The EEG CMRR tester combining accuracy,convenience and test automation all together. Compliant with IEC80601-2-26:2019 and applicable for R&D, compliance and production run testing

Overview

  • Designed for EEG CMRR and system noise testing.
  • Double shielding structure to avoid internal and external noise interference.
  • Built-in calibrated sine wave generator and Vc voltage measuring circuit to assure output accuracy level.
  • Touch panel allows user to select test standards and adjust test parameters in standalone usage. PC software mode is available when connecting CMRR 3.0E to PC via USB.
  • CMRR Assistant software pack to simplify the standard into adjustable parameters and selectable options.
  • Software Development Kit (SDK) allows user to develop customized or automated test software with less efforts.Designed for EEG CMRR and system noise testing.
  • Double shielding structure to avoid internal and external noise interference.
  • Built-in calibrated sine wave generator and Vc voltage measuring circuit to assure output accuracy level.
  • Touch panel allows user to select test standards and adjust test parameters in standalone usage. PC software mode is available when connecting CMRR 3.0E to PC via USB.
  • CMRR Assistant software pack to simplify the standard into adjustable parameters and selectable options.
  • Software Development Kit (SDK) allows user to develop customized or automated test software with less efforts.

 

Specification

Item Option Specifications
Supply voltage 0.5 / 2.828 / 20 / 2 / (70.71) (Vrms) ±1%
CM point voltage 1.414 / 10/ 1/ (35.355) (Vrms) ±1% ( 0.25Vrms ±2% )
Frequency 50 / 60 / 100 /120 (Hz) ±1%
Electrode with Impedance Change electrode via the touch screen of CMRR 3.0E None/RA/LA/LL/V1/V2/V3/V4/V5/V6 /ALL
Electrode without Impedance Change electrode via the touch screen of CMRR 3.0E RA/LA/LL/V1/V2/V3/V4/V5/V6
Imbalance impedance, R 10kΩ 10kΩ ±1%
Imbalance impedance, C 47nF 47nF ± 5%
DC offset Internal battery powered, can be added on RA/ LA/LL/V1~V6 150mV ± 1% Up to 40hrs with intermittent use
100 pF capacitor Use 11:1 (110MΩ:10MΩ) voltage divider to measure indirectly 100pF ± 5%
Environment Intended for normal laboratory environment. The selection of critical components is known to be stable in the range shown. The 110MΩ divider may be affected by high humidity in excess of 85% 15 – 30°C
10 – 75% RH

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