Uploaded September 2022 | Updated September 2026, 1 week ago

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How to probe DDR4 memory signals, what to look for on the oscilloscope and how to run DDR4 compliance tests. Thank you very much to Maurizio Mastrofini and Teledyne LeCroy

Links:
- Maurizio's Linkedin linkedin.com/in/maurizio-mastrofini-6807115
- Teledyne LeCroy: teledynelecroy.com
- FEDEVEL courses: courses.fedevel.com

Chapters:
00:00 What is this video about
00:36 Connecting probes to DDR4 signals and about interposers
06:31 Virtual probes - models and mathematics in oscilloscope
22:20 How to measure DDR4 signals, dumping resistors, probes
30:04 What DDR4 signals to measure
32:21 How to identify DDR4 Read and Write cycles
39:22 Real DDR4 measurement (Live), Read and Write Latency explained
51:38 DDR4 bursts measurements
55:00 Setting up an automatic / compliance DDR4 interface test
1:01:32 Explaining DDR4 test results
1:06:23 Running a DDR4 compliance test
1:11:18 Understanding and interpreting DDR4 test results - example
1:17:07 What probes and oscilloscope to use to measure DDR4
1:19:06 DDR probing techniques

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