4‑Slot, USB CompactDAQ Chassis—The cDAQ‑9174 is a CompactDAQ USB chassis designed for small, portable sensor measurement systems. The chassis provides the plug‑and‑play simplicity of USB to sensor and electrical measurements. It also controls the timing, synchronization, and data transfer between C Series I/O modules and an external host. You can use this chassis with a combination of C Series I/O modules to create a mix of analog I/O, digital I/O, and counter/timer measurements. The cDAQ‑9174 also has four 32‑bit general-purpose counters/timers. With multiple timing engines, you can run seven hardware-timed operations simultaneously, with three independent rates for analog input.