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National Instruments Corporation
D-1
VXIpc 800/700 Series User Manual
Appendix
D
LED Indicators
This appendix describes how to read the LEDs on the front panel to
interpret the status of the VXIpc 800/700 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 800/700 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 800/700 is
asserting SYSFAIL, only that there is a device in the system asserting
SYSFAIL.
FAILED LED
The FAILED LED is lit when the VXIpc 800/700 is driving the
SYSFAIL signal. The VXIpc 800/700 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.
