nanoVNA: Measuring the Input Impedance of a Filter (068c)

In this video I will be showing you how to use your nanoVNA in stand alone mode to measure the input impedance of a 50 MHz bandpass filter that I threw together. This filter is supposed to have a 50 Ohm input impedance. Let's see what it really is! Included in this video are * Set up the nanoVNA for a impedance measurement * Proper VNA calibration * Add a Port Extension or ELECTRICAL DELAY after calibration * Make the measurement results more readable by changing the SCALE. ====================== === PROMISED LINKS === ====================== nanoVNA -Official- Site (so they claim) https://nanorfe.com/nanovna-v2.html nanoVNA Manual (with menu map) https://nanorfe.com/nanovna-v2-user-manual.html Purchase nanoVNA V2 Plus 4 at https://www.tindie.com/stores/hcxqsgroup/ ====================== ==== VIDEO LINKS ===== ====================== VIDEO: VNA Foundations (first video in the series) https://youtu.be/8IhJMGxU5xA == THIS SERIES == VIDEO#1: nanoVNA: A Practical Menu Walk Through https://youtu.be/_96N3oGFatE VIDEO#2: nanoVNA: Measuring the SWR of an Antenna https://youtu.be/8s420GKsynM ======================================= ---------------------------------- Time Markers for Your Convenience ---------------------------------- 00:05 Introductory Comments 01:29 Planning the Project 01:34 The Electrical Side 02:47 The Mechanical Side 04:36 Setting Stuff Up for the Measurement 04:38 The nanoVNA 04:45 The Frequency Setup 05:30 Setup the Display 05:44 Trace Selection 06:18 Trace Configuration 06:21 Trace 0 06:33 Channel Selection 06:49 Format 07:06 Data Format 07:51 Trace 1 08:08 Channel Selection 08:23 Format 08:49 Bench Connections - Preparing for Calibration 09:05 Calibration 09:25 OPEN 09:37 SHORT 09:47 LOAD 10:10 Saving Calibration and Configuration Data 10:20 Preparations for Measurement 10:23 Installing the SMA-to-N Adapter 10:33 The Port Extension (AKA: Electrical Delay) 10:46 Setup Markers 11:26 Apply the Port Extension 13:08 Get rid of the second trace (TRACE 1) 13:32 Making the Actual Measurement 13:38 Connecting things up 13:43 Terminate the Filter's Output in 50 Ohms 14:01 Connect the Measurement-Ready nanoVNA 14:16 Observe the Screen - too small! 14:22 Changing the Scale 15:22 The Measurement Results 16:18 Final Comments and Toodle-Oots