Tap ‘Calibrate’, then follow the on-screen instructions to perform open, short, and load calibration.Į. Connect the open, short, and load calibration standards provided with the device to the Port 1 (CH0) one by one.ĭ. Power on the NanoVNA-H4: Press and hold the power button on the device for a few seconds until the display turns on.Ĭalibrate the NanoVNA-H4: Before making any measurements, it is essential to calibrate the device to ensure accurate results. Here’s a step-by-step guide to measure SWR using the NanoVNA-H4: SWR is an essential parameter for assessing the impedance match between a transmitter and an antenna, or any RF transmission line. Measuring the Standing Wave Ratio (SWR) on a NanoVNA-H4 Vector Network Analyzer is a straightforward process.
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