RM-6240BD multi-channel physiological signal acquisition and processing system

Introduction:

    The system uses a true external structure. It is suitable for laptops as well as desktop computers. Interface with computer: USB2.0. Since the internal A/D acquisition part of the system uses a separate circuit board (in an external chassis), no matter how the interface technology of the computer develops, the instrument can adapt to the development of the computer by replacing the A/D collector module and the corresponding software. Instrument upgrade is very convenient. The stimulator uses an optically coupled full isolation system and the ECG has 12 lead modes with international standards.

Technical Parameters:

1. The instrument adopts integrated anti-interference power supply, and the power supply exchanges 220V. Except for the built-in transformer of the chassis, there is no need to connect any transformers outside, thus ensuring that the bioelectricity of the instrument can be ensured without any external ground wire when performing any bioelectricity experiment. The signal is clear and accurate. Thereby ensuring the anti-interference performance and accuracy of the machine.

2. The instrument has 4 channels (eight channels for 8 channels), all of which are multi-function full-controlled isolated amplifiers. The amplifier of each channel can be used as a bioelectric amplifier, a blood pressure amplifier, a bridge amplifier, and can also be used as a spirometer, a thermometer, and the like. Each channel has independent hardware modules, which are independent of each other, greatly increasing the anti-interference ability between the channels, and also bringing great convenience to the maintenance and repair of the instrument.

3. Using high-precision 16-bit A/D conversion chip, the maximum sampling rate of single-channel hardware is 1000KHz. The minimum hardware sampling rate is 0.01Hz. The maximum sampling frequency is 200 kHz for four-channel continuous sampling, and the sampling rate can be changed as needed during real-time sampling.

4. Scanning speed: 0.05ms/div~3200s/div.

5. Amplifier input resistance ≥100MΩ (double-ended input) and 50MΩ (single-ended input), common mode rejection ratio ≥100dB, noise ≤±1μV (RMS) or ≤±3μV (P-P).

6. Frequency response: DC~20kHz.

7. Input range: 5μV~500mV.

8. Sensitivity:

  a) Bioelectric mode: 20uV/div~500mV/div

  b) Blood pressure mode 3.6-360 (mmHg/div) 0.36-180 (mmHg/div) (high sensitivity transducer)

9. AC and DC have the same gain: range 500mv, 200mv, 100mv, 50mv, 20mv, 10mv, 5mv, 2mv, 1mv, 500uV, 200uV, 100uV, 50uV, 20uV, 10uV adjustable; can directly input 10V electrical signal The amplifier is not saturated.

10. Low-pass filtering (hardware): 0.3 Hz, 3 Hz, 10 Hz, 30 Hz, 100 Hz, 500 Hz, 1 kHz, 3 kHz, 10 kHz, OFF (20 kHz). It has a filtering method of 5 or more steps.

11. Time constant (hardware): 0.001 s, 0.002 s, 0.02 s, 0.2 s, 1 s, 5 s, DC.