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12.1
Energy Probe overview
ARM DUI 0482K
ID120712
The Energy Probe is designed to be a low impact, inexpensive solution to give you quick
feedback on the impact of your code on the system energy footprint. It is not intended to be a
high-precision data acquisition instrument for power benchmarking.
It 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.
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 system
•
The voltage at the positive terminals of the Energy Probe.
Copyright © 2010-2012 ARM. All rights reserved.
Non-Confidential
Figure 12-1 Energy Probe schematic
Figure 12-2 Energy Probe electrical connection example
Using the Energy Probe
12-2
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