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{{AppliesToAxelLite}}
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{{ObsoleteWikiPage|link=AXEL_Lite_SOM/AXEL_Lite_Hardware/Electrical_Thermal_and_Mechanical_Features/Operational_characteristics}}
==Introduction==
Several configurations have been tested in order to provide figures that are measured on real-world use cases instead. Please note that AXEL LITE platform is flexible, so it is virtually impossible to test for all possible configurations and applications on the market. The use cases here presented should cover most of real-world scenarios. However actual customer application might require more power than values reported here. Generally speaking, application specific requirements have to be taken into consideration in order to size power supply unit and to implement thermal management properly.
Tests have benn performed using DXLH SOM (Quad core CPU) limited to 1 or 2 cores actives.
== Set #1 ==
The following paragraphs report the power consumption measurements for the following typical use cases, using different core #/clock speed configurations, detailed in the following sections:
* U-Boot prompt
* Linux prompt
* CpuBurn
* GPU test
* VPU test
=== Testbed ===
* Carrier board: AxelEVB-Lite Adapter + AxelEVB-Lite + DACU
* System software: XELK 2.0.0
* Power monitor: INA226a custom current/voltage/power probe has been connected to the power rail of the SOM (for more details please refer to the net 2V8-4V5_SOM of the [[AxelEVB-Lite#Schematics|AxelEVB schematics]]).
=== Use cases results ===
* VPU test: gst-launch -vvv playbin2 uri=file:///home/root/big_buck_bunny_1080p_surround.avi
** decoding of a H.264 1080p30 video
== Standby ==
The following paragraphs report the power consumption measurements when the system is in standby state.
=== Testbed ===
Measurements have been performed on the following platform:
* Carrier board: AxelEVB-Lite Adapter + AxelEVB-Lite + DACU
* System software: XELK 2.0.0
* Power monitor: INA226
=== Use case results ===
{|class="wikitable"
|-
!Voltage
!Average current (mA)
!Power absorption (mW)
|-
| 3.3V SOM ||51,7||'''170,61'''
|-
|}
Additional notes and reference:
* The system enters standby after launching the following commands:
<pre>
# set wakeup source
echo enabled > /sys/devices/soc0/soc.1/2000000.aips-bus/2000000.spba-bus/2020000.serial/tty/ttymxc0/power/wakeup
# enter standby
echo mem > /sys/power/state
</pre>