astra telematics AT110V5 Benutzerhandbuch - Seite 8
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Seite druckenDigital Inputs
Digital inputs 1 to 4 are normally low and can be connected directly to 12/24V vehicle circuits.
Digital inputs 5 and 6 are normally high, for use in pull-down applications. Simply switch to GND
to activate these inputs.
Note: damage may be caused to the AT110 device if a voltage source is applied to digital inputs
5 and 6.
Digital Outputs
The AT110 is capable of switching 5 different loads using digital outputs 1–5, implemented with
MOSFET low-side switches. These must be used to switch the GND side of the load.
Digital outputs 1-5 are capable of handling loads of up to 30V, 0.5A maximum. The digital
output switches are protected by internal fuses, rated at 0.63A. The fuses are not user-
replaceable, and are not covered by warranty, hence any replacements are chargeable. An
external fuse, rated at 0.5A will avoid internal damage to the AT110 device.
Analogue to Digital Converter (ADC) Inputs
ADC1 can be used to measure analogue voltages up to 5.0V maximum
ADC2 can be used to measure analogue voltages up to 15.0V maximum
External scaling can be used to measure higher voltages if necessary.
Integrated Accelerometer(s)
The AT110 has a built in 3 axis MEMS accelerometer that operates in the range ±2g and is used
to measure driver behaviour (acceleration and braking) during normal driving conditions.
The accelerometer also allows the AT110 to wake from sleep on movement, with configurable
thresholds. Please refer to the MEMS parameter and Power Management section for more
details.
1-wire / iButton / Temperature Probe Interface
This can be used with iButton devices for the purpose of driver ID, or with DS18B20 temperature
probes. Please refer to the appropriate application notes for more details of how to use these
features
CANBus
The AT110has integrated CANBus. Please refer to CANBus and FMS Application Notes for details
of supported protocols and features.
IMPORTANT NOTE: The CANBus pins are ESD protected to 15kV, but can only withstand
a continuous voltage of 12V maximum. These pins must not be used for any other
application to avoid damage to the device.
5-50V, 4.5V and 3.3V Outputs
These are reserved for use with external devices, all are fused at 250mA (non-resetting). The
3.3V regulated output can be used as a reference voltage for external temperature sensors and
used with the ADC1 input.
Device Configuration / Settings
For device configuration and related commands, please refer to the Astra Telematics Command
Reference document, which describes our generic commands, for use with all our devices.
Questions?
If you have any problems, questions, please contact Astra Telematics technical support:
+44 161 826 8800