Parameter scanning can also be locked or unlocked using
a host interface such as SSI or USB SNAPI.
To lock parameter scanning using the host interface, store a 4-digit
code within the range of 1-9999 in the Lock parameter. Values outside
this range are ignored. To unlock parameter scanning, store this
code in the Unlock parameter. To persist the lock/unlock status through
a power cycle, make this parameter value permanent.
Parameter values can be changed via host interface commands
even when parameter scanning is locked.
