SEEG100 EEG performance tester

Via a SEEG 100, the system produces arbitrary waveforms (streamed from the PC with digital to analogue conversion) at up to ±1V, which is then applied to a precision 1000:1 divider to produce the voltages at up to ±1mV level (2mVpp). The SEEG 100 contains resistor/capacitor networks, dc offset, and relay switching to provide the full range of single channel performance tests in IEC and JJG(F) standards. The basic range of tests in the standards include, for example: - Sensitivity (accuracy of the μV/mm indication) - Frequency response (sine wave, and impulse tests) - Input impedance - Noise For a full list of tests, refer to the standard together with Section.

The EEG performance tester designed for regulation testing.
Standard Coverage: IEC 60601-2-26:2012, JJG 1043, JJF 1388, JJF 1390.
Applicable for R&D, compliance and production line testing

• Designed for the latest EEG standard IEC 60601-2-26:2012

• Sophisticated electrical and shielding design enables the test system to output 1μV signal

• 9 channels with auto-select switches for user to test performance individually

• Built-in test circuits as defined in EEG standards with selection of 620kΩ/4.7nF for input impedance test

• Able to load and replay files in PhysioNet's EDF format, binary format and text format

• IEC 80601-2-26 helper simplifies the medical standard with test sequences, options, parameters and pass criterions

• Software Development Kit (SDK) assists user to develop customized or automated test software with less efforts

ParametersSpecificationsSystem capabilityMain output voltage accuracy±1% for amplitudes of 0.2 mVpp or higher±0.3%Main output voltage resolution
(DAC resolution)0.5µV0.5μVFrequency / pulse repetition rate accuracy±1%±0.1%Pulse duration / timing accuracy±1ms±0.2msResistor tolerance±1%±0.5%Capacitor tolerance±5%±5%Precision 1000:1 divider (100KΩ:100Ω)±0.2%±0.05%Sample rate5kHz ± 0.1%5kHz ± 0.05% (50ppm)DC offset 
(fixed, noise free, from internal supercapacitor)300mV ± 1%300mV ±0.1%DC offset 
(variable, may include up to 50µVpp noise)Setting ±1% or ±3mVSetting ±1% or ±3mVPower supplyUSB +5Vdc supply (no separate power supply required) 
0.5A (high power mode)Typical load<0.25A, up to 0.45A is possible if all relays are turned onEnvironment15 ~ 30°C (by design, not tested)
30 ~ 80% RH (by design, not tested)Selection of components is such that no effect from the environment is expected.Safety, EMC standardsNo 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).