・Measure the 2/4 EEG waveforms in real time.
・Real-time transmission of the power spectrum parameters calculated based on EEG signals.
・Calculate the signal quality index and evaluate the signal quality according to the EEG signals in real time.
・Average time setting function of calculation parameters to obtain different response times of calculation parameters.
・12V DC power supply, the system with DC / DC power supply, meet the safety isolation requirements.
Input signal range:+/- 1000uV DC current offset voltage > +/- 400 mV
Co-mode inhibition ratio > 105 dB Lease current < 10 uA
Input noise < 1 uV RMS (1-30 Hz) Input protection: 2kV
Input impedance > 20M （10Hz）
Power supply DC.12V±5%
Power consumption ≤3W
Communication TTL,USART
Temperature Operating 0°C~ 70°C Storage -40°C~ 70°C
Humidity 5%~95% (no condensation) Storage: 5%~95% (no condensation)
The board dimensions are given in millimeters.
| The pin
number | function symbol | function declaration | |
| 1 | EEG1+ | Channel 1 with the EEG forward input end | |
| 2 | EEG1- | Channel 1 with the EEG negative input end | |
| 3 | EEG2+ | Channel 2 with the EEG forward input end | |
| 4 | EEG2- | Channel 2 with the EEG negative input end | |
| 5 | EEG3+ | Channel 3 with the EEG forward input end | |
| 6 | EEG3- | Channel 3 with the EEG negative input end | |
| 7 | EEG4+ | Channel 4 with the EEG forward input end | |
| 8 | EEG4- | Channel 4 with the EEG negative input end | |
| 9 | GND_SHIELD | Mask interface | |
| 10 | EEG_FEEDBACK | Feedback interface | |
| 11 | GND | grounding electrode | |
| 12 | unused | Not connected (reserved) |
Note: J2 refers to the socket connected to the sensor.
| The pin
number | Function symbol | Function declaration | Remarks |
| 1 | TXD | Communication terminal (outgoing) | |
| 2 | RXD | Communication terminal (received) | |
| 3 | CHGND | Landing | |
| 4 | DC12V | The 12V power supply input | +12V |
Schematic diagram of the J1 socket
MEEG4C MEEG4 Multi-parameter_05