National Instruments 800 Series - Manual (Page 48)

© National Instruments Corporation C-1 VXIpc 800 Series User Manual
Appendix
C
LED Indicators
This appendix describes how to read the LEDs on the front panel to
interpret the status of the VXIpc 800 Series.
VXIbus Interface Status LEDs
The VXIbus interface status LEDs are located at the top of the module
and include four LEDs: FAILED, SYSFAIL, ONLINE, and TEST.
They indicate the various stages of initialization that occur as the
VXIpc 800 boots. The following paragraphs describe each LED.
SYSFAIL LED
The SYSFAIL LED is lit when the VMEbus SYSFAIL signal is
asserted. It does not necessarily indicate that the VXIpc 800 is asserting
SYSFAIL, only that there is a device in the system asserting SYSFAIL.
FAILED LED
The FAILED LED is lit when the VXIpc 800 is driving the SYSFAIL
signal. The VXIpc 800 asserts SYSFAIL when the PASSED bit in its
VXIbus status register is clear. The PASSED bit is set by the power-on
self configuration circuitry (POSC) when it has completed initializing
the VXIbus interface.
ONLINE LED
The ONLINE LED is lit when the Resource Manager has successfully
completed and the VXIbus interface is ready for application programs.
TEST LED
The TEST LED is lit when the power-on self configuration circuitry is
configuring the VXIbus interface.