User Manual

ADCP-75-179 • Preliminary Issue A • September 2004 • Section 4: maintenance
Page 4-18
© 2004, ADC Telecommunications, Inc.
6. Connect a 1 meter patch cord between the optical attenuator and the REV (PORT 2)
optical port.
7. Place the On/Off switch in the ON position (press I) and observe the FWD/REV (PORT 1/
PORT 2) LED indicator.
8. The FWD/REV (PORT 1/PORT 2) LED indicator will turn either red or green. If the LED
turns red, either the FWD (PORT 1) optical transmitter or the REV (PORT 2) receiver is
faulty. If the LED turns green, both the FWD (PORT 1) and the REV (PORT 2) optical
ports are good.
9. Place the On/Off switch in the OFF position (press O).
10. Remove the dust caps from the optical fiber connectors.
11. Clean each connector (follow connector supplier’s recommendations) and then insert each
connector into the appropriate optical port.
12. When ready to put the unit back into service, place the On/Off switch in the ON position
(press I).
13. Notify the NOC or alarm monitoring service that the system is going back online.