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X Series User Manual
USB Device LED Patterns
(NI USB-634x/635x/636x Devices) USB X Series devices have LEDs labeled ACTIVE and
READY. The ACTIVE LED indicates activity over the bus. The READY LED indicates
whether or not the device is configured. Table 3-2 shows the behavior of the LEDs.
Table 3-2. LED Patterns
POWER
LED*
ACTIVE
LED
READY
LED
Off or On
Off
Off
The device is not powered or not connected to the
host computer, or the host computer does not
have the correct version of NI-DAQmx. Refer to
Table 2-4, X Series NI-DAQmx Software
Support, for the NI-DAQmx support information
for your device.
On
Off
On
The device is configured, but there is no activity
over the bus.
On
On
On
On
Blinking
On
The device is configured and there is activity
over the bus.
USB Device State
* USB BNC devices only.
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