MIL-STD-2042-6B(SH)
Step 9 - Repeat steps 4 through 8 above for all of the OFCCs in the optical fiber cable.
3.3 Procedure II. Method 6B1-1 Cable attenuation test for cables 50 m (165 feet) or greater in length.
3.3.1 The equipment and materials in table 6B1-II shall be used to perform this procedure.
TABLE 6B1-II. Equipment and materials.
|
Description |
Quantity |
Safety glasses |
1 |
Measurement quality jumper cables (NAVSEA DWG 6877804) |
As required |
Bare fiber adapters |
As required |
Calibration cable (known length greater than 100 meters) |
1 |
Optical time domain reflectometer (OTDR) (NSN 7Z 6625 01 383 3789 or equal) |
1 |
Alcohol bottle with alcohol/2-propanol (sealable type) |
1 |
Wipes (NAVSEA DWG 6872811-18 or equal) |
As required |
Canned air or compressed air |
As required |
ST to ST adapter |
As required |
Hybrid adapter |
As required |
NOTE: These procedures were developed from EIA/TIA-455-61 (FOTP 61) "MEASUREMENT OF FIBER OR CABLE ATTENUATION USING AN OTDR."
NOTE: Ensure the test equipment calibration is current.
NOTE: Use a wipe dampened with alcohol to clean all adapters/connectors and blow them dry with air before making connections.
Step 1 - WARNING: When visually inspecting an optical fiber, never stare into the end of a fiber connected to a laser source or LED. Light may not be visible but can still damage the eye.
Following the OTDR manufacturer's instructions, energize the OTDR. If the optical fiber cable group index is not known, proceed to step 2.
If the optical fiber cable group index is known, proceed to step 8.
Step 2 - Connect the calibration cable to the OTDR.
Step 3 - Enter the required parameters, except the optical fiber cable group index, in accordance with the OTDR manufacturer's instructions.
6B1-3
METHOD 6B1
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