ST3000 Autopilot
ST3000 Autopilot Service Manual 83004-2 3
Chapter 2. Special Functions
Display test
A display test feature included in ST3000 software checks that the display
assembly has been re-fitted correctly. Display test is switched on by
momentarily pressing the -1° and +10° keys together
The display scrolls all four characters through from 0 to 9 and then displays
each annotation. This sequence continues until either the ‘Standby’ or ‘Auto’
key is pressed or the unit is powered down.
Autopilot type selection
The Autohelm range of cockpit pilots all contain the same software but each
pilot runs a different program. This is contained within the same chip but
needs to be selected as follows:
1. Press the -10° and +1° degree keys until the display shows the pilot type
number (Approximately 5 seconds)
2. Press the -10° and +1° degree keys again until the display flashes the
pilot type number (Approximately 5 seconds)
3. Select the correct pilot type using the +1° and -1° degree keys
4. Save the setting by pressing the -10° and +1° degree keys until the
normal Standby display appears (Approximately 2 seconds)
Note: Changing Autopilot type will clear all calibration settings.
Display of software code
The software code of the pilot can be displayed as follows:
1. Switch the pilot to standby mode
2. Press the Standby key until the display shows P followed by a number.
(Approximately 10 seconds)
The number indicates the version of software fitted, e.g. P 0 6 indicates
Version 6 software
Calibration lockout
To stop access to compass linearisation and calibration functions on the
ST3000 autopilot:
1. Press the -1° and Standby keys for 10 seconds until the displayshows
CAL ON (or CAL OFF)
2. Toggle between CAL ON and CAL OFF using the -1° and +1° keys
3. Store the selected setting by pressing the -1° and Standby keys for 10
seconds, when the control head returns to normal operation.
Any attempt to linearise the compass or enter calibration when the lockout
function is enabled will result in the display showing Cal Off. In this condition
the user cannot change any settings.
