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AiSW 2101 Middle Ear Analyzer (Acoustic Impedance Tester)
Hearing & Audiology Diagnostic Equipment
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AiSW 2101 Middle Ear Analyzer02.jpg
AiSW 2101 Middle Ear Analyzer01.jpg

AiSW 2101 Middle Ear Analyzer (Acoustic Impedance Tester)

Comprehensive middle ear diagnostic capability: Supports tympanometry, ipsilateral/contralateral acoustic reflex threshold and decay tests, enabling full middle ear function assessment.

High-precision measurement performance: Accurate admittance measurement (0.2–5 mL range, ±5% accuracy) with fine resolution up to 0.1 mL for reliable clinical results.

Advanced automatic testing system: Includes probe self-check, automatic calibration, and preset test protocols for adults, children, and infants for efficient workflow.

Wide clinical testing range with safety control: Supports pressure range -600 to +200 daPa with safety limits and multiple stimulus levels for safe and flexible diagnostics.

High compatibility and flexible operation modes: Supports standalone host operation and PC-based software control via USB for data management and analysis.

Standard-compliant professional design: Fully meets GB/T 7341.5-2018 Type 1 and JJF 1771-2019 Type 1 requirements for clinical audiology diagnostics.

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      Class 1SLM
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      IEC61672
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    product details
    AiSW 2101 Middle Ear Analyzer02
    01

    Product Description

    AiSW 2101 The middle ear analyzer transmits certain intensity detection sound to the ear through the loud speaker of the probe, and measures the sound pressure level in the ear canal through the microphone of the probe. Because ear canal pressure or middle ear muscle activity will change the acoustic characteristics of the middle ear system, different sound pressure levels can be measured at the probe under different ear canal pressure or middle ear muscle activity. By monitoring the change of sound pressure level in the measuring system, acoustic compliance properties of the tympanic membrane and the auditory ossicle chain for acoustic energy conduction as measured from changes in the equivalent volume of sound .
    The middle ear analyzer shall comply with the technical requirements of Type I ear acoustic impedance/admittance measuring instrument in GB/T 7341.5-2018 Electroacoustical audiometry equipment-Part 5: Measuring instrument for ear acoustic impedance/admittance, JJG 991-2017 Verification code for ear acoustic impedance/admittance measuring instrument and JJF 1771-2019 Type evaluation outline for impedance audiometer (ear acoustic impedance/admittance measuring instrument). 
    The product is composed of host, power adapter, cable probe, air guide headset and upper computer software. 

    Product Video

    Features

    Test type: Tympanometry test, manual test of reflection threshold on the ipsilateral /contralateral side, reflection attenuation test on the ipsilateral /contralateral side, manual tympanometry test;
    Probe inspection: Automatic inspection of admittance test, air pressure test and sensor test on the same side;
    Admittance calibration: Carry out admittance calibration through the cavity with 0.5 mL, 2 mL and 5 mL;
    Procedure setting: Preset three procedures for adults, children and infants, and other procedures can be customized;
    Tympanogram: It can be automatically scaled according to the test results;
    Combined test: User-defined test items, automatically tested in sequence after pressing Start;
    Key controller: Switch between left and right ears and start/pause test through key on shoulder strap;
    Result printing: The host has a built-in printer, which can print test results directly; Test results can also be printed by other printers connected to the host computer;
    Operation: It can be operated by the upper computer and the host independently;

    Main Performance Indicators

    No.

    Item

    Parameter

    1

    Detection sound

    226 Hz (85 dB SPL ±5 dB); 1000 Hz (70 dB SPL ±5 dB)

    Total harmonic distortion

    <1%

    Frequency accuracy

    <0.5%

    2

    Measurement range

    Plane tympanograph: 0.2 mL~5 mL ±5% / 0.1 mL; External ear tympanum compensation diagram: 0 mL~2 mL ±5% / 0.1 mL; Deviation between dynamic and static operation methods is less than ±0.1 mL

    3

    Acoustic reflex frequency

    500 Hz, 1000 Hz, 2000 Hz, 4000 Hz; Frequency accuracy: <0.5%

     

    Total harmonic distortion

    Plug-in headset: below 100 dB HL: <5%; Ear-pressing headset: below 110 dB HL: <2.5%, above 110 dB HL: <5%

    4

    Acoustic reflex sensitivity

    0.01 mL, 0.02 mL, 0.03 mL, 0.04 mL, 0.05 mL

     

    Reflex screening

    0.02 mL

    5

    Step

    1 dB / 2 dB / 5 dB

    6

    Stimulation sound level

    Plug-in headset: 50~100 dB (±5 dB); Ear-pressing headset: 50~120 dB (±3 dB)

    7

    Wideband noise

    spectrum

    Inhomogeneity of spectral sound pressure level relative to 1000 Hz within 500 Hz~4000 Hz: better than ±5 dB

    8

    On-off ratio and signal-to-noise ratio

    >70 dB SPL

    9

    Pressure range

    -600 daPa~200 daPa

    10

    Pressure accuracy

    ±10 daPa or ±10%, whichever is greater

    11

    Pressure change rate

    50/100/200/400/600 daPa/s ±20%

    12

    Pressure safety limits

    +600 daPa and -800 daPa

    13

    Display screen

    Size: 10 inches; Resolution: 1024 × 600

    14

    Input power

    30 VA

    15

    Conforming standard

    GB/T 7341.5-2018 Type 1; JJF 1771-2019 Type 1

    16

    Test type

    Tympanometry test, manual test of reflex threshold on ipsilateral/contralateral side, reflex decay test on ipsilateral/contralateral side, manual tympanometry test

    17

    Probe inspection

    Automatic conductivity test, air pressure test and same-side sensor test

    18

    Admittance calibration

    Carried out through cavities of 0.5 mL, 2 mL and 5 mL

    19

    Procedure setting

    Preset three procedures for adults, children and infants; other procedures can be customized

    20

    Tympanometry

    Can be automatically scaled according to test results

    21

    Combined test

    User-defined test items, automatically tested in sequence after pressing Start

    22

    Key controller

    Switch between left and right ears and start/pause test via key on shoulder strap

    23

    Result printing

    Host has built-in printer for direct printing of test results; results can also be printed via other printers connected to the host computer

    24

    Operation

    Can be operated via the upper computer (PC) or the host

    25

    Storage

    According to PC capacity, unlimited storage quantity

    26

    Preheating time

    Less than 5 minutes

    27

    Connection with PC

    Via USB port

    28

    Power supply

    A.C. 220 V, 50 Hz

    29

    Working environment

    Ambient temperature: 15℃~35℃; relative humidity: 30%~90%; atmospheric pressure: 98 kPa~104 kPa

    30

    Product validity period

    5 years

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