AVAILABLE SIGNALS
Stimulus: pure tone, warble tone
Masking: NBN, WN
SIGNALS SPECIFICATION
Attenuator step: 5 dB
Presentation: Continuous, Pulsed (0.5, 1 and 2 Hz)
Warble: 5 Hz sin wave modulating signal
AVAILABLE OUTPUTS AND TRANSDUCERS
AC: TDH-39 / DD45 headphones, ER-3 / IP30 insert earphones
BC: B-71 bone vibrator (Plus only)
Insert masking earphone: IME-100 (Plus only)
AVAILABLE TESTS
Pure Tone audiometry
Auto threshold (modified Hughsone-Westlake)
CALIBRATION
Validity: 12 months
All the parameters set through the device software
COMPUTER INTERFACE
Connection: USB (driverless)
Compatible software: Inventis Maestro
HYBRID TECHNOLOGY
Description: Bell can be controlled either as a stand-alone or as a
PC-controlled audiometer
It requires Inventis Maestro software.
DISPLAY
Shows the complete audiogram during the test
Type: Graphical colour TFT LCD
Size: diagonal 4.3”, 95 mm x 54 mm
Resolution: 480 x 272
POWER SUPPLY
Maximum consumption: 8 Watts
Power supply: 6V, 2A cont., through an external medical grade 100-
240 Vac 50/60 Hz power supply
MECHANICS
Size (WxDxH): 32 x 32 x 9 cm / 12.6 x 12.6 x 3.5 in
Weight: 1.8 Kg / 4.0 lbs
FREIGHT PACKING
Size (WxDxH): 47 x 40 x 35 cm / 18.5 x 15.8 x 13.8 in
Gross weight: 4.2 Kg / 9.3 lbs
APPLICABLE STANDARDS
Pure tone audiometry: IEC 60645-1, ANSI S3.6
Calibration: ISO 389-1 (TDH 39 and DD45), ISO 389-2 (ER-3, IP30,
ER-5), ISO 389-3 (B71)
Electrical safety: IEC 60601-1, Class I type BF
EMC: IEC 60601-1-2
CE CERTIFICATE
MDR 2017/745/EU Classification: Class IIa
Classification rule (Annex VIII, 2017/745): 10
Notified body: TÜV SÜD Product Service GmbH (0123)
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