PS Engineering PM2CREW - Manual (Page 3)

PS Engineering
PM2Crew Expansion module (11918)
200-004-0004 Page 1-2 Rev. 4, Sept. 2000
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, 150 Ω 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)