UNI-T UTE9800+ Series User Manual page 46

User's Manual
5. Press【OK】key to confirm the setting，if the secret code is correct, then it can enter firmware update
interface.
6. If the upgrade is successful, it will automatically restart and enter the test interface. If the upgrade is
not successful, the instrument will not start normally.
Note:
Please use this function with caution, otherwise the firmware will be lost and the instrument will not start
again.
7.4 Calibration
7.4.1 Calibration of UTE9802+/UTE9811+
Steps
1. Long press 【 ENTER】 (Utility) key to enter Utility menu, press 【 】 or 【 】 key to select submenu "CALib"
as shown in the following figure;
2. Press 【 ENTER 】 key to enter secret code editing, press 【 ▲ 】 【 ▼ 】 【 】 【 】 key to edit secret code ；
3. Press【ENTER】key to confirm the setting，if the secret code is correct, then it can enter calibration
interface;
4. Press【 】or【 】key to select other submenu, or press【SETUP】key to exit Utility menu.
7.4.2 Calibration of UTE9806+
·Steps
1. The instrument is turned off.
2. Press and hold the [D] key and press the power switch to turn on the instrument.
3. It will enter the calibration/upgrade interface after the buzzer beeps twice. Release the [D] key at this
time.
4. Press【▲】【▼】【 】【 】key to edit secret code；
5. Press 【 OK】 key to confirm the setting， if the secret code is correct, then it can enter calibration interface
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