User's Manual

Chapter 3
13
CAREU U1 Vehicle Tracker User Guide
Pin# Signal Name Description I/O Electrical Characteristic
8 Output 3
Open-Collector
Output 3
O Imax = 300mA
9 CAN H CAN High I VI = 2.75V ~ 4.5V
10 CAN L CAN Low I VI = 0.5V ~ 2.25V
3. Serial Connector
Pin# Signal Name Description IO Electrical Characteristic
1 Vout 1 Supply voltage output O
Vo = +5V (Vout 1~3 Total Imax =
500mA)
2 GND Signal ground ----
3 TX1 RS232 Data output O
4 RX1 RS232 Data input I
5 Vout 2 Supply voltage output O
6 GND Signal ground ----
7 TX2 RS232 Data output O
8 RX2 RS232 Data input I
9
Vout 3
1-Wire
Supply voltage output
1-Wire Data input
O
I
(Optional)
10
GND
1-Wire_GND
Signal ground
1-Wire ground
----
----
11 TX3 RS232 Data output O
12 RX3 RS232 Data input I
13 SPK+ Audio output O
14 SPK- Audio output O
15 MIC+ Microphone Input I
16 MIC- Microphone Input I
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