Digital Outputs - TELETRAC NAVMAN Qtanium 400 Installation Manual

Negative Switching Configuration
A negative switching input requires a Ground switching input; that is, an open circuit to
Earth (or vice versa).
When configured as for negative switching, the input state is considered ON when it
becomes low.
The voltage thresholds that trigger the change in input state are as follows:
STATE VOLTAGE
High >0.5 V
Low <0.2 V / Disconnected
4.8.2

Digital Outputs

The Digital Output(s) have an open collector transistor-type arrangement and are controlled
by the dispatcher through the OnlineAVL2/DIRECTOR software.
A Digital Output pulls low with a maximum current of 250 mA when activated. It has an
over-current tripped protection. If tripped, the output must be changed to OFF, or have a
power cycle to reset the current trip.
Digital Output(s) are commonly used to prevent unauthorized starting of the asset and/or to
activate accessories.
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Qtanium 400 | Installation Manual