Calibrating a Cy-160 optical power meter involves using a traceable optical standard, matching the wavelength and connector type, and performing either absolute or relative calibration to ensure accurate readings.

Step-by-Step Calibration Procedure

1. Choose the Calibration Method

• Absolute Calibration: Connect the Cy-160 to a traceable optical power standard, such as a calibrated laser or radiometer, and adjust the meter until its reading matches the reference value. This method provides the highest accuracy and traceability to national standards like NIST .
• Relative Calibration: Use a previously calibrated optical power meter as a reference. Connect both meters to the same optical source and adjust the Cy-160 to match the reference meter's reading. This method is simpler but depends on the reference meter's accuracy . 2. Select the Appropriate Wavelength and Connector
• Ensure the calibration source matches the wavelength(s) you intend to measure (commonly 850 nm, 1310 nm, or 1550 nm for fiber optics), .
• Use the same fiber type and connector as in your measurements to minimize errors caused by reflections or connector mismatches . 3. Prepare the Calibration Setup
• Use a stable optical source with minimal power fluctuations.
• Ensure the Cy-160 and reference standard are properly warmed up and temperature-stabilized if required .
• Minimize back-reflections by using low-reflectance connectors or angled physical contact (APC) connectors. 4. Perform the Calibration
• Connect the Cy-160 to the optical source or transfer standard.
• Record the meter reading and compare it to the reference value.
• Adjust the Cy-160's internal calibration settings or apply a correction factor until the readings match the reference within the desired accuracy .
• Repeat the process for all relevant wavelengths and power ranges. 5. Verify and Document
• After calibration, verify the Cy-160 readings against the reference at multiple power levels.
• Document the calibration results, including date, reference standard, wavelength, and any correction factors applied.
• Maintain traceability to national or international standards for quality assurance . 6. Regular Recalibration
• Optical power meters should be recalibrated periodically, depending on usage and manufacturer recommendations, to maintain accuracy over time . By following these steps, the Cy-160 optical power meter can achieve accurate, traceable measurements suitable for fiber optic testing and other precision applications.