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Audiometer ZADO-A20 supports air conduction testing ranging from 250 to 8000 Hz with ±2% frequency accuracy and a hearing level range of -10 to 110 dB. The device offers multiple test signals, including pure tone, pulse, and warble tone, with a 5 Hz sine wave modulation for enhanced assessment versatility. It offers customizable diagnostic templates and flexible report formatting, allowing healthcare providers to tailor output according to clinical needs. Our product empowers healthcare professionals to provide accurate, efficient, and patient-focused hearing assessments across a wide range of clinical setups.
| Test Frequency | Air conduction 250 to 8000 Hz allowable error ±2% |
| Hearing Level | Air conduction: 10 to 110 dB |
| Warble Tones Modulation | 5 Hz Sine Wave |
| Display Screen | 2.4inch TFT LCD display |
| Channels | Single channel output |
| Test Signal | Pure tone, Pulse, Warble tone |
| Distortion Factor | Air conduction less than 2.5% |
| Accuracy | Continuous attenuation / Step 5 dB Error:1 dB |
| Output | Adopt single earphone |
| Protect Function | Accord with acoustic safety requirements |
| Storage | Can save 200 test data entries |
| Customize Calculation Accuracy | Original data, keep integer, keep 2 decimal places |
| Diagnostic Template | Customizable hearing diagnostic template (Pure tone) |
| Personalized Reporting Settings | Multiple report templates, combine parameters, support e-signature |
| Report Name | Export file name customizable by name, number, or custom |
| Test Report Storage | FTP supported, multiple formats (JPG/PDF/XML) |
| Data Transfer | USB 2.0, batch test data transfer and print support |
| Connectivity | HL7 protocol, XML/database docking, data access |
Personalized Test Settings
Flexible Calculation Accuracy
Electronic Signature Support
Smart Report Configuration
FTP-Enabled Storage
Multi-Format Data Compatibility
High-Quality Acoustic Output
Fast Setup and Calibration
Compact and Portable Design
Multilingual Interface
Audiometer ZADO-A20 integrates sophisticated digital technology and advanced diagnostic capabilities, offering precise hearing assessments in children, diagnose hearing impairments in adults, with customizable settings for both clinical and field applications.
Frequently Asked Question
Digital Signal Processor: 32-bit ARM Cortex-M4 processor with 48kHz sampling rate Frequency Synthesis: Direct digital synthesis (DDS) with 0.1Hz resolution Intensity Control: 24-bit digital attenuator with 0.5dB steps (±0.5dB accuracy) Waveform Purity: THD <2.5% at 70dB HL Signal-to-noise ratio >70dB (A-weighted)
Manual Békésy Audiometry: Continuous vs. interrupted tones Tone Decay Testing: 60s continuous tone presentation Masking Protocols: Contralateral narrow-band noise Platform method with automatic level calculation
Output Limiting: Hardware-based clipping at 115dB SPL Slow Rise Time: 500ms linear ramp for initial tones Automatic Shutoff: Activates after 3s continuous exposure ≥100dB HL
Connect to 6cc coupler with reference microphone Set to 1kHz/70dB HL Verify: Intensity accuracy (±1dB) Frequency accuracy (±2%) Distortion (<3%)
5 brightness levels 3 contrast settings Auto-rotate display orientation Custom color schemes
Frequency Range: 125 Hz – 12,000 Hz (1/6 octave steps) Intensity Range: -10 dB HL to 120 dB HL (1 dB steps) Accuracy: ±1 dB (ANSI S3.6-2018 compliant)
Insert Earphones: ER-3A compliant (for air conduction) Supra-aural Headphones: TDH-39/49 (with cushion replacements) Bone Vibrator: B71 (mastoid placement) Free Field Speakers: For sound field testing
Automatic Transducer Calibration: Built-in daily biological calibration check Real-Time Monitoring: Detects transducer placement errors Ambient Noise Compensation: Adaptive masking based on environmental noise
Pure-Tone Audiometry (PTA): Air & bone conduction Speech Audiometry: SRT, SDS, MCL testing High-Frequency Audiometry (HFA): Up to 16 kHz (optional) Tympanometry Integration: With compatible middle ear analyzer
Dimensions: 30 × 25 × 10 cm Weight: 3.2 kg (with battery) Battery Life: 8+ hours (fast-charging in 2 hours) IP Rating: IP42 (dust & splash resistant)
Internal Storage: 5,000+ patient records Export Formats: PDF, CSV, HL7 (EMR integration) Connectivity: USB-C, Bluetooth 5.2, Wi-Fi 6
Daily: Biological listening check Monthly: Electroacoustic verification Annual: Full calibration (certified lab required)
Visual Reinforcement Audiometry (VRA) mode Conditioned Play Audiometry (CPA) mode Child-friendly interface with touchscreen
