Lock/Local Key; Password Setting - Extech Instruments 7470 Operation Manual

4.2. LOCK/LOCAL Key

4.2.1. Lock Function
Press the LOCK/LOCAL key. If the Password is enabled, the display will show:
Password = _ _ _ _
Range : 0 - 9 9 9 9
Use the Numeric Key to enter the password and then press the ENTER key. The
program will switch the Key Lock function from LOCK to UNLOCK or UNLOCK to
LOCK mode and advance the program to Operation mode automatically. If the wrong
password is entered, the program will give a warning sound and the display will show:
Password = ERROR
Range : 0 - 9 9 9 9
And then the program will return to the original screen and wait to enter the new
password. If the Password is disabled (Password is set "0"), the display will show:
Key Lock =
ENTER to Select
Use the ENTER key to select the Key Lock mode, and then press the EXIT key. The
program will switch the Key Lock function from LOCK to UNLOCK or UNLOCK to
LOCK mode and advance the program to the Operation mode automatically. If the
Key Lock function is in the Lock mode, the LOCK indicator on the front panel will light.
If the Memory Lock function is selected to ON, the Memory selection Menu will be
disabled when in the Lock Mode. If the Memory Lock is selected to OFF, the Memory
selection Menu will be enabled when in the Lock Mode. Different memories can be
recalled but the test parameters or steps cannot be changed.
Please refer to section 4.1.7, Memory Lock for instructions on this feature.
4.2.2. Local Function
Use this key when you wish to go from the Remote operation of the instrument to the
Local mode.

4.3. Password Setting

Press the "4" and "7" keys simultaneously and then turn the input power switch on.
The program will automatically enter to the Password Setting mode and the display
screen will show:
Password
Range : 0 - 9 9 9 9
The Password can be any four (4) digit number. If the Password is set to 0, the
36
O N
= 0
or Key Lock =
ENTER to Select
or Password
Range : 0 - 9 9 9 9
O F F
= X X X X