Pwr/Act Led Indicator - National Instruments Data Acquisition Device NI USB-621x User Manual

Chapter 3 Connector and LED Information

PWR/ACT LED Indicator

LED State
Not lit
On, not blinking
Single-blink
Double-blink
NI USB-621x User Manual
The PWR/ACT LED indicator indicates device status. Table 3-2 shows the
behavior of the PWR/ACT LED.
Table 3-2. PWR/ACT LED Status
Device not powered or device error. Refer to
device is powered.
Device error. Refer to
Operating normally. Connected to USB Hi-Speed port. Refer to the
NI USB-621x Specifications for more information.
Connected to USB Full-Speed port. Device performance might be
affected. Refer to the NI USB-621x Specifications for more information.
Device Status
.
ni.com/support
3-5
if
ni.com/support
ni.com