RED
BLK
GRN
ORG
BRN
BLU
WHT
YEL
PUR
GRY
RED
BLK
YEL
ORG
GRY
BRN
MX421/MX521A/MX525A
DGPS Smart Antennas
BLU
WHT
GRN
PRPL
MOB
PWR FAIL
N.C.
PWR FAIL
C
PWR FAIL
MOB
P
O
R
T
1
M
X
4
2
1
SPEE
D
LOG
E
X
T
.
A
L
A
R
M
G
P
I
O
1
G
P
I
O
2
G
P
I
O
3
P
0
R
T
4
P
O
R
T
5
P
O
R
T
6
P
O
R
T
7
P
O
R
T
8
P
O
R
T
9
P
R
T
1
0
P
R
T
1
1
1
2
V
GND NMEA1
RX
GND
A In A Out
B In
B Out
GND
A Out
GND NMEA5
B Out
A In
A Out
B In
B Out
A In
A Out
B In
B Out
A In
A Out
B In
B Out
A In
A Out
B In
B Out
A In A Out
B In
B Out
A In
A Out
B In
B Out
GND
RS-232 GND
RS-232 TX
RS-232 RX
A In
A Out
B In
B Out
A In
A Out
B In B Out
A In
A Out
B In B Out
A In
A Out
B In
B Out
RED
BLK
GRN
ORG
BRN
BLU
WHT
YEL
PURPLE
GRY
+12 VDC
GND (-)
DRY RELAY
3
DRY RELAY
4
DRY RELAY
1
DRY RELAY
2
UPPER LOWER
ECDIS
PILOT
PORT
DGPS
CH1
_IN+
CH1
_IN-
CH1
_GND
CH
2_GN
D
CH2
_IN+
CH
2_IN-
CH3
_IN+
CH3_
IN-
CH3
_GND
CH4_
GND
C
H
4
_
I
N
+
C
H4_I
N-
CH
4_OU
T+
CH
4_OU
T-
CH5
_IN+
CH5
_IN-
CH5
_OU
T+
CH5
_OU
T-
CH5
_GN
D
CH8
_GN
D
CH
8_IN+
C
H8_O
UT+
CH8
_IN-
CH
8_OU
T-
C
H
9
_
I
N
+
C
H9_
OUT+
CH
9_IN
-
C
H9_O
UT-
C
H9_
GND
S
PR_
GND
SPR_
IN+
SPR
_OU
T+
S
PR_I
N-
SPR_
OUT
-
CH6
_CAN
H
CH
6_VIN
CH6_
CAN
L
CH6
_GN
D
CH10_1 CH1
0_2
J5
J3
J7
J6
J1
J2
J4
B In B Out
A In
A Out
PORT 2
MX512 CDU
UPPE
R
L
O
W
E
R
PORT11 TX/RX (RS-232)
Printer Output
EXT. MOB
SWITCH
5
2
3
9-dB Serial
Connector
1
2
3
4
Notes:
1. Cables 1, 2 3 & 4 are pre-installed in
the junction box.
Where:
1 - AUX Cable (500 100 1001)
2 - ANT Cable (3508 102 70150)
3 - PWR/DATA Cable (500 100 2001)
4 - 44-Pin Cable (512 100 2001)
5 - 50-Pin Cable Assy (3508-102-70840)
2. J4 and J5 labels were enlarged
for easy reading.
PORT10 TX/RX (RS-422)
PORT9 TX/RX (RS-422)
PORT8 TX/RX (RS-422)
PORT7 TX/RX (RS-422)
PORT6 TX/RX (RS-422)
PORT5 TX/RX (RS-422)
PORT4 TX only (RS-422)
EXT. ALARM
N.O. CONTACTS
PORT2 TX/RX (RS-422)
PORT1 TX/RX (RS-422)
N/U
+24 VDC POWER
GND
GENERAL POWER
ALARM
5
Blue - Negative
Red - +24 VDC
MX535
AIS TRANSPONDER
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