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-EEG Testing

CMRR 3.0+

The CMRR tester combining accuracy,convenience and test automation all together. Compliant with IEC 60601-2-25, IEC 60601-2-27, IEC 60601-2-47, IEC 60601-2-26, YY1079, YY1139, YY0782, YY0885, ANSI / AAMI EC11, ANSI/AAMI EC13. Applicable for R&D, compliance and production line testing.

  • Designed for ECG, Patient Monitor, Holter and 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 3.0+ 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.
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 3.0+ None/RA/LA/LL/V1/V2/V3/V4/V5/V6 /ALL
Electrode without Impedance Change electrode via the touch screen of CMRR 3.0+ RA/LA/LL/V1/V2/V3/V4/V5/V6
Imbalance impedance, R 51kΩ 51kΩ ±1%
Imbalance impedance, C 47nF 47nF ± 5%
DC offset Internal battery powered, can be added on RA/ LA/LL/V1~V6 300mV ± 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%


10-75% RH

CMRR 3.0+ Test System
Model No. Description
CMRR 3.0+ Advanced Common mode rejection ratio tester with 11 compound terminals.
Optional Software Add-on Pack
Model No. Description
CMRR Assistant-IEC Auto setup for CMRR tests of IEC60601-2-25/-27/-47 and EC11/13 standards.
CMRR Assistant-E26 Auto setup for CMRR tests of IEC60601-2-26.
CMRR Assistant-YY Auto setup for YY0782/YY0885/YY1079/YY1139 CMRR tests.
Optional Accessories
Model No. Description
ACM008-01 CMRR 3.0+ External case (30x20x13cm) for testing Holter with better shielding performance.
Optional Calibration Service and Warranty Extension
Model No. Description
C3 Provides (3) years of calibration service coverage. WhaleTeq equipment can be calibrated to original performance on the basis of (1) year interval.
R3 Extend the limited warranty from (1) year to (3) years.

Tel:+886-2-2596-0701   Fax:+886-2-2596-0702 E-mail:
Address : 9F, No.27, Minquan W. Rd., Zhongshan Dist., Taipei City 10452, Taiwan
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