PS Engineering PMA7000M-S Installation Manual User Manual

Page 18

PS Engineering

PMA7000M-S Series Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-070-0012

Page 2-11

Rev. 12, Sept. 2000

2.10 Post Installation Checkout

After wiring is complete, verify power is ONLY on pin 20 of the J1 (bottom connector), and airframe
ground on bottom connector pin Z. Failure to do so will cause serious internal damage and void PS Engi-
neering's warranty.

2.11 Unit Installation

To install the PMA7000M-S, gently slide the unit into the mounting rack until the hold-down screw is en-
gaged. While applying gentle pressure to the face of the unit, tighten the 3/32" hex-head in the center of the
unit until it is secure. DO NOT OVER TIGHTEN.

W a r n i n g : D o n o t o v e r - t i g h t e n t h e l o c k d o w n s c r e w w h i l e i n s t a l l i n g t h e u n i t i n t r a y .

Internal damage will result.

2.11.1 Operational Checkout

NOTE: The IntelliVox® is designed for ambient noise levels of 80 dB or above. Therefore some clipping
may occur in a quiet cabin, such as without the engine running, in a hangar. This is normal.

1. Apply power to the aircraft and avionics.

2. Plug headsets into the pilot, copilot, and occupied passenger positions.

3. Verify fail-safe operation by receiving and transmitting on com 1 from the pilot position, with the audio

panel power off. The Com audio will be present in the right ear cup only.

4. Switch on the unit by pressing the volume (VOL) knob.

5. Check intercom operation.

6. Rotate the Mic Selector Switch to the Com 1 position.

7. Verify that the Com 1 button lights. Verify that the green transmit LED (Light Emitting Diode) near the

mic selector is not illuminated. If the LED is on, stop testing and troubleshoot the microphone PTT in-
stallation.

8. Verify proper transmit and receive operation from the copilot position, noting that the copilot PTT

switch allows proper transmission on the selected transceiver.

9. Verify that pushing the C

2 button causes the button to illuminate, and the Com 2 receiver to be

heard. Verify operation on Com 1 from the pilot position.

10. Repeat for Com 2 and Com 3, (if installed).

11. Rotate the mic selector switch to the C

1/2 position. Verify that the pilot communicates on Com 1

and the copilot on Com 2.

12. Rotate the mic selector switch to the C

2/1 position. Verify that the pilot communicates on Com 2

and the copilot on Com 1.

13. Rotate the mic selector switch to the

TEL

position. Verify that the pilot headset is connected to the cel-

lular telephone system (if installed). Verify that by using the pilot side PTT, the pilot can transmit on
Com 1. The copilot has no transmit capability in TEL mode.

14. Verify proper operation of all receiver sources by selecting them using the button. Note that the button

for the receiver sources stays in, and the button illuminates to show which source is in use.

15. Push in the SPR button. Verify that all selected audio is heard in the cockpit speaker. Verify that the

audio mutes when the mic is keyed.

16. Verify that the LED in the lower right side illuminates when either push to talk is keyed.

17. Verify proper Intercom system operation in the A

, I

and C

REW

modes (see Table 3-1).

18. 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 equipment
on the aircraft.