AA222 Audio Traveller
Contents
1. Attenuator Range Test Types Manual Audiometry Automatic Audiometry Manual Reflex Reflex Decay SISI Warble Stenger ABLB Memory 0 to 130 dB in 1 or 5 dB steps Typical range is 10 to 120 dB HL Range is individual for different modes see table 1 Manual control of all functions Auto threshold according to ISO 8253 1 Patient controlled Hughson Westlake Threshold is determined by the activation of the patient response Manual control of all functions Manually controlled with stimulus duration of 10 seconds With automatic scoring calculation 5 dB included for familiarisation 5 Hz sine 5 modulation Binaural pure tone or speech stimulation Automatic loudness balance test Fowler 6 ipsilateral and 6 contralateral graphs curves which each can hold up to 6 pulses There is an additional capacity for 6 manual tests Properties of stimuli General Specifications for stimulus and audiometer signals are made to follow IEC 60645 1 Contralateral Earphone Pure tone Wide Band noise WB spectral properties Low pass noise LP spectral properties Hign pass noise HP Ipsilateral Earphone Pure tone Wide Band noise WB spectral properties Low pass noise LP spectral properties Hign pass noise HP General about levels Electrical output properties Initial Latency Rise Time Terminal latency Fall time Overshoot Undershoot ISO 389 12. for audiometric headphone Interacoustics standard As Broad band noise specified in IEC 60645 5 but with 500 Hz as lower cut off frequency Interacoustics standard Uniform from 500 Hz to 1600 Hz 5 dB re 1000 Hz level Uniform from 1600 Hz to 10 kHz 5 dB re 1000 Hz level Interacoustics standard Interacoustics standard As Broad band noise specified in IEC 60645 5 but with 500 Hz as lower cut off frequency Interacoustics standard Uniform from 500 Hz to 1600 Hz 10 dB re 1000 Hz level Uniform from 1600 Hz to 10 kHz 10 dB re 1000 Hz level The actual sound pressure level at the eardrum will depend on the volume of the ear See table 2 44 2 5 0 m 44 2 5 0 m 44 2 5 0 m 44 2 5 0 5 2 5 2 SES Twa wa ne CANI ww Interacoustics AA222 Technical Specifications Page 7 Table 1 Frequencies and intensity ranges Frequency Contralateral Ipsilateral headphone Max Hz DB HL 250 10 110 10 105 o 10 500 10 120 10 110 o 10 10 105 1000 10 120 10 120 o no 10 110 2000 10 120 10 120 o 105 10 105 3000 10 120 10 120 o too 10 100 4000 10 120 10 115 o 95 10 100 pof o 6000 10 120 10 8000 10 110 10 WBnoise 10 120 10 120 o 100 10 105 LP noise 10 120 10 120 o 100 10 105 HP noise 10 120 10 120 o too 10 105 Minimum l
3. Narrow Band IEC60645 1 White Noise Connection for CD player or tape recorder Connection for external microphone for live speech Connection for talk back microphone Patient response switch connection Audiometric headphone left and right B71 bone conductor Electrical output for external 2 channel power amplifier AP12 and AP70 Monitor earphone disconnects the internal monitor loudspeaker when inserted Operator can monitor signal when presented to the patient as well as the talk back signal from the patient s microphone Audiometric headphones for reflex and audiometry measurements Probe earphone incorporated in probe system for reflex measurements 0 001 ml is the lowest detectable volume change The risk of artefacts at higher stimulus levels in reflex measurements are minor and will not activate the reflex detection system Connection for air system to probe Input output for PC connection An external PC can be setup to both monitor and control the instrument The control actions can be followed on the display and the operation panel Online communication can be selected where the measured data will be sent to an external PC Connection for external keyboard standard PC type frequency accuracy better than 296 frequency accuracy better than 396 frequency accuracy better than 396 THD is less than 396 THD is less than 596 THD is less than 2 596 CANI ww Interacoustics AA222 Technical Specifications
4. Probe tone Mic signal LED blue Press 2 signal LED green Ipsi Stim Gnd Ipsi Stim Signal Probe tone Gnd Gnd Vref 5V LED red USB USB type B USB port for See appendix A in service manual communication for detailed information CANI ww Interacoustics AA222 Technical Specifications Page 11 Table 6 General properties for earphones Sound attenuation values for earphones Attenuation TDH DD45 with MX41 EAR Tone 3A AR or PN 51 cushion EAR Tone 5A CANI UY Interacoustics o o o c A gt D c o E he c 0 9 o c o gt y o he gt A Led E 9 k gt lt N o 2 E Free Field Insert Masking gt z o E 2 3 3 lt c 2 25 33 mec o o N ta MI OI x x 10 jo jo O o o o wu o BG see PE gt 7 7l 7 e lt ez2aJ o o o o o o o o ojojo noae Ara rna na aa ena IT x MI SO SO CO Of COL OlO o o o GT A A JA aja A LI i lo lt Mm J CO CO OJ Of Of Of OJ Oo ojojo or i la N o LO EAR Tone TDH DD4 Frequency Note Max values are obtainable by selecting Ext Range on the instrument CAS UY Interacoustics
5. Technical Specifications AA222 Audio Traveller Fan M atmo ol M Ls SY I inte racoustics Item No 8107028 1 07 2014 AA222 Technical Specifications Page 2 Parts Included Parts Audiometric headphone Single contralateral headset CIR33 Insert earphones B71 Bone conductor APS2 Patient Signal ATP AT235U Universal probe system with shoulder strap and wrist strap tubing 360mm 1 3x 3 3 transparent silicone TPR26 3 rolls of recording paper Power cable Dust cover Operation Manual Multilingual CE instructions for use Additional Parts EARtone 5A Audiometric Insert Phones 50250 Peltor noise exclosures 21925 Amplivox noise exclosures ACC400 carrying case CAT50 calibration unit 0 2 0 5 2 0 5 0 ml IES impedance ear simulator GSE10 RS232 Galbanic isolation adapter USB cable 2m black an NY Interacoustics AA222 Technical Specifications Page 3 Standards Safety IEC60601 1 Class 1 Type B EMC IEC60601 1 2 Impedance IEC60645 5 ANSI S3 39 Type 2 Audiometer IEC60645 1 ANSI S3 6 Tone Type 2 Speech Type B E Power Consumption 15VA Mains voltage fuses 100 240V 50 60Hz 0 5A max The AA222 is delivered with a power cord for the relevant national mains socket But AA222 can be powered by any national AC voltage Before use the correct attachment plug mains cable must be identified and installed Operation Environment Temperature 15 35 C 65 95 F Rel Humidity 30 90 T
6. emperatures below 0 C 32 F and above 50 C 122 F may cause permanent damage to the instrument and accessories Warm up time 10min at room temperature 20 C 68 F Printer Optional Type Thermal printer with recording paper in rolls Printing Time Depending on the test printed Paper Rolls Width 112 0 5 mm Diameter 45 42 0 mm Basis weight 58 5 3g m2 Thickness 62 3 u Tensile Min 3 2 kN m CANI ww Interacoustics AA222 Technical Specifications Impedance Measuring System Probe tone Frequency Level Air Pressure Control Indicator Range Pressure Limitations Pressure Change Rate Compliance Range Types Tympanometry Eustachian Tube Function Indicators Graphical display Memory Tympanometry Eustachian Tube Function Impedance calibration properties Probe tone Frequencies Level Distortion Calibrated transducers Audiometry headset Bone conductor Definition of units 1 ml at 226 Hz 1 acoustic mmho 1 acoustics mho 10 m Pa s 1 daPa 10 Pascal 226 Hz 85 dB SPL with AGC assuring constant level at different volumes Automatic Measured value is displayed on the graphical display 600 to 300 daPa 800 daPa and 600 daPa Minimum 50 daPa s medium maximum or automatic with minimum speed at compliance peak Selectable in the setup 0 1 to 6 0 ml Ear volume 0 1 to 8 0 ml No difference is measured in the recorded val
7. evel step size 5 dB Maximum difference error between tow steps is less than 3 dB Residual noise is less than 25 dB A Signal to noise ratio is larger than 80 dB A ON OFF ration is larger than 80 dB A Rise fall time 35 ms 10 ms Table 2 Variation of ipsi stimulus levels for different volumes of the ear canal Variation of ipsi stimulus levels for different volumes of the ear canal Relative to the calibration performed on an IEC 126 coupler UY Interacoustics AA222 Technical Specifications Table 3 General properties for earphones Sound attenuation values for earphones EAR Tone 3A Audiometric headphone with MX41 AR or PN 51 cushion CANI Difference between free field and coupler sensitivity levels Used by Free Field equivalent earphone output Type A E or B E Audiometric headphone with MX41 AR or PN 51 cushion using IEC 303 coupler ww Interacoustics AA222 Technical Ai Page 9 Reference values for stimulus and audiometer calibration panies field TDH DD Insert Ipsi A a cla Slo fl a y eee al 8 9 15 5 p ISO 389 3 ANSI S3 6 Valid for placement on the human mastoid Olalla yla ajo a C1 Ot Oo Co 00 osle y o Co Coupler types used by calibration TDH DD45 is calibrated using a 6cc acoustic coupler made in accordance to IEC 60318 3 Insert phones are calibrated
8. ues between static and dynamic measuring mode Automatic where the start and stop pressure can be user programmed from the setup menu Williams test automatic function Compliance is indicated as ml and pressure as daPa Stimulus level is indicated as dB Hearing Level 1 curve per ear 3 curves per ear 226 Hz 196 678 Hz 1 800 1 85 dB SPL 1 5 dB measured in an IEC 60318 5 acoustic coupler The level is constant for all volumes in the measurement range Max 396 THD Telephonics TDH DD45 with a static force of 4 5N 0 5N Radioear B71 with a static force of 5 4N 0 5N CANI ww Interacoustics AA222 Technical Specifications Reflex and Audiometer Functions Signal Sources Tone Contra Reflex Tone Contra Audiometry Tone Ipsi Reflex Noise Contra Reflex Noise Ipsi Reflex Noise Audiometry Inputs CD1 2 Mic Talk Back Patient Response Output Audiometry Earphones Bone Conduction Free Field 1 and 2 Monitor Contra Earphone Ipsi Earphone Reflex sensitivity Reflex detection Air USB Keyboard Tolerance THD Probe tone Insert earphones Super aural earphone Probe tone Insert earphones Super aural earphone 250 500 1000 2000 3000 4000 6000 and 8000Hz 125 250 500 750 1000 1500 2000 3000 4000 6000 and 8000Hz 500 1000 2000 3000 and 4000Hz Wide Band High Pass Low Pass Wide Band High Pass Low Pass
9. using a 2cc acoustic coupler made in accordance to IEC 60318 5 Bone Conductor is calibrated using a mechanical coupler made in accordance to IEC 60318 6 PC Y add Interacoustics AA222 Technical Specifications Page 10 Tabe 5 Specification of input output connections Connector Electrical properties type Mains connector IEC 60320 1 2 5A 250V AC Type C6 atient response Jack 6 3mm Handheld switch Signal is forced to 5V level when stereo activated Pati CD 1 and 2 Jack 3 5mm Sensitivity 9 mV at max volume and 0 Vu Impedance 47 5 KQ Freq Response 75 12000 Hz 3dB Microphone Jack 3 5 mm Type Electret or 20000 dynamic Sensitivity microphone Impedance 100 uV at max volume for 0 Vu Freq Response reading Electret bias 47 5 KQ 90 20kHz 6 2V through 4 75 kO 1 3 mA Talk Back Jack 6 3 mm As for Microphone microphone stereo Outputs J o 0 O Phones Left Jack 6 3mm Voltage Up to 5 5V rms by 100 load Right mono Min load impedance 50 Bone conductor Jack 6 3mm As for Phones mono Left Right Free Field 1 2 Phono Voltage Up to 8 0V rms by 1000 load Min load impedance 1000 Freq response 75 12000 Hz 3dB Output impedance 500 ohm Monitor Jack 6 3mm Voltage Up to 2 0V rms by 80 load mono Min load impedance 0Q Phones Up to 5 5V rms by 100 load Contralateral 50 Insert masking Transducer CANON 15 in 1 Press 1 signal pole in 2 12V 12V Remote key detection
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