This is a short tutorial that presents how you can monitor the SoC power information in an Android system as measured by VMX® DC-Meter™.
1. Power Data
The power data consists in:
- power information obtained from the DC-Meter energy meter on one or both of the channels.
1.1. Necessary steps to connect the DUT to DC-Meter
The steps that you have to take to have the DC-Meter prepared for power measurements are:
1. Have a connection between the PC’s USB port and emeter USB port by using an USB-B cable
2. Have emeter connected to power supply (positive terminal (+) and negative terminal (”ground”)
3. Configure the DC-Meter on the workstation by installing the required drivers (on both Windows and Linux operating systems), depending on measurement setup details. These drivers are automatically installed with XPerf.
4. Have a Power Supply Unit set up with the correct voltage for the handset device (normally between 3.8 and 4.4 V)
5. Turn the meter ON using the dedicated switch.
1.2. Typical scenarios
See the meter in action below.
- One channel only (single-channel):
- Two channels running in parallel (dual-channel):