Sennheiser HMEC 26-B-K
Contents
1. Safety instructions Please read these instructions carefully and completely before using the headset Make these instructions easily accessible to all users at all times Always include these instructions when passing the headset on to third parties During flight operation do not use the headset for telephone calls With the NoiseGard active noise compensation switched on typical aircraft sounds for example those from engines propellers warning alarms etc may sound different to you Before operating any aircraft make sure that with NoiseGard switched on you can hear and recognize these sounds Set the volume to safe levels that do not interfere with your ability to hear informational sounds and warning alarms The headset is capable of producing sound pressure levels exceeding 85 dB A In many countries 85 dB A is the maximum legally permissible level for continuous noise exposure during the working day Exposure to sounds of higher volume levels or for longer durations can permanently damage your hearing Never repair or attempt to repair a defective headset yourself Contact your Sennheiser agent or the Sennheiser Service Department Only replace those parts of the headset whose replacement is described in this manual All other parts of the headset must be replaced by your Sennheiser agent Protect the headset from humidity Use only a slightly damp cloth to clean the headset For information on2. microphone noise compensating 100 6 000 Hz adjustable from 17 100 mV Pa 80 mV Pa 2 dB factory pre set 800 mV 2 dB at 114 dB SPL 150 2 200 Q 8 16 V DC General data Temperature range operation 15 Cto 55 C storage 55 C to 70 C Weight without cable approx 210g Power supply for 2x 1 5 V AA alkaline battery NoiseGard IEC LR 6 or 2x 1 2 V AA rechargeable battery IEC LR 6 with approx 60 hrs operating time or 12 35 V DC via aircraft DC power supply system on suitably equipped aircraft max 35 mA Connector assignment HMEC 26 V KX Ya 6 3 mm PJ 068 XLR 3 connector jack plug equivalent Q quud ect 123 12 3 13 2 1 Audio Hi left 1 not assigned 1 NoiseGard DC 2 Audio Hi right 2 Microphone Hi 2 DC 3 Audio Lo 3 Microphone Lo 3 not assigned 21 HMEC 26 CP V CP B CP BV CP Solder side 1 2 3 Q 4 5 HMEC 26 NP Solder side JU Do d So coo NODON P Uu H HMEC 26 V RP Solder side 1 2 3 4 5 6 22 Audio Hi Audio Lo DC Microphone Hi Microphone Lo NoiseGard DC Audio Hi Audio Lo not assigned Microphone Lo Microphone Hi not assigned DC NoiseGard DC NoiseGard DC Audio Lo DC Audio Hi left Audio Hi right Microphone Hi Microphone Lo HMEC 26 KP V KP BV KP B K BV K 1 4 6 3 mm jack plug PJ 068 equivalent 1 2 3 12 3 HMEC 26 KP 1 Audio Hi 1 NoiseGard DC 2 no
3. 026 35 999 2291 EIG HMEC 26 BV CP 502400 026 35 999 2281 X X SE HMEC 26 KP 502403 026 35 999 3111 X X A x HMEC 26 V KP 502406 026 35 999 3161 X X X 26 502399 026 35 999 1191 X X Sle HMEC 26 BV K 502401 026 35 999 1171 X X Zi HMEC 26 NP 502397 500855 5 5 5 5 026 35 999 3811 HMEC 26 V RP 502397 500853 m 026 35 999 3661 HMEC 26 V KX 502397 502437 026 35 999 4161 X X 26 BV KP 502397 504030 026 35 999 2171 X X SIE Single sided round cable 1 85m XLR 3 connector XLR 5 connector Q Aircraft powered Ya 6 3 mm jack plu Battery powered J plug yp headphones D Operating control page 8 PJ 068 equivalent microphone Operating control II page 9 8 pin Neutricon connector 6 pin Redel connector The headsets can be combined with all cables see page 17 19 Specifications Headphones Transducer principle Ear coupling Frequency response Impedance Characteristic SPL Max SPL Active noise compensation THD Contact pressure dynamic closed supra aural 20 14 000 Hz 600 mono 1 200 stereo 92 dB SPL at 1 kHz 1 mW mono 95 dB SPL at 1 kHz 1 V 120 dB SPL at 1 kHz gt 18 dB 100 300 Hz lt 1 at 1 kHz 95 dB SPL approx 3 6 N Microphone incl preamplifier Type Transducer principle Frequency response Output voltage Terminating impedance Supply voltage 20 MKE 46 pre polarized condenser
4. supplied through the headset For this purpose the NoiseGard active noise compensation must be switched on CAUTION CAUTION Danger of accident due to reduced attention Listening to music or operating an audio device limits your attention and may cause accidents During flight operation do not use the headset for listening to additional audio sources Hearing damage due to high volumes This headset is capable of producing high sound pressure levels Higher volumes or longer durations can damage your hearing Set the volume to a medium level Make sure that you can hear critical sounds such as warning alarms gt Connect the audio cable to the 3 5 mm jack socket on the operating control I and to the corresponding jack socket on your audio player 15 Care and maintenance Cleaning the headset Use a soft slightly damp cloth to clean the headset from time to time If the headset is very dirty use a cloth dampened with mild soapy water Do not use any solvents or cleansing agents CAUTION Danger of short circuit due to the ingress of water Water entering the housing of the headset can cause a short circuit and damage the electronics Replacing the earpads For reasons of hygiene the earpads should be replaced from time to time gt Grasp the edge of the earpad and pull sharply Attach the new earpad to the earcup by pressing firmly around the earpad until you he
5. ar all 12 latches lock into place 16 Accessories and spare parts By changing the cables you can simply retrofit different operating controls see page 8 and 9 or connectors see page 19 to your headset Cable CP Cable V CP Cable B CP Cable BV CP Cable KP Cable V KP Cable B K Cable BV K Cable BV KP Cable NP Cable V RP Cable V KX Audio cable length 0 6 m with two 3 5 mm stereo jack plugs Audio cable length 0 6 m with two 2 5 mm jack plugs Headband padding 1 pair Earpads leatherette 1 pair Earpads leatherette 100 pairs Hygiene pads HZH 26 200 pairs Wind and pop screen 1 item Wind and pop screen any quantity Carry bag Cat Cat Cat Cat Cat Cat Cat Cat Cat Cat Cat Cat Cat Cat Cat Cat Cat Cat Cat Cat Cat No No No No No No No No No No No No No No No No No No No No No 500852 500846 500837 500838 500842 500848 502183 500839 504030 500855 500853 502437 520316 520317 515629 529766 529767 502595 515297 514127 077408 17 Cable clip MZQ 2002 Cat No 044740 Cable clip HZC 08 Cat No 525787 Cable clips HZC 08 MZQ 2002 for round cable only for round or flat cable 18 Product variants OOO III HMEC 26 502397 026 35 HMEC 26 T 502404 026 C5 HMEC 26 CP 502402 026 35 999 3211 3 x HMEC 26 V CP 502405 026 35 999 3251 X X 2 8 HMEC 26 B CP 502398
6. arning alarms Adjusting the microphone sensitivity The microphone sensitivity has been factory pre set to 80 mV Pa as per RTCA DO 214 You can change the microphone sensitivity by turning a small screwdriver in the direction of the arrow The operating controls of the HMEC 26 Operating control I Volume controls O LED NoiseGard ON OFF switch Mono stereo switch BOOM switch L R 3 5 mm jack socket Battery compartment 2 5 mm jack socket Headset with Operating element operating control I 0 8800 0 0 HMEC 26 BV K X 26 X 26 X X x x HMEC 26 B K X X x HMEC 26 B CP X X x HMEC 26 V KP X X X X X HMEC 26 V RP 1 26 V CP X X x HMEC 26 V KX X X X X X 8 Operating control II LED NoiseGard ON OFF switch Headset with Operating element operating control II 066660006 HMEC 26 CP x x HMEC 26 KP x x HMEC 26 NP x Using the headset Switching NoiseGard on off The NoiseGard ON OFF switch allows you to switch the NoiseGard active noise compensation on or off With NoiseGard switched off the headset can be used as a conventional headset gt Set the NoiseGard ON OFF switch to the desired p
7. he TalkThrough function can only be used when the NoiseGard active noise compensation is switched on 13 Connecting a mobile telephone The 2 5 mm jack socket allows you to connect a mobile telephone For this purpose the NoiseGard active noise compensation must be switched on and the microphone connector must be connected to the aircraft radio audio A suitable adapter for your mobile telephone with 2 5mm jack socket is available from your Sennheiser agent CAUTION Danger of accident due to reduced attention Making telephone calls or operating the A mobile telephone limits your attention and may cause accidents During flight operation do not use the headset for telephone calls gt Connect the audio cable to the 2 5 mm jack socket on the operating control I and to the corresponding jack socket on your mobile telephone You can adjust the volume of the mobile telephone via the headset s operating control However the functions of the mobile telephone cannot be controlled via the headset s operating control Operate your mobile telephone as usual and observe the instructions of the manufacturer The latest information on cell phone compatibility is available on the internet site at www sennheiser com Search under Products Aviation and more info 14 Connecting an additional audio player The 3 5 mm jack socket allows you to connect and listen to an audio player not
8. how to clean the headset contact your Sennheiser agent Intended use of the headset Intended use includes having read this instruction manual especially the chapter Safety instructions using the headset in jet aircraft and within the operating conditions as described in this instruction manual Improper use Improper use means using the headset other than as described in this instruction manual or under operating conditions which differ from those described herein The HMEC 26 headset The HMEC 26 headset with NoiseGard active noise compensation features dynamic closed headphones The noise compensating condenser microphone ensures excellent speech transmission even in noisy environments Designed for use in aircraft cockpits Features NoiseGard active noise compensation reduces ambient noise by up to 18 dB consequently the radio volume can be decreased Lightweight Extremely comfortable to wear due to the patented two piece automatic headband and soft earpads Peak level protection cannot be switched off safeguards you from volume peaks above 110 dB Flip away headphone allows single sided listening Flexible microphone boom can be worn on either left or right hand side Noise compensating condenser microphone ensures excellent speech transmission Single sided cable easy to replace With NoiseGard switched off the headset can be used as a conventional headset Power su
9. ointed tool Powering NoiseGard via two rechargeable batteries gt Insert two 1 5 V AA alkaline batteries IEC LR 6 or two 1 2 V AA rechargeable batteries IEC LR 6 Observe correct polarity when inserting the batteries 11 The operating time with batteries rechargeable batteries is approx 60 hours With NoiseGard switched on see page 10 the LED provides information on the remaining battery rechargeable battery capacity LED lights up yellow The battery capacity is sufficient LED lights up red The batteries are flat Replace the batteries Activating the auto shut off function The battery saving auto shut off function automatical ly switches the NoiseGard electronics off when the headset is disconnected from the audio system or when the aircraft avionics are switched off The headset is de livered ex works with the function deactivated You can activate auto shut off as follows gt Set the switch to the position ASO 12 Switching the TalkThrough function on off HMEC 26 T only The headset provides excellent attenuation of ambient noise In order to allow you to communicate undisturbed with your surroundings while wearing the headset the HMEC 26 T features a TalkThrough function gt Press the TalkThrough button to switch the TalkThrough function on The LED lights up Press the TalkThrough button again to switch TalkThrough off Note T
10. osition ON NoiseGard is switched on The LED lights up indicating the battery charge status see page 11 or power supply via the aircraft DC power supply system OFF NoiseGard is switched off The LED is off Adjusting the volume The two slide volume controls allow you to adjust the volume for the left and right channel separately CAUTION Hearing damage due to high volumes This headset is capable of producing high sound pressure levels Higher volumes or longer durations can damage your hearing Set the volume to a medium level Make sure that you can hear critical sounds such as warning alarms gt Use the two volume controls to adjust the desired volume 10 Switching between mono and stereo mode The mono stereo switch allows you to switch between mono O and stereo QD mode depending on the audio system gt Set the mono stereo switch to the desired position mono O or stereo GD Changing the left and right stereo channel The position or L of the BOOM switch corresponds to the position of the microphone on the left or right side of the mouth When the microphone boom is rotated to permit left or right side microphone orientation the BOOM switch allows you to correctly assign the audio channels L R to the appropriate headphone sides This enables the correct orientation of the volume controls and any stereo audio signals To move the BOOM switch use a p
11. pply for NoiseGard from aircraft DC power supply system on suitably equipped aircraft or batteries rechargeable batteries Auto shut off extends battery life TalkThrough function HMEC 26 T only ETSO approval C57a C58a Delivery includes 1 HMEC 26 headset 1 cable clip 1 wind and pop screen 1 instruction manual 1 carry bag 1 EASA Form 1 Operation Turning the microphone boom The microphone boom can be rotated This allows the headset to be worn with the microphone boom positioned on either the left or right hand side of the head Putting on the headset When putting on the headset the patented two piece headband adjusts automatically Positioning the microphone Bend the flexible microphone boom so that the micro phone is placed at the corner of the mouth Maintain a distance of approx 2 cm between microphone and mouth Always use the supplied wind and pop screen Flipping away one earcup The headset features a flip away earcup for single sided listening Adjusting the volume directly on the audio system Connect the headset to the corresponding sockets of your audio system Adjust the volume directly on the audio system CAUTION Hearing damage due to high volumes This headset is capable of producing high sound pressure levels Higher volumes or longer durations can damage your hearing Set the volume to a medium level Make sure that you can hear critical sounds such as w
12. t assigned 2 Microphone Hi 3 Audio Lo DC 3 Microphone Lo HMEC 26 V KP BV KP 1 Audio Hi left 1 NoiseGard DC 2 Audio Hi right 2 Microphone Hi 3 Audio Lo DC 3 Microphone Lo DC HMEC 26 B K 1 Audio Hi 1 not assigned 2 not assigned 2 Microphone Hi 3 Audio Lo 3 Microphone Lo HMEC 26 BV K 1 Audio Hi left 1 not assigned 2 Audio Hi right 2 Microphone Hi 2 Audio Lo 2 Microphone Lo 23 Manufacturer Declarations Warranty Sennheiser electronic GmbH amp Co KG gives a warranty of 5 years on this product For the current warranty conditions please visit our web site at www sennheiser com or contact your Sennheiser partner CE Declaration of Conformity C This equipment is in compliance with the essen tial requirements and other relevant provisions of Directive 2004 108 EU The declaration is avail able on the internet site at www sennheiser com Before putting the device into operation please observe the respective country specific regulations 24 Y SENNHEISER Sennheiser electronic GmbH amp Co KG Printed in Germany Am Labor 1 30900 Wedemark Germany Publ 01 09 www sennheiser com 523983 A01
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