USB data-acquisition modules take power from bus
By Staff -- Test & Measurement World, 10/1/2006
National Instruments has expanded its USB line of data-acquisition modules by introducing four bus-powered modules that feature the performance of the company’s M series instruments. The new USB-621x series also increases sampling rate for the company’s bus-powered USB modules from 50 ksamples/s to 250 ksamples/s with 16-bit resolution. All models in the series include two 32-bit counter-timers for frequency measurements, timing, and totalizing. The USB-6215 and USB-6218 have analog inputs with 60-V isolation.
National Instruments, www.ni.com/usb.
| Model | Analog Inputs | Digital In/Out | Analog Outputs | Price |
| USB-6210 | 16 | 4/4 | none | $499 |
| USB-6211 | 16 | 4/4 | 2 | $699 |
| USB-6215 | 16 | 4/4 | 2 | $899 |
| USB-6218 | 32 | 8/8 | 2 | $1099 |
