F6000 Family of Power System Simulators User Guide
72A-1589 Rev. C 02/01 6-7
D
DD
D
R
RR
R
A
AA
A
F
FF
F
T
TT
T
3
33
3
/
//
/
5
55
5
/
//
/0
00
0
1
11
1
Analog I/O Circuit Board
The analog I/O circuit board is installed in slot 4 and has four LEDs.
When the F6000 is powered up, but idle, all LEDs should be OFF. Analog
I/O board LEDs are defined in Table 6.3.
LED3
General purpose lights used for CPU/RAM status and
power-on self-test.
LED2
LED1
LED0
LOCK 1PPS lock for GPS communications (not supported in
software).
Table 6.2 CPU Board LED Indicators (Continued)
CPU Board
LED
Indication
Table 6.3 Analog I/O Board LED Indicators
Analog I/O
Board LED
Indication
A/D Test
[D1]
Illuminates red during power up only, then OFF. This
LED is for Doble use only.
• If the LED illuminates a steady red, the PCB may be
installed in an incorrect slot.
CPU ENAB
[D2]
Illuminates green during power up only, then OFF.
SAFESTAT
[D3]
Should never illuminate green during power up.
SAFECTRL
[D4]
Illuminates green when any source is turned ON.
• Does not illuminate during power up or when idle.