Instructions for Use
Page 2
... the microphone ...20 Using the headsets ...22 Turning NoiseGard™ on/off ...22 Mono/Stereo selection (except HMEC 355, HMEC 355-C, HMEC 372 and HMDC 372 22 Adjusting the volume ...22 Attaching the cable clip ...23 Folding up the headphones ...23 Spare parts ...24 Valuable information on NoiseGard 26 In case of difficulty ...28 Technical data...
... the microphone ...20 Using the headsets ...22 Turning NoiseGard™ on/off ...22 Mono/Stereo selection (except HMEC 355, HMEC 355-C, HMEC 372 and HMDC 372 22 Adjusting the volume ...22 Attaching the cable clip ...23 Folding up the headphones ...23 Spare parts ...24 Valuable information on NoiseGard 26 In case of difficulty ...28 Technical data...
Instructions for Use
Page 3
...; turned on, you . Before operating any aircraft, make sure that do not interfere with your Sennheiser agent. 3 The HMEC 350, HMEC 352, HMEC 355, HMEC 355-C, HMEC 356, HMEC 372, HMEC 450 and HMDC 372 are pilot headsets with closed ear protector headphones and NoiseGard™ active noise compensation for example, those from engines, propellers, warning alarms, etc.) may sound different...
...; turned on, you . Before operating any aircraft, make sure that do not interfere with your Sennheiser agent. 3 The HMEC 350, HMEC 352, HMEC 355, HMEC 355-C, HMEC 356, HMEC 372, HMEC 450 and HMDC 372 are pilot headsets with closed ear protector headphones and NoiseGard™ active noise compensation for example, those from engines, propellers, warning alarms, etc.) may sound different...
Instructions for Use
Page 4
Headset features HMEC 350 NoiseGard™ headset • New active headset with effective attenuation of external noise across the entire frequency spectrum due to NoiseGard™ active noise compensation • NoiseGard™ active noise compensation provides clear communications even in the noisiest environment • Improved acoustic properties: The frequency response of the headphones has been optimised in...
Headset features HMEC 350 NoiseGard™ headset • New active headset with effective attenuation of external noise across the entire frequency spectrum due to NoiseGard™ active noise compensation • NoiseGard™ active noise compensation provides clear communications even in the noisiest environment • Improved acoustic properties: The frequency response of the headphones has been optimised in...
Instructions for Use
Page 5
... warranty) Product variants HMEC 352 NoiseGard™ headset The HMEC 352 differs from the HMEC 350 in the following features: • Connection of microphone and NoiseGard™ electronics via PJ-068 plug HMEC 355 NoiseGard™ headset The HMEC 355 differs from the HMEC 350 in the following features: • No Mono/Stereo switch • Connection of headphones, microphone and NoiseGard™ electronics...
... warranty) Product variants HMEC 352 NoiseGard™ headset The HMEC 352 differs from the HMEC 350 in the following features: • Connection of microphone and NoiseGard™ electronics via PJ-068 plug HMEC 355 NoiseGard™ headset The HMEC 355 differs from the HMEC 350 in the following features: • No Mono/Stereo switch • Connection of headphones, microphone and NoiseGard™ electronics...
Instructions for Use
Page 6
... 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...
... 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...
Instructions for Use
Page 7
HMEC 450 NoiseGard™ headset The HMEC 450 differs from the HMEC 350 in the following features: • Stylish silver design • Leatherette ear cushions • Headband padding can be buttoned HMDC 372 NoiseGard™ headset The HMDC 372 differs from the HMEC 350 in the following features: • No Mono/Stereo switch • Coiled cable • M-87/AIC dynamic microphone and low impedance headphones • Connection of headphones and microphone via U-174/U jack plug to a low impedance interface in the helicopter 7
HMEC 450 NoiseGard™ headset The HMEC 450 differs from the HMEC 350 in the following features: • Stylish silver design • Leatherette ear cushions • Headband padding can be buttoned HMDC 372 NoiseGard™ headset The HMDC 372 differs from the HMEC 350 in the following features: • No Mono/Stereo switch • Coiled cable • M-87/AIC dynamic microphone and low impedance headphones • Connection of headphones and microphone via U-174/U jack plug to a low impedance interface in the helicopter 7
Instructions for Use
Page 10
... for HMEC 350 and HMEC 450 Connecting cable for HMEC 352 Connecting cable for HMEC 355 Connecting the headsets Connecting cables for headsets HMEC 350 and HMEC 450 headsets: 1 ¼" (6.35 mm) stereo jack plug for connecting the headphones 1 PJ-068 jack plug for connecting the microphone 1 XLR-3 plug for connecting the power supply for the NoiseGard™ electronics HMEC 352...
... for HMEC 350 and HMEC 450 Connecting cable for HMEC 352 Connecting cable for HMEC 355 Connecting the headsets Connecting cables for headsets HMEC 350 and HMEC 450 headsets: 1 ¼" (6.35 mm) stereo jack plug for connecting the headphones 1 PJ-068 jack plug for connecting the microphone 1 XLR-3 plug for connecting the power supply for the NoiseGard™ electronics HMEC 352...
Instructions for Use
Page 11
Connecting cable for HMEC 355-C Connecting cable for HMEC 356 HMEC 355-C headset: 1 XLR-5 plug for connecting the headphones and the microphone 1 XLR-3 plug for connecting the power supply for the NoiseGard™ electronics HMEC 356 headset: 1 6-pin Redel plug for connecting the headphones, the microphone and the power supply for the NoiseGard™ electronics HMEC 372 and HMDC 372 headsets: 1 U-174/U jack plug for connecting the headphones and the microphone 1 XLR-3 plug for connecting the power supply for the NoiseGard™ electronics Connecting cable for HMEC 372 and HMDC 372 11
Connecting cable for HMEC 355-C Connecting cable for HMEC 356 HMEC 355-C headset: 1 XLR-5 plug for connecting the headphones and the microphone 1 XLR-3 plug for connecting the power supply for the NoiseGard™ electronics HMEC 356 headset: 1 6-pin Redel plug for connecting the headphones, the microphone and the power supply for the NoiseGard™ electronics HMEC 372 and HMDC 372 headsets: 1 U-174/U jack plug for connecting the headphones and the microphone 1 XLR-3 plug for connecting the power supply for the NoiseGard™ electronics Connecting cable for HMEC 372 and HMDC 372 11
Instructions for Use
Page 14
Power supply for panel mounting in the aircraft. The HMEC 350, HMEC 355-C, HMEC 372, HMEC 450 and HMDC 372 headsets are supplied with operating voltages between 12-35 V DC. The XLR-3 socket must be connected to perform this type of ... corresponding jack sockets of short circuit! Before turning on NoiseGard™, ensure that the on -board system The NoiseGard™ electronics can be mounted by a 1 A fuse. XLR-3 socket HMEC 350 and HMEC 450 headsets: ̈ Connect the ¼" (6.35 mm) stereo jack plug for the headphones and the PJ-068 jack plug for the microphone to...
Power supply for panel mounting in the aircraft. The HMEC 350, HMEC 355-C, HMEC 372, HMEC 450 and HMDC 372 headsets are supplied with operating voltages between 12-35 V DC. The XLR-3 socket must be connected to perform this type of ... corresponding jack sockets of short circuit! Before turning on NoiseGard™, ensure that the on -board system The NoiseGard™ electronics can be mounted by a 1 A fuse. XLR-3 socket HMEC 350 and HMEC 450 headsets: ̈ Connect the ¼" (6.35 mm) stereo jack plug for the headphones and the PJ-068 jack plug for the microphone to...
Instructions for Use
Page 31
... time of battery pack (except HMEC 352 and HMEC 356) HMEC 350 Ȋ HMEC 352 Ȋ HMEC 356 Ȋ HMEC 450 1.5 m, unilateral 370 g 12-35 V DC 27 mA (zero signal current), max. 80 mA 500 mA thermo fuse 6.35 mm stereo jack plug for headphones, PJ-068 jack plug for microphone, XLR-3 for NoiseGard™ Ȋ 6.35 mm stereo...
... time of battery pack (except HMEC 352 and HMEC 356) HMEC 350 Ȋ HMEC 352 Ȋ HMEC 356 Ȋ HMEC 450 1.5 m, unilateral 370 g 12-35 V DC 27 mA (zero signal current), max. 80 mA 500 mA thermo fuse 6.35 mm stereo jack plug for headphones, PJ-068 jack plug for microphone, XLR-3 for NoiseGard™ Ȋ 6.35 mm stereo...
Instructions for Use
Page 33
... Operating time of battery pack (except HMEC 355) HMEC 355 Ȋ HMEC 355-C Ȋ HMEC 372 Ȋ HMDC 372 1.5 m, unilateral Ȋ coiled cable, unilateral 370 g 12-35 V DC 27 mA (zero signal current), max. 80 mA 500 mA thermo fuse XLR-5 for headphones, microphone and NoiseGard™ Ȋ XLR-5 for headphones Ȋ and microphone, Ȋ XLR-3 for...
... Operating time of battery pack (except HMEC 355) HMEC 355 Ȋ HMEC 355-C Ȋ HMEC 372 Ȋ HMDC 372 1.5 m, unilateral Ȋ coiled cable, unilateral 370 g 12-35 V DC 27 mA (zero signal current), max. 80 mA 500 mA thermo fuse XLR-5 for headphones, microphone and NoiseGard™ Ȋ XLR-5 for headphones Ȋ and microphone, Ȋ XLR-3 for...