Install Manual Part 3
Table Of Contents
- CHAPTER 4- MAINTENANCE
- APPENDIX A - SIGNAL & CABLE CHARACTERISTICS
- APPENDIX B - CHECKOUT USING TCAS-201 RAMP TEST SET
- APPENDIX C - CHECKOUT USING T-49C FLIGHTLINE TESTER
- APPENDIX D - USING THE TERMINAL DEVICE
- APPENDIX E - CHECKOUT USING ALTERNATE DISPLAY
SKY497
Installation Manual
E-5
Rev. C
E.3.1 Self Test
1. Turn SKYWATCH OFF and then:
a. Make sure the aircraft's transponder is in the STANDBY, ON, or ALT mode.
NOTE
After power up, it may take a couple of minutes for the altitude encoder to
return a valid altitude to the transponder and SKY497.
b. If installed, power up the radio altimeter.
c. Make sure all compass/HSI flags are cleared from the aircraft's instruments.
2. Turn SKYWATCH ON.
3. After approximately thirty seconds, observe the standby screen and then perform the SKYWATCH
self test (see alternate display operating instructions on how to perform self test).
4. If SKYWATCH passes the self-test, the system will return to the standby screen and the voice
message, "TRAFFIC ADVISORY SYSTEM TEST PASSED," will be enunciated over the cockpit audio
system.
5. If you do not hear the voice message or if the voice message is of insufficient volume:
a. Check headphones/speaker and aircraft audio panel switch settings.
NOTE
Audio levels are adjusted at the aircraft audio panel. There is no internal
audio adjustment.
b. Check audio connection to the TRC:
1) 600-ohm audio systems should be connected to P1-92 (AUDIO_H).
2) 150-ohm audio systems should be connected to P1-91 (AUDIO_L).
3) Audio common is connected to P1-90 (AUDIO_C).
NOTE
Audio output from the TRC is transformer isolated.
6. If SKYWATCH fails the self-test:
a. The fail screen will be displayed.
b. The voice message, "TRAFFIC ADVISORY SYSTEM TEST FAILED", will be enunciated over the
cockpit audio system.
c. Refer to the fault isolation procedures and error messages in Chapter 4.