ELECTRONICA-Technologies
Rev. January 2017
Series 9000 AUDIOMETERS
Audiometer 9910
Version EN1_H
Page 27
7.
Technical data
7.1.
Tone frequency and output capacities
Hz
125
250
500
750
1K
1.5K
2K
3K
4K
6K
8K
Min
(HLdB)
-10
Max
(HLdB)
70
90
100
90
The sound levels are expressed in HLdB, i.e. Hearing Level in decibels. This is what is
known as a compensated curve, where "0 dB" for each of the frequencies corresponds to
the minimum hearing threshold of an otologically healthy subject (definition according to
standard EN 60645-1). The sound levels can be adjusted in 5dB steps.
7.2.
Tone presentation
Digitally controlled pure sine tone- continuous or pulsed mode.
Silent pushbutton controlled left/right side delivery.
7.3.
Sound output
6.35 mm stereo jack(1/4 inch).
7.4.
Patient feedback (Accessory as an option)
Via a pushbutton, which is connected via a 1.2 meter lead to a 3.5 mm jack
7.5.
Power supply
Standard: external power adapter supplied with the device (100-250 V~/15V - 500
mA minimum, EN60601-1). Only use the custom power adapter contained into
the carry-case.
Optional feature: NiMh battery cell.
- operating life of over 10 hours under normal conditions of use.
- battery cell requiring no specific handling other than charge-up.
- recharge time: 4½ hours maximum (if the battery is completely discharged).
-Lifetime: The battery can be charged up 1000 times approximately.
-The voltage threshold indicating that the battery must be rechargeable, is 8V.If the
battery is discharged, display screens “4” and “7” are flashing, displaying “Battery”
when attempting to press a key.
7.6.
Calibration
Via air conduction according to standard ISO 389-1
7.7.
Environmental performance conditions
Storage temperature: -10° to 60°C
Working temperature: 15° to 35°C
Relative humidity: between 30% and 90%
Air pressure: 98kPa to 104 kPa