National Instruments USB-6341-BNC

National Instruments USB-6341-BNC


  • 8 differential or 16 single-ended BNC analog inputs (16-bit, 500 kS/s).
  • 2 BNC analog outputs.
  • Compatible with QtracW Threshold Tracking Software and the Digitimer DS4 and DS5 Bipolar Stimulators.



Digitimer now recommends the National Instruments USB-6341-BNC in place of the USB-6221-BNC and USB-6251-BNC which have been discontinued.  This interface is suitable for customers who are interested in a DAQ interface which is compatible with QtracW Thereshold Tracking software for nerve, muscle and cortical excitability studies.

The National Instruments USB-6341-BNC is a 16 AI (16-Bit, 500 kS/s), 2 AO (900 kS/s), 24 DIO USB Multifunction I/O Device. It offers analog I/O, digital I/O, and four 32-bit counters/timers for PWM, encoder, frequency, event counting and much more.

Onboard NI‑STC3 timing and synchronization technology from the NI USB-6341-BNC delivers advanced timing functionality, including independent analog and digital timing engines and re-triggerable measurement tasks.

The USB‑6341 is well suited for a broad range of applications, from basic data logging to control and test automation. The included NI‑DAQmx driver and configuration utility simplifies configuration and measurements.

For more demanding applications that require faster data transfer speeds, such as microneurography, we suggest a PCI-based equivalent (e.g. PCI-6221).  Please contact us for further details.

If you wish to find out more about the USB-6341-BNC then you can contact us by calling 01707 328347 or by emailing us at

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