Before installing the USB-6421, you must install the software you plan to use with it.

  1. Install your application software, such as LabVIEW or FlexLogger.
  2. Install NI-DAQmx.
    Note FlexLogger installs NI-DAQmx by default if you install it with the recommended settings. Therefore, you might not need to install NI-DAQmx separately if you installed FlexLogger as your application software.