© National Instruments Corporation 11 NI USB-9215 Series User Guide and Specifications
LED Indicator
The NI USB-9215 Series device has a green LED next to the USB
connector. The LED indicator indicates device status, as listed in Table 2.
When the device is connected to a USB port, the LED blinks steadily to
indicate that the device is initialized and is receiving power from the
connection.
If the LED is not blinking, it may mean that the device is not initialized or
the computer is in standby mode. In order for the device to be recognized,
the device must be connected to a computer that has NI-DAQmx or
NI-DAQmx Base installed on it. If your device is not blinking, make sure
your computer has the latest version of NI-DAQmx or NI-DAQmx Base
installed on it, and the computer is not in standby mode.
Wiring the NI USB-9215 Series Device
The NI USB-9215 Series provides connections for four differential analog
input channels. The NI USB-9215A with BNC has four BNC connectors.
Caution A high voltage screw terminal backshell must be installed when using hazardous
voltages (>42.4 V
pk
, 60 VDC) with the NI USB-9215 Series.
Note The NI 9932 10-terminal, detachable, high voltage, screw-terminal backshell
accessory works with the NI USB-9215 Series and is available from
ni.com. For more
information about installing the backshell, refer to the Assembling the High Voltage Screw
Terminal Backshell section.
Table 2. LED State/Device Status
LED State Device Status
Not lit Device not connected or in suspend.
On, not blinking Device connected, but no module installed.
Single-blink Operating normally.
Double-blink NI USB-9215A only—Connected to USB
Full-Speed port. Device performance might
be affected. Refer to the Specifications
section for more information.
Quadruple-blink Device error. Refer to ni.com/support.
