Instruction/ maintenance manual of the product HME 120 Sennheiser
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1 Instructions for use HME 100/105/110/120 HMD 120 Βοοκ_83566_1006_ΣΠ6.βοοκ Σειτ ε 1 Διενσταγ, 4. Μ ρζ 2008 1:42 13.
2 Βοοκ_83566_1006_ΣΠ6.βοοκ Σειτ ε 2 Διενσταγ, 4. Μ ρζ 2008 1:42 13.
3 Contents Safety tips .......... .......... ........... .......... .......... ........... .......... ............ ........... .......... .... 4 Headset features ........ ........... .......... ............ ........... .......... .......... ..........
4 The HME 10 0, HME 105, HM E 1 10, HME 12 0 and HM D 120 are pilot headse ts with closed ear protector head phones for use in helicopters, propeller and turboprop a ircraf t. Safety requirements y When using a headset, typical aircraft sounds (for example, those fr om engines, propellers, warning alarms, etc.
5 Headset features HME 100 headset y New passive headset with excellent noise attenuation y Excellent comfor t due to very low w eight, sof t e ar cushions ST ANDARD and padd ed headband as well as b .
6 Product variants HME 105 headset The HME 105 diff ers from the HME 100 in the follow ing features: y No Mono/Stereo switch y Connection of head phones and microphone via XLR-5 plug Headset HME 110 T.
7 HMD 120 headset The HMD 120 differs from the HME 100 in the following features: y No Mono/Stereo switch y Coiled cable y M-87/AIC dynamic microphone and low impeda nce headphones y Connection of headphones and mi crophone via U-174 /U jack plug to a low impedance interf ace in the helicopter Βοοκ_83566_1006_ΣΠ6.
8 Delivery inc ludes HME 100, HME 105, HME 110 and HME 120 headsets y Headset y Padded carry and storage bag for headset and accessories y Wind screen for microphone y Cable clip HMD 120 headset y Hea.
9 Preparing the headsets for use Connecting the headsets HME 100, HME 110 headset 1 1/4” (6.35 mm) stereo jack pl ug for connecting the headphones 1 P J-068 jack plug for connecting the microphone 왘 Connect the 1/4” (6.
10 HME 120 and HMD 120 headsets 1 U-174/U jack plug for connecting the headphones and the microphone 왘 Connect the U-174/U jack plug f o r the headphones and the microphone to the U-174/U socket of your intercom.
11 Positioning the microphone Relocating the microphone boom The microphone boom ca n be worn on either side of the mouth. 왘 Loosen the quick-fixing device.
12 For positioning the microphone of the HMD 120 headset, proceed as follows: 왘 Adjust the length of the microp hone boom so that the micropho ne is placed at the corner of the mouth. T o do so, loosen the q uick-fixing devi ce and adjust the microp hone boom in length.
13 Using the headsets Mono/Stereo selection (HME 100, HME 110) In general, you‘ll receive a mono sound source so that the Mono /Stereo switch can remain set to ‘Mono’.
14 Adjusting the microphone gain (not HMD 120) According to JTSO approval C58a, the microphone output volta ge is factory-preset to 400 mV/114 dB. If the microphone ou tput voltage is too hig h or too low fo r your in tercom system, it can be readjusted on the microphone.
15 Spare parts The following spare parts are availa ble from your Sennheiser agent: y Wind screen MKE 45-1 electret microphone (C at. No. 075823 bulk or 092804 pa ckaged, 1 pcs.) y Cable clip MZQ 2002-01(Cat. No. 044740) y Cable clip HZC 08 (Cat. No. 525787) y Carry and storage bag (Cat.
16 Connector assignment U174/U jack plug 1 Microphone Lo 2A u d i o H i 3M i c r o p h o n e H i 4 Audio Lo XLR-5 connector 1A u d i o H i 2 Audio Lo 3M i c r o p h o n e H i 4 Microphone Lo 5— 1/4” (6.
17 In case of difficulty If problems occur that are not li sted in the below table, please contact your Sennhei ser agent. Problem Possible cause and wha t to do Communicati ons in one ear only (HME 100, HME 110) You are using a stereo intercom system bu t the headset is set to mono operation.
18 T echnical data Headphones Microphone incl. preamplifier (not HMD 120) HME 100, HME 110 HME 105, HME 120 HMD 120 T ransducer p rinciple dynamic dynamic dynamic Ear coupling circumaural, closed circ.
19 General Data Output voltage 400 mV ± 3dB at 114 dB (nach RTCA/DO 214) 400 mV ± 3dB at 114 dB (nach RTCA/DO 214) 400 mV ± 3dB at 114 dB (nach RTCA/DO 214) 1.8 μ V – 4 μ V at 74 dB at 5 Ω Supply volta ge typ. 16 V DC (8–16 V DC, approx. 8–25 mA as per RTCA/DO 214) typ.
20 Manufacturer declarations W arranty 5 years Approval Sennheiser electronic GmbH & Co. KG declare that this device is in compliance with the applicable CE standards and regulations. Batteries or rechargeable batteries Please dispose of batteries or rechargeable batt eries as special waste or return them to your specialist dealer.
An important point after buying a device Sennheiser HME 120 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Sennheiser HME 120 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Sennheiser HME 120 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Sennheiser HME 120 you will learn all the available features of the product, as well as information on its operation. The information that you get Sennheiser HME 120 will certainly help you make a decision on the purchase.
If you already are a holder of Sennheiser HME 120, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Sennheiser HME 120.
However, one of the most important roles played by the user manual is to help in solving problems with Sennheiser HME 120. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Sennheiser HME 120 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
