HXr Installation Manual GRT Avionics
A-8
Revision A5
Display Unit Connector B Pinout Diagram
Connector B is a 25-Pin D-Sub male connector that attaches to the female EFIS 25-pin D-sub. Pins
that are most likely to be used are pre-installed at GRT. Commonly used optional wires are supplied
as loose wires. Wire colors assigned to serial ports are suggestions only. Pins labeled NC have no
internal connection. Connector B wires are 4 feet long. Longer wires are available by special order.
Wiring Harness
Connector B as viewed
from REAR (wired side)
Pin
Function
Wire Color
B25
NC
B24
Reserved for Audio output (future use)
B23
s
Serial 7 IN
ORG/BLK
B22
s
Serial 7 OUT
ORG
B21
Analog 1 IN
B20
Analog 2 IN
B19
Analog 3 IN
B18
Analog 4 IN
B17
Analog 5 IN
B16
Analog 6 IN
B15
Analog 7 IN
B14
Analog 8 IN
B13
Discrete Output 6
B12
Discrete Output 5
B11
Discrete Output 4
B10
Discrete Output 3
B9
Discrete Output 2
B8
Discrete Output 1
B7
s
Serial 8 IN
WHT/GRN
B6
s
Serial 8 OUT
GRN
B5
RS422 Serial 1 OUT B
B4
RS422 Serial 1 OUT A
B3
RS422 Serial 1 IN B
B2
RS422 Serial 1 IN A
B1
NC
_
Connected to wiring harness
s
Supplied as loose pinned wires
13
1
14
25