Table 12. STATUS LED Indicators
LED Pattern Indication
Blinks twice and
pauses
The sbRIO-9637 is in safe mode. Software is not installed, which is
the factory default state, or software has been improperly installed on
the sbRIO-9637.
An error can occur when an attempt to upgrade the software is
interrupted. Reinstall software on the sbRIO-9637. Refer to the
Measurement & Automation Explorer (MAX) Help for information
about installing software on the sbRIO-9637.
Blinks three times
and pauses
The sbRIO-9637 is in user-directed safe mode, or the sbRIO-9637 is
in install mode to indicate that software is currently being installed.
This pattern may also indicate that the user has forced the sbRIO-9637
to boot into safe mode by pressing the reset button for longer than five
seconds or by enabling safe mode in MAX. Refer to the Measurement
& Automation Explorer (MAX) Help for information about safe mode.
Blinks four times
and pauses
The sbRIO-9637 is in safe mode. The software has crashed twice
without rebooting or cycling power between crashes.
Continuously blinks The sbRIO-9637 has not booted into NI Linux Real-Time. The
sbRIO-9637 either booted into an unsupported operating system, was
interrupted during the boot process, or detected an unrecoverable
software error.
On momentarily The sbRIO-9637 is booting. No action required.
Off The sbRIO-9637 is in run mode. Software is installed and the
operating system is running.
User LEDs
You can define the USER1 and USER FPGA1 LEDs to meet the needs of your application.
The following table lists the USER1 and USER FPGA1 LED indicators.
NI sbRIO-9637 User Manual | © National Instruments | 27
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