9800 Martel Road
Lenoir City, TN 37772
PM2CREW Intercom Expansion Unit
Unit Part Number 11918, 11918R,
11918P6, 11918R6
11918P8, 11918R8
Passenger Intercom System
Installation and Operation Manual
Document P/N 200-005-0004
Revision 4 Sept. 2000
PS Engineering, Inc. 2000 ©
Copyright Notice
Any reproduction or retransmittal of this publication, or any portion thereof, without the expressed
written permission of PS Engineering, Inc. is strictly prohibited. For further information contact the
Publications Manager at PS Engineering, Inc., 9800 Martel Road, Lenoir City, TN 37772. Phone
(865) 988-9800 www.ps-engineering.com
PS Engineering
PM2Crew Expansion module (11918)
Table of Contents
SECTION I GENERAL INFORMATION 1-2
1.1 I
1.2 S
1.3 D
1.4 A
1.5 S
1.6 E
NTRODUCTION 1-2
COPE 1-2
ESCRIPTION 1-2
PPROVAL BASIS 1-2
PECIFICATIONS 1-2
QUIPMENT REQUIRED BUT NOT SUPPLIED 1-2
SECTION 2 INSTALLATION 2-1
2.1 G
2.2 U
2.3 E
2.4 C
2.4.1 E
2.4.2 P
2.4.3 I
2.4.4 S
2.4.5 A
ENERAL INFORMATION 2-1
NPACKING AND PRELIMINARY INSPECTION 2-1
QUIPMENT INSTALLATION PROCEDURES 2-1
ABLE HARNESS WIRING 2-2
LECTRICAL NOISE ISSUES 2-2
OWER REQUIREMENTS 2-3
NTERCONNECTION WITH MAIN UNIT 2-3
IX AND EIGHT PLACE UNITS (11918P6 AND 11918R6, 11918P8 AND 11918R8) 2-3
UXILIARY INPUTS 2-3
SECTION III OPERATION 3-4
3.1 A
3.2 A
DJUSTING THE VOLUME 3-4
DJUSTING THE SQUELCH CONTROL 3-4
SECTION 4 WARRANTY AND SERVICE 4-4
4.1 W
4.2 F
ARRANTY 4-4
ACTORY SERVICE 4-4
APPENDIX B INSTRUCTIONS FOR FAA FORM 337 A
APPENDIX D WIRING INFORMATION B
Revision 3: Added remote pot information
Revision 4: Added 8-place
200-004-0004 Page i Rev. 4, Sept. 2000
PS Engineering
PM2Crew Expansion module (11918)
Section I General Information
1.1 Introduction
The PM2Crew is a panel mounted, multi-place intercom expansion unit used to add extra stations to an
intercom system. 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 operational instructions for the following PS Engineering units:
Model Description Part Number
PM2CREW 4-place intercom expansion unit system 11918
PM2CREW Remote Blind-mount expansion unit w/remote squelch 11918R
PM2CREW 6-place intercom expansion unit system 11918P6
PM2CREW Remote 6-place blind-mount expansion unit 11918R6
PM2CREW 8-place intercom expansion unit system 11918P8
PM2CREW Remote 8-place blind-mount expansion unit 11918R8
1.3 Description
The PM2CREW (11918) is an intercom expansion unit with volume and squelch controls for the
passengers. This unit is designed to work in combination with the PM1000 (11900, 11900D), PM1000II
(11902, 11922, 11906), PM2000 (11915) intercoms and PMA4000 Audio Panel to provide 4 or 6
additional passenger stations. The part number 11918R is designed for remote, or blind mounting. A
remote squelch control is provided to adjust the VOX threshold, the volume control is factory set for
optimum level.
The 11918P6 and 11918R6 are 6-place expansion units. The 11918P8 and 11918R8 are 8-place expansion
units.
1.4 Approval Basis
None.
It is the installer’s responsibility to determine the applicable approval basis for this installation. This unit is
not designed for use in any flight crew situations, and has no effect on any critical aircraft systems. There
is no significant weight or electrical load presented to the aircraft. The unit can be installed without any
special tools or knowledge.
1.5 Specifications
Input power: from main unit
Headphone Impedance: 150-1000 Ω typical
Audio Distortion: <10% @ 75 mW into 150 Ω load
Aircraft Radio Impedance: 1000 Ω typical
3 dB Mic Frequency Response: 350 Hz — 6000 Hz
3 dB Music Frequency Response: 200 Hz to 15 kHz
Unit weight: 10 Ounces (0.342 kg)
Dimensions: 1.25" H x 2.60" W x 5.50" D (3.2 x 6.6 x 14 cm)
1.6 Equipment required but not supplied
A. Headphones, 150Ω stereo, as required
B. Microphones, up to four, as required
C. Interconnect wiring
D. Intercom or PMA4000 primary unit
E. Headphone and microphone jacks (up to 8, as required)
200-004-0004 Page 1-2 Rev. 4, Sept. 2000
PS Engineering
PM2Crew Expansion module (11918)
Section 2 Installation
2.1 General Information
The PM2CREW comes with all necessary hardware for a typical installation. The unit is installed either in
the panel (11918) or mounted blindly (11918R). If panel mounted, it can be installed near the audio panel,
or a panel near the passengers. If blind mounted, it can be mounted nearly anywhere. If blind mounted, the
squelch control should be mounted in a location convenient to the passengers. The 11918R volume control
for the passengers is factory set for a balanced output, but can be field adjusted through the holes in the
side of the unit.
Installation of the PM2CREW, using the available wiring and hardware supplied, does not require special
tools or knowledge other than described in FAA Advisory Circular 43.13-2. It is the installer's
responsibility to determine the approval basis for this installation. A FAA Form 337, or other approval may
be required. See Appendix B for example of FAA Form 337.
2.2 Unpacking and preliminary inspection
The PM2CREW was carefully inspected mechanically and thoroughly tested electronically before
shipment. It should be free of electrical or cosmetic defect.
Upon receipt, verify that the parts kit includes the following:
PM2CREW Installation Kits
Part Number Description 11918
Quantity
475-440-0318 #4-40 Machine screws, black 4 4 4 4 4 4
625-002-0002 Knobs 2 2 2 2 2 2
425-025-0002 25 pin Sub-d male connector 1 1 1 1 1 1
425-025-0003 Connector hood 1 1 1 1 1 1
430-001-0001 Aluminum face plate 1 1 1 1 1 1
430-002-002 PM2CREW Label 1 1 1 1 1 1
250-009-0002 Remote Squelch Installation kit 1 1 1
200-004-0004 Operator's and Installation Manual 1 1 1 1 1 1
11918P6
Quantit
y
11918R
Quantit
y
11918R
6
Quantit
y
11918R
Quantit
y
11918R
6
Quantit
y
2.3 Equipment installation procedures
2.40”
1.68”
2 ea. 0.125
NOT TO SCALE
2 ea. 0.315
200-004-0004 Page 2-1 Rev. 4, Sept. 2000
Loading...