Garmin GI 275 User Manual

190-02246-10 GI 275 Part 23 AML STC Installation Manual
Rev. 11 Page 1-15
1.2.2.4 Standby Indicator
The GI 275 in a standby configuration displays the same information as the Primary ADI and has the same
requirements as the Primary ADI. A display backup switch is required if installed as an MFD/Standby ADI
or HSI/Standby ADI. Refer to Section 3.2.2 for information.
The Standby ADI will automatically revert to display secondary ADI data in the case of a Primary ADI
failure. The MFD/Standby ADI can display MFD pages and the HSI/Standby ADI can display HSI pages
under normal operating conditions (i.e., when the Primary ADI is functional) in certain aircraft. Refer to
Section 2 for limitations.
NOTE
When the Standby ADI is in reversionary mode, all previously configured MFD or HSI
pages are unavailable. Only the ADI page will be displayed.
The Standby ADI monitors the primary indicator during normal operation. When the standby indicator
senses a discrepancy, it automatically reverts to displaying its secondary ADI data within 1 second.
Additionally, a display backup switch may be required to be installed. When this switch is set to AUTO, the
standby display functions as outlined above. When the switch is set to ON, the standby display will always
display the aircraft’s secondary ADI data whether or not there is a miscompare between the Primary ADI
and standby indicator. MFD/HSI pages are disabled when the switch is set to ON.
Figure 1-6 GI 275 Standby Indicator
GI275
MFD/StandbyADI

[1]
[Attitude,Altitude,Airspeed,andHeading]
GTP59
OATProbe
[7]
Pitot/Static
Plumbing
[2]
BackupGPS
Antenna
[3]
OR
Analog
Mechanical
Coaxial
RS‐232(GMU44B)
RS‐485(GMU44B)
RS‐232(GMU11)
RS‐232
HSDB
PFD
[1]
ARINC429
Traffic/
SVTTraffic
Radar
Altimeter
GMU44B
OR
GMU11
Magnetometer
LRUPower
NAV#1‐2
Standby
Instrument
Magnetic
Compass
[4]
[1]….RefertoSection2forlimitations.
[2]….Requiredco nn ectionfora idingAHRS .
[3]….GPSinterfaceisrequired.EitherBackup
antennaorexternalGPSsource.
[4].…Mustberetained.
[5]….Reserved
[6]….RequiredwhenStandbyisconfiguredwith
MFDpages.
[7]….TheOATsensorisnotarequiredinterface
forStandbyADIunits.
[8]…..AbackupbatteryisrequiredforStandby
GI275unitsthatdonotutilizean
electricalpowersourcethatis
independ entfromtheaircraft ’sprimary
electricalpowersource.
Requiredandinstalledper
STC
Optionalandinstalledper
STC
NotinstalledperSTC
InternalADAHRS
[ADAHRS]
BackupBattery
(Required)[8]
GPS#1‐2
[3]
Stormscope
HSDBor
RS‐232
HSDBorARINC429
HSDBorAnalogor
RS‐232orARINC429
Reversionary
Switch
[6]
Discrete
GSB15
USB

Garmin GI 275 Specifications

General

Brand	Garmin
Model	GI 275
Category	Avionics Display
Language	English