Beyerdynamic HS 800 Digital User manual

HS 800 Digital
HS 800 Digital Rotor
HS 800 Digital 6pin
PRODUKTINFORMATION
PRODUCT INFORMATION

Contents
1. Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2. Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3. DANR Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.1 Active Noise Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.2 Digital Adaptive Noise Reduction DANR . . . . . . . . . . . . . . . . . . . . 25
4. Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.1 How to store and maintain the HS 800 Digital . . . . . . . . . . . . . . . 26
4.2 How to prepare the Headset for Use . . . . . . . . . . . . . . . . . . . . . . 26
4.2.1 Adjusting the Headband . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.2.2 Adjusting the Microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.3 How to use the Audio Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.3.1 Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.3.2 Volume Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.3.3 Mono/Stereo Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.3.4 On/Off Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.3.5 Auto-Mute Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5. How to connect external Devices to the Audio Box . . . . . . . . . . . 30
5.1 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.2 Music Players . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.2.1 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.2.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.3 Mobile Phones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.3.1 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.3.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6. How to insert/replace the Batteries. . . . . . . . . . . . . . . . . . . . . . . . 31
7. Power Supply via the Aircraft Systems . . . . . . . . . . . . . . . . . . . . . 32
20 | 21
english

7.1 HS 800 Digital and HS 800 Digital Rotor . . . . . . . . . . . . . . . . . . . 32
7.2 HS 800 Digital 6pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8. How to replace the Ear Pads. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
10. Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
11. Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
12. Supplied Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
13. Spare Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
14. Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
15. Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
16. Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Frequency Response Curve, Polar Pattern. . . . . . . . . . . . . . . . . . . . . . . . . 38
EC-Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
22 | 23
english

PRODUCT INFORMATION
HS 800 Digital / HS 800 Digital Rotor / HS 800 Digital 6pin
Thank you for selecting the HS 800 Digital aviation headset. Please take some time to read
carefully through this product information before using the headset.
1. Safety Information
When using the HS 800 Digital headset, typical aircraft sounds (e.g. those from engines,
propellers, warning alarms etc.) may sound different to you. Before operating the aircraft, please
make sure that you can hear and recognise these sounds. Set the volume to safe levels that do
not interfere with your ability to hear important sounds and warning alarms.
2. Applications
The HS 800 Digital is an aviation headset which has a closed design to meet high standards.
3. DANR Function
Noise affects the ability to concentrate and the consciousness of situations: properties which
are important for your safety when flying! Permanent noise can even damage your hearing.
3.1 Active Noise Reduction
The function of the active noise reduction is based on the principle of the phase inverse sound.
In standard analogue ANR headsets, small microphones in the ear cups receive the noise and an
analogue filter circuit (NC filter) produces an audio signal with inverse wave shape - phase
inverse. The original noise is superimposed by the phase inverse audio signal and reduced: The
ear drum receives less noise.
The active noise reduction is especially effective in the deep frequency range (25 to 500 Hz).
With higher frequencies it is less effective. This is the reason why a headset often provides a
combination of active and passive hearing protection.
3.2 Digital Adaptive Noise Reduction DANR
Active noise reduction on an analogue basis for Aviation headsets has been existed for more than
20 years. A headset with analogue active noise reduction starts working after switching it on.
The properties of the analogue filter always remain the same independent on the acoustic
surrounding. Therefore, an analogue active headset cannot adapt to modified acoustic situations.
This applies the advantages of the digital signal processing. The NC filter has been programmed
as a software algorithm and processes digitalised audio signals on a micro processor. In addition
to a more precise result the main advantage is, that it intelligently reacts to various acoustic
surroundings. This includes an automatic activation when the engine is started and an adaption
to peaks, which are typical for engine noise. An analogue NC filter cannot differ between very
loud and quiet frequencies.
Note:
As DANR is activated automatically when the engine is started you will not notice any
noise reduction and background noise when the DANR function is activated with
normal ambient noise. You can check the DANR function when you deactivate the
DANR function during the flight.
24 | 25
english
1. Original noise 2. Audio signal with
inverse wave shape
– phase inverse
3. The original noise is
superimposed by
the phase inverse
audio signal and
reduced: The ear
drum receives less
noise.

4. Usage
4.1 How to store and maintain the HS 800 Digital
It is best to store the headset in the supplied padded leather bag. While storing the headset
make sure that it is not exposed to extreme temperatures, humidity or direct sunlight. Use
a soft cloth when cleaning the HS 800 Digital. For the leather pads, you should use an
appropriate leather care cleaner. Do not immerse the headset in water.
4.2 How to prepare the Headset for Use
4.2.1 Adjusting the Headband
For best comfort and noise attenuation, the headband has to be adjusted to fit your head
properly.
Wear the headset so that the headband runs over the top of your head and adjust the headband
so that
• your ears are completely enclosed by the ear cushions,
• you feel a gentle pressure around your ears,
• both ends of the headband have the same length to ensure a proper fit
4.2.2 Adjusting the Microphone
• Place the wind shield onto the microphone and make sure that the microphone is completely
enclosed.
• Bend the flexible gooseneck so that the microphone is placed about 2 cm in front of the
middle of your mouth. In order to avoid overstretching and premature wear and tear never
bend the gooseneck more than 90°.
• Turn the microphone holder (not the gooseneck!)
to position the microphone on the left or right
hand side of the mouth.
• Adjust the gain of the microphone via a
potentiometer by using the supplied small
screwdriver (refer to the illustration).
• At the factory a high gain has been set. The
gain is reduced by turning the potentiometer
to the left.
26 | 27
english