Bedienungsanleitung
Instructions for use
Notice d’emploi
Istruzioni per l’uso
Instrucciones para el uso
Gebruiksaanwijzing
HMEC 46
Safety instructions
y Please read these instructions carefully and
completely before using the headset.
y Make these instructions easily accessible to all users
at all times.
y Always include these instructions when passing the
headset on to third parties.
y During flight operation, do not use the headset for
telephone calls.
y 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.
y 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!
y Never repair or attempt to repair a defective headset
yourself. Contact your Sennheiser agent or the
Sennheiser Service Department.
1
y 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.
y Protect the headset from humidity. Use only a slightly
damp cloth to clean the headset. For information on
how to clean the headset, contact your Sennheiser
agent.
Intended use of the headset
Intended use includes:
• having read these instructions especially the chapter
“Safety instructions”.
• use of the headset in jet aircraft and within the
operating conditions as described in these
instructions.
Improper use
Improper use means use of the headset other than as
described in these instructions or use under operating
conditions different from those described in these
instructions.
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The HMEC 46 headset
The HMEC 46 headset with NoiseGard™ active noise compensation features dynamic, open headphones. The
noise-compensating condenser microphone ensures excellent speech transmission even in noisy environments.
Designed for use in aircraft cockpits.
Features
y NoiseGard™ active noise compensation reduces ambi-
ent noise by approx. 10 dB – consequently the radio
volume can be decreased
y Extremely lightweight
y Extremely comfortable to wear due to the patented
two-piece automatic headband and soft ear pads
y Peak level protection safeguards you from volume
peaks above 110 dB
y “Flip-away” headphone allows single-sided listening
y Flexible microphone boom, can be worn on either left
or right-hand side
y Noise-compensating condenser microphone ensures
excellent speech transmission
y Single-sided cable, easy to replace
y With NoiseGard™ switched off, the headset can be
used as a conventional headset
y Power supply for NoiseGard™ from aircraft DC power
supply system (on suitably equipped aircraft) or
batteries/rechargeable batteries
y “Auto shut-off” extends battery life
y ETSO/TSO approval C57a/C58a
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Delivery includes
y HMEC 46 headset
y Cable clip
y Wind and pop screen
y Instructions for use
y Carry bag
y 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.
4
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 microphone is placed at the corner of the mouth. Maintain a
distance of approx. 2 cm between microphone and mouth.
5
Flipping away one earcup
The headset features a “flip-away” earcup for singlesided listening.
Adjusting the volume directly on the intercom
Connect the headset to the corresponding sockets of your
intercom. Adjust the volume directly on the intercom.
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.
6
Adjusting the microphone sensitivity
The microphone sensitivity has been factory pre-set to
40 mV/Pa as per RTCA DO-214. You can change the
microphone sensitivity by turning a small screwdriver in
the direction of the arrow.
+
–
7
The operating controls of the HMEC 46
Operating control I
Volume controls
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
HMEC 46-BV-K xxxxxxxx
HMEC 46-BV-CP x x x x x
HMEC 46-B-K x x x
HMEC 46-B-CP x x x
HMEC 46-V-KP xxxxx
HMEC 46-V-RP xxxxx
HMEC 46-V-CP x x x x
8
Operating control II
LED
NoiseGard™ ON/OFF
switch
Headset with
Operating element
operating
control II
HMEC 46-CP x x
HMEC 46-KP x x
HMEC 46-NP x x
9
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.
왘 Set the NoiseGard™ ON/OFF switch to the desired
position:
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.
왘 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 (
) and stereo () mode, depending on the
intercom system.
왘 Set the mono/stereo switch to the desired
position: mono (
) or stereo ().
Changing the left and right stereo channel
The position “R” 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 pointed tool.
Powering NoiseGard™ via two (rechargeable) batteries
왘 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. 100 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 automatically switches the NoiseGard™ electronics off when the
headset is disconnected from the intercom or when the
aircraft avionics are switched off. The headset is delivered
ex-works with the “auto shut-off” function deactivated.
You can activate “auto shut-off” as follows:
왘 Set the switch to the position ASO.
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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/
intercom. A suitable adapter for your mobile telephone
with 2.5 mm jack socket is available from your Sennheiser
agent.
CAUTION!
Danger of accident due to reduced attention!
Making telephone calls or operating the
mobile telephone limits your attention and
may cause accidents.
During flight operation, do not use the headset for telephone calls!
왘 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.
왘 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.
왘 Search under “Products”, “Aviation” and “more info
…”.
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Connecting an additional audio player
The 3.5 mm jack socket allows you to connect and
listen to an audio player (not 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.
왘 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.
14
Care and maintenance
C
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.
AUTION!
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.
Use only a slightly damp cloth to clean the
headset. Do not use any solvents or cleansing
agents.
Replacing the earpads
For reasons of hygiene, the earpads should be replaced
from time to time. Grasp the edge of the foam earpad
behind the earcup as shown and peel it up and away from
the earcup. Slide the new earpad onto the earcup. Repeat
for the other earcup.
15
Accessories and spare parts
By changing the cables, you can simply retrofit different
operating controls (see “The operating controls of the
HMEC 46” on page 8 and 9) or connectors (see “Product
variants” on page 17) to your headset.
y Cable -CP Cat. No. 500852
y Cable -V-CP Cat. No. 500846
y Cable -B-CP Cat. No. 500837
y Cable -BV-CP Cat. No. 500838
y Cable -KP Cat. No. 500842
y Cable -V-KP Cat. No. 500848
y Cable -B-K Cat. No. 502183
y Cable -BV-K Cat. No. 500839
y Cable -NP Cat. No. 500855
y Cable -V-RP Cat. No. 500853
y Audio cable, length 1.4 m,
with two 3.5 mm stereo jack plugs Cat. No. 520316
y Audio cable, length 1.4 m,
with two 2.5 mm jack plugs Cat. No. 520317
y Cable clip Cat. No. 044740
y Earpads (1 pair) Cat. No. 515295
y Earpads (100 pairs) Cat. No. 515296
y Wind and pop screen Cat. No. 515297
y Wind and pop screen
(any number of items) Cat. No. 514127
y Headband padding (1 pair) Cat. No. 515629
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Product variants
Model Cat. No.
Part Number
HMEC 46 500854
046-35
HMEC 46-CP 500472
046-35-999-3211
HMEC 46-V-CP 500473
046-35-999-3251
HMEC 46-B-CP 500478
046-35-999-2291
HMEC 46-BV-CP 500479
046-35-999-2281
HMEC 46-KP 500475
046-35-999-3111
HMEC 46-V-KP 500476
046-35-999-3161
xx x x
xx x x
xx xxx
xx xxx
xxxxx
xxx xx
HMEC 46-B-K 502180
046-35-999-1191
HMEC 46-BV-K 500477
046-35-999-1171
HMEC 46-NP 500474
046-35-999-3811
HMEC 46-V-RP 500471
046-35-999-3661
Single-sided round cable, length 1.85 m
XLR-5 connector
¼“ (6.3 mm) jack plug (headphones)
PJ-068 equivalent (microphone)
8-pin Neutricon connector
6-pin Redel connector
Aircraft powered
xxx xx
xxx xx
xxxx
xxxx
Battery powered
Operating control I (see page 8)
Operating control II (see page 9)
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Specifications
Headphones
Transducer principle dynamic, open
Ear coupling supra-aural
Frequency response 20–14,000 Hz
Impedance 600 Ω / 1.200 Ω
mono/stereo
Characteristic SPL 93 dB SPL at 1 kHz, 1 mW,
mono
95 dB SPL at 1 kHz, 1 V
Active attenuation ≥ 10 dB (300–700 Hz)
THD < 10 % at 110 dB SPL
(300–3,000 Hz)
Contact pressure approx. 3 N
Microphone incl. preamplifier
Type MKE 46
Transducer principle pre-polarized condenser
microphone,
noise-compensating
Frequency response 350–6,000 Hz
Output voltage adjustable from 17–100 mV/Pa,
40 mV/Pa (factory pre-set)
= 400 mV at 114 dB SPL
Terminating impedance 150–2,200 Ω
Supply voltage 8–16 V DC
18
General data
Temperature range Operation: –15 °C to +55 °C
Storage: –55 °C to +70 °C
Weight without cable approx. 150 g
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)
or
12–35 V DC via the aircraft
DC power supply system
(on suitably equipped aircraft),
max. 50 mA
19
Connector assignment
HMEC 46-CP, -V-CP, -B-CP, -BV-CP
Solder side
1
3
2
1
4
5
HMEC 46-NP
Solder side
Audio Hi
2
Audio Lo / DC–
3
Microphone Hi
4
Microphone Lo
5
Power supply NoiseGard
TM
(DC+)
1 Audio Hi
2 Audio Lo
3 not assigned
4 Microphone Lo
5 Microphone Hi
6 not assigned
7 DC–
8 Power supply NoiseGard
HMEC 46-V-RP
Solder side
1 Power supply NoiseGard
1
2
3
6
4
2 Audio Lo / DC–
3 Audio Hi left
5
4 Audio Hi right
5 Microphone Hi
TM
(DC+)
TM
(DC+)
6 Microphone Lo
20
HMEC 46-KP, -V-KP, -B-K, -BV-K
1/4" (6.3 mm) jack plug PJ-068 equivalent
12 3
12 3
HMEC 46-KP
1 Audio Hi left 1 Power supply NoiseGard™ (DC+)
2 not assigned 2 Microphone Hi
3 Audio Lo / DC– 3 Microphone Lo / DC–
HMEC 46-V-KP
1 Audio Hi left 1 Power supply NoiseGard™ (DC+)
2 Audio Hi right 2 Microphone Hi
3 Audio Lo / DC– 3 Microphone Lo / DC–
HMEC 46-B-K
1Audio Hi 1not assigned
2 not assigned 2 Microphone Hi
3Audio Lo 3Microphone Lo
HMEC 46-BV-K
1 Audio Hi left 1 not assigned
2 Audio Hi right 2 Microphone Hi
2Audio Lo 2Microphone Lo
21
Manufacturer Declarations
Warranty regulations
The guarantee period for this Sennheiser product is 60 months from the
date of purchase. Excluded are accessory items, rechargeable or
disposable batteries that are delivered with the product; due to their
characteristics these products have a shorter service life that is
principally dependent on the individual frequency of use.
The guarantee period starts from the date of original purchase. For this
reason, we recommend that the sales receipt be retained as proof of
purchase. Without this proof (which is checked by the responsible
Sennheiser service partner) you will not be reimbursed for any repairs
that are carried out.
Depending on our choice, guarantee service comprises, free of charge,
the removal of material and manufacturing defects through repair or
replacement of either individual parts or the entire device.
Inappropriate usage (e.g. operating faults, mechanical damages,
incorrect operating voltage), wear and tear, force majeure and defects
which were known at the time of purchase are excluded from guarantee
claims. The guarantee is void if the product is manipulated by nonauthorised persons or repair stations.
In the case of a claim under the terms of this guarantee, send the device,
including accessories and sales receipt, to the responsible service
partner. To minimise the risk of transport damage, we recommend that
the original packaging is used. Your legal rights against the seller,
resulting from the contract of sale, are not affected by this guarantee.
The guarantee can be claimed in all countries outside the U.S. provided
that no national law limits our terms of guarantee.
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CE Declaration of Conformity
This equipment is in compliance with the essential requirements and other relevant provisions of Directive 89/336/EU.
The declaration is available on the internet site at
www.sennheiser.com.
Before putting the device into operation, please observe the respective
country-specific regulations!
Batteries or rechargeable batteries
The supplied batteries or rechargeable batteries can be recycled. Please dispose of them as special waste or return them
to your specialist dealer. In order to protect the environment,
only dispose of exhausted batteries.
23
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Sennheiser electronic GmbH & Co. KG
30900 Wedemark, Germany
Phone +49 (5130) 600 0
Fax +49 (5130) 600 300
www.sennheiser.com
Printed in Germany Publ. 01/07 515805/A01
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