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RSS FeedsData Acquisition > Products or Data Logger > Products (Note: A consolidated version of this topic that contains all six part can be found here) Common Mode Voltages and Non-isolated Instruments You’ve arrived at part six of this series because you have noise on one or more acquired analog channels. Using procedures described in Part Read More
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How To Eliminate Noise in Data Logging and Data Acquisition Measurements (Part 5 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) Proper Shielding Techniques We’ve established that isolation amplifiers do not perform well in the presence of large, high frequency common-mode voltages. Now we’ll focus on eliminating high level, high frequency 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
How To Eliminate Noise in Data Logger and Data Acquisition Measurements (Part 3 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) Effects of Common Mode Voltage Frequency We’ve covered evaluating noise magnitude to see if noise elimination is worth the time and effort, and a procedure to test the instrument for Read More
How To Eliminate Noise in Data Logger and Data Acquisition Measurements (Part 2 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 Voltages and Isolated Instruments In the premier edition of this series I talked about how you should initially approach noise elimination. The first step is to ensure that Read More
How To Eliminate Noise in Data Logger and Data Acquisition Measurements (Part 1 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) This happens almost daily: A customer contacts our support group to complain of noise on his measurement. Almost invariably a comparison is made between the output of his PC-based product Read More
Calibrating to Display Engineering Units
Data Acquisition > Software > WinDaq As explained a few blog posts ago, PC based data acquisition is the process by which electrical signals (from sensors) are fed into electronic instruments, digitized and stored on a PC hard drive. To be of any real use however, these signals must be converted into meaningful engineering units Read More
Breaking Down Lengthy Recordings
Data Acquisition > Software > WinDaq When acquiring data, in most circumstances, it’s more practical to record several smaller files as opposed to one very large file. Perhaps you want to record continuously, until an event occurs, without filling up your hard drive with useless information? WinDaq data acquisition software includes tools to automate these Read More
Context-sensitive Help
Data Acquisition > Software > WinDaq Have you tried lately to access the help file for a fairly complex application? There’s a lot of information in there and digging through it to find the one nugget necessary for the task at hand can be time consuming. That’s why, a very long time ago, the Wizards Read More
How To Put Signal Noise Into Perspective
Data Acquisition > Software > WinDaq A customer contacted our support group the other day to complain about noise on his load cell signal and asking for the best way to remove it. We’ve seen this movie before and asked for a sample in the form of a recorded WinDaq data file so we could Read More