Currently, there are many different data loggers on the market. However, only fleet loggers are suitable for the harsh operating conditions in the automotive field. Loggers should offer a wide range of features that covers the majority of requirements for today's vehicles during test drives. They include a large number of CAN, LIN and FlexRay channels, short start-up times and I/O ports on the logger. UMTS, WLAN, USB and Ethernet offer the necessary flexibility to configure the loggers and transfer the logged data. Fleet data loggers from Vector, with their extended temperature range and durable packaging, equip the test engineer with devices ideally suited for use under extreme environmental conditions.