Understanding Directional Power Measurements
Jan 15, 2026•Channel
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Video Overview
Video Details
Published5 months ago
Duration8:37
Video IDUwvyF7l4OVY
Languageen
CategoryScience & Technology
PrivacyPublic
Made for KidsNo
Video TypeRegular Video
Performance Metrics
Views131
Likes16
Comments2
Engagement Rate13.74%
Likes per 100 views12.21
Comments per 1K views15.27
Description
This video provides a brief overview of directional power measurements and the different devices that can be used to measure directional power
RF and Microwave Power Sensors from Rohde & Schwarz
https://www.rohde-schwarz.com/products/test-and-measurement/rf-and-microwave-power-meters_63672.html
Understanding VSWR and Return Loss: https://www.youtube.com/watch?v=BijMGKbT0Wk
Test and Measurement Fundamentals Playlist: https://www.youtube.com/playlist?list=PLKxVoO5jUTlvsVtDcqrVn0ybqBVlLj2z8
Getting Started with NRT Directional Power Sensors: https://www.youtube.com/watch?v=Y_OwloaBl2s
Getting Started with the CMA180 – NRT-Z Measurements: https://www.youtube.com/watch?v=4cUZ0wcdBzo
00:00 Introduction
00:16 Understanding VSWR and Return Loss
00:35 About terminating power measurements
01:38 About directional power measurements
02:32 Devices used in measuring directional power
02:50 About unidirectional wattmeters
03:38 About bidirectional wattmeters / SWR meters
04:25 Measurements with terminating power sensors
05:29 Measurements with directional power sensors
06:40 Summary
This video provides step-by-step instructions for both generating and analyzing SELCAL tones using a CMA180 radio test set
Understanding SELCAL: https://www.youtube.com/watch?v=Ky7uGIUS8DQ
The R&S CMA180 Radio Test Set: https://www.rohde-schwarz.com/us/products/test-and-measurement/wireless-tester-rf-analyzer-generator/rs-cma180-radio-test-set_63493-56068.html
Getting Started with the CMA180 Playlist: https://www.youtube.com/playlist?list=PLKxVoO5jUTltXP-GewIlLtPM1Sdhai_C6
Test and Measurement Fundamentals Playlist: https://www.youtube.com/playlist?list=PLKxVoO5jUTlvsVtDcqrVn0ybqBVlLj2z8
Timeline:
00:00 Introduction
00:15 Suggested viewing
00:31 About SELCAL testing with the CMA180
01:14 Starting SELCAL generation
01:28 Generator main screen
01:56 Generator settings – frequency, level, and connector
02:37 Generator settings – AF output
03:12 SELCAL settings
04:12 Dialing
04:40 Starting SELCAL analysis
05:01 Analyzer main screen
05:41 Dialing configuration
06:22 SELCAL decode results
06:52 Summary