Uploaded August 2026 | Updated September 2026, 3 weeks ago

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This video shows how to measure the characteristics of RF circulators and isolators using a Rohde & Schwarz ZNB3000 series vector network analyzer.

Understanding Circulators and Isolators: youtu.be/ApV7E2rzSW0

Rohde & Schwarz ZNB3000 vector network analyzer: rohde-schwarz.com/us/products/test-and-measurement/network-analyzers/rs-znb3000-vector-network-analyzer_334291.html

Test and Measurement Fundamentals Playlist: youtube.com/playlist?list=PLKxVoO5jUTlvsVtDcqrVn0ybqBVlLj2z8

Timeline:
00:00 Introduction
00:17 Suggested viewing
00:36 Using VNAs to measure circulators / isolators
01:25 Overview of transmission measurements
01:55 Selecting the measurement type
02:50 Configuring the frequency range
03:19 Configuring the source power
03:57 Configuring sweep size / step size
04:43 Configuring IF bandwidth
05:29 Performing calibration
06:21 Example: measuring circulator insertion loss (S21)
07:12 Example: measuring circulator isolation (S12)
08:11 Summary