Revision 4 - December 17,1998 Ryan TCAD 9900 Series Page 3-9
3.12 SETTING TONE OPTIONS
Depress the MUTE button twice. The Tone Volume can be adjusted using the up or
down buttons. Depress MUTE again to adjust MUTE time duration. Depressing the
MUTE button again instructs TCAD to use voice or tones for audio traffic alert. A final
press of MUTE will return the TCAD to collision alert operation.
If no button is pressed for 8 seconds, the TCAD will automatically return to collision alert
operation. The sequence for tone related set up is as follows:
Press MUTE twice: Adjust tone volume.
Press MUTE again: Adjust Mute Duration, ten second intervals.
Press MUTE again: Enable or disable Voice for traffic alert (9900A and 990B).
Press MUTE again: Return to operation
3.13SETTING THE ALTITUDE ALERT
Press the s and t buttons simultaneously. The previously programmed altitude will be
displayed. Use the up and down buttons to set the selected altitude. Pressing the s and
t buttons again will engage the Altitude Alert. See the Pilot's Handbook for more
information.
3.14 TCAD FAULT DISPLAYS
If connections between the Processor and Display are broken or corrupted, LINK
FAILURE is displayed. Stars (*****) in place of the altitude display indicates TCAD is
not receiving valid altitude information.
3.15 PILOT INITIATED TEST
Activate this test by pressing the DATA and ENRT buttons. The following is displayed:
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.
Pressing any button can advance the Display images more quickly.
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