Chapter 2
LEDs, DIP Switches, and Connectors
NI CVS-1450 Series User Manual
2-2
ni.com
POWER OK LED
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.
Note
The
POWER OK
LED does
not
indicate the status of the isolated power, V
iso
.
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 NI CVS-1450
device detects an internal error.
Refer to the
section of Appendix A,
for information about LED error indications.
ACT/LINK LED
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.
10/100 Mbps LED
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.
