Garmin GTX 32 Installation Manual - Page 28

3.7.3 Operation/Performance Checkout CAUTION If the unit is removed from the aircraft and operated, always connect J3272 to an antenna or a 50 Ω, 5-Watt load. Verify proper operation of the transponder by testing as specified in Appendix F of 14 CFR, Part 43, to AC 43-6B, and/or other appropriate regulations. The test is typically done as a ramp test using a transponder ramp test set, such as the TIC TR-210, IFR ATC-600A or other suitable transponder test set. Self Test Verify that the unit does not display a failure indication when turned on. Altitude Input Verify that the displayed altitude matches the altimeter pressure altitude (at 29.92). External Inputs If the external ident or standby inputs are connected, verify operation by: a) Verify that the unit goes to standby when the external standby input is pulled low. b) Verify that the ident indication turns on when the external ident button is pressed (must be in the "ON" or "ALT" modes). 3.7.4 Performance (Ramp) Test After installation, the transponder should be tested as specified in 14 CFR Part 43 Appendix F, AC 43-6B, and other appropriate regulations. The test is typically done as a ramp test using a transponder ramp test set, such as the IFR ATC-600A or TIC TR-210. The ramp test includes checks as follows: a) Reply Frequency b) Suppression c) Receiver Sensitivity d) Reply RF Output Power e) Altitude Reporting 3.8 Continued Airworthiness Test according to Title 14 CFR §§ 91.411 and 91.413 as well as Part 43 Appendix F. Other than for regulatory checks, maintenance of the GTX 32 is 'on condition' only. Aircraft covered under the GTX 32 STC AML should use ICA document number 190-00303-63. Page 3-6 Revision F GTX 32 Installation Manual 190-00303-60