1. Muab tus ntsuj plig rau ntawm lub dav hlau uas tsis ntau tshaj 3 degree (tuaj yeem muab piv rau qib ntsuj plig) thiab tos 10 vib nas this.
2. Nias lub khawm calibration ib zaug, cov zaub yuav qhia CAL1.
3. Tig cov qib digital los ntawm 180 degree, tos 10 vib nas this, ces nias lub khawm calibration, cov zaub yuav tso tawm CAL2, tom qab li 5 vib nas this, lub LCD yuav tso saib "Succ" thiab lub buzzer yuav beep peb zaug tsis tu ncua, lub calibration ua tiav.
4. Yog hais tias tom qab calibration, peb dashes "-" tshwm nyob rau ntawm lub LCD npo, uas txhais tau hais tias cov theem tsis sib npaug zos rau lub kab rov tav dav hlau thaum lub sij hawm tig, thiab lub calibration tsis zoo, koj muaj peev xwm rov calibrate.
