Sennheiser SH350 Headphones User Manual


 
6
HMEC 355-C NoiseGard™ headset
The HMEC 355-C differs from the HMEC 350 in the following features:
No Mono/Stereo switch
Connection of headphones and microphone via XLR-5 plug
Connection of NoiseGard™ electronics via XLR-3 plug
HMEC 356 NoiseGard™ headset
The HMEC 356 differs from the HMEC 350 in the following features:
Connection of headphones, microphone and NoiseGard™ electronics to the on-board
power supply system (12–35 V DC) via 6-pin Redel plug
HMEC 372 NoiseGard™ headset
The HMEC 372 differs from the HMEC 350 in the following features:
No Mono/Stereo switch
•Coiled cable
Connection of headphones and microphone via U-174/U jack plug to a high impedance
interface in the helicopter