Pilot Mic Audio Hi
Pilot Mic Audio Lo
Entertainment Input
Music (R)
9800 MARTEL ROAD, LENOIR CITY TN 37922
PM2000 (11915) WIRING DIAGRAM
SHEET OF
Jack Details:
Microphone
Ring (audio)
Barrel
(gnd)
(phone audio RT)
Barrel
(audio gnd)
Stereo Headphone
(phone audio LT)
RING
11-33 VDC
1A
To Aircraft Radio
Phone Audio Hi
TIP
To Aircraft Radio Mic Audio Lo
Aircraft Radio PTT
Aux Mic Jack
To Aircraft Radio
Phone Low
Ground
A/C HP Audio Hi
Pass 2 Mic
Pass 1 Mic
Copilot Mic
Copilot PTT
Exp. Audio Input
Exp. Power
Expansion Audio (R)
5 4 3 2 1
9 8 7 6
10
12 11
13
Connector when viewed from front
To A/C Radio Mic Audio Hi
Pilot Headphone Jack
Expansion Audio (L)
18 17 16 15 14
Pass 2 Audio (R)
Pass 2 Audio (L)
Pass 1 Audio R
Pass 1 Audio (L)
Copilot HP Audio (R)
Copilot HP Audio (L)
Pilot HP Audio (R)
Pilot HP Audio (L)
22 21 20 19
Pilot PTT
Pilot Mic
Misic Input (R)
Music Input (L)
24 23
A/C Radio PTT
A/C Mic Audio Hi
25
Power Input 11-33 VDC
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. Jacks
must be electrically floating.
4. Connect shields at intercom end only
5. AUX headphone and microphone jacks are
required.
NOTES:
Copilot PTT
Copilot Mic Jack
Pilot Mic Jack
REV
DOCUMENT NUMBER:
TITLE:
SIZE
Pilot PTT
2
1
1
120-125-0002
8/27/98
DATE:
ECO
Stereo/Mono Switch
(required)
Passenger 1 Headphone
Copilot Headphone Jack
Passenger 2 Headphone
24
13114
12
25
22
16
21
8
20
9
7
19
6
15
2
3
10
23
11
Music (L)
Pilot Phones (L)
Pilot Phones (R)
A/C PTT
A/C Mic Audio Hi
A/C Mic Audio Lo
PM2000 Sub-D DB-25
Power In
Ground
A/C Radio Phone Audio Hi
A/C Radio Phone Audio Lo
PM2000 Operation/Installation Manual Page 8 Revision 2, August 1998
Pilot Phones Lo
Copilot Phone Audio (L)
Copilot Phone Audio (R)
Copilot Phone Audio Lo
Pass 1 Phone Audio (L)
Pass 1 Phone Audio (R)
Pass 1 Phone Audio Lo
Pass 2 Phones Audio (L)
Pass 2 Phones Audio (R)
Pass Phones Audio Lo
Pass 1 Mic Audio Hi
Pass 1 Mic Audio Lo
Pass 2 Mic Audio Hi
Pass 2 Mic Audio Lo
Copilot Mic PTT
Copilot Mic Audio Hi
Pilot Mic PTT
Mic Audio Lo
9800 Martel Road
Lenoir City, TN 37772
(423) 988-9800 FAX (423) 988-6619
PM2000
4-Place Stereo
Panel Mounted Intercom
Operator's and Installation Manual
NOTICE: In certified aircraft, warranty is
not valid unless this product is installed by an
Authorized PS Engineering dealer.
Revision 2, August 1998 Page 1 200-195-0002
Document Number 200-195-0002
Revision 2 August 1998
Introduction
Congratulations on your purchase of a
PM2000 intercom! We at PS Engineering welcome you to our family.
Front Panel of PM2000
The PM2000 is a panel mounted, 4-place
intercom that offers features that make this the
intercom of choice by pilots who demand quality sound. This manual provides information on
the installation and operation of the PM2000.
Please read it completely before installation to
reduce the risk of damage to the unit and maximize your enjoyment of its use.
Description
The PM2000 is a 4-place, STEREO, panel
mount intercom with individual volume and
VOX circuits for the pilot, copilot, and passengers 1 & 2.
Although there is only a single control
knob for the volume and squelch circuits, when
an adjustment is made to the volume control,
eight output amplifiers are being changed simultaneously. Likewise, when the squelch control knob is adjusted, three individual squelch
circuits are being changed at the same time.
A 2-position mode switch allows the pilot
to select one of two configurations. The "ALL"
mode places all headsets on a party line, hear-
ing intercom conversation and the aircraft radios.
In the "ISO" mode, the pilot is isolated from
all others and is connected to the aircraft radio
allowing un-interrupted radio communications.
The passengers continue to communicate with
themselves without distracting the pilot.
The PM2000 has an automatic fail-safe interconnect to the aircraft radio. If power is disrupted to the intercom for any reason, an internal
relay will connect the pilot's headset to the aircraft radio, permitting continued radio communications.
A 2-color LED glows green when power is
on and changes to red when someone presses
their Push To Talk.
Provision for an entertainment input allows
the pilot, copilot and passengers the option to
listen to music during flight. During intercom or
aircraft radio activity, this music automatically
mutes to permit easy communications. When the
activity ceases, the "Soft Mute™" circuit gradually returns the music to the original listening
volume. By depressing the mute control (located
on the VOX control) once, it is possible to have
the music remain at the unmuted level.
During various phases of flight, the degree
of importance of the aircraft radio will vary. Because the "ISO" mode directly connects the pilot
to the aircraft radio, select the "ISO" mode when
the pilot must have top priority on radio transmissions.
Both pilot and copilot have transmit capabilities. The PM2000 only allows the audio of
the person who presses their PTT to be transmitted over the aircraft radio. If both pilot and copilot press the PTT at the same time, the copilot
will override. Placing the unit in fail-safe
(turning off) will return control to the pilot position. When either pilot or co-pilot presses PTT,
may need several rotations before the adjustment is complete. When the aircraft radio becomes active, the music should mute.
Warranty
PS Engineering, Inc. warrants this product
to be free from defect in material and workmanship for a period of one year from the date of
installation. In certified aircraft, an FAA Form
337 must accompany the warranty card for this
warranty to be in effect. During the warranty
period, the unit must be returned to PS Engineering, Inc. and, at their option, it will send a
replacement at no charge.
This warranty is not transferable. Any implied warranties expire at the expiration date of
this warranty. WE SHALL NOT BE LIABLE
FOR INCIDENTAL OR CONSEQUENTIAL
DAMAGES. This warranty does not cover a
defect that has resulted from improper or unreasonable use or maintenance as determined by
us. This warranty is void if there is any attempt
to dissemble this product without factory
authorization.
This warranty gives you specific legal
rights, and you may also have other rights
which vary from state to state. Some states do
not allow the exclusion of limitation of incidental or consequential damages, so the above limitation or exclusions may not apply to your state.
Service
Call PS Engineering, Inc. at (423) 9889800 and ask for a technician. He may be able
to diagnose the problem and offer a solution
without the possible need for returning the unit.
If the unit does need servicing, ship product in
UPS approved packaging to:
PS Engineering, Inc.
Attn.: Service Department
9800 Martel Road
Lenoir City, TN 37772
(423) 988-9800
FAX (423) 988-6619
Appendix A
PTT Modifications
When received from the manufacturer, after-market PTT switches open the microphone
audio path to the "ring" connection of the PTT
mic plug. When the PTT is between the intercom and the headset, the intercom function will
not work until the PTT switch is depressed. A
simple modification can be performed to allow
proper intercom operation. NOTE: This modification does not alter normal operation.
Procedures For David Clark's PTT
1 Unscrew the round black plastic cover from the
jack.
2 Connect the joined black wires to the red wire.
3 Replace the round black plastic cover.
Procedures for the Telex's PT-200
1 Unscrew the round black plastic cover from the
jack.
2 Cut the red wire in the middle of the wire
3 Strip both ends of the insulation
4 Solder the two ends to the ground lug to the
PTT jack
5 Replace the round black plastic cover
Procedures for the Telex's PT-300
1 Unscrew the round black plastic cover from the
plug jack
PM2000 Operation/Installation Manual Page 2 Revision 2, August 1998
Revision 2, August 1998 Page 7 200-195-0002
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