Origins
EEG helps us gain a deeper understanding of human brain activity, including diagnosing, monitoring and studying a variety of non-brain structural lesions, and assessing the patient's state of consciousness. It is also useful for exploring the brain's operations in learning, memory and attention. Many start-up companies are also continuing to study and improve, making the detection of EEG signals more accurate.
However, in the past experience of communicating with customers, we learned that there is no simulator specifically designed for EEG on the market. Most customers will choose the more mature ECG simulator as a substitute for performing tests, but the fact is that these two kinds of signals vary greatly, so as design considerations.
Since the intensity of brain waves is only a few hundred microvolts and must be magnified approximately 10,000 times to be recognized, they are often susceptible to external interference or distortion due to noise. Therefore, SEEG 100E can output a 1µV tiny signal through sophisticated circuit design. It has a built-in EEG standard test circuit with 620kΩ / 4.7nF output impedance test to ensure that the simulation of brain waves is real enough. 9-channel automatic switching switches are also provided for individual channels, which also strengthens the functionality of SEEG 100E.
In addition, SEEG 100E can also be used as an EEG database player, providing frequency response adjustment function, and can play waveform files in PhysioNet EDF, TXT, and Binary formats, which is helpful for clinical waveform verification.
At the same time, we also provide a free Software Development Kit ( SDK ) , which allows users to develop automated testing software , flexibly expand testing capabilities, and reduce human errors that may result from repeated settings and operations. We can use SEEG 100E to ensure the accuracy and consistency of the EEGs, comply with international standards and product specification requirements.
Functions
Delicate Circuit Design
Designed in accordance with the latest EEG standard IEC 80601-2-26:2019, it has a built-in 620kΩ / 4.7nF output impedance test circuit and can output a 1µV tiny signal.
.png)
Individual Channel Performance Testing
Automatically switches from 9 channels to perform testing individually.
Raw Data Playback
Supports playback of EEG databases, and reproduces clinically recorded or user-defined waveforms to rapidly verify signal processing systems and algorithms.
Raw Data Playback with High Repeatability and Reproducibility
- Reproduce clinically recorded or self-compiled waveforms, including playback of custom waveform files in PhysioNet EDF, TXT , Binary and other formats
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
| Parameters | Specifications |
|---|---|
| Main output voltage accuracy | ±1% for amplitudes of 50µVpp or higher |
| Main output voltage resolution (DAC resolution) | 0.5µV |
| Frequency / pulse repetition rate accuracy | ±1% |
| Pulse duration / timing accuracy | ±1ms |
| Resistor tolerance | ±1% |
| Capacitor tolerance | ±5% |
| Precision 500:1 divider (50kΩ:100Ω) | ±0.2% |
| Sample rate | 5kHz ± 0.1% |
| DC offset (fixed, noise free, from internal supercapacitor) | 150mV ± 1% |
| DC offset (variable, may include up to 50µVpp noise) | Setting ±1% or ±3mV |
| Power supply | USB +5Vdc supply (no separate power supply required) 0.5A (high power mode) |
| Environment | 15–30°C (by design, not tested) 30–80% RH (by design, not tested) |
| Safety, EMC standards | No applicable safety standards (maximum internal voltages 12Vdc) For EMC no testing performed. CE marking based on careful selection of parts, including USB protection IC, as well as special filters to reduce noise from microprocessor (8MHz) and DC/DC converter (200kHz). |
Signal Type
| Parameters | Setting Range | Default Values | Minimum Step Size | |
|---|---|---|---|---|
| Sine | Frequency (Hz) | 0.05–500Hz | 10Hz | 0.01 |
| Amplitude | (-2000)–2000µV | 100µV | 1 | |
| Triangle | Frequency (Hz) | 0.05–500Hz | 10Hz | 0.01 |
| Amplitude | (-2000)–2000µV | 100µV | 1 | |
| Square | Frequency (Hz) | 0.05–500Hz | 10Hz | 0.01 |
| Amplitude | (-2000)–2000µV | 100µV | 1 | |
| Rectangle pulse | Frequency (Hz) | 0.05–5Hz | 5Hz | 0.01 |
| Amplitude | (-2000)–2000µV | 100µV | 1 | |
| Pulse width | 2–300ms | 100ms | 1 | |
| Triangle pulse | Frequency (Hz) | 0.05–5Hz | 5Hz | 0.01 |
| Amplitude | (-2000)–2000µV | 100µV | 1 | |
| Pulse width | 2–300ms | 100ms | 1 | |
| Hysteresis | Frequency (Hz) | 0.05–500Hz | 5Hz | 0.01 |
| Amplitude | (-2000)–2000µV | 100µV | 1 | |
| Pulse width | 2–300ms | 100ms | 1 | |
Signal Add-on
| Parameters | Setting Range | Default Values | Minimum Step Size | |
|---|---|---|---|---|
| DC offset | (-1000)–1000mV | 0mV | 1 | |
| 620kΩ / 4.7nF (Turn on for short circuit) | on / off | Off | - | |
| Noise | Main noise | 50Hz, 60Hz, 80Hz, 100Hz (The 80Hz and 100Hz settings are for capacitance correction only, not for testing EEG.) | 50Hz | - |
| Frequency scan (Sine) | Start frequency | 0.67–500Hz | 0.67Hz | 0.01 |
| Stop frequency | 0.67–500Hz | 150Hz | 0.01 | |
| Duration | 10–180s | 30s | 0.01 | |
| Output lead electrode | Ch1–Ch9 (Ch10–Ch22 are shorted together.) | Ch1 | - | |
SEEG 100E Test System
| Part No. | Description | Quantity |
|---|---|---|
| 100-EE00102 | Model No.: SEEG 100E Single Channel EEG Test System with one EEG Breakout Box and Assistant Software for IEC 80601-2-26:2019 performance tests. Package contents: • SEEG 100E x 1 • EEG breakout box x 1 • Wire tie x 22 • USB cable x 1 • Grounding wire x 1 | 1 |
Optional Accessories
| Part No. | Description | Quantity |
|---|---|---|
| 100-OT00001 | USB isolator for reducing the power noise from PC. Recommended to use with SECG 4.0, MECG 2.0, HRS200, HRS100+, SEEG 100 and SEEG 100E. | 1 |
Optional Calibration Service and Warranty Extension
| Part No. | Description |
|---|---|
| YY0007 | Model No.: C3 Provides (3) years of calibration service coverage. WhaleTeq equipment can be calibrated to original performance on the basis of (1) year interval. |
| YY0008 | Model No.: R3 Extends the limited warranty from (1) year to (3) years. |
Software
Datasheet
User Manual
SDK