3
6 CABLING
6.1
C
ONNECTIONS
Figure 4: modem sockets and connectivity
•
A: RJ12 socket for power
•
B: DB9 socket for serial communication with the radar
•
C: slot for SIM card
•
D: USB socket for modem configuration
6.2
RS-232
COMMUNICATION
The Gemalto 3G or 4G modem includes a DB9 (D-sub 9-pole female) connector with the pin assignment provided in Figure 3 and
Table 1.
6.3
P
OWER SUPPLY
The power supply to the modem uses a RJ12 connector (see
mark A) with the pin assignment provided in Figure 6.
Figure 6: RJ12 pin assignment for power supply, ignition and reset
Table 1: DB9 pin assignment
Pin no. Signal name
I/O
Function
1
DCD0
O
Data Carrier Detected
2
RXD0
O
Receive Data
3
TXD0
I
Transmit Data
4
DTR0
I
Data Terminal Ready
5
GND
-
Ground
6
DSR0
O
Data Set Ready
7
RTS0
I
Request To Send
8
CTS0
O
Clear To Send
9
RING0
O
Ring Indication
Figure 5: female DB9 pin assignment
A
B
D
C