DFS400 AED/Defibrillator Tester
DFS400 AED/Defibrillator Tester

AED/Defibrillator Tester

Designed for engineers at AED/defibrillator manufacturers, the tester integrates multiple needed testing equipment and functions. With its dedicated software, test data such as the shock waveform, energy (in Joules), parameters, and characteristic points are displayed on one screen and automatically saved to establish a comprehensive test history.
Moreover, it offers switchable loads to evaluate AED shock performance across different scenarios and allows comparison of multiple shock waveforms through the Repeatability and Reproducibility Analysis, ensuring consistent AED/defibrillator quality and reliability.
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To ensure reliable product quality, AED/defibrillator manufacturers perform numerous tests at every stage before the product hits the market. Traditionally, this testing requires multiple pieces of equipment: a defibrillation analyzer, an external load box, a current clamp probe to capture the shock’s current, and a pre-amplifier to amplify the captured current and send the signals to an oscilloscope for waveform display.
This complex testing setup leads to cumbersome operations, requiring operators to carefully observe and record test data while being familiar with each piece of equipment to avoid human error. Additionally, to ensure the accuracy and reliability of test data, regular calibration and maintenance of multiple testing devices incur considerable costs.

Understanding these pain points, we developed the DFS400, which integrates the functions of a defibrillation analyzer, an external load box, and an oscilloscope into a single tester. With its intuitive software interface, users can effortlessly complete setups and tests with just a few clicks. After each test, the software automatically saves the results, creating a traceable test history and eliminating the inconvenience of manual recording.

Considering that engineers need to simulate different physiological conditions by using various impedance values in addition to the standard 50Ω verification for general AED/defibrillator performance, we designed the DFS400 to allow users to switch between its multiple built-in impedance loads through the software. This feature helps engineers determine if the AED/defibrillator can deliver appropriate shock energy under various scenarios.

We've also learned from our customers that verifying the consistency and reliability of each shock requires a substantial number of shock tests, which is time-consuming. Therefore, we equipped the DFS400 with R&R analysis functionality (Repeatability and Reproducibility Analysis) to compare and analyze up to thousands of records of shock waveforms. This ensures that the shock waveforms, energy, and number of shocks meet the manufacturer's quality standards.

To assist engineers in conducting numerous tests efficiently, we provide a free software development kit (SDK), allowing users to develop their own automated testing software. This reduces the effort of repetitive setups for operators and minimizes human error, accelerating the testing process. We envision the DFS400, with its all-in-one functionality, becoming the best aid for AED/defibrillator engineers in testing and verification.





ECG Signal Output

Outputs both shockable and non-shockable ECG signals for testing AED/defibrillator's interpretation capability, including Ventricular Fibrillation (Coarse), Ventricular Fibrillation (Fine), Ventricular Tachycardia, Ventricular Tachycardia (Fast), Atrial Fibrillation, Asystole, and NSR.


Shock Waveform and Energy Measurement

After the DFS400 receives a shock, its software displays the shock waveform, energy (in Joules), parameters, and characteristic points captured at a sampling rate of 4μs, and enables users to move voltage and time cursors to view detailed test data.


Basic Waveform Output

Provides Sine, Square, and Triangle waveforms with adjustable BPM, frequency, and amplitude values to test the basic performance of AED/defibrillator.


Switchable Loads

Built-in impedance values of 25Ω, 50Ω, 75Ω, 100Ω, 125Ω, 150Ω, 175Ω, and 200Ω can be switched via software to simulate different physiological conditions for testing the effectiveness of AED/defibrillator shocks.


Raw Data Playback

Supports playback of ECG databases, and reproduces clinically recorded or user-defined waveforms for repeated verification to facilitate the development process.


Simple Automated Testing

Uses the "Auto Sequence" function to organize and store frequently used test items for automated testing.


Shock Waveform and Energy Analysis

The ''Repeatability and Reproducibility Analysis'' function compares multiple shock waveforms and automatically calculates their energy mean value and standard deviation, enabling quick confirmation of product quality through visualized test data.



 One Single Device Integrates Multiple Functions with Intuitive Software Operations

  • Highly integrates functions of multiple pieces of testing equipment — eliminates the need for setting up multiple devices and reduces the potential noise interference that could originally occur between devices
  • Quickly sets test parameters via dedicated software, including shock energy pass criteria of adult and child modes for each impedance value, providing higher test accuracy

Raw Data Playback — Performance Verification Using Real ECG Signals

  • Supports playback of ECG databases or clinically recorded waveforms to test the AED/defibrillator's interpretation capability
  • Plays user-defined signals to verify specially designed specifications



 Provided SDK for Flexibly Developing Programs as Needed

  • Users can develop automated testing software based on their needs to control the testing process, reducing the effort of repetitive setups for numerous tests


     Automated Shock Test Data Storage and Quality Confirmation through Repeatability and Reproducibility Analysis

    • Automatically saves complete raw data of shock waveforms, creating a test history that can be accessed and traced anytime
    • Repeatability and Reproducibility Analysis — compares the shock waveforms of multiple DUTs or a single DUT to confirm the consistency of quality and reliability, facilitating conducting the endurance test described in IEC 60601-2-4
      Note: The Repeatability and Reproducibility Analysis needs a separate purchase.


    Energy Measurement Specifications

    Maximum EnergyRange: Up to 600J
    Accuracy: ± 1% of reading ± 1J for up to 360J; ± 1% of reading ± 1J, typical for 360J ~ 600J
    VoltageRange: Up to 3000V
    Accuracy: ± (1% of reading + 1V) for 450V ~ 3000V & -450V ~ -3000V; ± (1% of reading + 2V) for -450V ~ 450V
    CurrentRange: 1.2 ~ 100.0A
    Accuracy: ± (1% of reading + 0.1A)
    Load ResistanceResistance: 25, 50, 75, 100, 125, 150, 175, 200Ω
    Energy Accuracy

    For 50Ω:
    ±1% of reading ±0.1J for up to 360J; ±1% of reading ±0.1J, typical for 360J ~ 600J

    For other resistance:
    ±2% of reading ±0.1J for up to 360J; ±2% of reading ±0.1J, typical for 360J ~ 600J

    Note: Maximum energy of monophasic defibrillation may not reach 360J.

    Pulse WidthRange: 1.0 ~ 60.0ms
    Accuracy: ±0.05ms
    Sample Rate250kHz (4μs sample)
    Maximum Average Power24W, equivalent to 1 defibrillation pulse of 360J every 15 seconds


    ECG Signal Specifications

    Ventricular Fibrillation - CoarseVp-p = 3mV
    Ventricular Fibrillation - FineVp-p = 0.5mV
    Ventricular Tachycardia (≒180BPM)Vp-p = 3mV
    Ventricular Tachycardia Plus (≒234BPM)Vp-p = 3mV
    Atrial FibrillationVp-p = 1.2mV
    AsystoleVp-p = 0.03mV
    Normal Sinus Rhythm (NSR)
    (20 ~ 360BPM by 1BPM per step)
    Vp-p 0.5 ~ 5.0mV, step 0.5mV
    User-defined Pattern
    (Max. 5kHz Sample Rate)
    • Load Customized Waveform function: Load a total capacity of up to 1000 seconds of raw data files with variable duration for each file to the DFS400 memory.
    • Play Data function: Directly select and play raw data files stored on the computer with no file size limitations.
    RCA Output Amplitude Range1:875
    RCA Output Amplitude Accuracy<7.5% Vpp, Typical ±5% Vpp


    General Specifications

    TemperatureOperating: 0°C ~ 50°C (32°F ~ 122°F)
    Storage: -20°C ~ +60°C (-4°F ~ +140°F)
    Humidity10% ~ 90% non-condensing
    CommunicationsUSB Type-C connector
    Operation ModesRemote (PC Software via API and SDK)
    PowerDC12V Power Adaptor
    MechanicalHousing: ABS Plastic
    Size (L x W x H): 24.0 x 24.0 x 6.0cm
    Weight: 1.6kg


    Compliance Specifications

    Safety StandardsCE: IEC / EN 61010-1:2010 + A1:2016; Pollution degree 2
    Electromagnetic Compatibility Standards (EMC)CE: EN61326-1
    FCC: EMC P15B


    *Specifications are subject to change without prior notice.

    Ordering information

    DFS400 Test System

    Part No.ImageDescriptionQuantity



    Model No.: DFS400 
    Model Name: AED/Defibrillator Tester 
    Package contents: 
    • DFS400 x 1 
    • DC12V power adaptor x 1 
    • Open-ended AED cable (Banana Male, 0.5 meter, Black) x 1 
    • Open-ended AED cable (Banana Male, 0.5 meter, Red) x 1 
    • Compact splicing connector x 2 
    • USB transfer cable: Type-A to Type-C (Male to Male, 1.8 meter) x 1


    Optional Accessories

    Part No.ImageDescriptionQuantity
    S92-0202021DC12V Power Adaptor1

    Open-ended AED Cable (Banana Male), 0.5 meter (Black)1

    Open-ended AED Cable (Banana Male), 0.5 meter (Red)1

    Compact Splicing Connector1

    USB Transfer Cable: Type-A to Type-C (Male to Male), 1.8 meter1


    Optional Paddle Box Set

    Part No.ImageDescriptionQuantity

    DFS Tester Docking Base for Defibrillator1

    DFS Tester Defibrillation Receiving Plate2
    K22-0100301AED Cable for Paddle Box, Female to Male (Black)1
    K22-0100201AED Cable for Paddle Box, Female to Male (Red)1


    Optional Tool

    Part No.ImageDescriptionQuantity

    Scan Software and Barcode Scanner
    (Argox barcode scanner, model no. AS-9400)


    Optional Software Add-on Pack

    Part No.Description
    HE0-DF00001Repeatability and Reproducibility Analysis for inspecting DUT's quality and performance


    Optional Calibration Service and Warranty Extension

    Part No.Description
    YY0007Model No.: C3
    Provides (3) years of calibration service coverage. WhaleTeq equipment can be calibrated to original performance on the basis of (1) year interval.
    YY0008Model No.: R3
    Extends the limited warranty from (1) year to (3) years.
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