Table 7. LED Indications (Continued)
LED
LED
Color
LED State
Indication
PWR/
FAULT
—
OFF
The IC-3121 is OFF. This is not an indication of
whether power is applied or not.
Green
Solid
The IC-3121 is operating normally and is properly
powered on.
Red
Blinking
The IC-3121 power-up sequence failed.
USER1/
USER2
Green/
Yellow
—
User-controlled LEDs that can be controlled using
the NI System Configuration API.
Related Information
Safe Mode
on page 18
Ethernet LEDs
The Gigabit Ethernet port has the following LEDs.
Figure 17. LEDs for the Gigabit Ethernet Port
1
2
1. Activity/Link LED
2. Speed LED
Table 8. Ethernet LED Indications
LED
Status
Indication
Activity/Link
Unlit
No link has been established
Solid
A link has been established
Blinking
Activity on the link
Speed
OFF
No link, or 10 Mbps link
Green
100 Mbps link
Amber
1,000 Mbps link
IC-3121 User Manual
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© National Instruments
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