1 OPERATION GENERAL INFORMATION 1.1 SCOPE This section provides detailed operating instructions for the PS Engineering PMA7000B Audio Selector Panel/Intercom Systems. Please read it care- fully before using the equipment so that you can take full advantage of its capabilities.
1.3 Microphone (XMT) Selection (All models) There are six pushbuttons associated with the communications transceivers. The lower buttons control which transceiver is selected for transmit. The PMA7000B gives priority to the pilot’s PTT. If the copilot it transmit- ting, and the pilot presses his PTT, the pilot’s microphone will be heard over the selected com transmitter.
1.4 Audio Selector (All models) Receiver audio is selected through seven momentary, push-button, backlit switches. You will always hear the audio from the transceiver that is se- lected for transmit. The users can identify which receivers are selected by noting which of the green switch LEDs are illuminated.
Split mode, particularly on adjacent frequencies. PS Engineering makes no warranty about the suitability of Split Mode in all aircraft conditions. Note: Split Mode does not turn off other (Nav, ADF, etc.) selected audio to pilot.
Although no damage to the unit will occur, all passengers will lose one channel, unless they switch to the “MONO” mode on the headset. PS Engineering modifies headsets to add stereo capability, using high- fidelity speakers. Contact factory for details.
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transmissions. : (Middle Position): All parties will hear the aircraft radio and inter- com. Crew will hear Entertainment 1, passengers will hear Entertainment 2. During any radio or intercom communications, the music volume automati- cally decreases. The music volume increases gradually back to the original level after communications have been completed.
1.6.4 Entertainment Input The audio selector panel has provisions for two separate entertainment in- put devices. Music 1 feeds the pilot and copilot positions, music 2 feeds the passenger positions. They operate independently in the PMA7000B. While in the ISO (Isolate) mode, the copilot will hear Entertainment 1 while the four passengers will hear Entertainment #2.
discrete switches mounted adjacent to the headset jacks. When Com 3 is active in the duplex mode, the TX button will blink about twice as fast as the normal transmit rate. When the intercom is in ALL mode, the pilot can speak on the phone only if the Com 3 is selected for transmit (Com 3 Xmt button activated).
outer marker beacon about a mile out. Then select the “LO” sensitivity to give you a more accurate location of the Outer Marker. The momentary down switch position is marker test, labeled "T/M" and illuminates all three lamps simultaneously to assure the lamps (internal and external) are in working order.
All domestic transportation charges for returning the exchange or repaired unit to the purchaser will be borne by PS Engineering, Inc. The risk of loss or damage to the product is borne by the party making the shipment, unless the pur- chaser requests a specific method of shipment.
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Commercial use is strictly prohibited. For further information contact the Publications Man- ager at PS Engineering, Inc., 9800 Martel Road, Lenoir City, TN 37772. Phone (865) 988- 9800...
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