MIL-STD-2042-2 Fiber Optic Cable Topology Installation Standard Methods For Naval Ships Equipment Part 2 Of 7 PartsThis standard provides detailed methods for the installation of fiber optic cable topology equipment see 3.16, and optical fiber cable entry to fiber optic cable topology and other equipment.

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MIL-STD-2042-2B(SH)

Blown optical fiber tube

Tube coupler

Blown optical fiber

tube

Furcation unit

Loose tube furcation cable

Individual fibers

buffer tube

FIGURE 2Fl-4. Feeding fibers into the furcation unit.

Step 3 - Carefully insert the furcation unit tube into the tube coupler and firmly seat the tube within the tube coupler (see figure 2Fl-5). Ensure that no fibers are kinked within the tube as it is inserted into the tube coupler. Apply an axial load of approximately 22 N (5 lbs) between the BOF tube and the furcation unit to verify that they are properly engaged into the tube coupler.

Blown optical fiber tube

Tube

Coupler

Furcation unit

Loose tube furcation cable

FIGURE 2Fl-5. Installed furcation unit.

NOTE: Do not rotate the furcation unit with respect to the BOF tube cable.

Rotation of the furcation unit may cause increased optical loss or

fiber breakage.

Step 4 - Mark each loose tube furcation cable to identify the color/number of the fiber within that furcation cable. Refer to table 2Fl-2 for fiber color coding.

NOTE: If marking the color of the fiber within each loose tube furcation cable, colored heat shrink tubing or tape may be used.

2Fl-6 METHOD 2Fl