R2 May. 2002
8
PMA7000MS-Option CD Pilot Guide
A
LL
:
(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.
C
REW
(Down Position): Pilot and copilot are connected on one intercom
channel and have exclusive access to the aircraft radios. They may also lis-
ten to Entertainment 1. Passengers can continue to communicate with them-
selves without interrupting the Crew and also may listen to Entertainment 2.
Anytime the PMA7000MS-CD is in either the C
OM
1/C
OM
2, C
OM
1/C
OM
3 ("Split Mode"), the pilot and copilot intercom is controlled with the ICS
button. The passengers will maintain intercommunications, but never hear
aircraft radios.
1.6.4
Entertainment Input
The audio selector panel has provisions for two separate entertainment in-
put devices. The PCD7100-R remote CD player is usually installed as Mu-
sic 1, and feeds the pilot and copilot positions. They operate independently
in the PMA7000MS-CD. The music volume control affects the PCD7100-R
music level only in the pilot and copilot positions.
While in the ISO (Isolate) mode, the copilot will hear Entertainment 1 while
the four passengers will hear Entertainment #2. The pilot will hear enter-
tainment 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 gradually return to the original listening level when the
intercom or radio conversation ceases.
When in the A
LL
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.
It is also possible to use just the PCD7100-R as entertainment input device
for both entertainment inputs. However, we suggest that a switch (DPDT)
be installed between PCD7100-R entertainment input #1. This will allow
the pilot to direct the music as desired.
1.6.4.1
Soft Mute and Soft Mute inhibit
The Soft Mute feature assures that the aircraft radio transmissions will not
be missed due to entertainment playing. When there is radio reception or
intercom conversation, the music level is dropped to a low, or background
level. When the radio or intercom traffic ceases, the level gradually returns
to normal.
The front panel ICS switch controls muting of entertainment source #1 (for
R2 May. 2002
5
PMA7000MS Option CD Pilot Guide
1.4.2
Key “Click”
The PMA7000MS-CD is equipped with a “click” function that provides an
aural feedback to the user in addition to the tactile button push. This sound
can be enabled or disabled by simultaneously holding the COM 1 and COM
2 buttons in for at least 5 seconds. Any person hearing the radios will also
hear the key click.
Allow at least 20 seconds between turning the key click on and off.
1.5
Split Mode
The split mode can be activated at any time by pressing the desired combi-
nation of XMT buttons. For instance, to activate a Com 1/Com 2 split, press
and hold the com 1 button, and then press the Com 2 button while holding
the Com 1 button. This places the pilot on Com 1 and the Copilot on Com
2. The split modes are Com1/Com2 and Com 1/Com 3. The pilot will al-
ways be on Com 1. Pilot on Com 2 or Com 3 and copilot on Com 1 is not
possible.
Split mode for Com 3, in normal (not TEL/Duplex) is possible with pilot on
Com 1, copilot on Com 2 or 3
Note
:
Due to the nature of VHF communications signals, and the
size constraints in general aviation aircraft, it is probable that
there will be some bleed-over in the 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
.
However, the copilot will only hear the selected communications receiver.
1.5.1
Split Mode ICS
In split mode, the pilot and copilot are usually isolated from each other on
the intercom while simultaneously using their respective radios. Depressing
the
ICS
button in Split Mode will activate VOX intercom between the pilot
and copilot positions. This permits intercommunication when desired be-
tween the crew. Pressing the ICS button again disables this crew intercom
function.
