The 4-channel ET-4 model of the Expert Transient data acquisition system is designed for data acquisition and fault diagnostics. This system is especially suited for smaller applications that only require a few analog input channels. It can synchronously acquire multiple analog channels at sample rates up to 50 kHz and operate as a standalone device recording to internal memory to capture both transient and periodical data. In the event of a fault, this enables precise identification of the sequence of events in a malfunction. Measurement data can be recorded either continuously or according to trigger conditions and events.