The Power Delivery protocol (And its subsets, e.g., PPS) must be triggered at power-up time.
The meter can be connected to the charging port in two ways: direct connection and connection through cable. The sketches of the two methods are as follows:
If the meter is directly connected to the charging port, you can press any of the left and right keys to power the meter on.
Connect through a cable¶
If the meter is connected to the charging head through a cable, only one of the left and right keys can power on the meter. Press the button on any side and hold it for 3 seconds. If the screen does not light up, press it on the other side to power the meter on.
After power-on, you have three options; we explain them to you one by one as follows:
- Keep Power Only The meter won't respond to PD messages; it only pulls down the CC line. With this option, you cannot trigger PD fast charge, but you can start triggering other protocols.
- Start PD Trigger Pull down the CC line, respond to the PD message, and enter the PD trigger panel. If you want to trigger PD, you need to select this option within a certain period after power-on; otherwise, the communication could time out.
- Power Off Release the pull-down on the CC line. This option will stop the charging port from supplying power; thus, the meter will be shut down.
PD trigger panel¶
After entering the PD trigger panel, the meter displays the current and voltage supported by the charging port. Like the following example:
The items with "Fix" represent fixed voltage PDOs, and the items with a voltage range represent PPS PDOs with adjustable voltages. Scroll to the left or right to select an item, and then press the middle button to trigger this PDO.
For a fixed voltage PDO, after the voltage is triggered, there will be a tick on its right side indicating the trigger is successful.
For a PPS PDO, click the middle button to enter the PPS trigger panel. On this panel, the upper two readings show the real-time voltage and current, and the lower-left represents the target voltage set by the current protocol communication. The lower-right represents a single adjustment interval. Scroll the key to the left or right to adjust the voltage. Double-click the middle button to return to the previous panel.
On the home panel, click the left button to enter the fast-charge trigger panel. Select the protocol you want to trigger on the trigger panel, and then press the middle button to enter.
For example, if you want to trigger the QC2.0 protocol, select the QC2.0 protocol, click the confirm button, wait for the completion of the communication, and the meter will enter the trigger panel of the corresponding protocol. The specific panel of each protocol are shown in the figure below.