Multiple Station System; Lock Function - Simrad AP25 Manual

Simrad AP25 Autopilot

2.22 Multiple station system

In normal operation control is accessible from every control unit
connected to the AP25 system. One control unit is "active" and
provides the user with access to all functions. All remaining
control units are "inactive" and have no effect on mode changes
or course selection. A single press on any of the mode buttons on
an "inactive" control unit will allow transfer of command and
make it "active".

2.23 Lock function

The "LOCK" function is a safety feature in the AP25 system. It
will disable all control units, including the FU25 Follow-up
lever, except for a single user selected control unit location.
When the "lock" function is in use, no transfer of command can
take place; only the active control unit stays in command.
To enable the "lock" function, make a quick double press on the
STBY button.
The display on the active control unit will first show a
and then the icon will alternate with the mode index.
The "locked" control units in the system will show:
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