At ETI, we do everything in our power to adjust units back within tolerance and manufacturer specifications. If the unit is defective, not operating, or otherwise may not be adjusted through standard accepted calibration procedures, we recommend submitting the unit for repair evaluation. ETI has dedicated repair specialists experienced in a wide variety of test and measurement equipment. If we cannot repair the unit for you, we are happy to coordinate directly with the OEM to ensure the process is easy and efficient from your standpoint.