User's Manual

Confidential Document
© ATrack Technology Inc. All Rights Reserved. Page 6 of 16
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The following figure shows serial port connector and its pin number of AL1
The following table shows its function of serial port connector
Serial Port Connector
Pin#
Function
Color
Designation
Note
1
Power Ground
Black
GND
2
RS232 Transmit data output
White
TX
3
RS232 Receive data input
Green
RX
4*
+5V Output for external accessories
Red
+5V
DC5V Max.300mA Output
* Note that the +5V output pin cannot connect to the other power source or short circuit to power ground. If
the connected accessory requires more power, please use external power source instead.
The following figure shows the wire diagram of serial cable.
Serial Port