5 reset button, 6 led indicators, Reset button – ADLINK PXIe-3975 User Manual
Page 25: Led indicators, Figure 2-3, Pxie-3975 led indicators, Table 2-3: led indicator legend

Getting Started
13
PXIe-3975
2.3.5
Reset Button
The reset button, activated by insertion of any pin-like implement,
executes a hard reset for the PXIe-3975.
2.3.6
LED Indicators
Four LED indicators on the faceplate indicate operational status of
the PXIe-3975, as follows.
Figure 2-3: PXIe-3975 LED Indicators
Table 2-3: LED Indicator Legend
LED
indicator
Color
Description
Power LED
Green
Indicates system power. Remains lit when the
system boots normally and main power supply is
functioning.
HDD LED
Yellow
Indicates operating state of the HDD. Flashes
during access to or activity on the SATA HDD.
Watchdog
Red
Indicates status of the watchdog timer, lighting
when watchdog timer has expired. Please refer
to Appendix B for watchdog timer programming
information.
HS LED
Blue
Indicates system status, blinking on and off once
during boot when system status is good, and
continuously blinking or remaining lit when the
system malfunctions.
HDD
Status
Watchdog
Power