National Instruments NI CVS-1450 Series - Manual (Page 34)

Chapter 3 LEDs, DIP Switches, and Connectors
NI CVS-1450 Series User Manual 3-2 ni.com
POWER OK LED
Under normal operating conditions, the POWER OK LED remains green
while the CVS-1450 device is powered on. A green POWER OK LED
indicates that CVS-1450 device main power is receiving power and that the
CVS-1450 device is not in a fault state. A red POWER OK LED indicates
that the CVS-1450 device has shut down because of a fault state. A fault
state occurs when the user shutdown input is asserted, the processor
overheats, or the watchdog timer expires.
Note The POWER OK LED does not indicate the status of the isolated power, Viso.
STATUS LED
The orange STATUS LED remains off under normal operating conditions
and flashes a specific number of times to indicate error conditions or certain
DIP switch settings. The STATUS LED remains lit if the CVS-1450 device
detects an internal error.
Refer to the Hardware Errors section of Appendix A, Troubleshooting ,
for information about LED error indications.
ACT/LINK LED
The orange ACT/LINK LED blinks when the CVS-1450 device receives
data from or transmits data to the network through the Ethernet connection.
Unrelated network activity causes this LED to blink occasionally even
when the CVS-1450 device is inactive.
Figure 3-2 shows the location of the ACT/LINK LED on the
CVS-1450 device.
100 Mbps LED
The green 100 Mbps LED is lit when the network provides 100 Mbps
support and the CVS-1450 device is communicating at 100 Mbps. If the
100 Mbps LED is not lit, the CVS-1450 device is not operating at
100 Mbps.
Figure 3-2 shows the location of the 100 Mbps LED on the
CVS-1450 device.