Optical Power Meter Test Jumper
Use the one-jumper reference method to measure jumper loss accurately with an optical power meter.
Step 1: Prepare Your Equipment
- Clean all connectors using lint-free wipes or click-to-clean tools to prevent dust from affecting measurements .
- Select the correct wavelength on your optical power meter to match the signal you are testing .
- Ensure you have a high-quality launch reference jumper of the same fiber type and connector style as the jumper under test .
Step 2: Set the Reference
- Connect the launch reference jumper directly from the optical light source (OLS) to the optical power meter (OPM) .
- Zero out or reference the power meter to establish a baseline power level. This step ensures the meter ignores the loss from the reference jumper itself .
- Keep the launch cord connected to the light source; do not disconnect it after referencing .
Step 3: Connect the Jumper Under Test
- Attach a mating adapter to the end of the reference jumper connected to the OPM .
- Connect this setup to the first connector of the jumper under test.
- At the far end, connect the second connector of the jumper to the power meter.
Step 4: Measure Insertion Loss
- The reading on the OPM now shows the total insertion loss of the jumper, including both connectors and the fiber itself .
- For multimode jumpers, use a mandrel wrap if required to ensure accurate readings .
- Typical acceptable loss values are ≤0.5 dB per connector; if higher, clean connectors or replace adapters .
Step 5: Verify and Record
- Repeat measurements if necessary to ensure consistency.
- Record the measured loss in dB for documentation and compliance with industry standards .
- Always handle jumpers carefully to avoid bending or damaging the fiber, which can affect readings.
Best Practices
- Use lab-grade reference jumpers to minimize measurement errors .
- Regularly calibrate your optical power meter to maintain accuracy .
- Avoid removing the launch reference cord after referencing, as this requires resetting the reference .
- Always verify that the connector types and fiber types match between the test setup and the jumper under test . By following these steps, you can accurately test fiber optic jumpers and ensure reliable insertion loss measurements for your optical network.
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