PS Engineering
PMA7000M-S Series Audio Selector Panel and Intercom System
Civil Air Patrol Version Installation and Operator’s Manual
200-072-0004
Page 1-4
Rev. 4, Sept. 2000
Intercom Specifications
Intercom Positions
:
6 places (with individual
Intelli
Vox® circuits)
Music Inputs
:
2 (Stereo)
Music Muting
:
>-30 dB "Soft Mute" when Com or intercom active.
Distortion:
<1% THD @ 38 mW into 150
Ω
<10% THD @ 70mW into 150
Ω
Mic Freq. Response, 3 dB:
300 Hz - 6000 Hz
Music Freq. Response, 3 dB
:
100 Hz - 18kHz
MARKER BEACON RECEIVER:
PMA7000M-S only
Frequency
:
75 MHz Crystal Controlled
Sensitivity
:
Low:
High:
Capable of: (preset at factory for field application)
1000
µ
Volts (Hard)
200
µ
Volts (Hard)
Selectivity
:
-6 dB at ±10 kHz
-40 dB at ±120 kHz
External Lamp Output
:
9.0 (±1.5 at maximum brightness, unloaded) VDC
positive when active, max. current 125 mA
MM Sense
:
Active high (4.7 VDC ± 0.5V) during Middle
Marker acquisition, for autopilot use.
1.6
EQUIPMENT SUPPLIED
1 ea. of the following units:
Model
Part Number
PMA7000S Special CAP version
7000S- CAP
PMA7000M-S Special CAP version with Marker Beacon Receiver
7000M-S- CAP
PMA7000M-S Installation Kit: 250-007-002
Part Number
Description
Quantity
120-430-0420
Tray Assembly
1
120-425-4400
Bottom connector, key between 7/8
1
120-425-4402
Top connector (Stereo), key between 5
1
655-000-0001
Gold Plated Crimp Pins
88
200-072-0004
Operator's and Installation Manual (CAP)
1
475-440-0007
#4 x 40 screw w/nylon patch
4
1.7
EQUIPMENT REQUIRED BUT NOT SUPPLIED
a)
Circuit Breaker: 1 ea. 3 amp (28V)
b)
Speaker, 4
Ω
c)
Stereo Headphone Jacks (as required)
d)
Microphone Jacks (as required)
e)
Stereo Headphones, 150
Ω
, up to 6 as required
f)
Microphones, up to 6 as required
g)
Marker Antenna (75 MHz, VSWR <1:1.5, and appropriate for the airspeed)
h)
Interconnect Wiring
1.8
LICENSE REQUIREMENTS
None
