PS Engineering PMA7000H Installation Manual User Manual

Page 24

PS Engineering

PMA7000H Audio Selector Panel and Intercom System

Installation and Operator’s Manual

200-780-0429

Page 3-5

Rev. 4, Dec 2012

Anytime the PMA7000H is in either the C

1/C

2, C

1/ C

3 ("Split Mode"), the pilot and copilot

intercom is controlled with the ICS button. The passengers will maintain intercommunications, but never

hear aircraft radios.

3.6.3.1 Alternate Intercom Mode (Serial Number beginning with letter “B” and above)

When the PMA7000H is toggled into “Alternate Intercom Mode,” using a switch connected to Bottom

Connector Pin 14 is grounded, the passengers will NOT hear aircraft radios, even in the all mode. They will

be able to converse with the crew. However, when the aircraft radio becomes active, the intercom audio

from the passengers is muted, allowing the crew to focus on the radio.

Mode

Pilot Hears

Copilot Hears

Passenger Hears

Telephone

Comments

Isolate

A/C Radios

Pilot Sidetone

(during radio transmis-

sion)

Entertainment 1 is

Muted

Copilot and passenger

intercom

Entertainment #1

Passenger and Copilot

intercom

Entertainment #2

“Phone Booth” mode

Pilot has exclusive use of

the telephone.

In TEL, Pilot & Copilot con-

nected to Com 1 for PTT TX

and receive. Others hear Tel

if off hook.

This mode allows the

pilot to communicate

without the others both-

ered by the conversa-

tions. Copilot and pas-

sengers can continue to

communicate and listen

to music

All

Pilot

Copilot

A/C Radio

Passengers

Entertainment #1

Copilot

Pilot

A/C Radio

Passengers

Entertainment #1

Passengers

Pilot

Copilot

A/C Radio

Entertainment #2

All have access to phone

through Hook Switch. Pilot

access through TEL switch.

All hear telephone audio if

off hook.

This mode allows all on

board to hear radio re-

ception as well as com-

municate on the inter-

com. Music and intercom

is muted during intercom

and radio communica-

tions

Crew

Pilot

Copilot

A/C Radio

Entertainment #1

Copilot

Pilot

A/C Radio

Entertainment #1

Passengers

Entertainment #2

Pilot and copilot don’t have

phone access, unless mic

sel in TEL. Passengers

have phone through Hook

Switch, Passengers hear

phone audio.

This mode allows the

pilot and copilot to con-

centrate on flying, while

the passengers can

communicate amongst

themselves.

Alternate

Intercom

Mode

Pilot

Copilot

A/C Radio

Passengers (when

radio silent)

Entertainment #1

Pilot

Copilot

A/C Radio

Passengers (when

radio silent)

Entertainment #1

Passengers

Pilot

Copilot

Entertainment #2

All have access to phone

through Hook Switch. Pilot

access through TEL switch.

All hear telephone audio if

off hook.

This mode allows the

crew to hear radio recep-

tion (but not bother the

passengers) as well as

communicate on the

intercom. Passenger

mics are removed from

the crew audio when the

radios are active.

Table 3-2 Intercom Modes

3.6.3.2 Entertainment Input

The audio selector panel has provisions for two separate entertainment input devices. Music 1 feeds the

pilot and copilot positions. They operate independently in the PMA7000H. The volume control does not

affect the music level.
While in the ISO (Isolate) mode, the copilot will hear Entertainment 1 while the four passengers will hear

Entertainment #2. The pilot will hear entertainment 1, at a muted level. In normal operation, whenever a

person speaks, or if the aircraft radio becomes active, the music will automatically mute and then will grad-

ually return to the original listening level when the intercom or radio conversation ceases.
When in the A

mode, pilot and copilot will hear Entertainment 1 input while all passengers will hear the

Entertainment 2 source. While in the C

REW

mode, pilot and copilot will hear entertainment input #1 while

the passengers may listen to entertainment input #2.