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21020285 D User’s Guide
Chapter 3 Hardware Installation
Page 3 - 12 Step 4: Apply power and observe LEDs
Step 4: Apply
power and
observe LEDs
After you have inserted the board into the VMEbus slot, apply power to the
system.
There are two LEDs on the faceplate of the RF3880: one is green and the other
is amber.
Meaning of
LED’s
The LED’s are used in the following manner:
• The green LED indicates BUSY status when the board is processing
commands.
• The amber LED indicates an ERROR status.
Figure 13 Location of LEDs
Power-up
Sequence
At a normal power-up you should observe the following:
1. Both LEDs will briefly light, then the green will go out.
2. The amber LED will stay lit for less than 5 seconds, while self-test is
running.
3. The amber LED will go out, indicating self-test has passed.