PS Engineering PM1200 Installation Manual - Manual (Page 2)

March 2013 Rev. 12 Page 2 200-196-0104
Section 1 General Information
1.1 Introduction
The PM1200 is a panel mounted, 2-place (expandable
with IntelliPAX p/n 11616R) monaural intercom system
(ICS) designed specifically for high-noise aircraft environ-
ments. Please read this manual completely before installa-
tion to minimize the risk of damage to the unit and to be-
come familiar with all the features.
1.2 Scope
This manual contains installation and operational in-
structions for the following PS Engineering units:
Part Number Description
11960 Push to talk intercom for use in noisy cockpits
11961 Same as above but remote (blind) mounting
11960-Exp Same as above, but with expansion capability
1.3 Description
The PM1200 is a 2-place (unless expanded), panel-
mounted intercom with PS Engineering‘s proprietary Intel-
liVOX® intercom protocol. The audio has been further en-
hanced with extra audio filtering for the microphones, and
added headphone audio power.
The PM1200 is backward compatible with PM1000II
units, P/N 11902, 11909 and 11922– contact factory for
details. However, the PM1000-series MUST be wired cor-
rectly per the manual, particularly the pilot radio PTT.
The unit can be used as either voice-activated, or push
to talk intercommunications, by simply pushing a front
panel switch.
The PM1200 has an automatic fail-safe interconnect to
the aircraft radio. If power to the intercom is disrupted, an
internal relay will connect 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.
An entertainment input is provided, allowing the users
to listen to music during flight. During intercom or aircraft
radio traffic, this music is automatically muted to allow
communications without distraction. When the activity
ceases, the Soft Mute™ circuit gradually returns the music
to the original volume.
Both pilot and copilot have transmit capabilities over
the radio. The PM1200 allows only the person who presses
their radio PTT to be heard over the aircraft radio. If both
pilot and copilot press the PTT at the same time, the pilot
will have priority and override the copilot.
1.4 Approval Basis *None*
The PM1200, 11960, 11960-EXP, or 11961, is NOT
FAA Approved. It is the installers responsibility to deter-
mine suitability for installation.
1.5 Specifications
Input power: 13.8 - 27.5 Volts DC
Current Drain: < 250 mA (Externally fused at 1 Amp)
Output 120 mW into 150 Ω @ 27.5 VDC
70 mW @ 13.75 VDC
Headphone Impedance: 150-1000 ohms typical
Aircraft Radio Impedance: 500- 1000 Ω typical
3 dB Music Frequency Response: 200 Hz to 15 kHz
Unit weight: 12 Ounces (0.342 kg)
Dimensions: 1.25" H x 3.00" W x 5.80" D
(3.2 x 7.6 x 14.7 cm)
Temperature -20ºC to +55ºC
Altitude 50,000 ft.
1.6 Equipment required but not supplied
A. Headphones, 150-300 Ω monaural, up to two as required
B. Microphones, up to two, as required
C. Crimping Tool, AMP 601966-1 , and Positioner, 601966-
5 (or equiv.)
D. Appropriately constructed interconnect wiring
E. Circuit Protection, 1 Amp.
F. Radio PTT switches (1-pilot, 1-copilot)
G. Intercom PTT switches (if desired) 2 ea.
Section 2 Installation
2.1 General Information
The PM1200 comes with all necessary mechanical
hardware for installation. Installation of the PM1200, using
the appropriate wiring and hardware, does not require spe-
cial tools or knowledge other than described in FAA Advi-
sory Circular 43.13–2B. Installers should be qualified in
accordance with 14 CFR 65.81(b).
It is the installer's responsibility to determine the ap-
proval basis for this installation. An FAA From 337, or
other field approval may be required in a certified aircraft.
A custom-made wiring harness is available from PS Engi-
neering, shipped within 5-business days of order. Visit
www.ps-engineering.com for more information.
2.2 Unpacking and inspection
The PM1200 was carefully inspected and thoroughly
tested before shipment. It should be free of electrical or cos-
metic defect.
Upon receipt, verify that the parts kit includes: