GRAPHTEC GL980 - Key Lock Release with Password; Operation Flow

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CHAPTER 3 Settings and Measurement
(15) Key lock release with password
A password can be set to cancel the key lock.
(No password is set at factory default.)
<Operation ow>
1. Set the password.
Press the , , and [ENTER] keys at the same time to display the password setting screen shown below.
Specify a 4 digit password.
Use the
,
, , keys to select numbers. Press the [ENTER] key to conrm the password.
Specifying 0000 will disable password operation.
In case you forgot your password, please contact us for the master password.
2. Set the password.
Hold down the and keys together for at least two seconds.
3. Cancel the key lock.
Hold down the and keys together again for at least two seconds.
The password setting screen shown below will be displayed. Set a password.
Entering an incorrect password will not cancel the key lock.
Key lock state will be retained when power is turned off.