2 ST60 Compass Instrument Owner’s Handbook
Pointer
In locked mode, the analog pointer shows any course error between the current
heading and the locked course, up to a maximum ±30º deviation. In unlocked
mode, the pointer always indicates zero.
Note:
When power is first switched on, the ST60 Compass starts in unlocked mode.
Use with Sea Talk autopilot
If the ST60 Compass instrument forms part of a system which includes a Sea Talk
autopilot operating in Auto, Vane or Track mode, the ST60 Compass instrument is
forced to operate in Auto mode.
In Auto mode the ST60 Compass instrument acts as a slave display to the
autopilot, with the autopilot’s locked heading displayed on the ST60 Compass
instrument digital display and the analog pointer showing the autopilot course
error. In this mode, all ST60 Compass instrument key functions, except
illumination, are disabled.
1.2 Normal operation
Use the
Basic operation
and
Using the disp key
flow charts in this Chapter to
operate your ST60 Compass instrument. The flow charts show the sequence of
key presses and displays for the various operating tasks. All key presses called for
in the flow charts are momentary, unless otherwise stated.
The displayed heading is either TRUE or MAG(netic) as indicated by a black
square marker on the digital display, adjacent to the corresponding legend.
The ST60 Compass instrument has three modes of operation:
• Unlocked - displays live course data.
• Locked - displays course data and live course deviation data.
• Auto - displays autopilot course data and live course deviation data.
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