Table 1. 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.
This usually indicates that the sbRIO-9637 has run out of memory.
Review your LabVIEW Real-Time application to resolve any memory
leaks.
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.
NI sbRIO-9637 Getting Started Guide | © National Instruments | 9
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