HEM Data’s DAWN mini logger for in-vehicle diagnostics is the industry’s smallest high speed data logger, according to the company. The compact device fits within the mating OBD (J1962) connector under the dashboard. Because of its small size, the DAWN mini logger is easy to install by just snapping onto the on-board diagnostics (OBD) connector. Once installed, it is ready to acquire data and is hidden from the driver. The stand-alone logger supports automotive protocols including CAN to acquire OBD and enhanced diagnostic data. In addition, the device supports the J1939 heavy-duty protocol. The DAWN mini logger is suitable for a wide range of applications including fleet monitoring, R&D, duty-cycle measurements, and service. The user has the option to connect a PC to the mini logger for real-time data analysis and display. Computer interface options include USB, Bluetooth, and a cellular modem.