Sennheiser NOISEGARD HMDC 322 Instructions For Use Manual
Sennheiser bluetooth headset user manual
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- Instructions for use manual (144 pages) ,
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- Instructions for use manual (222 pages)
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Summary of Contents for Sennheiser NOISEGARD HMDC 322
- Page 1 Headset Instructions for use HMEC 300 HMEC 302 HMEC 305 HMEC 305-C HMEC 306 HMEC 322 HMEC 400 HMDC 322 ™...
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Page 2: Table Of Contents
Contents Safety tips ... 113 Headset features ... 114 Product variants ... 115 Delivery includes ... 118 Recommended accessories ... 119 Connecting the headsets ... 120 Connecting cables for headsets ... 120 Powering options ... 122 Preparing the headsets for use ... 128 Adjusting the headband ... -
Page 3: Safety Tips
• Only replace parts of the headset whose replacement is described in this manual. All other parts of the headset must be replaced by your Sennheiser agent. • Do not immerse the headset in water! For information on how to clean the headset, contact your Sennheiser agent. -
Page 4: Headset Features
Headset features HMEC 300 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 •... -
Page 5: Product Variants
• Power supply for NoiseGard™ is provided via on-board power supply system, cigarette lighter socket or battery pack • Fail safe operation in case of power failure • Supply voltage for the NoiseGard™ system is processed by the in-line electronics in the connecting cable •... - Page 6 HMEC 305-C NoiseGard™ headset The HMEC 305-C differs from the HMEC 300 in the following features: • No Mono/Stereo switch • Connection of headphones and microphone via XLR-5 plug HMEC 306 NoiseGard™ headset The HMEC 306 differs from the HMEC 300 in the following features: •...
- Page 7 HMEC 400 NoiseGard™ headset The HMEC 400 differs from the HMEC 300 in the following features: • Stylish silver design • Leatherette ear cushions • Headband padding can be buttoned HMDC 322 NoiseGard™ headset The HMDC 322 differs from the HMEC 300 in the following features: •...
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Page 8: Delivery Includes
Delivery includes HMEC 300, HMEC 305-C, HMEC 322, HMEC 400 and HMDC 322 headsets • Headset • 3-pin XLR socket for aircraft panel mounting (power supply via the on-board system) • Padded carry and storage bag with shoulder strap for headset and accessories •... -
Page 9: Recommended Accessories
(batteries are not included in the delivery). Length of connecting cable: 0.9 m. Adapter cables (except for HMEC 302, HMEC 305 and HMEC 306) Sennheiser offers special adapter cables for connecting the NoiseGard™ electronics of the HMEC 300, HMEC 305-C, HMEC 322, HMEC 400 and HMDC 322 headsets to the on-... -
Page 10: Connecting The Headsets
Connecting cable for HMEC 300 and HMEC 400 Connecting cable for HMEC 302 Connecting cable for HMEC 305 Connecting the headsets Connecting cables for headsets HMEC 300 and HMEC 400 headsets: ” (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™... - Page 11 HMEC 305-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 Connecting cable for HMEC 305-C HMEC 306 headset: 1 6-pin Redel plug for connecting the headphones, the microphone and the power supply for the NoiseGard™...
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Page 12: Powering Options
Powering options There are three options for powering the NoiseGard™ active noise compensation: Connection to the on-board system (12–35 V DC) Connection to the BP-03 battery pack (accessory, except for HMEC 302, HMEC 305 and HMEC 306) Connection to the cigarette ligther socket (12–35 V DC) via adapter cable (accessory, except for HMEC 302, HMEC 305 and HMEC 306) The supply voltage for the NoiseGard™... - Page 13 Power supply for NoiseGard™ Ground Do not connect! XLR-3 socket for HMEC 300, HMEC 305-C, HMEC 322, HMEC 400 and HMDC 322 headsets 1. Connecting the headset to the on-board system The NoiseGard™ electronics can be connected to on-board power supply systems with operating voltages between 12–35 V DC.
- Page 14 Headset HMEC 302: Connect the ” (6.35 mm) stereo jack plug for the headphones and the PJ-068 jack plug for the microphone to the corresponding jack sockets of your intercom. HMEC 305 headset: Connect the XLR-5 plug to the aircraft’s XLR-5 socket. Headset HMEC 305-C: Connect the XLR-5 plug for the headphones and the microphone to the aircraft’s XLR-5 socket.
- Page 15 2. Connecting the headset to the battery pack (except HMEC 302, HMEC 305 and HMEC 306) The NoiseGard™ electronics of the HMEC 300, HMEC 305-C, HMEC 322, HMEC 400 and HMDC 322 headsets can also be powered via the BP-03 battery pack (u ‘Recommended accessories’).
- Page 16 Connecting the headset, turning on the battery pack Connect the XLR-3 plug of the headset connecting cable to the XLR-3 socket on the connecting cable of the battery pack. HMEC 300 and HMEC 400 headsets: Connect the for the headphones and the PJ-068 jack plug for the microphone to the corresponding jack sockets of your intercom.
- Page 17 3. Connecting the headset via a cigarette lighter adapter cable Sennheiser offers special adapter cables with XLR-3 socket for connecting the NoiseGard™ electronics of the HMEC 300, HMEC 305-C, HMEC 322, HMEC 400 and HMDC 322 headsets to the on-board power supply via the cigarette lighter socket: •...
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Page 18: Preparing The Headsets For Use
Preparing the headsets for use Adjusting the headband For good noise attenuation and best possible comfort, the headband has to be adjusted to properly fit your head: Wear the headset so that the headband runs over the top of your head. Adjust the length of the headband so that •... -
Page 19: Positioning The Microphone
Positioning the microphone Relocating the microphone boom The microphone boom can be worn on either side of the mouth. Loosen the quick-fixing device. Rotate the microphone boom by 180 . Tighten the quick-fixing device. Positioning the microphone towards the corner of the mouth The HMEC 300, HMEC 302, HMEC 305, HMEC 305-C, HMEC 306, HMEC 322 and HMEC 400 headsets feature a flexible microphone boom. - Page 20 For positioning the microphone of the HMDC 322 headset, proceed as follows: Adjust the length of the microphone boom so that the microphone is placed at the corner of the mouth. To do so, loosen the quick-fixing device and adjust the microphone boom in length.
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Page 21: Additional Information For Helicopter Use Of The Hmec 322 Headset
Additional information for helicopter use of the HMEC 322 headset The polarity of the microphone connection in helicopters is not standardized. If the microphone of your headset does not work with the existing polarity, you can reverse the polarity on the headset by simply rotating the microphone module. To do so, please proceed as follows: 1. -
Page 22: Using The Headsets
Using the headsets Turning NoiseGard™ on/off With the NoiseGard™ active noise compensation turned off, the headset can be used as a conventional headset. Turn on the NoiseGard™ active noise compensation by setting the ON/OFF switch to ON. When using the BP-03 battery pack, set the NoiseGard™ ON/OFF switch to ON and use the ON/OFF switch on the battery pack. -
Page 23: Adjusting The Microphone Gain
Mic Gain Adjustment Adjusting the microphone gain According to JTSO approval C58a, the microphone output voltage has to be factory- preset to 400 mV. If this output voltage is too high or too low for your intercom system, it can easily be re-adjusted on the microphone. To do so, use a small slotted screwdriver and turn the ”Mic Gain Adjustment”... -
Page 24: Spare Parts
Spare parts The following spare parts are available from your Sennheiser agent: • Wind screen for MKE 45-1 electret microphone • Ear cushions • Headband padding • Cable clip • Carry and storage bag with shoulder strap Replacing the wind screen If the wind screen for the electret microphone shows signs of wear such as tears or holes, replace the wind screen. - Page 25 Replacing the headband padding Replace the headband padding if it is damaged. Pull the Ziploc type fastening strips of the headband padding apart and remove the worn headband padding. Put the new headband padding around the headband. Pull the two edges of the headband padding together so that the fastening strips slightly overlap.
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Page 26: In Case Of Difficulty
Problem Clear communication but no active noise compensation In case of difficulty If problems occur that are not listed in the below table, please contact your Sennheiser agent. Possible cause and what to do The NoiseGard™ electronics are turned off. - Page 27 Problem Active noise compensation but very low volume communication Active noise compensation but reduced intelligibility Communications in one ear only (only HMEC 300, HMEC 302, HMEC 306 and HMEC 306) Microphone output voltage set too high or too low Possible cause and what to do The volume control is set too low.
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Page 28: Valuable Information On Noisegard
Valuable information on NoiseGard™ The NoiseGard™ principle One of the greatest stress factors today is noise. Research has shown that noise affects the nervous system, and can cause tiredness, poor concentration, irritability and tension. Of even greater concern is the permanent damage to hearing that can result from noise at high levels. - Page 29 In response to these problems, Sennheiser has developed an active noise compensation system – NoiseGard™ – which, combined with a high-quality passive hearing protector, provides consistent noise attenuation over the entire audio range. The overall noise level is reduced so that the radio volume can be turned down but enough noise still remains for the pilot to safely monitor the aircraft engines.
- Page 30 The above diagram shows noise compensation with NoiseGard™: Passive hearing protectors effectively attenuate noise from the middle and upper frequency range, the effect decreasing sharply in the lower range. However, active noise compensation with NoiseGard™ combined with passive hearing protectors results in a reduction of noise of approx.
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Page 31: Connector Assignment
Redel connector (NoiseGard™) 1 Power supply NoiseGard™ (DC+) 2 Audio Lo / DC – 3 Audio Hi left 4 Audio Hi right 5 Microphone Hi 6 Microphone Lo ” (6.35 mm) stereo jack plug 1 Audio Hi left 2 Audio Hi right 3 Audio Lo Connector assignment XLR-3 connector (NoiseGard™) -
Page 32: Technical Data
Technical data Headphones Transducer principle Ear coupling Frequency response Nominal impedance active/passive Attenuation (active and passive) Max. sound pressure level Contact pressure Microphone incl. preamplifier Transducer principle Frequency response Sensitivity Max. sound pressure level Min. terminating impedance Output voltage Supply voltage HMEC 300 HMEC 302 dynamic... - Page 33 General data Connecting cable Weight without cable Power supply for NoiseGard™ Current consumption Fuse Connectors Controls Temperature range Operating time Battery pack HMEC 300 HMEC 302 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 6.35 mm stereo jack plug 6-pin Redel plug for...
- Page 34 Technical data Headphones Transducer principle Ear coupling Frequency response Nominal impedance active/passive Attenuation (active and passive) Max. sound pressure level Contact pressure Microphone incl. preamplifier Transducer principle Frequency response Sensitivity Max. sound pressure level Min. terminating impedance Output voltage Supply voltage HMEC 305 HMEC 305-C dynamic...
- Page 35 General data Connecting cable Weight without cable Power supply for NoiseGard™ Current consumption Fuse Connectors Controls Temperature range Operating time Battery pack HMEC 305 HMEC 305-C 1.5 m, unilateral 370 g 12–35 V DC 27 mA (zero signal current), max. 80 mA 500 mA thermo fuse XLR-5 for headphones, XLR-5 for headphones...
- Page 36 Certificate of Conformity Sennheiser electronic GmbH & Co. KG declare that this device conforms to the applicable CE standards and regulations. For up-to-date information on Sennheiser products, you can also visit the Sennheiser Web site at “http://www.sennheiser.com”.