Tag Archives: CMRR

The Ability of the DI-245 to Reject Common Mode Voltage

Data Acquisition > Thermocouple > DI-245 The ability of the DI-245 to reject common mode voltage is unmatched in the $75 per channel price range. To demonstrate the ability of the DI-245 to reject common mode (error) voltage, we connected K-type thermocouples to channels 1 and 2. With the thermocouple on channel 2 grounded, we Read More

How To Eliminate Noise in Data Logging and Data Acquisition Measurements (Part 4 of 6)

Data Acquisition > Products or Data Logger > Products (Note: A consolidated version of this topic that contains all six part can be found here) Common Mode Rejection Ration (CMRR) We’ve touched on common mode voltage and how its magnitude and frequency can degrade the performance of an isolation amplifier. Now we’ll discuss the differential Read More