At 400 ksamples/s, Measurement Computing's USB-1608FS-Plus eight-channel USB data-acquisition device offers twice the throughput of its predecessor, the USB-1608FS, at the same price of $399. In addition to its eight 16-bit simultaneously sampled analog inputs, the USB-1608FS-Plus provides eight high-drive (24-mA) digital I/O lines, one 32-bit event counter, one external digital-trigger input, and one bidirectional external clock terminal.
Each analog-input channel has a dedicated ADC for simultaneous sampling. The device offers software-selectable analog-input ranges of ±10 V, ±5 V, ±2 V, and ±1 V. Data can be acquired using software-paced, hardware-paced, or burst-scan mode.
In software-paced mode, the typical throughput sample rate is 500 samples/s (system-dependent). In hardware-paced mode, the total sample rate is 400 ksamples/s divided by the number of channels being sampled, with a maximum rate of 100 ksamples/s for any channel. Burst-scan mode achieves a total sample rate of 800 ksamples/s and is limited to acquisitions of up to 32,768 samples, which is the capacity of the USB-1608FS-Plus's FIFO buffer.
Software supplied with the USB-1608FS-Plus includes TracerDAQ with drivers for Visual Studio, Visual Studio .NET, DASYLab, and LabView. Also included is Measurement Computing's DAQFlex open-source software framework, which provides programming support for Windows, Linux, and Mac operating systems.
Measurement Computing, www.mccdaq.com/usb-data-acquisition/USB-1608FS-Plus.aspx