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Voltage & current measurement

Overview Panel

This meter can measure voltage and current. The main panel of the measurement is as follows:

metering

There are 3 readings shown in big fonts, U shows the voltage，I shows the current，and P shows the power. There are instantaneous bar graphs below the readings to catch faster movements.

Click the middle button to switch to other measurement panels.

Detailed measurement manual

There are more detailed data displayed in this panel:

Detail

  • The voltage and the current on the VBUS.

  • The voltage on the USB D+.

  • The voltage on the USB D-.

  • The power on the VBUS.

  • The self current consumption of the meter.

  • The fast-charge protocol that has been negotiated between the charger and the load device.

  • The voltage and the current that has been negotiated between the charger and the load device.

Taring

"Taring" is a patented feature of this meter, which allows the meter to accurately display the input or output current (the difference between the two is the meter's own power consumption).

Traditional Type-C meters cannot eliminate the impact of their own power consumption on the measurement. These meters will read out as 0mA when powered from one side, and read out their own power consumption when powered from the other side. The user cannot clearly determine whether the current is input current or output current.

Long-press the middle key on home panels to enter the main menu, select "Display", and then look down to the "Taring" option. In the "Taring" option, you can choose among "Tare to meet output", "Tare to meet input" and "Show raw readings". When "Tare to meet output" or "Tare to meet input" is set, the meter can display accurate current regardless of the actual power direction.

When the host power supply (PC port) is present, the meter itself stops taking power from the circuit to be tested and instead takes power from the host power supply port. This option has no meaning since the input and output currents are the same.

Refresh Rate

Long-press the middle key on home panels to enter the main menu, select "Display", and then look down to the "Refresh" option. In the "Taring" option, you can choose among "Tare to meet output", "Tare to meet input" and "Show raw readings". When "Tare to meet output" or "Tare to meet input" is set, the meter can display accurate current regardless of the actual power direction.

This option sets the refresh rate of the meter's readings. There is a specific update rate for each choice. For example, 5sps means readings update 5 times per second.