Garmin GI 275, Pilot'S Manual

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Garmin GI 275 Pilot's Guide 190-02246-01 Rev. A
40
Flight Instruments
System Overview
Flight Instruments
EIS
Navigation
Hazar
d A
voidance
Autopilot
Additional F
eatur
es
Appendices
Index
Should the magnetometer fail, and GPS data is valid, ground track data is displayed instead
of heading. Track data is annunciated as "TRK" and the indications are in magenta.
Ground Track Data on the 'ADI', 'HSI', and 'HSI Map' Pages
'HSI' Page 'ADI' Page 'HSI Map' Page
DEVIATION INDICATORS
NOTE:
An external navigator (e.g., NAV/COM Transceiver and/or the GTN or GNS
Series Units) must be configured to receive glideslope and/or glidepath vertical
deviation indications.
Up to two external sources for GPS and VOR/LOC data may be configured as navigation
sources (GPS1, GPS2, VOR/LOC1, VOR/LOC2). If an external GPS source is not configured
or all external GPS sources have failed, the deviation indicators can display VFR GPS data
(VGPS). See the Navigation section for details. Color indicates the current navigation source:
magenta (for GPS) or green (for VOR and LOC). The full-scale limits for the CDI are defined
by a GPS-derived distance when coupled to GPS. When the MFI is receiving VOR/LOC or GPS
data (GPS must be in OBS Mode), adjustments to the course may be made on the 'CDI' Page,
'HSI' Page, or 'HSI Map' Page. The course may also be adjusted using the external navigator,
if configured. Refer to the current pertinent flight manual for the external navigator in use for
more information.
When coupled to a VOR or localizer (LOC), the deviation bar has the same angular limits
as a mechanical CDI. If the deviation bar exceeds the maximum deviation on the scale while
coupled to GPS, the crosstrack error (XTK) is displayed.
When valid navigation data is available, the 'CDI', 'HSI', and 'HSI Map' Pages always show
deviation information. On the 'ADI' Page, lateral and vertical deviation indicators are not
enabled by default. If deviation indicators on the 'ADI' Page are enabled before unit power-
off, deviations will be displayed after unit restart. Units configured as a Standby HSI cannot
disable deviation indication display on the 'ADI' Page.
Enabling/disabling deviation display on the 'ADI' Page:
1)
From the 'ADI' Page, open the menu and select
Options > NAV Options
.
2) Select the CRS Devs Button to toggle displaying lateral and vertical deviation
information.