MEITRACK T333 User Guide
Copyright © 2015 Meitrack Group All rights reserved. - 12 -
8
Installing the T333
8.1
Installing GPS and 3G Antennas
3G antenna
GPS antenna
Connect the 3G antenna to the connector which is labeled "GSM". The 3G antenna is non-directional, so you can hide it in any
place of a vehicle.
Connect the GPS antenna to the connector which is labeled "GPS". It is recommended that the antenna is facing up to the sky
and the antenna side with words is downwards. Secure the antenna by using double sided tapes.
Note: Do not install the GPS antenna at a place with metal.
8.2
Installing an I/O Cable
The I/O cable is a 12-pin cable, including the power, analog input, digital temperature sensor input, and negative/positive input
and output.
1
Power (+)
3
Input 1
5
Input 2
7
Input 3
9
Fuel sensor
11
Output 2
2
GND (-)
4
GND (-)
6
GND (-)
8
AD input 1
10
Output 1
12
Digital Temperature Sensor
Pin Number
Color
Description
1 (Power +)
Red
Positive charge of the power input, connected to the positive charge of the
vehicle storage battery. Input voltage: 11 V to 36 V. 12 V is recommended.
2 (GND)
Black
Ground wire, connected to the negative charge of the vehicle storage battery or
to the negative terminal.
3 (Input 1)
White
Digital input 1, negative trigger (SOS button by default)
4 (GND)
Black
Ground wire, connected to input 1 (SOS button)
5 (Input 2)
White
Digital input 2 (negative trigger)
Connect to a door trigger signal cable to detect vehicle door status. (Most
Chinese, Korean, and Japanese cars are negative edge-triggered.)
6 (GND)
Black
Ground wire
It can be used as a ground wire connected to an analog sensor.
