EEVblog 1521 - Common Mode Rejection Ratio (CMRR) Explained & Measured

What is Common Mode Rejection Ratio (CMRR) and how to measure it on a high voltage differential probe or differential amplifier. Using the new Rohde & Schwarz MXO4 oscilloscope. Extended 30min version: Differential Probe How It Works: High Voltage Probe reverse engineering: Oscilloscope Standard Deviation noise measurement: Use coupon code ProbeyMcprobeFace for 15% of the HVP70 differential probe: Forum: 00:00 - What is CMRR? 01:53 - Why twist the wires? 03:26 - Typical CMRR figures 04:51 - How to measure CMRR - The Setup 08:54 - Remote R&S Oscilloscope desktop view & settings 11:22 - Output to input voltage ratio 11:58 - Beware of DC offset 13:36 - Does the 20MHz CMRR measaurement match? 14:02 - Input referred measurement 15:02 - Compensating for the gain 16:29 - Automated Frequency Response Analysis Support the EEVblog on: Patreon: Web Site: Other channels: EEVblog2: EEVdiscover: T-Shirts: #ElectronicsCreators #CMRR #Tutorial Теги: eevblog,video,cmrr,common mode rejection ratio,how to measure,oscilloscope,differential amplifier,differential probe,high voltage differential probe,high voltage differential amplifier,cmrr measurement,measurement,bandwidth measurement,common mode,cmrr tutorial,cmrr differential amplifier,cmrr practical,Input referred,rohde and swartz,mxo4,mxo4 oscilloscope,rohde and schwarz,rohde and schwarz mxo4