Appendix B
LED Indicators
©
National Instruments Corporation
B-3
Board Access LEDs
The board access LEDs
—
ACC
,
DRV
, and
SCSI
—
indicate when
board resources have been accessed. The following paragraphs describe
these LEDs.
ACC LED
When lit, the
ACC
LED indicates that the VXIpc 870 Series MODID line
is asserted or that another VXIbus master is accessing VXIbus shared
registers or shared memory.
DRV LED
The
DRV
LED light indicates that an access to the internal hard disk drive
or the CD-ROM on the 871 is occurring.
SCSI LED
The
SCSI
LED light indicates that an access to an external hard disk drive
is occurring.
Ethernet LEDs
The Ethernet LEDs (
RX/TX
,
LNK
, and
100B-T
) indicate the status of the
Ethernet interface on the VXIpc 870 Series.
RX/TX LED
The
RX/TX
LED lights when the Ethernet interface is receiving or
transmitting a packet.
LNK LED
The
LNK
LED indicates link status
—
in this case, that the controller is
connected to a valid Ethernet port.
100B-T
The
100B-T
LED indicates that the current Ethernet connection is at
100 Mbits/s when lit.