Resonance R25C - PT by Hearing Instruments India Private Limited

TEST TYPES
Tympanometry, Acoustic Reflex, Reflex Decay, Quick Check, Quick Screening, Pure Tone test, Autothreshold, ABLB, Speech Test, Stenger, GAP, DLF
TYMPANOMETRY OPERATING SPECIFICATIONS
PROBE TONE
•226 Hz for tympanometry
INTENSITY
•226 Hz: 85 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
•Sensitivity scale: Auto Scales to appropriate range, available scale at 226 Hz 1.5, 2, 5 and 7 ml AIR PRESSURE
•Control: Automatic
•Range: from +200 up to -400 daPa adjustable in 50 daPa steps
•Pressure accuracy: +/- 10 daPa or +/- 10%
•Sweep rate: 50, 100, 200, 300 daPa/sec and automatic
•Indicator: Measured value is displayed
•Safety limitations: -800 up to +600 daPa

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: Pump manual control of all stimuli
• Reflex Decay: Threshold, Automatic, Manual
•Stimulus duration: 10 or 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
•Accuracy: ±1%
•Harmonic distortion (THD): less than 3% 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 OPERATING SPECIFICATIONS 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 ACCURACY
•Frequency < 0.5%
•Distortion < 1%
•Attenuator linearity 1 dB per 5 dB step, max 3 dB whole range TYPE OF SIGNALS
•Pure tone: sine wave 125 to 8 Khz signal (to 12.5 KHz for HDA280 phones)
•Warble: +/- 5% frequency sine wave modulated, modulation: sine wave 5 Hz
•Narrow band noise: 24 dB/oct filtered noise
•Speech noise: 1 khz 12 dB/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. IP30 Insert earphones (optional)
•BC: B71W Radioear; B81 (optional)
•INSERT: Insert transducer (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)