PS Engineering PM1000II Operator And Installation Manual - page 2
PM1000II Specialty Intercom Manual
Page 2
January 2002
Section I General Information
1.1
Introduction
The PM1000II, is a panel mounted, 4-
place monaural intercom system (ICS). Please
read this manual completely before installation
to minimize the risk of damage to the unit and
to become familiar with all the features.
1.2
Scope
This manual contains installation and op-
erational instructions for the following PS En-
gineering units:
Part Number
Description
11906
w/Pilot ISO and Internal Recorder System (IRS)
11908
Same as above w/internal crew function
11909
Push to talk intercom for use in noisy cockpits
1.3
Description
The PM1000II is a 4-place, panel mounted
intercom with individual volume and squelch
controls for the pilot and copilot. The copilot's
squelch control adjusts the trip level of the copi-
lot and passengers.
A front panel mode switch allows the pilot
to select multiple intercom configurations:
"ISO" mode isolates the pilot from the in-
tercom and connects to the aircraft radio. The
passengers can continue to communicate with
each other and listen to entertainment without
distracting the pilot. They do not hear radio com-
munications.
"ALL" mode places all headsets on a party
line. Each one hears aircraft radio, entertainment
and can use the intercom.
“CREW” (11908 only) allows the pilot and
copilot positions to hear the aircraft radios and
use the intercom, while the rear passengers can
have their own intercom conversation without
disturbing the crew. This also activates music 2
input.
The PM1000II has an automatic fail-safe
interconnect to the aircraft radio. If power to the
intercom is disrupted, an internal relay will con-
nect the pilot's headset to the aircraft radio. This
allows continuous radio communications. Note:
The copilot will no longer hear aircraft radio
when power is removed.
The 2-color LED shows green when power is
on and red during radio transmissions. This
functions as a stuck mic indicator.
An auxiliary input is provided, allowing the
pilot, copilot and passengers the option to listen
to music during flight. During intercom or air-
craft radio activity, this music is automatically
muted to allow communications without distrac-
tion. When the activity ceases, the Soft Mute cir-
cuit will gradually return the music to the origi-
nal listening volume.
The "ISO" mode provides uninterrupted air-
craft radio communications for the Pilot. Because
the pilot's intercom volume control does not af-
fect the aircraft radio volume, it is possible to
select various balances of volume level between
the ICS and the aircraft radio while in the ALL
mode. Reducing the intercom volume, the pilot
PM1000II, p/n 11908, Front Panel
January 2002
Page 11
200-124-0100
IRS Playback Schematic (Section 2.2.4)
1A
11-33 VDC
14
1
11920 Sub-D DB-25 Female (Sockets) on unit
To Aircraft Radio
Phone Hi
17
4
Power In
Ground
A/C Radio Phone Audio Hi
A/C Radio Phone Audio Lo
18
5
Pilot Phone Audio Hi
Pilot Phone Audio Lo
Passenger 1
Phones
Passenger 2
Phones
Copilot Phones Hi
Copilot Phones Lo
19
6
20
7
9
Music Jack 1
Pass 1 Mic
Pass 2 Mic
22
21
10
Music Input 1 Hi
Music Input 1 Lo
Pass 1 Mic Audio Hi
Pass 1 Mic Audio Lo
Copilot Mic PTT
Copilot Mic Audio Hi
Mic Audio Lo
Copilot PTT
Pilot Mic PTT
Pilot Mic Audio Hi
Pilot Mic Audio Lo
Aux Mic Jack
Pilot PTT
To A/C Radio Mic Audio Hi
Aircraft Radio PTT
12
25
13
24
23
11
8
Pass 2 Mic Audio Hi
Pass 2 Mic Audio Lo
To Aircraft Radio
Phone Low
AUX Headphone Jack
To Aircraft Radio Mic Audio Lo
Pilot Headphone Jack
Copilot Mic Jack
Pilot Mic
Jack
Aircraft Radio PTT
Aircraft Mic Audio Hi
Aircraft Mic Audio Lo
16
3
Music Jack 2
Music Input 2 Hi
Music Input 2 Lo
15
2
Pass 1 & 2 Phones Hi
Pass 1& 2 Phones Lo
Copilot Headphone Jack
no connection
no connection
TITLE:
9800 MARTEL ROAD, LENOIR CITY TN 37922
NOTES:
1. All wire must conform to
MIL-22759 or 27500.
Minumum 24 gage shielded wire.
2. Use 2-, 3-, and 4-conductor
with shield as indicated.
3. Use insulating washers
on all jacks.
4. Connect shields
at intercom end only
5. AUX headphone and
microphone jacks required.
PM1000II (11908) with CREW and IRS
PM1000II
With Crew p/n 11908
3.5 mm plug