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For UTG2025A, versions released in 2018 and later have the function that allows you to connect an external USB, long-press the multifunction knob to take screenshots and save data. Meanwhile, you can also right-click and use the "Save As" option on the host computer to capture and save relevant data. However, for versions prior to 2017, long-pressing the multifunction knob does not have the screenshot function.
This situation typically arises when changing the voltage unit setting, such as switching to dBm. The dBm unit is only valid for a 50 Ω output impedance, so if you select dBm while the output impedance is set to High Impedance, the system will automatically revert the impedance back to 50 Ω to ensure accurate voltage and power calculations.
55011, 55012, 55013, 55014, 55015, 55022
The internal resistance of the signal source is 50 Ω.