Figure 1-1 Gtx 335 Interface Summary; Gtx 335 Interface - Garmin GTX 335 w GPS Installation Guidance

1.4.1

GTX 335 Interface

The GTX 335 units are panel mounted units that have Mode S with ADS-B Out extended squitter capability.
The GTX 335 units contain an integrated display for normal operation and functionality. It is recommended
to wire uninterrupted aircraft battery power to the GPS keep alive input for the GTX 335 with SBAS/GPS
receivers. This preserves internal SBAS/GPS data between unit power cycles and minimizes the time
required to obtain an initial position fix.
GTX 335 features:
Mode S transponder
ADS-B Out capability
Internal GNSS receiver
Optional GAE pressure sensor module
Entry of squawk code and flight ID
Show squawk code and flight ID
Show pressure altitude
Show outside air temp
Show density altitude
Show flight timers
Audio output
TIS-A traffic output to a compatible display
The transponder provides an ADS-B Out failure message to alert that the unit has a degraded ADS-B
s y s t e m . R e f e r t o figure 1-1 for GTX 335 interfaces.
Optional Interfaces
Audio Panel
Squat Switch
Temperature
External Ident
2 nd
Air Data Source
Keep Alive Input
The following provides detail regarding the panel function of the GTX 335. Refer to GTX 3X5 Pilot's Guide
or GTX 33X and GTX 3X5 ADS-B Maintenance Manual for more information about the controls and their
functions.
190-00734-17
Rev. 1
Bottom Antenna
GTX 335
Legend
New LRU Existing LRU

Figure 1-1 GTX 335 Interface Summary

Required Interfaces
GPS Antenna
Altitude Source
GTX 335 w/GPS Installation Guidance
OR
Garmin Altitude
Encoder
Power/Ground
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