21-11
IM WT18
O
1E-02EN
21.10 Locking the Keys
This section explains how to lock the panel keys, which prevents you from unintentionally changing the 
current state of this instrument.
► “Key Lock (KEY LOCK)” in the features guide
Key Lock (KEY LOCK)
Press SHIFT+LOCAL (KEY LOCK). “LOCK” is displayed in the upper right of the screen, and the 
operation keys are locked.
•  The key lock disables all keys of this instrument except for the power switch, SHIFT key, and LOCAL 
key.
•
 
Press 
SHIFT+LOCAL
 (KEY LOCK) again to release the key lock.
Note
When the keys are locked, you cannot use a USB mouse or keyboard to operate this instrument either.