MIL-STD-2042-2B(SH)
Proceed to step l below for passive alignment or proceed to step 2 below for active alignment.
Step l - Passive alignment - verify the tab alignment by inserting the splice assembly into the splice alignment tool making sure the tabs fit into the tool slots (see figure 2Dl-4). If necessary, rotate either ferrule slightly to align the tabs. Remove the splice from the tool.
Alignment tabs
Splice alignment
tool
Slots for alignment tabs
FIGURE 2Dl-4. Aligning tabs. Step 2 - Active alignment -
WARNING: Do not stare into the end of a fiber connected to an LED or laser diode. Light may not be visible but can still damage the eye.
Using the appropriate test adapters or test jumper cables in accordance with table 6Cl-III in Part 6 of this standard practice, connect the cable ends opposite the splice ferrules of cable under test to the light source and detector of two optical loss test sets and energize both (see figure 2Dl-5).
NOTE: Both optical loss test sets should be allowed to warm up before starting the active alignment so that the readings are stable.
Light source
Splice
Detector
Jl J2
FIGURE 2Dl-5. Active splice alignment cable hookup.
Step 3 - Rotate the ferrules relative to each other until the maximum power is recorded at the optical detector. De-energize the optical loss test sets.
2Dl-4 METHOD 2Dl
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