Home Diagnostic Audiometer R 27 A


TEST TYPES
• Pure Tone test, Autothreshold, ABLB, Speech Test, Stenger,GAP, DLF
USER INTERFACE
• Multilingual
PRINTER
• Built-in fast thermal printer with paper width: 112 mm supplied as standard part
REPORTS
• Printed on thermal printer
•.pdf report created directly from the device and stored on USB Pen drive with possibility to add patient data and tests comments via the USB Keyboard (optional)
• Data transfer to PC using Resonance Management Data
Suite
COMMUNICATION PORT
• Nr.1 USB host type A • Nr.1 USB slave type B WINDOWS® COMPATIBLE SOFTWARE
• Resonance MDS Management Data Suite
RANGE
• Frequency range:
125 – 8000 Hz (with DD45)
125 – 12500 Hz (with HDA280)
250 – 8000 Hz (with B71-W)
ACCURACY
• Frequency < 0,5%
• Distortion < 1%
• Attenuator linearity 1dB per 5dB step,
max 3dB whole range
• Range stimuli level -10 up to 120 dB HL
TYPE OF SIGNALS
• Pure tone: sine wave
• Warble: ± 5% frequency sine wave modulated, modulation: sine wave 5 Hz
• Narrow band noise: 24dB/oct filtered noise
• Speech noise: 1khz 12dB/oct filtered noise
• White noise
• External signal
• External mike
• Speech material recorded on SD card
• On/Off rise – fall time: 40msec
OUTPUT TRANSDUCERS
• ACR, ACL: 10 ohm DD45 matched pair earphone, (alternatively HDA280 Sennheiser, Insert earphones)
• BC: B71W Radioear; B81 (optional)
• Free field output: 600 ohm impedance
STIMULUS PRESENTATION MODALITY
• Presentation: Normal, Reverse, Extended (present tone for 1 second from 20dB below the maximum level)
• Modality: Continuous, Pulsed (rate 0,5; 1 and 2 Hz), Alternated (ABLB –  0,5, 1 and 2 Hz) 
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