trig TMA44, Руководство по установке

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TMA44 Audio Panel Installation Manual 7 November 2017
01849-00 Issue AB
______________________
Trig Avionics Limited 21
9. Verify that pushing the
COM2
button causes the LED near the button to
illuminate, and the COM2 receiver to be heard. Verify operation on
COM1 from the pilot position.
10. Repeat for COM2
11. Press and hold the XMT1 button. While holding the XMT1 button, press
the XMT2 button. This places the unit in “Split Mode”; verify that the
pilot can transmit and receive on COM1, while the co-pilot transmits and
receives on COM2.
12. Verify proper operation of all receiver sources by selecting them using the
appropriate button. The button illuminates to show which source is in use.
13. Push the speaker button. Verify that all selected audio is heard in the
cockpit speaker. Verify that the audio mutes when the mic is keyed.
14. Verify that the appropriate LED in the lower button row blinks when
either push to talk is keyed.
15. Verify proper Intercom system operation in the
A
LL
, I
SO
and
C
REW
modes (see Section 8.12).
16. Verify that the audio selector panel system does not adversely affect any
other aircraft system by systematically switching the unit on and off,
while monitoring the other avionics and electrical equipment on the
aircraft.
6.3 Marker Checkout
1. Connect a ramp generator at the antenna end of the marker coax. With the
unit under test in HI sensitivity, verify that a 160

V, modulated 95%
with 1300 Hz, signal will illuminate the amber (M) marker light, and that
marker audio is present in the headphones when the Marker Audio
(MKR) push-button has been depressed. Select the button with the
speaker symbol to verify marker audio availability on the cabin speaker.
Verify that the white (I) and blue (O) lights will illuminate within

3dB
of the amber lamp, with 3000 HZ and 400 Hz applied, respectively.
2. Repeat with the unit in LOW sensitivity, with 430

V applied.
3. Connect the marker antenna and verify proper operation.