PS Engineering
PMA7000B Series Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-780-0004 Page 1-3 Feb. 2004
Audio Selector Specifications
Audio selector panel input impedance:
510 Ω
Input Isolation: -60 dB (min.)
Speaker Muting: -60 dB (min.)
Speaker Output (into 4 Ω) with no clipping
14 VDC:
28 VDC:
3 Watts (min.)
10 Watts (min.)
Receiver Inputs: 9 (Com 1, Com 2, Com 3, Nav 1, Nav 2, ADF,
DME, MKR, AUX)
Unswitched Inputs: 4
Transmitter Selections: 5 (Com 1, Com 2, Com 3
Com1/2, Com1/3)
Speaker Impedance:
4 Ω
Headphone Impedance:
150 – 1000 Ω
Headphone Output: 38 mW each headset, no clipping <1% THD
Microphone Impedance:
150 - 600 Ω
Intercom Specifications
Intercom Positions: 6 places (with individual IntelliVox® circuits)
Music Inputs: 2, (Independent, Stereo)
Music Muting: >-30 dB "Soft Mute" when Com or intercom active.
Distortion:
<1% THD @ 38 mW into 150Ω
Mic Freq. Response, 3 dB: 300 Hz - 6000 Hz
Music Freq. Response, 3 dB: 20 Hz - 18kHz
MARKER BEACON RECEIVER: (if equipped)
Frequency: 75 MHz Crystal Controlled
Sensitivity:
Low:
High:
Capable of: (preset at factory for field application)
1000 µVolts (Hard) (360 to 570 µV soft)
200 µVolts (Hard) (130 to 200 µV soft)
Selectivity: -6 dB at ±10 kHz
-40 dB at ±120 kHz
External Lamp Output: 7.5 (±4 VDC unloaded, at maximum brightness) VDC
positive when active, max. current 125 mA
MM Sense: Active high (4.5 ± 1.0VDC)
1.6 EQUIPMENT SUPPLIED
1 ea. of the following units:
Model Description Part Number
PMA7000B PMA7000B Audio Panel with Marker Beacon and Stereo inter-
com.
7000 ( )
PMA7000B Opt 2 PMA7000B Audio Panel without Marker receiver 7000 Opt 2
PMA7000B Installation Kit: 250-007-0002
Description Quantity Part
Number
PMA7000 installation rack assembly 1 120-430-0420
Top Molex Connector Shell w/key, 44 pin, key 4/5 1 120-425-4402
Bottom Molex Connector Shell w/key, 44 pin, key 7/8 1 120-425-4400
Gold Plated Crimp Pins 88 425-001-0002
4 40 X 7/16 screw w/nylon patch 4 475-440-0007
Grounding bar 1 430-007-0001
6-32 X 3/4 pan head Phillips screw 2 475-632-0038
6-32 Nut Flat 2 475-632-0003
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