B&G H2000 Pilot *DISCONTINUED* - Manual (Page 139)

HB-0844-04
5-22
When MEAN is selected, the present heading is compared with a continually
updated mean heading and displayed graphically and numerically as
degrees to port or starboard. This will give the trend to right or left of the
average heading. Hence, if the heading fluctuates to port and starboard but
with a bias to port, then the net trend to port will be displayed. Similarly for
starboard.
The Instantaneous Rate of Turn is selected by pressing the Scroll Down
Key when the Rate of Turn function is selected on the Halcyon Display.
When this function is selected the display will change to show DEG/S
indicating rate of turn in degrees per second. The centre bar graph will now
show the instantaneous rate of turn to port or starboard with the numerical
value displayed below.
Note
This is a useful feature when calibrating the Halcyon 2000 Compass where it
is necessary to maintain a steady rate of turn.
5.10
EXPANSION PROCESSOR
5.10.1 The Expansion Processor
The Expansion Unit can be connected to the Hydra 2000 System via the
Fastnet to drive four extra analogues (meters 5,6,7 and 8), and provide extra
linear inputs.
A new menu automatically appears on all FFD’s called EXPAND when an
Expansion Processor is added to the system. Up to twelve linear functions
may be displayed numbered LINEAR 5 to LINEAR 16. Initially only LINEAR
5 is shown. A linear function by default shows a number between 0,
representing 0 volts on its input and 1000 representing 6.5 volts on its input.
The voltage change is assumed to be linear in relationship. Hence an
external sensor, for example a load cell giving a linear change in voltage as
the load increases, may be connected to a linear input.
LINEAR 5 has four calibration values, other linear functions have three
calibration values found by selecting CALBRATE on the appropriate linear
function.