The WA-1600 calibration is performed on site in our lab. Our premium calibration is designed to assure that the wavelength meter meets or exceeds manufacturers published specifications. The equipment will be shipped with:- Calibration label- Calibration certificate- Calibration data. Specifications Calibrated: Absolute Wavelength Accuracy Absolute Power Accuracy Sensitivity Maximum Input Power Return Loss Traceability: Instrumentation used during this calibration is traceable to N.I.S.T (National Institute of Standards and Technology) and C.N.R.C. (Canadian National Research Council). Burleigh WA-1600 repair or adjustment: If your unit does not pass calibration, we will quote a complete repair and get your wavelength meter back to working condition. We will solve any error code or error message you might encounter.