The Energy Probe is designed to be a low impact, inexpensive solution to give application
and system software developers quick feedback on the impact of their code on the system
energy footprint. It is intended to provide a better understanding of the static and
dynamic behavior of the target system for the purposes of debugging, profiling, and
analysis. It is not intended to be a high-precision data acquisition instrument for
The Energy Probe has three power connectors, each of which is designed to connect to a 2-pin
header for measuring the power. This allows the energy probe to provide three
independent power, current, or voltage measurements.
Figure 10-1 Energy Probe schematic
In addition to the three power connectors, the Energy Probe has a single pin GND
connector that must be connected to ground on your target board. It provides a
ground connection for the Energy Probe.
Each of the three power connectors measures:
- The current flow through a shunt resistor of a known value on your target
- The voltage at the positive terminals of the Energy Probe.
Figure 10-2 Energy Probe electrical connection example
CautionThe Energy Probe has flying leads and must be carefully connected to your target. Do
not plug the green ground wire into anything but the target ground. This includes I/O
pins and power pins. Doing so could cause damage to your Energy Probe or the power
supply of your target.