Revision 4 - December 17,1998 Ryan TCAD 9900 Series Page 4-3
4.4 RAMP TEST
This test checks the function of the TCAD, and confirms proper operation of the host
transponder and altitude encoder with TCAD on.
4.4.1 RAMP TEST SETUP
A. Place the aircraft in an area where signal reflections can be minimized, and
place the transponder test set in position to interrogate the host transponder.
B. Set the transponder test set for Mode A/C and interrogate the transponder.
C. Verify proper operation of the host transponder.
4.4.2 RAMP TEST, SELF TEST FUNCTION
CAUTION: Check power and wiring before applying power.
After applying power to the aircraft, turn on all avionics. Then press the Power switch on
the TCAD. After initialization and adjusting the altimeter setting, the Display will show
field elevation ±100 feet and "SRCHNG" (See Figure 3-1). "G" will appear in the lower
right cell, indicating TCAD operation in the Ground Mode.
A. Perform the test in Paragraph 4.3.2 in the aircraft.
B. Verify continued proper operation of the transponder and encoder.
C. Depress the TEST buttons (DATA and ENRT), interrogating the transponder.
D. After a short processing time, TCAD will show the following sequence:
1. Testing Remote.
2. The Alert light illuminates (if installed) and the word “testing” is
generated in the audio system.
3. SYS CHK: OK
4. COM LINK 100% (should be 95% or greater)
5. Testing Display.
6. The Display will then show the software versions.
NOTE: Steps A. through D. can be conducted while flying.
E. Perform a complete encoder correlation and transponder test in accordance
with the equipment manufacturer's instructions, to verify proper operation of
the encoder and transponder with TCAD operating.
To Next Page
Loading...
Need help?
General
