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A comprehensive Operating and Service Manual. All schematics are complete and easy to read. The PCB drawings and complete parts list are very helpful. I would definitely recommend this manual.
HDA 200 Audiometric Headphone
Closed dynamic headphones designed for extended high frequency testing.
Features � � � � � �
Excellent passive attenuation (based on Peltor TM Ear Defenders) Very high quality sound reproduction Convenient single sided cable Padded headband and additional adjustable/removable cushions for increased comfort Soft, replaceable circumaural ear pads Color coded ear cups, right (red) left (blue)
Technical Data
Frequency response PTB calibrated Transducer principle Nominal impedance Characterisitic SPL Max permanent load Coupling Caliper pressure Weight (with cable) Cable approx. 3 m, Connection
< 20 to > 20,000 Hz
see table dynamic, closed 40 Ohm 100 dB at 1 kHz, 1 mW 500 mW circumaural 10 N 330 g single-sided, open-ended yellow + L black �L red +R white �R
HDA200 is PTB approved. Physikalisch-Technische Bundesanstalt, Braunschweig, Germany. PTB is equivalent to the National Bureau of Standards.
Standard SPL Passive frequencies (dB 20µPa) attenuation (Hz) @ .5 Vrms (dB) 125 250 500 750 1,000 2,000 3,000 4,000 5,000 6,000 8,000 9,000 10,000 11,200 12,500 14,000 16,000 112.5 113.0 112.0 111.0 108.5 104.0 104.0 104.0 106.5 107.5 105.5 105.0 102.5 102.0 103.0 98.5 100.0 14.3 15.9 22.5 28.6 32.0 45.7 43.8 -
Maximum SPL (<10 min. @ 5 V RMS) 132 ± 3 132 ± 3 132 ± 3 131 ± 3 129 ± 3 124 ± 3 124 ± 3 124 ± 3 127 ± 3 125 ± 3 125 ± 5 123 ± 5 122 ± 5 123 ± 5 118 ± 5 119 ± 5 120 ± 5
HDA 200 Frequency Response Test Conditions � All measurements are done on a calibrated coupler B&K 4153 (artificial ear) with the standard cone YJ0304 above the adapter plate, type DB 0843.
� The pressure of the headband shall be 10N ± 1N. � The RMS input voltage to the headphone is 0.5 V. � The measurements are done with steady state sine
wave signals.
� The output impedance of the signal source shall be
<1 Ohm.
� Climatic conditions:
Temperature Humidity Atmospheric pressure T=20º C H=50%rel P=approx. 100kPa
All data are influenced by temperature, humidity and static pressure.
Sennheiser Electronic Corporation One Enterprise Drive PO Box 987, Old Lyme, CT 06371 Tel: 860-434-9190 Fax: 860-434-1759 Web site: www.sennheiserusa.com
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