Locking The Front Keys, Keyboard, And/Or Mouse (Touch Screen); Locking The Front Keys, Keyboard, And/Or Mouse; Setting The Beeper (Built-In Speaker) - Keysight E4990A Help Manual

with your software entitlement certificate if the option is added with the
upgrade kit.
Locking the Front Keys, Keyboard, and/or Mouse (Touch
Screen)
You can lock (disable) the front keys, keyboard, and/or mouse (touch
screen). This feature prevents erroneous operation caused by inadvertently
touching any of these devices.

Locking the Front Keys, Keyboard, and/or Mouse

1. Press
System
2. Click the corresponding key to switch the lock ON/OFF.
Softkey
Front Panel &
Keyboard Lock
Touch Screen &
Mouse Lock
device. To unlock the front panel keys, keyboard, touch screen
and mouse that have been locked, press the Standby switch to
turn OFF the power supply and then turn it ON again. When
setting at power-on, the front panel keys, keyboard, touch
screen and mouse are all in unlocked condition.
Other topics about Setting Control Functions

Setting the Beeper (Built-in Speaker)

Setting the Operation Complete Beeper
•
Setting the Warning Beeper
•
Other topics about Setting Control Functions
The E4990A has a built-in speaker that emits a beep tone. The beeper
allows you to make two types of settings.
Type
Operation
complete beeper
> Misc Setup > Key Lock.
Function
Switches the lock of the front panel
keys and keyboard ON/OFF.
Switches the lock of the touch screen
and mouse ON/OFF.
You cannot use a locked device to unlock that same
Function
Emits a beep tone to inform the user that
operations have completed.
Setting Control Functions
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