ES10/ES26
Page 44/104
Document status: released
Operating Manual
rev. 01, 03.11.08
It is recommended to use the high SBS threshold settings (> 16.5 dBm) for distances below
65 km, and the lower SBS thresholds for longer distances.
The SBS threshold can be selected in
0.5 dB
steps between 13.0 and 19.0 dBm for optimization
of the SBS performance in individual applications and link characteristics.
5.4 LED Display
The ES10/ES26 has a LED display (3 LED’s for MODULE, INPUT and OUTPUT) and a LCD in
combination with 6 menu buttons on the front panel for read and set parameters:
For normal operation all LED’s should light green. In case of warnings and alarms the
responsible LED’s turn into yellow or red and the LCD shows further explanations.
Module status
Normal operation:
MODULE LED green
Non urgent alarms: MODULE LED yellow
•
fan 1 or fan 2 failure
•
Power supply 1 or power supply 2 failure
•
Laser cooler current >90 %. In this case the temperature of the transmitter is too high.
Improve thermal heat flow in order to decrease the operating temperature.
•
Laser bias current >130%. The laser has degraded.
In case of a fan or power supply failure the power supply/fan unit has to be replaced. BKtel offers
fans as regular spare parts, too.
Urgent alarms:
MODULE LED red
•
Laser cooler current =100 %. In this case the temperature of the transmitter is too high.
Improve thermal heat flow in order to decrease the operating temperature.
In case of an urgent alarm the transmitter is switched off internally and can only be restarted with
a power on reset by disconnecting the power supply or via the NMS system.
INPUT status
Normal operation:
INPUT LED green
Non urgent alarm:
INPUT LED yellow
RF-input low or high
•
In AGC mode: AGC is out of range
•
In Manual Mode: OMI total rms is out of range
Urgent alarm: INPUT LED red
•
RF-input is missing.
OUTPUT status
Normal operation:
OUTPUT LED green
Non urgent alarm:
OUTPUT LED yellow
