Figure 1-25 Gi 275 Primary Adi, Hsi, And Mfd - Garmin GI 275 Installation Manual

GTP 59
Analog
OAT Probe
[2]
Backup GPS
Coaxial
Antenna
[5]
RS‐232 (GMU 44B)
GMU 44B
RS‐485 (GMU 44B)
OR OR
RS‐232 (GMU 11)
GMU 11
Magnetometer LRU Power
USB
GSB 15
Standby Instruments
Standby
Standby
Airspeed
Attitude
[3]
Magnetic Standby
Compass Altimeter
[6]
190-02246-10
Rev. 11
Internal ADAHRS
[ADAHRS or ADAHRS + AP units]
GI 275
Primary ADI
[Attitude, Altitude, Airspeed, and Heading}
Backup Battery
(Optional)
HSDB or
Discrete & ARINC 429
Analog
HSDB or RS‐232
[3]
HSDB or Analog or
RS‐232 or ARINC 429
Required and installed per STC
Optional and installed per STC
[3]
Not installed per STC

Figure 1-25 GI 275 Primary ADI, HSI, and MFD

HSDB [4]
GI 275
Base Unit
HSI
HSDB
Backup Battery
(Optional)
Autopilot
HSDB or RS‐232
[1]
External Flight
HSDB or Analog or
Director RS‐232 or ARINC 429
GPS #1
[5]
NAV #1
[1]....GI 275 ADAHRS+AP required to drive the autopilot
if equipped.
[2]....Optional but recommended.
[3]....Standby instruments not required for VFR only
aircraft.
[4]....If HSDB ports are available, this connection is
optional as an HSDB failure redundancy.
[5]....GPS source is required. Either backup antenna or
external GPS source.
[6]....Must be retained.
[7]....Required connection for aiding AHRS.
Pitot/Static
Mechanical
Plumbing
[7]
GI 275
Base Unit
HSDB
MFD
Backup Battery
(Optional)
RS‐232
GPS #2
ARINC 429
NAV #2
HSDB or
ARINC 429
HSDB
GI 275 Part 23 AML STC Installation Manual
Stormscope
Radar
Altimeter
Traffic
Weather
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