PS Engineering PMA7000B Installation Manual - Manual (Page 5)

PS Engineering
PMA7000B Series Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-780-0005 Page 1-2 Rev. 10, December 2012
level for the pilot and copilot, while the outer knob controls the passenger intercom volume. Intercom
squelch is automatic.
An “Alternate Intercom Mode” is incorporated in PMA7000B beginning with a serial number starting
with “J”and above. This allows the passengers and crew to converse, but removes radio traffic from the
passengers’ headphones, and blocks passenger mics from the crew during radio receptions.
A 3-light Marker Beacon receiver is integrated in the PMA7000B. This provides the necessary Marker
Beacon lights and audio indications necessary for an Instrument Landing System (ILS) approach.
1.4 APPROVAL BASIS -
TSO Approval.
The PMA7000B-series Audio Selector Panels are FAA approved under TSO C50c (Audio Amplifiers) and
TSO C35d (Marker Beacon Receivers). In addition, they are approved by the Joint Airworthiness Authori-
ties under JTSO C50C and JAR-TSO 2C35d.
All systems comply with relevant portions of EUROCAE RTCA MPS WG No. 7/70, DO-143 and (Marker
Beacon Receivers), ED-14C/DO-160C (Environmental Conditions and Test Procedures for Airborne
Equipment), ED12B/DO-178B (Software Considerations for Airborne Equipment) and ED- 18/DO-214
(Audio Systems Characteristics and Minimum Operational Performance Standards for Aircraft Audio
Systems).
Operation is subject to the following conditions:
This device may not cause harmful interference.
This device must accept any interference received, including interference that may cause undesired opera-
tion.
1.5 SPECIFICATIONS
TSO COMPLIANCE
Marker Beacon: C35d, Class A
Audio Selector/Intercom: C50c, Class A
APPLICABLE DOCUMENTS: RTCA/DO-214 RTCA/DO-143 RTCA/DO-160C
RTCA/DO-178B
ENVIRONMENTAL Qualifications: A1D1/CA(MN)XXXXXXBBBBTBKXX
Operating Temperature Range: -15º C to 55ºC
Altitude: Up to 50,000 feet in an non-pressurized area
DIMENSIONS: Height: 1.3 in. (3.3 cm) Width: 6.25 in. (16.9 cm)
Depth: 6.8 in. (17.3 cm)
WEIGHT (With Rack & Connectors): 1.5 lb. (0.54 kg)
POWER REQUIREMENTS (Including Internal Lighting):
Voltage: 11 to 33 VDC
Maximum Current: 2.5 Amp (Externally protected by a 3A pull-type
breaker)