PS Engineering
PMA8000B-MP3Avidyne Version (-0403) Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0403
Page 2-13
Rev. 4, Jan. 2011
13.
Push the SPR 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 Table 3-1).
16.
Verify that the audio selector panel system does not adversely affect any other aircraft system by sys-
tematically switching the unit on and off, while monitoring the other avionics and electrical equi p-
ment on the aircraft.
2.12.3 Marker Checkout
1.
Connect a ramp generator at the antenna end of the marker coax. With the unit under test in HI sensi-
tivity, 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 (M) pu sh-
button has been depressed. Select SPR for speaker 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
Volts applied.
3.
Connect the marker antenna and verify proper operation.
2.12.4 TEL Checkout
Press the TEL button. Verify that the pilot headset is connected to the cellular telephone system (if i n-
stalled). Verify that by using the pilot side PTT, the pilot can transmit on the other selected radio (Com 1
or Com 2). The telephone function will place any person heard by the pilot on the intercom, also heard on
the telephone.
2.12.5 Internal Recorder Checkout
With headset plugged into pilot’s side jacks, tune COM 1 to local frequency, such as FSS or ATC ground.
Select Com 1 on mic selector switch, and record several incoming radio transmissions.
Press the Com receiver pushbutton that corresponds to the selected radio transmitter and
hold
for ap-
proximately one second. This action will then automatically play back the last recorded message. Press
and HOLD the button again to stop the play back, and then momentarily press again to play prior me s-
sages.
This audio should appear in the pilot and copilot headsets, and only be incoming transmissions from the
transceiver selected in the mic select switch. Depress the audio panel or yoke mounted playback switch,
and verify that messages play, in the order received. Repeat for COM 2. The playback will be stopped by
new audio on the selected com. The message can be replayed from the beginning, and audio received du r-
ing the playback will not be stored.
2.12.6 Function Button Checkout
While listening to the pilot’s headset, press and hold the “Mon 1” button. Press the Mon 2, MUTE and
SPR buttons, verifying that the annunciations play back in pilot headset. See operation section for info r-
mation. Incoming audio on selected com will stop the audio.
2.12.7 MP3 Player Checkout
Refer to Section 3.11 of this manual for detailed instructions on MP3 operation. A quick test can be con-
ducted using the initial welcome message stored at the factory. Press and hold the MON 1 button, and
press the NAV 1 button. MP3 Power ON will be heard in the headset. The welcome message should begin
to play automatically.
If it does not, verify that the intercom is in “ALL” mode, and that the TEL is deselected (no green LED).
