Typical MDT Features
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- 9 VDC to 36 VDC input power.
- SAE J1455 compliant
- Electrical transient protection, such as described in ISO 7637, Electrical disturbance on road vehicles.
- Serial port to connect to a satellite or terrestrial radio transceiver.
- Digital I/O to monitor external events.
- Removable medial or I/O port of retrieving data or upgrading software.
- Wide operating temperature -10 C to 60 C or better.
- Drop tested to MIL-STD 810E, which specifies multiple drops from 48" to plywood over concrete.
- Sealed against dust and liquid.
- Connections to industry specific equipment, such as J1708 data bus for commercial truck applications.
- Display technology specific to viewing conditions for the intended industry (LCD, TFT LCD, Vacuum fluorescent display, CSTN).
- Integrated un-interruptible power supply, which will ride through electrical brown-outs typical in vehicle installations.
- Internal 802.11b transceiver (depending on target application), possibly with external antenna connection.
A related device classification, specific to the transportation industry, is called automatic vehicle location (AVL). Mobile data terminals are often used in conjunction with a ¨black box¨ that contains GPS receiver, cell phone transceiver, other radio devices, or interfaces to industry-specific equipment. AVL devices may be simple stand-alone modems or may include operating systems with application space for the system integrator.
Read more about this topic: Mobile Data Terminal
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