Piston PDD-401, Руководство по эксплуатации

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Electrical data
Technical specifications - 39
With this symbol the B type patient circuit is labelled which
complies with the EN 60601-1;1997 standard, especially
with the leakage current.
Electrical data
The electrical data of the applied PC and printer are available
in their Users’ manual.
Audiometer (PDD 401):
Current consumption from the USB port:...........max. 190 mA
Mechanical data
Audiometer interface unit (PDD-401):
Width:....................................................................... 82 mm
Depth: ..................................................................... 150 mm
Height: ...................................................................... 45 mm
Weight: ........................................................................960 g
General values
Earphones: ...............................................................TDH 39
Attenuation of headset:............................................... 40 dB
Expected lifetime: ......................................................... 5 év
Step of sound pressure: ................................................ 5 dB
Frequencies: ............. 125Hz, 250Hz, 500Hz, 750Hz, 1kHz
1,5kHz, 2kHz, 3kHz, 4kHz, 6kHz, 8kHz
Volume range: ................................ -10dB HL, +110dB HL
Guaranteed values
Total harmonic distortion:........................................... < 1%
Frequency accuracy: ....................................................
±
1%