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MAP 2330: 7133 Models D40 and T40 – Optical Extender
This maintenance analysis procedure (MAP) describes how to analyze a failure that has
occurred in the optical link.
Diagnostic aid is provided by two lights on each optical extender: a Power light 1 and
a Receive light 2 . During normal operations, both lights of each optical extender are
on (see Figure 43).
Figure 43. Optical Extender with a Wrap Cable and Adapter Assembly
A wrap cable and adapter assembly 3 is provided with each optical extender. This
assembly consists of a fibre optic wrap cable 4 and a fibre optic wrap adapter
The two parts of the assembly are used during diagnostic procedures. The wrap cable
connects the connectors of the optical extender to each other; the wrap adapter
connects the two main fibre optic cables to each other.
Important Notes:
1. Ensure that each fibre optic cable is connected, via multi-mode conditioners (if
present), between the Receive connector of one optical extender and the Transmit
connector of the other optical extender.
Note: The connectors are identified by symbols. An arrow entering a circle
2. Before connecting fibre optic cables and devices, ensure that the end faces of the
cables are clean. If necessary, use a small cotton pad to apply a fibre-cleaning fluid,
such as IPA/D-1 Water Mix 106-17F, to the end faces.
3. When the wrap cable and adapter assembly is not in use, the ends of the wrap
cable are protected as follows:
v If the wrap cable is 400 mm (15 in.) long, each of its ends is connected to the
2
1
identifies the Receive connector. An arrow leaving a circle identifies the
Transmit connector. (See also Figure 9 on page 22.)
wrap adapter to make a closed loop.
5
4
3
Chapter 2. Problem Determination Procedures
1
2
5 .
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