Specifications

PS Engineering
PMA7000M-S Series Audio Selector Panel and Intercom System
Civil Air Patrol Version Installation and Operator’s Manual
200-072-0004 Page 1-3 Rev. 4, Sept. 2000
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 Level D
ENVIRONMENTAL Qualifications: A1D1/CA(MN)XXXXXXBBBBTBKXX
Temperature Range:
Operating:
Storage:
-15º C to 55ºC
-20º C to 85ºC
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. (0.54 kg)
POWER REQUIREMENTS (Including Internal Lighting):
Voltage: 11 to 33 VDC
Maximum Current: 2.5 Amp (Externally protected by a 3 Amp circuit
breaker.)
Typical operating current:
Speaker off:
Speaker on, 28V, full radio volume
350 mA
750 mA
2.5 A
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: 8
(Com 1, Com 2, Com 3, Nav 1, Nav 2, ADF,
DME, MKR)
Unswitched Inputs: 2
(examples: GPS WPT, Autopilot Disconnect,
Altimeter DH)
Transmitter Selections: 9
(Com 1, Com 2, Com 3
Com1/Com2, Com 1/3, Com 2/3 and by swap
switch, Com2/1, Com 3/1, Com 3/2)
Speaker Impedance: 4 Ω
Headphone Impedance: 150 - 1000 Ω
Headphone Output: 38 mW each headset, no clipping <1% THD
70 mW each headset with < 10% THD
Microphone Impedance: 150 - 600 Ω