2 ST40 Bidata Instrument Owner’s Handbook
Selecting where speed and depth information is displayed
D4733-2
DEPTH
SPEED
SPEED
DEPTH
1.2 Operating procedures
Operating information is presented in flow chart form. The flow charts
show the various operating screens and key presses necessary to carry
out the various instrument functions. Key presses are momentary unless
otherwise stated. Note that:
• Up/down depth-trend arrows are displayed, if the seabed is rising or
falling at a significant rate.
• The minimum depth reading is reset to zero at power up.
• The maximum speed reading is reset to zero at power up.
• The average speed reading is reset to zero at power up.
• The Log screen shows the total distance covered by the vessel since
the ST40 Bidata instrument was fitted.
• The trip reading is reset to zero at power up.
Display action
During normal operation (see Normal operation flow charts), the
Speed, Depth and Water temperature screens are permanent
screens, i.e. once one of these is selected, it will remain until another
screen is manually selected. All other screens are temporary and after
5 seconds, will time out to the permanent screen which was last
displayed for 5 seconds or more.
Silencing alarms
To silence an alarm (see the Alarms section, later in this chapter),
momentarily press any one of the instrument keys.
159_2c01.p65 01/05/01, 15:142
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