Sir, is there any change at room temperature when you test?
Please power on and wait for 30 minutes to ensure it is warmed up, disconnect any probes or cables from the input connectors. Then, access the “More -> Utility -> Calibration” option and follow the directions on the screen.
you should run the routine again if the ambient temperature changes by 5℃ or more.
Post time 2018-11-22 16:44:32