Garmin 2006T Betriebsanweisung PDF herunterladen (Seite 26)

Garmin G950 Pilot’s Guide for the Tecnam P2006T

190-01146-00 Rev. A14

SYSTEM OVERVIEW

SYSTEM

OVERVIEW

FLIGHT

INSTRUMENTS

EIS

AUDIO PANEL

& CNS

FLIGHT

MANAGEMENT

HAZARD

AVOIDANCE

AFCS

ADDITIONAL

FEATURES

APPENDICESINDEX

GPS sensor annunciations are most often seen after system power-up when one GPS receiver has acquired

satellites before the other or one of the GPS receivers has not yet acquired an SBAS signal. While the aircraft

is on the ground, the SBAS signal may be blocked by obstructions causing one GPS receiver to have difﬁculty

acquiring a good signal. Also, while airborne, turning the aircraft may result in one of the GPS receivers

temporarily losing the SBAS signal. If no failure message exists, check the GPS Status Page and compare the

information for GPS1 and GPS2. Discrepancies may indicate a problem.

GPS RECEIVER STATUS

The GPS solution type (ACQUIRING, 2D NAV, 2D DIFF NAV, 3D NAV, 3D DIFF NAV) for the active

GPS receiver (GPS1 or GPS2) is shown in the upper right of the GPS Status Page. When the receiver is

in the process of acquiring enough satellite signals for navigation, the receiver uses satellite orbital data

(collected continuously from the satellites) and last known position to determine the satellites that should be

in view. ACQUIRING is indicated as the solution until a sufﬁcient number of satellites have been acquired

for computing a solution.

When the receiver is in the process of acquiring a 3D differential GPS solution, 3D NAV is indicated as the

solution until the 3D differential ﬁx has ﬁnished acquisition. Satellite-Based Augmentation System (SBAS)

status should be indicated as INACTIVE at this point. When acquisition is complete, the solution status

changes to 3D DIFF NAV and SBAS becomes active.

•SBASSelection(SBAS Softkey is pressed)

In certain situations, such as when the aircraft is outside or on the fringe of the SBAS coverage area, it may

be desirable to disable WAAS or MSAS (although it is not recommended). When disabled, the SBAS ﬁeld in

the GPS Status box indicates DISABLED. There may be a small delay for the GPS Status box to be updated

upon WAAS and MSAS enabling/disabling.

Disabling WAAS or MSAS

1) Select the GPS Status Page.

2) If necessary, press the SBAS Softkey.

3) Press the

FMS

Knob

, and turn the large FMS Knob to hightlight ‘MSAS’ or ‘WAAS’.

4) Press the ENT Key to uncheck the box.

5) Press the FMS Knob to remove the cursor

Figure 1-14 Enable/Disable SBAS

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