The equipment will be returned with:- Calibration label- Calibration certificate- Calibration data. Specifications Calibrated: Center Wavelenght Spectral Bandwidth (FWHM) Output Power Power Stability 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). Agilent 81657A repair or adjustment: If your unit does not pass calibration, we will quote a complete repair and get your Fabry-Perot Laser Diode back to working condition. We will solve any error code or error message you might encounter.