GV75MG User Manual
5.3.
Power Supply Connection
The red wire is power line and the black wire is ground line. The input voltage range for this
device is from 8V to 32V DC. The device is designed to be installed in vehicles that operate
on 12V/24V systems without the need for external transformers.
Figure 6.
Typical Power Connection
5.4.
Ignition Detection
The white wire is used for ignition detection. It is recommended to connect this line to
the “RUN”
position of the vehicle ignition switch as shown below.
An alternative to connect to the ignition switch is to find a non-permanent power source that is
only available when the vehicle is running. For example, the power source for the FM radio.
IGN signal can be configured to transmit information to the backend server when ignition is on
and enter power saving mode when ignition is off.
Table 8.
Electrical Characteristics of Ignition Detection
Logical State
Electrical Characteristics
Active
5.0V to 32V
Inactive
0V to 3V or Open loop
Figure 7.
Typical Ignition Detection
5.5.
Digital Input
There is a negative trigger input on GV75MG. For negative trigger input, the electrical conditions
are:
Table 9.
Electrical Characteristics of Digital Input
Logical State
Electrical State
Active
0V to 0.8V
Inactive
1.7V to 32V or Open
QSZTRACGV75MGUM0101 8
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