Installation manual
PS Engineering 
PMA6000 Series Audio Selector Panel and Intercom System 
Installation Manual 
200-066-0100  Page 1-2  Rev. 1, March 2005 
Figure 1-1 PMA6000M 
Figure 1-2 PMA6000M-C 
1.4  APPROVAL BASIS - FAA 
TSO Approval. 
The PMA6000, PMA6000C and Audio Selector Panels are FAA approved under TSO C50c (Audio Am-
plifiers). 
The PMA6000M and PMA6000M-C are FAA approved under TSO C50c and TSO C35d (Marker Beacon 
Receivers). 
All systems comply with RTCA DO-143, DO-160b and DO-170. 
Operation is subject to the following conditions: 
1.  This device may not cause harmful interference. 
2.  This device must accept any interference received, including interference that may cause undesired 
operation. 
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 
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) 










