ENSTROM F-28F/280FX RFM SUPPLEMENT 7-1Report No. 28-AC-081 Jan 15/19CHAPTER 7. SYSTEM DESCRIPTION AND OPERATION7-1. General1. The Garmin GTX 335/345 Series Pilot’s Guide,document 190-01499-00, latest revision, containsadditional information regarding GTX systemdescription, control, and function.2. For information regarding operation and display viainterfaced equipment, refer to the applicable GTN seriesnavigator or GPS source equipment pilot’s guide.3. The GTX 345 features include: ADS-B Out Dual-band ADS-B In traffic display output andaural alerting Integration with TAS traffic system FIS-B weather and flight information displayoutput Bluetooth interface provides traffic, weather, andattitude data to a PED Altitude deviation alerting Timers: count up, count down, flight, trip Outside air temperature display Density and pressure altitude display7-2. System Description1. The GTX 345 is located in the lower instrument consoleas shown in Figure 1. A schematic of interfacedequipment is shown in Figure 7-2.2. Power to the GTX 345 is provided via the XPNDR circuitbreaker (3 Amp). Power to the GTX 345 is also providedvia the avionics master (AVI MASTER). The circuitbreaker and switch are located on the instrumentconsole (Figure 7-1).This electronic document is not linked to a subscription for revision control or distribution. Refer to the OptionalEquipment Supplement Publications Status link under the Technical Support Page of the Enstrom Helicopter websitefor the current revision level of the Rotorcraft Flight Manual Supplement.UNCONTROLLED COPY WHEN DOWNOADED OR PRINTED