Understanding Error Vector Magnitude (EVM)

This video explains the fundamental concepts behind error vector magnitude (EVM), including what EVM is, how EVM is measured, and best practices when making EVM measurements. Understanding APSK and QAM: https://www.youtube.com/watch?v=1xGncBvWv6U More about Rohde & Schwarz Spectrum Analyzers: https://www.rohde-schwarz.com/us/products/test-and-measurement/signal-spectrum-analyzers/pg_overview_63665.html?cid=802_us_smo_ALL__21-03_a______yt_TMfundmntls_EVM Learn more about EVM: https://www.rohde-schwarz.com/us/products/test-and-measurement/analyzers/signal-spectrum-analyzers/understanding-error-vector-magnitude_258370.html?mid=31615&midx=smo-yt_____evm Do you know your EVM? https://www.rohde-schwarz.com/us/applications/do-you-know-your-evm-application-card_56279-787578.html?cid=802_us_smo_ALL__21-03_a______yt_TMfundmntls_EVM R&S®FSW-K70 Measuring the BER and the EVM for Signals with Low SNR - Application Sheet: https://www.rohde-schwarz.com/us/manual/r-s-fsw-k70-measuring-the-ber-and-the-evm-for-signals-with-low-snr-application-sheet-manuals-gb1_78701-205888.html?cid=802_us_smo_ALL__21-03_a______yt_TMfundmntls_EVM Need help with Rohde & Schwarz products & services? Contact Us: https://www.rohde-schwarz.com/us/m4c/contact-us_253202.html?cid=802_us_smo_ALL__20-08_i______yt_TMfundmntls_ Amplifier Masterclass - A discussion of EVM: https://www.youtube.com/watch?v=YT5qVqOWPpo Timeline: 00:00 Introduction 00:17 Suggested Viewing 00:41 About digital modulation 01:44 About error vector magnitude (EVM) 03:05 Contributors to EVM 04:25 EVM and modulation order 05:27 Calculating EVM 06:19 EVM results 07:04 EVM vs. time / symbol 07:46 EVM vs. frequency 08:44 EVM vs. power 09:25 EVM vs. power vs. frequency 09:58 Instruments for measuring EVM 10:42 Measurement best practices 11:55 Summary