System Architecture Examples; Figure 1-23 Gi 275 Primary Adi And Twin-Engine Eis - Garmin GI 275 Installation Manual

1.4 System Architecture Examples

The GI 275 can be interfaced with other existing aircraft systems. Refer to Appendix C for equipment compatible with the GI 275. Example installation block
diagrams are shown in Figure 1-23 through Figure 1-28.
Pitot/Static
Mechanical
Plumbing
[8]
GTP 59
Analog
OAT Probe
[2]
Backup GPS
Coaxial
Antenna
[5]
RS‐232 (GMU 44B)
GMU 44B
RS‐485 (GMU 44B)
OR
OR
GMU 11
RS‐232 (GMU 11)
Magnetometer
LRU Power
[3]
USB
GSB 15
GPS #1‐2
[5]
NAV #1‐2
Radar
Altimeter
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 HSDB or
RS‐232 & ARINC 429
ARINC 429
External Flight
HSDB or Analog Analog
Director
or RS‐232 or
ARIN 429
Autopilot
HSDB or
ARINC 429
Discrete & ARINC 429
Required and installed per STC
Optional and installed per STC
Not installed per STC

Figure 1-23 GI 275 Primary ADI and Twin-Engine EIS

RS‐232 (GEA 24)
OR
RS‐485 (GEA 110)
GI 275
Base Unit
HSDB
EIS
#1 Engine
SVT
Traffic
[1]....GI 275 ADAHRS+AP required to drive the
autopilot if equipped.
[2]....GTP 59 interface is optional but recommended.
If the system includes a GI 275 ADI(s), the GTP
59 MUST ONLY be connected to the GI 275
[1]
ADI(s). For standalone GI 275 EIS installations,
connect the GTP 59 to the GEA 24/110. If
connected to EIS adapter in twin‐engine
aircraft, only connect to one, not both.
[3]....Required if used as compensated heading
source for HSI.
[4]....Reserved.
[5]....GPS source is required. Either backup
antenna or external GPS source.
[6]....Standby instrument not required for VFR
only aircraft.
[7]....Must be retained.
[8]....Required connection for aiding AHRS.
Engine #1
Inputs [2]
RS‐232 (GEA 24)
GEA 24/110
OR
RS‐485 (GEA 110)
GI 275
Base Unit
HSDB
EIS
#2 Engine
Standby Instruments
Standby
Attitude
[6]
Magnetic
Compass
[7]
GI 275 Part 23 AML STC Installation Manual
Engine #2
Inputs [2]
GEA 24/110
Standby
Airspeed
[6]
Standby
Altimeter
[6]
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