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OA 5000 Series User Manual A --- 15
Appendix F: Maintenance
This appendix describes how to perform routine maintenance on the
OA 5000 Series Optical Attenuators. There are no user-serviceable parts in
the OA 5000. Should your instrument need service, contact your nearest
Tektronix service representative.
The following maintenance procedures are discussed in this chapter.
H Cleaning the Optical Port
H Changing Optical Port Connectors
If the OA 5000 performance appears degraded, the optical fiber and optical
port may be dirty. Clean the fiber connector with a clean cloth. To clean an
optical port, perform the following steps:
1. Turn the power supply off or pull the OA 5000 out of the power module.
2. Use a Phillips screwdriver to remove the four screws that secure the
bulkhead connector to the front panel (see Figure A-1 on page A---16).
3. Gently pull the bulkhead out of the unit and unscrew the fiber connector.
Be careful not to pull beyond the fiber slack. If there is insufficient slack
or if you accidently push the disconnected fiber back into the instru-
ment, then perform the following three steps:
a. Using a flat-blade screwdriver, turn the securing screw on the right-
side cover 90_ counter-clockwise and remove the side cover (See
Figure A-1).
b. You will now have access to the optical fiber. Unscrew it from the
bulkhead if necessary or push it back through the front panel.
c. Reinstall the cover when finished. Turn the securing screw to lock
the side cover.
4. Using a soft, lint-free cloth with a high-quality glass cleaner, clean the tip
of the fiber cable.
5. If available, use low-pressure compressed air or canned air to blow any
dirt out of the bulkhead connector. If compressed air is not available,
then the bulkhead will have to be taken apart and cleaned. Refer to the
Changing the Optical Port Connectors procedure, on page A---17, for
information about bulkhead disassembly.
6. After cleaning the bulkhead, reconnect the fiber and install the bulk-
head. Be sure to reinstall the dust cover chain.
Cleaning the
Optical Ports