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Appendix H: Changing Optical Port
Connectors
The following procedures are discussed in this appendix:
H Cleaning the Optical Ports
H Changing the Optical Port Connectors
Cleaning the Optical Ports
If the CTS850 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:
1. Turn off the CTS850 from the power switch located on the front
panel.
2. Remove the four screws that attach the bulkhead connector to the
front panel (see Figure H 1).
3. Gently pull the bulkhead out of the unit and unscrew the fiber
connector. Be careful not to pull beyond the fiber slack.
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 H 2, for information about bulkhead
disassembly.
6. After cleaning the bulkhead, reconnect the fiber and install the
bulkhead. Be sure to reinstall the dustcap chain.
CTS850 SDH Test Set User Manual H 1
Appendix H: Changing Optical Port Connectors
NOTE. To keep cleaning to a minimum, install the dustcap when no
fiber is connected to the optical port.
Optical
Fiber
Connector
Figure H 1:Removing the Optical Bulkhead Connector
Changing the Optical Port Connectors
The CTS850 is shipped with the FC connector bulkhead and dustcap
installed. If you wish to change to the ST, DIN 47256, or SC
connectors perform the following procedure:
1. Turn off the CTS850 from the power switch located on the front
panel.CTS850
2. Remove the four screws that attach the bulkhead connector to the
front panel (see Figure H 1).
3. Gently pull the bulkhead out of the unit and unscrew the fiber
connector. Be careful not to pull beyond the fiber slack.
4. Disassemble the bulkhead as shown in Figures H 2 through H 5.
H 2 CTS850 SDH Test Set User Manual
Appendix H: Changing Optical Port Connectors
Figure H 2:FC Optical Bulkhead Assembly
Figure H 3:ST Optical Bulkhead Assembly
CTS850 SDH Test Set User Manual H 3
Appendix H: Changing Optical Port Connectors
Figure H 4:DIN 47256 Optical Bulkhead Assembly
Figure H 5:SC Optical Bulkhead Assembly
5. Replace the current bulkhead with the one you wish to use and
reassemble.
6. Installation is the reverse of steps 1 through 3.
H 4 CTS850 SDH Test Set User Manual