4-slot USB CompactDAQ chassis - cDAQ-9174 is a bus powered CompactDAQ USB chassis designed specifically for small portable sensor measurement systems. The chassis can easily connect sensors and electrical measurements through plug and play USB. The chassis can also control the timing, synchronization, and data transmission between the C-series I/O modules and external hosts. The chassis can be combined with different C-series I/O modules to achieve mixed measurement of analog I/O, digital I/O, and counter/timer. The cDAQ-9174 also has four 32-bit universal counters/timers. Multiple timing engines enable users to run seven hardware timed operations simultaneously, and can use three different analog input rates simultaneously.