The EEG CMRR tester combining accuracy, convenience and test automation all together.
Compliant with IEC 80601-2-26:2019 and applicable for R&D, compliance and production run testing.
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  • Designed for EEG CMRR and system noise testing
  • Extreme 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
  • Exclusive shielding covers can be added for higher CMRR requirement
  • Touch screen maximizes the test efficiency in standalone operation
  • PC software operation allows to control and conduct test via mouse clicks
  • Optional Standard Assistant software pack 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


Supply voltage0.5 / 2.828 / 20 / 2 / (70.71) (Vrms)±1%*
CM point voltage1.414 / 10 / 1 / (35.355) (Vrms)±1% (0.25Vrms ±2%)
Frequency50 / 60 / 100 / 120 (Hz)±1%
Electrode with ImpedanceChange electrode via the touch screen of CMRR 3.0ENone / RA / LA / LL / V1 / V2 / V3 / V4 / V5 / V6 / ALL
Electrode without ImpedanceChange electrode via the touch screen of CMRR 3.0ERA / LA / LL / V1 / V2 / V3 / V4 / V5 / V6
Imbalance impedance, R10kΩ10kΩ ±1%
Imbalance impedance, C47nF47nF ± 5%
DC offsetInternal battery powered, can be added on RA / LA / LL / V1~V6150mV ± 1%
Up to 40hrs with intermittent use
100pF capacitorUse 11:1 (110MΩ:10MΩ) voltage divider to measure indirectly100pF ± 5%
EnvironmentIntended 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

*Require to measure with the multimeter of higher accuracy.

Ordering information

CMRR 3.0E Test System

Part No.DescriptionQuantity
100-CM00004Model No.: CMRR 3.0E
EEG CMRR tester with 11 compound terminals for IEC 80601-2-26:2019


Optional Software Add-on Pack 

Part No.Description
HA0-CM0Y001Auto setup for CMRR tests of IEC 80601-2-26


Optional Accessories

Part No.DescriptionQuantity
100-CM00005Model No.: CM30ESBX
External case (30 x 20 x 13cm) for testing with better shielding performance


Optional Calibration Service and Warranty Extension

Part No.Description
YY0007Model No.: C3
Provides (3) years of calibration service coverage. WhaleTeq equipment can be calibrated to original performance on the basis of (1) year interval.
YY0008Model No.: R3
Extends the limited warranty from (1) year to (3) years.


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