Sennheiser HDA 280 Manuel utilisateur
HDA 280
Audiometrie-Kopfhörer
Die Bauart des HDA 280 ist von der Physikalisch-Technischen
Bundesanstalt geprüft. Der Kopfhörer entspricht IEC 60645-1.
Wichtig!
Der HDA 280 ist für den Betrieb mit einem Audiometer be-
stimmt! Beim Austausch von Audiometrie-Kopfhörern muss das
Audiometer neu kalibriert werden!
Frequenzgang
Messung auf B&K 4152 nach IEC 60318-3
Kopfhörer-Eingangsspannung 500 mVeff
+90
+140
+95
+100
+105
+110
+115
+120
+125
+130
+135
100 10k200 500 1k 2k 5k
Hz
dBr
Technische Daten
gemessen bei Normal-Klima: Temperatur = 20 °C,
Luftfeuchte = 50 % (rel.), Atmosphärendruck ca. 100 kPa
Art.-Nr. 9860 1 Stck.
9861 24 Stck./Karton
Wandlerprinzip dynamisch, geschlossen
Ankopplung an das Ohr supraaural
Übertragungsbereich < 20 Hz bis > 20 kHz
Kennschalldruckpegel 117 dB (bei 1 kHz, 1 mW)
Max. L/R-Abweichung 125 Hz – 4 kHz < 1,5 dB
4 kHz – 12 kHz < 2 dB
Max. Nenn-Dauer-
eingangsleistung
500 mW (nach EN 60268-7)
Nennimpedanz 37 Ω
Bügel-Andruckkraft 5 N ± 0,5 N
Anschlusskabel ca. 3 m lang, offenes Kabelende
Gewicht (mit Kabel) 330 g
Anschlussbelegung grün + L
kupfer – L
rot + R
kupfer – R
Reinton-Bezugs-Schwellenschalldruckpegel
Äquivalenter Bezugs-Schwellenschalldruckpegel (re 20 µPa) für
den Kopfhörer HDA 280 und einen Kuppler nach IEC 60318-3
* zusätzliche Angaben angelehnt an ISO 389-1
Spitzen-Tal-Bezugs-Schwellenschalldruckpegel
Für Clicks, 20 Hz
– an Ohrsimulator nach IEC 60318-1 und
– an akustischem Kuppler nach IEC 60318-3
pe RETSPL = 31,5 dB (re 20 µPa).
Reinton-Bezugs-Schwellen-
schalldruckpegel
Max. Schalldruckpegel
an B&K 4152 < 10 Min.
Frequenz (Hz) dB (re 20 µPa) dB (bei 4 V)
125 38,5 143 ± 3
250 25,0 144 ± 3
500 13,0 144 ± 3
750 9,0 144 ± 3
1000 7,5 145 ± 3
1500 9,5 145 ± 3
2000 8,0 138 ± 3
3000 6,5 133 ± 3
4000 9,5 137 ± 3
6000 19,0 132 ± 5
8000 18,0 122 ± 5
10000 18,5 110 ± 5
12500 30,5 122 ± 5
*
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Audiometric headphones
Design approved by the PTB (German national institute for
science and technology).
The headphones comply with IEC 60645-1.
Important!
The HDA 280 is designed for use with an audiometer!
After exchanging audiometric headphones, the audiometer has
to be re-calibrated!
Pure tone RETSPL
Reference equivalent threshold sound pressure level (re 20 µPa)
for the HDA 280 headphones and a coupler as per IEC 60318-3
* additional values following ISO 389-1
Peak-to-peak RETSPL
For clicks, 20 Hz
– on an ear simulator as per IEC 60318-1 and
– on an acoustic coupler as per IEC 60318-3
pe RETSPL = 31.5 dB (re 20 µPa).
Pure tone reference equivalent
threshold sound pressure level
Max. SPL
on B&K 4152 < 10 min.
Frequency (Hz) dB (re 20 µPa) dB (at 4 V)
125 38.5 143 ± 3
250 25.0 144 ± 3
500 13.0 144 ± 3
750 9.0 144 ± 3
1000 7.5 145 ± 3
1500 9.5 145 ± 3
2000 8.0 138 ± 3
3000 6.5 133 ± 3
4000 9.5 137 ± 3
6000 19.0 132 ± 5
8000 18.0 122 ± 5
10000 18.5 110 ± 5
12500 30.5 122 ± 5
Frequency response curve
Measured with B&K 4152 as per IEC 60318-3
Headphone input voltage 500 mVrms
+90
+140
+95
+100
+105
+110
+115
+120
+125
+130
+135
100 10k200 500 1k 2k 5k
Hz
dBr
Specifications
measured at normal climate: temperature = 20 °C,
relative humidity = 50 %, atmospheric pressure approx. 100 kPa
Cat. No. 9860 1 unit
9861 24 units/carton
Transducer principle dynamic, closed
Ear coupling supra-aural
Frequency response < 20 Hz to > 20 kHz
Characteristic SPL 117 dB (at 1 kHz, 1 mW)
Max. L/R deviation 125 Hz – 4 kHz < 1.5 dB
4 kHz – 12 kHz < 2 dB
Max. nominal continuous
input power
500 mW (as per EN 60268-7)
Nominal impedance 37 Ω
Contact pressure 5 N ± 0.5 N
Connection cable approx. 3 m, open-ended
Weight (with cable) 330 g
Connection code green + L
copper – L
red + R
copper – R
*
HDA 280
Cleaning the headphones
To clean the headphones, use a soft, damp cloth. If necessary, the headphones can be cleaned with
a cloth that has been dipped in soapy water (use a mild cleanser such as washing-up liquid).
Note!
Do not immerse the headphones in water or allow the capsules to become wet.
Never use solvent-containing cleansers.
Available accessories and spare parts
yEar cushions
yHeadband padding
yConnecting cable
Replacing the ear cushions
왘Grasp behind the ear cushions and pull them up and away from the earcups.
왘Slide the new ear cushions onto the earcups.
Replacing the headband padding
왘Pull the Ziploc type fastening strips of the headband padding apart, as shown in the diagram
on the left, and remove the worn headband padding.
왘Put the new headband padding around the headband.
왘Pull the two edges of the headband padding together so that the fastening strips slightly
overlap.
왘Join the fastening strips.
Replacing the connecting cable
왘Remove the ear cushion. Grasp behind the ear cushion and pull it up and away from the earcup.
왘Loosen the screw and remove it.
왘Remove the cover from the earcup .
왘Pull the connector out of the socket.
왘Remove the strain relief of the connecting cable from the holding device .
왘Insert the strain relief of the new connecting cable into the holding device.
왘Plug the connector of the new connecting cable into the socket as shown in the diagram on
the left.
왘Put the cover back onto the earcup .
왘Replace the screw and tighten it.
왘Slide the ear cushion onto the earcup.
Sennheiser electronic GmbH & Co. KG
30900 Wedemark, Germany
www.sennheiser.com
Telefon +49 (5130) 600-0
Telefax +49 (5130) 600-300
Printed in Germany
92106 Publ. 06/03
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