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notices of warnings, and can correct the majority of status deflections of the
equipment, such as: system parameter floating, equipment tolerance, laser aging,
RF level changes, and temperature changes. The PUMP laser will continue
operating when alarming. The alarm will disappear if the facility is self-detecting
continually or the relative system parameter recovers into normal range. Some
serious warnings can be eliminated by restarting the power supply of the unit. The
warning will disappear automatically if the relative parameters recover to normal
range.
Most of warnings will be sent out when the correction ability is close to or exceeds
the permitted range. For most situations, the user cannot modify these statuses.
Status modification needs special equipment & available facility, thus the
modification can only be processed in the factory.
a.
Warning status
When pump laser is in warning status, the status LED will turn red and the
brief note of the status will be displayed on the screen. The warning will not
make the EDFA stop operation, and it only shows the relative parameter
exceeding to normal scope slightly. If the warning stops, it indicates that the
relative parameter has returned into the permitted scope. The screen & LBD
will return to their normal status and there is no need for user to interfere.
Note that we should emphasize that the problem displayed by the alarm
should not be ignored, there may be a serious system fault.
Work status
Status display
LED
color
Explanation
Present laser
deflection is low
Key Off
Red
The EDFA isn’t operating. It’s shut
down.
Present case temp -
Red
Warning when the temp ≥60°C.
Input
Input Low
Red
Optical input power is low.
Output
Output Low
Red
Optical output power is low.
Table 5-1 Warning status
b.
Alarm status
When the pump laser displays a warning, it will stop operating generally. The
alarm is may be that a relative parameter exceeds its safety operational
scope or that some sort of situation has caused damage to the laser. The
alarm can be eliminated by restarting the power supply or resetting the key
switch. If the user cannot eliminate the alarm, please contact our company
immediately.
c.
Fault prevention
Please read the below information to prevent potential problems.
1.
Please place the pump laser within an environmental temperature of 0°C
