General Specifications
DIMENSIONS AND WEIGHT
• L x W x H: 370 x 290 x 180 mm
• Net weight: 3.5 kg
TEST TYPES
• Tympanometry: Automatic Tympanometry, Acoustic
Reflex, Reflex Decay, Quick test: check, screening and Decay,
Acoustic Reflex Latency Test (ARLT), Multifrequency
Timpanometry*, ETF (Intact, Perforated and Patulous),
Special tests (Growht-DLI and Non acoustic)
• Audiometry: Pure Tone test, Autothreshold, ABLB, Speech
Test, Stenger, DLI, SISI, Bekesy, Tone Decay, MLB, Multifrequency,
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
Tympanometry Specifications
PROBE TONE
• 226 Hz for Admittance (Y) curve tympanometry
• 1000 Hz for Admittance (Y) curve tympanometry with
added Susceptance (B) and Conductance (G) curves*
INTENSITY
• 226 Hz: 85 dB SPL ± 2 dB
• 678, 800 and 1000 Hz: 75 dB SPL ± 2 dB*
• Frequency Accuracy: ± 0.5%
• Harmonic distortion: Less than 1%
ADMITTANCE MEASUREMENTS
• Compliance range at 226 Hz: 0.05 up to 7 ml
• 678, 800 and 1000 Hz: 0 to +25 mmho*
• Sensitivity scale: Autoscale to appropriate range;
available scale at 226 Hz: 1.5, 2, 5 or 7 ml
• Sensitivity scale HF: Autoscale to appropriate
range, available scales at 678, 800 and 1000 Hz:
5, 10, 15, 20, 25 mmho*
AIR PRESSURE
• Control: Automatic and Manual
• Range: from +400 up to -600 daPa adjustable in 50 daPa steps
• Sweep rate: 50, 100, 200, 300 daPa/sec and automatic
• Indicator: Measured value is displayed
• Safety limitations: -800 up to +600 daPa
EUSTACHIAN TUBE FUNCTION
• ETF test for use with both intact and perforated eardrums
• Also available test for patulous tympanic membrane
ACOUSTIC REFLEX TESTS
• Reflex test method: Threshold , Automatic, Manual
• Stimulus duration: 0.5 , 1 or 2 sec.
• User selectable protocols for all test methods
• Ipsi or Contralateral stimulation for all reflex test
• Automated peak search functions available for all test methods
• Manual Reflex: manual control of all stimuli
• Reflex Decay: Threshold , Automatic, Manual
Stimulus duration: 10 or 20 sec.
• ARLT: Threshold , Automatic, Manual;
Stimulus duration: 1 sec. fixed
• Non acoustic: 10/20 sec.
FREQUENCIES AND INTENSITY RANGES
Ipsilateral:
• Pure tone level range (dB HL) from 50 to 110
• Noise level range (dB SPL) from 50 to 100
• Frequency: 500, 1000, 2000, 3000, 4000 Hz
• Noise: BBN, HP or LP
Contralateral:
• Pure tone level range (dB HL) from 50 to 120
• Noise level range (dB SPL) from 50 to 115
• Frequency: 250, 500, 1000, 2000, 3000, 4000, 6000, 8000 Hz
• Noise: BBN, HP or LP • Frequency accuracy: ±1%
• Calibration accuracy ±3 dB • Level steps: 1, 2, 5 or 10 dB
• On/Off ratio: 70 dB minimum
Audiometry Specification
RANGE
• Frequency range:
125 – 8000 Hz (with DD45)
125 – 12500 Hz (with HDA280)
250 – 8000 Hz (with B71W)
• 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: 24 dB/oct filtered noise
• Speech noise: 1kHz 12 dB/oct filtered noise
• White noise • External signal • External mike
• Speech material recorded on SD card
• Master Hearing Aid*: 1kHz 6, 12, 18, 24 dB High pass filters
• On/Off rise – fall time: 40 msec
OUTPUT TRANSDUCERS
• ACR, ACL: 10 ohm DD45 matched pair earphone, alternatively
HDA280 Sennheiser. IP30 Insert earphones (optional)
• BC: B71W Radioear; B81 (optional)
• INSERT: Insert transducer
• Free field output: 600 ohm impedance
STIMULUS PRESENTATION MODALITY
• Presentation: Normal, Reverse, Extended (present tone for
1 second from 20 dB below the maximum level)
• Modality: Continuous, Pulsed (rate 0.5, 1 and 2 Hz),
Alternated (ABLB and MLB 0.5, 1 and 2 Hz)
• DLI increment levels:
0.1 dB in steps of 0.1 dB up to 1.0 dB; 1.5, 2, 3, 4, 5 dB
• DLI increment recurrence rates: 0.5 Hz, 1 Hz, 2 Hz
• SISI increment recurrence rates:
0.2 Hz, 0.5 Hz, random. Time on 300 ms
• SISI increment level: 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 5 dB
• Bekesy: mode sweep and fixed; Continuous, Pulsed
and LOT; exam duration 30 sec and 60 sec.
* R35C-PT only