Gmu 44; Gtx 330/330D (Optional); Gtp 59; Gsr 56 - Garmin G500 Pilot's Manual

1.1.5

GMU 44

The GMU 44 magnetometer senses the earth' s magnetic field. Data is sent to
the GRS 77 AHRS for processing to determine aircraft magnetic heading. This
unit receives power directly from the GRS 77 and communicates with the GRS
77 using a RS-485 digital interface.
1.1.6

GTX 330/330D (Optional)

The GTX 330/330D is a solid-state transponder that provides Modes A, C,
and S functions. The transponder provides traffic information to the display
through an ARINC 429 digital interface.
NOTE: GTX 33/33D can also be used to display traffic information on the
GDU 620.
1.1.7

GTP 59

The GTP 59 temperature probe provides Outside Air Temperature (OAT)
data to the GDC 74A.
1.1.8

GSR 56

The GSR 56 is an Iridium
calls, aircraft position reporting, and world wide weather products.
190-01102-02 Rev. E
Figure 1-6 GMU 44 Magnetometer
Figure 1-7 GTX 330/330D Mode S Transponder
Figure 1-8 GTP 59 Temperature Probe
satellite transceiver that supports voice telephone
®
Garmin G500 Pilot's Guide
1-5