Flymaster NAV, Руководство пользователя

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Altitude can also be set from the GPS. Below the QNH you will find a Get from GPS field which
can be set to Yes No or Auto . Adjusting this value to Yes will make the NAV take the altitude
from the GPS and adjust the altitude accordingly. The Yes is not stored in the setting, since it is
a one time only operation.
The Get from GPS can also be set to Auto , with this value being stored in the settings. When
Auto is selected, the NAV will automatically set the altimeter to the GPS altitude when the pdop
value is lower than the previous one.
Note that position dilution of precision (pdop) gives you an indication of how reliable the GPS
altitude is at the moment. The lower the pdop value the more accurate the position fix.
Figure 13.2: Set Altimeter
13.2 Time
The Time page allows the user to set the vario integration time, track log parameters, and the
Universal Coordinated Time ((UTC) offset). (Figure 13.3 )
Figure 13.3: Timing Parameters
The current firmware version supports two interval related parameters the Vario Integrator and
Track Interval .
13.2.1 Vario Integrator
The Integrated vario is calculated by integrating the vertical speed during a period of X seconds
defined by this value. In the example of Figure
13.3 , the integration period is 10 seconds (default
value).
13.2.2 Track interval
During flight the NAV stores a track log point every track interval seconds. Track recording starts
automatically when a speed of 5km/h is exceeded and the NAV has a 3D GPS fix. However, when
a task is active the NAV will store a track log point immediately as it enters a turn point cylinder,
Goal, or Start open. See Section
10.3 about track log memory capacity.
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