AVL-75 User Manual
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TTW-AVL75-UM001
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3.4.
Ignition Detection
Table 5: Electrical Characteristics of Ignition Detection
Figure 3.
Typical Ignition Detection
The white wire is used for ignition detection. It is strongly recommended to connect this wire to ignition key at
“RUN” position as shown above.
An alternative to connecting 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.Ignition signal can be
configured to start transmitting information to the backend server when ignition is on and enter power saving
mode when ignition is off.
3.5.
Digital Input
There is a negative trigger input on the AVL-75.For negative trigger input the electrical conditions are:
Logical State
Electrical State
Active
0V to 0.8V
Inactive
1.7V to 32V or Open
Table 6: Electrical Conditions of Negative Trigger Inputs
The example connection is showed as follows:
Figure 4.
Example of Connection of Negative Trigger Input
Logical Status
Electrical Status
Active
5.0V to 32V
Inactive
0V to 3V or open
