Appendix C
LED Indicators
© National Instruments Corporation
C- 3
VXIpc-850 Series User Manual
Board Access LEDs
The board access LEDs, ACCESS and DRIVE, indicate when board
resources have been accessed . The following paragraphs describe these
LEDs.
ACCESS LED
When lit, the ACCESS LED indicates that the VXIpc-850 MODID line
is asserted or that another VXIbus master is accessing VXIbus shared
registers or shared memory.
DRIVE LED
The DRIVE LED light indicates that an access to the internal hard disk
drive is occurring.
Ethernet LEDs
The Ethernet LEDs (RX, TX, LINK, and DSEL) indicate the status of
the Ethernet interface.
RX LED
The RX LED lights when the Ethernet interface is receiving a packet.
TX LED
The TX LED lights when the Ethernet interface is transmitting a
packet.
LINK LED
The LINK LED indicates LINK status and can generally be used to
check if Ethernet activity is occurring.
DSEL LED
The DSEL (Device Select) LED lights when Ethernet registers are
being accessed.