When in the programming mode and no buttons have been
pressed for two minutes, the DLCA exits the programming
mode and returns to displaying tension. This menu time-out is
not active once any of the calibration loops have been entered.
The DLCA allows a password to be set which prevents changes
to the parameters or performing a calibration. When locked, all
parameters can be viewed. Only zeroing tension is allowed
while the password has locked the DLCA, unless zeroing has
been locked out.