SENNHEISER HME 120
Manual de Servicio

HME 100
Headsets | Pilot´s Headset
General Description The HME 100 / HME 105 / HME 120 is a pilot�s headset with closed ear protector headphones and excellent passive noise attenuation for use in helicopters, propeller and turbo-prop aircraft.

Cat. No. 004701 HME 100 Cat. No. 005182 HME 105 Cat. No. 004702 HME 120

Technical Data Headphones Transducer principle ............................................................ dynamic Ear coupling........................................................circumaural, closed Frequency response ................................................ 45 � 15,000 Hz Nominal impedance active/passive HME 100/105/120........................................................150 �, mono HME 100 ..................................................300 � per system, stereo Attenuation (passive) .................................................> 10 � 40 dB NRR (Noise Reduction Rating) ................................................24 dB Contact pressure ...........................................................approx. 10 N Weight without cable ...............................................................350 g Microphone incl. Preamplifier Type....................................................................................... MKE 45-1 Transducer principle ...............back-electret condenser capsule, noise-compensated Frequency response ................................................ 300 � 5,000 Hz Max. SPL ................................................................................... 120 dB Output voltage ...............................400 mV ± 3 dB at 114 dB/SPL (as per RTCA/DO 214) Terminating impedance...........................................................150 � Operating voltage....................... 8 � 16 V DC, approx. 8 � 25 mA (as per RTCA/DO 214) General Data Connection cable HME 100/105 .................single-sided round cable, length 1.5 m HME 120 ................................................... single-sided coiled cable Connectors HME 100 � Headphones......................................................... 1/4� stereo jack � Microphone ................................................... PJ-068 (5.25 mm �) HME 105 � Headphones + Mic .................................................................XLR-5 HME 120 � Headphones + Mic .............................................................U-174/U Specials HME 100/105/120............................. headphone volume control, HME 100 ............................................................mono/stereo switch Operating temperature ...................................... � 15 °C ... + 55 °C Storage temperature ...........................................� 55 °C ... + 55 °C

Features Constant attenuation of up to 40 dB Advanced transducer design ensures excellent speech intelligibility Headphone volume control Noise-compensated boom microphone for superior speech transmission Delivery includes: 1 HME 100 / HME 105 / HME 120 1 carrying case for headset and accessories 1 MZQ 2002-1 cable clip 1 MZW 45 windshield

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Replacement Parts Ear pads (1 pair)

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Gel ear pads

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MZW 45 windshield