Description
| SPECIFICATION | ||
|---|---|---|
| Model | AA222 | |
| Manufacturer | Interacoustics | |
| Country of Origin | Denmark | |
| Included Parts |
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| Optional Part |
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| Available Tests | Basic License | Extended License |
| Basic Audiometry | X | X |
| ABLB – Fowler | X | X |
| SISI | X | X |
| Speech | X | X |
| Stenger | X | X |
| Auto Hughson Westlake | X | X |
| Speech Ch2On | X | |
| Speech in Noise | X | X |
| Weber | X | X |
| Quick SIN | Optional | Optional |
| Tymp 226Hz | X | X |
| Ipsi Lateral Reflex | X | X |
| Contra Lateral Reflex | X | X |
| ETF 1 test non-perforated tympanic membrane | X | X |
| ETF 2 test perforated tympanic membrane | X | X |
| Reflex decay | X | X |
| Tymp 678, 800 & 1000Hz | X | |
| Manual tympanometry | X | |
| ETF 3 patulous tympanic membrane | X | |
| Reflex latency | X | |
| TECHNICAL SPECIFICATION | ||
|---|---|---|
| Power Supply | 240V / 1.5A | |
| Weight | 3.1kg / 6.8lb | |
| Dimensions (L×W×H) | 9×33×44 cm / 3.5×13×17.3 inch | |
| Compatible Software | Diagnostic Suit – Noah OtoAccess | |
| Warm Up Time | Approximately 1 minute | |
| Patient Response Switch | Two push Button | |
| Operation Environment | Temperature: 15 – 35 °∁ Relative Humidity: 30 – 90 % Ambient Pressure: 98 – 108 kPa |
|
| Monitor | Output through built-in speaker or through external earphone or speaker | |
| Audiometry Measure System | ||
| Stimuli | Tone | 125-8000Hz. Resolution 1/2-1/24 octave. |
| Warble Tone | 1-10 Hz sine +/- 5% modulation | |
| Pediatric Noise | A special narrowband noise stimulus. The bandwidth is frequency depended 125-250 Hz 29%, 500Hz 24%, 750 Hz 20%, 1kHz 17%, 1.5kHz 13%, 2kHz 11%, 3kHz 9% from 4kHz and up is fix 8%, | |
| Wave file | 44100Hz sampling, 16 bits, 2 channels | |
| Masking | Automatic selection of narrow band noise (or white noise) for tone presentation and speech noise for speech presentation. | |
| Presentation | Manual or Reverse. Single or multiple pulses. | |
| Frequency Range | 125Hz to 8kHz (Optional High Frequency: 8 kHz to 20 kHz) 125Hz, 250Hz, 750Hz, 1500Hz and 8kHz may freely be deselected | |
| External Signal | Speech replaying equipment connected to the CD inputs must have a signal-to-noise ratio of 45 dB or higher. The speech material used must include a calibration signal suitable for adjusting the input to 0 dBVU. | |
| Free Field output (non-powered) | Power Amplifier and Loud Speaker (With an input of 7 Vrms – Amplifier and loudspeakers must be able to create a Sound Pressure Level of 100 dB in a distance of 1 meter) | |
| Internal Storage | 500 patients and unlimited sessions/measurements/audiograms | |
| External Devices (USB) | Standard PC mouse and Keyboard (for data entry) Supported printers (Please contact distributor for a list of approved printers) | |
| Patient Communication | Talk forward and talk back | |
| Impedance Measuring System | ||
| Probe tone | Frequency level | 226 Hz, 678 Hz, 800 Hz, 1000 Hz; pure tones; ±1% 85 dB SPL (≈ 69 dB HL) ±1.5 dB |
| Air pressure | Control: Indicator: Range: Pressure limitation: Pump speed: | Automatic. Measured value is displayed on the graphical display. -600 to +400 daPa. ±5% -750 daPa and +550 daPa. Automatic, Fast 300 daPa/s, Medium 200 daPa/s, Slow 100 daPa/s, Very slow 50 daPa/s. |
| Compliance | Range | 0.1 to 8.0 ml at 226 Hz probe tone (Ear volume: 0.1 to 8.0 ml) and 0.1 to 15 mmho at 678, 800 and 1000 Hz probe tone. All ±5% |
| Test Types | Tympanometry | Automatic, where the start and stop pressure can be user programmed in the setup function. Manual control of all functions |
| Eustachian tube function 1 – Non perforated eardrum | Williams test | |
| Eustachian tube function 2 – Perforated eardrum | Toynbee test | |
| Eustachian tube function 3 – Patulous Eustachian tube | Continuous sensitive impedance measurement | |
| Reflex Function | ||
| Signal Sources | Tone – Contra, Reflex: THD: | 250, 500, 1000, 2000, 3000, 4000, 6000, 8000 Hz, Wide Band, High and Low pass. Less than 5 until 110 dB, 5 % above 110 dB (supra-aural headphones), less than 5 % until 110 dB, 10 % above 110 dB (insert earphones or probe). |
| Tone – Ipsi, Reflex | 500, 1000, 2000, 3000, 4000 Hz wide band, high and low pass. | |
| NB noise – Contra, Reflex | 250, 500, 1000, 2000, 3000, 4000, 6000, 8000 Hz | |
| NB noise – Ipsi, Reflex | 1000, 2000, 3000, 4000 Hz | |
| Stimulus duration | 750 ms | |
| Reflex Acceptance | Adjustable between 2 % and 6 %, or 0.05 – 0.15 ml change of ear canal volume | |
| Intervals | Down to 1 dB step size | |
| Intensity max | 90, 100, 120 dB HL | |
| Outputs | Contra Earphone | TDH39 earphone, DD45 earphone, CIR insert and/or EARtone 3A insert, IP30 for Reflex measurements |
| Ipsi Earphone | Probe earphone incorporated in the probe system for Reflex measurements | |
| Probe connection | Connection of the electrical and air system to the probe | |
| Test types | Manual Reflex | Manual control of all functions |
| Automated Reflex | Single intensities Reflex growth | |
| Reflex Decay | Automatic, 10 dB above threshold and manually controlled with stimulus durations of 10 s. | |
| Reflex Latency | Automated, first 300 ms from stimulus start | |
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