I
2
+5VDC
I
3
GND
I
4
-12VDC
I
5
VLOC SERIAL IN
I
Serial input from the Main CPU board to the NAV Board.
6
KEY
-
This pin is not used.
7
G/S SERIAL IN
I
Serial input from the Main CPU board to the G/S board.
8
G/S SERIAL OUT
O
This is an asynchronous serial output from the G/S board to the Main CPU
board.
9
NAV VOL
CONTROL
I
This is a dc input in the range between 0 and 5 volts coming through the
Main CPU board from the NAV volume control pot mounted on the bezel.
10
VLOC SERIAL
OUT
O
This is a asynchronous serial output to the Main CPU board from the NAV
Board.
B.5.3 J24
Table B-16. J24 Descriptions
Pin #
Pin Name
I/O
Description
1
+12VDC
O
2
+5VDC
O
3
GND
O
Ground.
4
-12VDC
O
5
G/S IF AGC
I
Glideslope board IF AGC output.
6
NOT USED
I
7
G/S SERIAL IN
O
Serial output to the G/S board from Main Board.
8
G/S SERIAL OUT
I
Serial input from the G/S board to the Main Board
9
G/S + FLAG
I
Input from the G/S board.
10
G/S + UP
I
Input from the G/S board.
11
G/S -
[COMMON]
I
The G/S board COMMON, or G/S -, input. Reference for the G/S + UP and
G/S + FLAG.
12
G/S
SUPER FLAG
OUT
I
G/S board superflag input. (Output on the G/S board is an open collector
output. The G/S superflag will be active (low) when the flag is out of view.)
13
KEY
-
14
G/S RF AGC
I
Not Used.
15
SPARE
-
SPARE
16
KEY
-
