Instruction Manual

36 Board Interfaces
System LEDs
Table 4-1: cPCI-3970 Front Panel System LED Descriptions
1. Power, WDT, Overheat, GP LEDs are connected to GPIO pins
of IPMC.
LED Color Condition Indication
Power
1
Green/
Red
OFF System is off
Red System Power ready (PWGD)
Green Post OK
WDT
1
Orange
OFF No Watchdog event
Blinking Watchdog event alert
HDD
Blue
OFF No CF/CFast/SATA HDD activity
Blinking
Data read/write in process for CF/CFast/
SATA HDD
Overheat
1
Red
OFF
CPU T
junction
temperature is under 100ºC
ON
CPU T
junction
temperature exceeds 100ºC
GP
(General
Purpose)
1
Yellow
OFF No activity
ON/Blinking Defined by user