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is returned into permitted scope. The screen & LBD will return to their
normal status and there is no need for user to interfere. But what should
emphasize is that the problem showed by alarm cannot be ignored, because
it is possible there are some serious system faults.
Work status
Status display
LED
color
Explanation
Present laser
deflection is low
Key Off
Red
The EDFA isn’t working. It’s shut down.
Present case temp -
Red
Warning when the temp ≥60°C.
Input
Input Low
Red
Optical output power is low.
Output
Output Low
Red
Optical output power is low.
Table 6-1 Warning status
6.2 Alarm status
When the pump laser sends out warning, it is stopped working generally. The
alarm is because of some relative parameter exceeding its safety working
scope or some situation causes damage to the laser. Some alarm could be
eliminated by restart the power supply or reset the key switch. For user
couldn’t eliminate some alarm, please contact our company immediately.
6.3 Fault prevention
User can notice below information to prevent some potential problems.
1.
Please place the pump laser under environment temperature 0°C ~50°C,
other conditions accords with requested running range. We suggest placing
the EDFA in low dust environment.
2.
Ensure the rear panel fan & front panel sockets in ventilation; let the
rear panel fans running.
3.
Check the power supply to see whether it works in stipulated
standard scope. And check all the joints are correct.
4.
Check the changing of RF gain, and control it in the permitted range.
5.
Keep the optic fiber connector clean & joint properly. Prevent output
optic power decreasing result from optic leakage.
