SMC Networks PF3A703H-L Operation Manual page 69

<Operation – Without security code input>
•Locking
(1) Press the S button for 5 seconds or longer in measurement mode. When [oPE] is displayed on the
main display, release the button.
The current setting [LoC] or [UnLoC] will be displayed on the sub display.
(2) Select the key locking/ un-locking with ▲ or ▼ button, and press the S button to set.
•Unlocking
(1) Press the S button for 5 seconds or longer in measurement mode. When [oPE] is displayed on the
main display, release the button.
The current setting [LoC] or [UnLoC] will be displayed on the sub display.
(2) Select the un-locking [UnL] with ▲ or ▼ button. Setting is recognized by pressing the S button, then
security code is required. When the security code is set, select the un-lock [UnLoC] with ▲ or ▼ button.
Setting is recognized by pressing the S button, then the security code is required. If the security code is
not set, select the un-lock [UnLoC]. Locking is released by pressing the S button.
(3) For the input method, refer to [F81] Security code (checking of the setting of security code) (page 57).
(4) If inputted security code is correct, the indication of the main display changes to [UnLoC], and pressing
one of ▲, S or ▼ button releases key lock and the measurement mode returns.
If the security code entered is incorrect, [FAL] will be displayed on the main screen, and the security
code must be entered again. If an incorrect security code is entered 3 times, [LoC] will be displayed on
the main screen and the device will return to measurement mode.
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