Axnes Aviation AS
Document number
Revision
Date
AX-PSB-UMAN-0027
Issue E
2015-03-05
Page 2-3
2.7 Location of connectors and pin assignment
MP20 series has two connectors, one for helmet/headset and one for charging.
Charging connector is located in the bottom of the unit and is of the plate type. The
helmet/headset connector is located at the top of the unit. Both connections are water proof.
2.7.1 Helmet/headset connection pin assignment
The helmet/headset connector pin-out is listed in Table 2-1: 10 Pin waterproof
helmet/headset connector. For electrical specification of the pins, please refer to 1.6.3
Headset interface.
Pin
Function
1
Mic+
2
Mic-
3
S
4
Speaker -
5
GND
6
Manufacturing use
7
Manufacturing use
8
Manufacturing use/PTT
1
9
DC out
10
Manufacturing use
Table 2-1: 10 Pin waterproof helmet/headset connector
The connector on the Polycon MP20 is:
Water proof Fisher 10 Pin, panel mount, part no.: AX-CON-0010 (alt. part no.:
DBEU1031A010-130).
The compatible connector for helmet/headset wiring:
Water proof Fisher 10 Pin plug, cable mount, part no.: AX-CON-0010 (alt. part no.:
SE1031A010-130).
2.8 Microphone compatibility
Care should be taken when selecting a microphone to be used with the MP20s. The MP20
input levels are specified in technical data section 1.6.3. It should be noted the supply
voltage to bias the microphone is limited.
1
Valid for units with software version 3.0 or higher. Units with software version 3.0 or higher will show
the software version as two digits in the display at startup.
