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PS Engineering

PMA6000 Series Audio Selector Panel and Intercom System

Installation Manual

200-066-0006 Page 1-3 Rev. 6, March 2005

1.5 SPECIFICATIONS

GENERAL SPECIFICATION CHARACTERISTIC TSO COMPLIANCE:

Marker Beacon: C35d, Class A

Audio Selector/Intercom: C50c, Class A

APPLICABLE DOCUMENTS: RTCA DO-160b, RTCA DO-170 and RTCA DO-143

ENVIRONMENTAL Qualifications: A1D1/CAMXXXXXXXBBBBAAX

Temperature Range: Operating: -20°C to +55°C Storage: -40°C to +85°C

Altitude: Up to 50,000 feet in an non-pressurized area of the cockpit.

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. (0.68 kg.)

POWER REQUIREMENTS (Including Internal Lighting):

Voltage: 13.75 or 27.5 VDC*

Maximum Current: 1 Amp (Externally protected by a 2 Amp circuit breaker.)

Typical operating current: speaker off: 350 mA

speaker on: 600 mA

NOTICE: To reduce the amount of heat dissipated in the audio selector panel, when used in a 28

Volt aircraft, the 15 Ω, 15 Watt dropping resistor (P/N 701-015-1501) must be installed in series

with the power input.

Audio selector panel input impedance: 510 Ω

Input Isolation: -70 dB (min.)

Speaker Muting: -60 dB (min.)

Speaker Output (into 4 Ω): 3 Watts (min.) with no clipping

Switched Receiver Inputs: 8

(Com 1, Com 2, Nav 1, Nav 2, ADF, DME, MKR, AUX)

Unswitched Inputs: 2

(TEL Ringer, Altimeter DH)

Transmitter Selections: 5

(Com 1, Com 2, Com1/2, Com2/1, TEL/Com1)

on PMA6000, PMA6000S, PMA6000M, PMA6000M-S

(Com 1, Com 2, Com1/2, Com2/1, Com 3)

on PMA6000C, PMA6000S-C, PMA6000M-C, PMA6000M-S-C

Speaker Impedance: 4 Ω

Headphone Impedance: 150 - 1000 Ω

Headphone Output: 45 mW each headset with no clipping

Microphone Impedance: 150 - 600 Ω

Intercom Positions: 6 places

Music Inputs: 2

Music Muting: >50 dB "Soft Mute" when Com or intercom active.

Distortion: <1% THD @ 45 mW into 150Ω

Mic Freq. Response, ±3 dB: 350 Hz - 6000 Hz

Music Freq. Response, ±3 dB: 200 Hz - 15 kHz

MARKER BEACON RECEIVER: (PMA6000M, PMA6000M-S, PMA6000M-C, PMA6000M-S-C

Only)

Frequency: 75 MHz Crystal Controlled

Sensitivity:

Low: 450 µVolts (Hard)

Factory adjusted to 1400µV (Soft)

High: 160 µVolts (Hard)

Factory adjusted to 150µV (Soft)

Selectivity: -6 dB at 110 kHz -40 dB at 120 kHz

External Lamp Output: 9.0 (+/- 0.5) VDC Positive when active, max. current 125 mA

MM Sense: Active high (4.7 VDC +/- 0.5V) during Middle Marker acqui-

sition, for autopilot use.

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PS Engineering PMA6000 Manuel d'installation Page 6

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