RIGOL DP832A - Manual (Page 26)

RIGOL Chapter 1 Quick Start
1-8 DP800A User’s Guide
4. Preset
Restore all the settings of the instrument to default values or
recall the user-defined channel voltage/current configuration.
5. OK
Confirm the parameter setting.
Press and hold this key to lock the front panel keys; at this point,
the front panel keys (except the output on/off key of each
channel) are not available. When the keyboard lock password is
disabled, press and hold this key again to unlock the front panel
keys. When the keyboard lock password is enabled, you need to
input the correct password (2012) to unlock the front panel
keys.
6. Back
Delete the character currently before the cursor.
When the instrument is in remote mode, press this key to return
to local mode.