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Chapter 2
LEDs, DIP Switches, and Connectors
POWER OK LED
Note
The POWER OK LED does not indicate the status of the isolated power, V
STATUS LED
ACT/LINK LED
10/100 Mbps LED
NI CVS-1450 Series User Manual
Under normal operating conditions, the POWER OK LED remains green
while the NI CVS-1450 device is powered on. A green POWER OK LED
indicates that NI CVS-1450 device main power is receiving power and that
the NI CVS-1450 device is not in a fault state. A red POWER OK LED
indicates that the NI 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.
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 NI CVS-1450
device detects an internal error.
Refer to the
Hardware Errors
for information about LED error indications.
The orange ACT/LINK LED blinks when the NI 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 NI CVS-1450 device is inactive.
Figure 2-2 shows the location of the ACT/LINK LED on the
NI CVS-1450 device.
The green 10/100 Mbps LED is lit when the network provides
10/100 Mbps support and the NI CVS-1450 device is communicating at
10/100 Mbps. If the 10/100 Mbps LED is not lit, the NI CVS-1450 device
is not operating at 10/100 Mbps.
section of Appendix A, Troubleshooting,
2-2
.
iso
ni.com
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