Hall Research SC-1080H - Manual (Page 13)

Multi Input Digital Scaler with Audio
11
3.5 Front Panel Lockout
Under certain circumstances it may be desirable to disable the front
panel controls (e.g. to prevent unauthorized or accidental changes to the
settings while the unit is in use). To disable the front panel controls you
must use the RS-232 port (see Serial Control section for details).
It is still possible to remove the lockout from the front panel by
performing a full factory default reset operation!
To reset to the factory default settings press the RESET button on the IR
remote control for 5-10 seconds. The SC1080-H led’s will turn on while
the reset button is depressed and turn back off when the software reset
has completed.