Electrical safety tester WECG400

signalfor medical devicesfor medical applications

Overview
The first parallel testing ECG tester specifically designed for wearable devices can simultaneously test ECG function on up to 4 devices with a single computer to accelerate testing time. It provides compliance tests conforming with IEC 60601-2-47, YY0885, and YY 9706.247-2021, and can output 7 types of standard ECG waveforms to assist wearable devices in meeting regulatory requirements of accuracy.
To mitigate environmental noise interference and ensure accurate test signals, the product incorporates multiple anti-interference designs and digital signal processing to reduce noise impact and provide reliable test results.
The device is designed to be integrated into existing testing processes and includes a software development kit (SDK) that allows engineers to develop automated test software and to control multiple WECG400 units to test more than 4 devices simultaneously.

Functions

• Simultaneously tests 4 wearable devices via 4 sets of RA/LA/RLD electrode ports.
• Outputs 7 waveform types: ECG, Sine, Triangle, Square, Exponential, Rectangle Pulse, Triangle Pulse. Adjustable parameters include BPM, frequency, amplitude, and optional DC offset.
• Provides compliance testing items referenced to IEC 60601-2-47, YY0885, and YY 9706.247-2021, including dynamic range, input impedance, and frequency response, with switchable settings via software.
• Plays raw data: supports playback of ECG databases, clinical recordings, and user-defined waveforms to verify DUT consistency and stability.

Highlights

• Anti-interference design with multiple shielding and ESD protection to minimize environmental noise interference.
• Digital signal processing to separate and filter noise, delivering precise test signals.
• Customizable input impedance testing: standard 620kΩ / 4.7nF and optional 10MΩ / 180pF to match device-under-test specifications.
• Raw data playback capability for performance verification using real ECG signals and user-defined records.
• SDK provided for flexible integration into automated production testing and for controlling multiple units.

Standard ECG waveforms (parameters)
Parameters | Range | Resolutions
ECG Waveform - Frequency (Hz): 0.02—6 Hz | Resolution: 0.01
ECG Waveform - Frequency (BPM): 1—360 BPM | Resolution: 1
ECG Waveform - Amplitude: (-5)—5 mV | Resolution: 0.01
Sine - Frequency (Hz): 0.05—500 Hz | Resolution: 0.01
Sine - Frequency (BPM): 3—30000 BPM | Resolution: 1
Sine - Amplitude: (-10)—10 mV | Resolution: 0.01
Triangle - Frequency (Hz): 0.05—500 Hz | Resolution: 0.01
Triangle - Frequency (BPM): 3—30000 BPM | Resolution: 1
Triangle - Amplitude: (-10)—10 mV | Resolution: 0.01
Square - Frequency (Hz): 0.05—500 Hz | Resolution: 0.01
Square - Frequency (BPM): 3—30000 BPM | Resolution: 1
Square - Amplitude: (-10)—10 mV | Resolution: 0.01
Exponential - Frequency (Hz): 0.05—5 Hz | Resolution: 0.01
Exponential - Frequency (BPM): 3—300 BPM | Resolution: 1
Exponential - Amplitude: (-5)—5 mV | Resolution: 0.01
Rectangle Pulse - Frequency (Hz): 0.05—5 Hz | Resolution: 0.01
Rectangle Pulse - Frequency (BPM): 3—300 BPM | Resolution: 1
Rectangle Pulse - Amplitude: (-5)—5 mV | Resolution: 0.01
Rectangle Pulse - Pulse width (f=0.05 Hz): 1—300 ms | Resolution: 1 ms
Rectangle Pulse - Pulse width (f=5 Hz): 1—200 ms | Resolution: 1 ms
Triangle Pulse - Frequency (Hz): 0.05—5 Hz | Resolution: 0.01
Triangle Pulse - Frequency (BPM): 3—300 BPM | Resolution: 1
Triangle Pulse - Amplitude: (-5)—5 mV | Resolution: 0.01
Triangle Pulse - Pulse width (f=0.05 Hz): 1—300 ms | Resolution: 1 ms
Triangle Pulse - Pulse width (f=5 Hz): 1—200 ms | Resolution: 1 ms

Input Impedance / Frequency Response and Signal Add-on
Play raw data - Sample rate: Maximum 40 kHz
DC offset (non-variable): -300, 0, +300 mV | Default: 0 mV | Step: 300 mV
DC offset (variable): (-1000)—1000 mV | Default: 0 mV | Step: 100 mV
Input impedance switch options: 100 Ω (short circuit) | 620 kΩ / 4.7 nF on/off | 10 MΩ / 180 pF on/off (on: short circuit)

Product system capacity and standard requirements (selected)
Main output voltage accuracy: ±1% for amplitudes of 0.5 mVpp or higher | System capability: ±0.3%
Main output voltage resolution (DAC resolution): N/A | System: 0.15 µV
Frequency / pulse repetition rate accuracy: ±1% | System capability: ±0.1%
Pulse duration / timing accuracy: ±1 ms | System capability: ±0.2 ms
Resistor tolerance: ±1% | System capability: ±0.5%
Capacitor tolerance: ±5%
Sample rate: 5 kHz ±0.1% | System capability: 10 kHz ±0.05% (50 ppm)
DC offset (fixed, noise-free, internal supercapacitor): 300 mV ±1% | System capability: 300 mV ±0.1%
DC offset (variable, up to 1000 mV): Setting ±1% or ±3 mV
Operating environment (design): 15—30 °C, 30—80% RH

Standard package (contents)

• WECG400 x 1
• Grounding wire (alligator clip to ring terminal) x 1
• RCA to BNC cable x 2
• USB Type-A to Type-B cable x 1
• Compound terminal x 12
• Power adaptor x 1

Optional accessories (examples)

• DC12V power adaptor (Part No. S92-0204021)
• RCA to BNC cable 73.8 cm (Part No. K21-0738301)
• USB Type-A to Type-B cable (1.8 m) (Part No. K27-1800301)
• Signal grounding wire (alligator clip to banana male) (1 m) (Part No. K22-1000701)
• Grounding wire (alligator clip to ring terminal) (1 m) (Part No. K29-1000801)
• Compound terminal (Part No. N54-0120013)

Documentation and software
Datasheet and user manual are available for the product. Software package (performance test application) and SDK are provided to support performance verification and integration into production testing.

Caractéristiques / spécifications techniques

• Model: WECG400
• Manufacturer / Brand: WhaleTeq
• Primary function: Parallel ECG tester for wearable device production line (simultaneous testing of up to 4 devices)
• Electrode ports: 4 sets (RA/LA/RLD) for parallel testing
• Output waveforms: ECG, Sine, Triangle, Square, Exponential, Rectangle Pulse, Triangle Pulse (7 types)
• Waveform amplitude ranges: up to ±10 mV depending on waveform; ECG up to ±5 mV
• Waveform frequency ranges: ECG 0.02—6 Hz; other waveforms up to 500 Hz (varies by waveform)
• Sample rate: default 5 kHz (system capability up to 10 kHz or higher for some operations)
• DC offset: fixed 300 mV (noise-free) and variable up to ±1000 mV
• Input impedance options: 100 Ω (short), 620 kΩ/4.7 nF on/off, 10 MΩ/180 pF on/off
• Compliance-related tests included: dynamic range, input impedance, frequency response per IEC 60601-2-47, YY0885, YY 9706.247-2021
• Accuracy examples: main output voltage accuracy ±1% (for amplitudes ≥0.5 mVpp); main output resolution (DAC) 0.15 µV
• Anti-interference: multiple shielding layers, ESD protection, and DSP filtering
• Integration: SDK available for automated testing and multi-unit control
• Standard package contents: listed above