PS Engineering PMA6000M Instrucciones de operaciones descargar pdf (Pagina 3)

8 PMA6000-Mono Pilot Guide

While in the CREW mode, pilot and copilot will hear entertainment input

#1 while the passengers may listen to entertainment input #2.

It is also possible to use only one entertainment input device for both en-

tertainment inputs. A switch (DPDT) should be installed between the sin-

gle entertainment device and entertainment input #1. This will allow the

pilot and copilot decide if they hear entertainment while in the Crew

mode.

Internal Recorder System (Option 1, only)

The recorder function is automatic. Pressing the momentary switch will

cause the last message to play (incoming radio and transmit sidetone).

This will be heard in the pilot headset only. To hear older messages, push

the playback button repeatedly to “back up” the recorder, until the desired

message is heard.

The recorder is a continuous loop, and newest ones will overwrite the old-

est messages. The IRS has an internal squelch that prevents storing ‘dead’

air. A radio signal of more than 1 VRMS is needed to trigger the IRS.

Therefore, if the IRS does not seem to be recording, increase the aircraft

radio volume slightly.

Marker Beacon (PMA6000M, PMA6000M-C)

The optional Marker Beacon Receiver uses visual and audio indicators to

alert you when the aircraft passes over a 75 MHz transmitter.

The Blue lamp, labeled "O," is the Outer Marker lamp and has an associ-

ated 400 Hertz 'dash' tone. The lamp and tone will be

keyed at a rate of two tones/flashes per second when the

aircraft is in the range of the Outer Marker Beacon.

The Amber lamp, labeled "M," is the Middle Marker

lamp and is coupled with a 1300 Hertz tone. It is keyed

alternately with short 'dot' and long 'dash' bursts at 95

combinations per minute.

The White lamp, labeled "A," is the Airway/Inner

marker and has a 3000 Hertz 'dot' tone. The lamp and

tone will be keyed at a rate of six times per second.

The audio from the Marker Beacon Receiver can be heard by selecting the

"M" push-button switch.

A 3-position switch is used to set the receiver sensitivity and to test the

indicator lamps. Use "HIGH" sensitivity initially. This allows you to hear

the outer marker beacon about a mile out. Then select the “LOW” sensitiv-

ity to give you a more accurate location of the Outer Marker. The momen-

tary down switch position is labeled "TEST" and illuminates all three

lamps simultaneously to assure the lamps are in working order.

3 PMA6000 –Mono Pilot Guide

and it be in the "out" position and remove that receiver from the

audio. While selected, the switch will also be annunciated by an inter-

nal lamp.

NOTE: In Split Mode, no pushbuttons will be active. The only audio

selected is the com 1 and two, as indicated by their respective lamps.

Speaker Amplifier

The "S" in the push-button section stands for speaker. This

switch will place all selected audio on the cockpit speaker when

this switch is selected. NOTE: with the exception of

unswitched unmuted inputs (Altimeter warning), the speaker

amplifier is not active in the "Split Mode." To reduce power

consumption and internal heat buildup in the avionics stack,

switch off the speaker amplifier when not in use.

Mic Selector Switch (Fail Safe Operation)

Figure 2 Mic Selector

Unit power is turned on and off by the Mic se-

lector switch. In the OFF or "FAIL-SAFE" posi-

tion, the pilot is connected directly to Com 1

allowing transmit and receive capability regard-

less of unit condition. Any time power is removed or turned OFF, the

audio selector will be placed in the fail-safe mode. The first position

clockwise from OFF is COM 1. Both pilot and copilot will be con-

nected to the Com l transceiver. While in the COM 1 or COM 2 mode,

the intercom functions normally. Both the pilot and copilot have

transmit capabilities on the selected transceiver. All hear the selected

audio if the intercom is in the ALL mode. Only the person who

presses their Push To Talk (PTT), will be heard over the aircraft ra-

dio. Turning the rotary switch to the COM 2 position will place pilot

and copilot on Com 2.

The PMA6000-Series has an automatic selector mode. Audio from

the selected transceiver is automatically heard in the headsets and

speaker (when selected). You can check this function by switching

from COM 1 to COM 2 and watch the selected audio light on the se-

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