USB modules offer 80 analog inputs

National Instruments has released two 16-bit, 80-analog-channel USB data-acquisition modules. The USB-6225 samples at 250 ksamples/s, and the USB-6255 samples at 1.25 Msamples/s. The USB-6255’s stated sample rate is for a single channel, with the aggregate sampling rate of 750 ksamples/s; the USB-6225 maintains its maximum sample rate when running multiple channels.

Both models feature two 16-bit analog outputs (833 ksamples/s for the USB-6225 and 2.8 Msamples/s for the USB-6255) and 24 digital I/O channels, eight of which are clocked. Each module can store up to 4055 samples in first-in/first-out memory, and each also includes two 32-bit counter/timers.

You can connect sensors, signal conditioners, and other signal sources to the modules through their screw-terminal connectors. The modules are compliant with IEEE 1541.4 transducer electronics data sheet (TEDS) sensors. Software support includes LabView, LabWindows/CVI; LabView SignalExpress, Visual Studio .NET, C/C++/C#, and Visual Basic.

Prices: USB-6225—$1599; USB-6255—$2599. National Instruments, www.ni.com.