Rev. AV Page 24-9
GDU 4XX/37X (ANY)
P4X02/P3701
GSA28 ROLL SERVO
SERVO POWER
SERVO POWER GND
CWS/DISCONNECT
CAN-TERMINATE
CAN-TERMINATE
GSA28 PITCH SERVO
PITCH STRAP
PITCH STRAP
8
5
15
1CAN-H
CAN-L
4
3
2
TO CWS/DISC BUTTON
RS-232 TX 1
RS-232 RX 1
7
8
RS-232 RX 1
RS-232 TX 148
47
GMC305/307
J30X1
RS-232 RX 2
RS-232 TX 23
4
RS-232 RX 1
RS-232 TX 11
2
AIRCRAFT POWER 1
POWER GROUND5
7
AIRCRAFT POWER 29
LIGHTING BUS HI11
LIGHTING BUS LO12
POWER GROUND15
2
GMC305/307
BACKUP POWER
# 22
14/28 Vdc
# 22
# 22
# 22
CAN-TERMINATE
CAN-TERMINATE
1CAN-H
CAN-L
4
3
2
NOTE: REQUIRED WHEN LOCATED
CWS/DISCONNECT
15
TO CWS/DISC BUTTON
CWS/DISCONNECT
CAN-TERMINATE
CAN-TERMINATE
GSA28 YAW SERVO
TRIM IN 2
TRIM IN 1
12
11
YAW STRAP
YAW STRAP
7
6
15
1CAN-H
CAN-L
4
3
2
TO YAW TRIM SWITCH
TO YAW TRIM SWITCH
(OPTIONAL FOR YAW SERVO)
TRIM OUT 2
TRIM OUT 1
14
13
TO YAW TRIM MOTOR
TO YAW TRIM MOTOR
5
AUTOPILOT
14/28 Vdc
10SERVO POWER
SERVO POWER GND 9
SERVO POWER
SERVO POWER GND 9
10
3
YAW SERVO
14/28 Vdc
#22
#22
#22
P281
P281
P281
WIRE WHEN USING AUTO-TRIM
S
S
RS-232 RX 2
RS-232 TX 230
14
RS-232 RX 3
RS-232 TX 313
29
OR
OR
CONFIGURATION GUIDANCE
1. G3X
A. ON THE GDU 4XX/37X CONFIG MODE RS-232 PORT CONFIGURATION PAGE
SET RS-232 PORT CONNECTED TO THE GMC TO "GARMIN INSTRUMENT DATA"
B. ON THE GDU 4XX/37X CONFIG MODE LRU EQUIPMENT CONFIGURATION PAGE
SET AUTOPILOT SERVOS TO ONE OF FOLLOWING:
"ROLL ONLY", "PITCH + ROLL", OR "PITCH + ROLL + YAW"
CWS/DISC BUTTON
N.O. PUSH TO GROUND
CONNECT TO ALL SERVOS
(OPTIONAL FOR YAW SERVO)
TRIM IN 2
TRIM IN 1
12
11
TO PITCH TRIM SWITCH
TO PITCH TRIM SWITCH
TRIM OUT 2
TRIM OUT 1
14
13
TO PITCH TRIM MOTOR
TO PITCH TRIM MOTOR
TRIM IN 2
TRIM IN 1
12
11
TO ROLL TRIM SWITCH
TO ROLL TRIM SWITCH
TRIM OUT 2
TRIM OUT 1
14
13
TO ROLL TRIM MOTOR
TO ROLL TRIM MOTOR
AT END OF CAN BUS
NOTE: REQUIRED WHEN LOCATED
AT END OF CAN BUS
NOTE: REQUIRED WHEN LOCATED
AT END OF CAN BUS
CAN BUS
TO/GA BUTTON
N.O. PUSH TO GROUND
DISCRETE IN 1 40
OR DISCRETE IN 2 41
OR DISCRETE IN 3 42
OR DISCRETE IN 4 43
CONFIGURED FOR "AFCS TO/GA"
GEA 24 CONNECTOR J244
TO CWS/DISC BUTTON
ANY SPARE INPUT DISCRETE
CONFIGURED FOR
"REMOTE GO AROUND"
GTN 6XX/7XX
OPTIONAL DPST BUTTON
FOR GTN MISSED APPR.
CAN-TERMINATE
CAN-TERMINATE
GSA28 SERVO
1CAN-H
CAN-L
4
3
2
S
P281
NOTE: WHEN SERVO IS LOCATED AT END OF CAN BUS,
INSTALL JUMPER BETWEEN PINS 3,4 AND
CONNECT CAN BUS (WITHOUT NODE) DIRECTLY
TO PINS 1,2 AND CONNECT SHIELD TO BACKSHELL.
TO/GA BUTTON
N.O. PUSH TO GROUND
DISCRETE IN 1 9
OR DISCRETE IN 2 10
OR DISCRETE IN 3 11
OR DISCRETE IN 4 12
CONFIGURED FOR "AFCS TO/GA"
GSU 73 CONNECTOR J731
ANY SPARE INPUT DISCRETE
CONFIGURED FOR
"REMOTE GO AROUND"
GTN 6XX/7XX
OPTIONAL DPST BUTTON
FOR GTN MISSED APPR.
FOR INSTALLATION USING GSU 73
FOR INSTALLATION USING GEA 24
CAN BUS
CAN BUS
S
S
S
WIRE WHEN USING AUTO-TRIM
WIRE WHEN USING AUTO-TRIM
SEE PIN 6 NOTE6
PIN 6 NOTE: INSTALL AN EMPTY PIN 6 IN THE CABLE
CONNECTOR TO KEY THIS CONNECTOR AND PREVENT
IT FROM BEING INSTALLED UPSIDE DOWN
NOTE: TO/GA BUTTON MUST BE DOUBLE POLE TYPE SWITCH
TO PREVENT GEA 24 OR GSU 73 AND GTN DISCRETE
INPUTS FROM AFFECTING ONE ANOTHER. DO NOT
CONNECT TOGETHER ON A SINGLE POLE SWITCH.
S
S
S
S
S
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