PS Engineering PMA6000M-S User Manual

Page 6

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:

(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 150

Ω

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 1400

µV (Soft)

High:

160

µVolts (Hard)

Factory adjusted to 150

µV (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.