Difference between revisions of "iMX6 Rex EMC testing"
Jump to navigation
Jump to search
| Line 3: | Line 3: | ||
<div style="float:right">__TOC__</div> | <div style="float:right">__TOC__</div> | ||
| − | Electromagnetic compatibility results for iMX6 Rex Development kit are shown on this page. Test setup and scripts are described in | + | Electromagnetic compatibility results for iMX6 Rex Development kit are shown on this page. Test setup and scripts are described in details.<br /> |
[[image:iMX6_Rex_Development_kit-EMC_measurement_setup.jpg|800px]] | [[image:iMX6_Rex_Development_kit-EMC_measurement_setup.jpg|800px]] | ||
<br /><br /> | <br /><br /> | ||
[[image:iMX6_Rex_Development_kit-EMC_measurement_cable_setup.jpg|800px]] | [[image:iMX6_Rex_Development_kit-EMC_measurement_cable_setup.jpg|800px]] | ||
| − | <br /> | + | |
| + | == Connected cables/devices == | ||
| + | * '''Power jack:''' +12V from an isolated source | ||
| + | * '''SD card 1 (the one on the PCB edge):''' preloaded with filesystem and used for booting | ||
| + | * '''SD card 2 (the one under heatsink):''' used for read/write testing | ||
| + | * '''RTC Battery:''' inserted in the holder | ||
| + | * '''Ethernet:''' Ethernet loopback cable connected. Forced to 100Mb and used for ping test | ||
| + | * '''HDMI monitor:''' during the test, the monitor is connected but turned off | ||
| + | * '''2x USB memory stick:''' each connected through an extension cable. Both used during read/write test | ||
| + | * '''RS232:''' a null modem cable connected. During the test, the cable was terminated with an RS232 to USB converter | ||
| + | * '''SATA CFAST card (without the metal card holder):''' used for read/write testing | ||
| + | * '''Headphones & Microphone:''' standard headphones connected to the headphones and microphone jack | ||
| + | * '''Audio loopback:''' a cable connected between Line in and Line out | ||
| + | * '''Wifi PCIE mini card:''' inserted, but not actively used. No antennas connected | ||
| + | * '''Modem:''' inserted, but not actively used. No antennas connected, no SIM card inserted | ||
| + | |||
| + | == Test description == | ||
| + | The goal of this test was to check Radiated and Conducted emission of iMX6 Rex Development kit while running at very high load.<br /><br /> | ||
| + | |||
| + | Running threads: | ||
| + | * CPU stress test | ||
| + | * Memory stress test | ||
| + | * GPU stress test (running a Full HD graphics test at rate 150 frames per second) | ||
| + | * Linux GUI | ||
| + | * Playing a video file | ||
| + | * Playing an audio file | ||
| + | * SD card test (SD card read & write stress test) | ||
| + | * 2x USB test (USB memory stick read & write stress test) | ||
| + | * SATA test (CFAST SSD card read & write stress test) | ||
| + | * Ethernet ping | ||
| + | |||
| + | == Results == | ||
| + | |||
| + | === Radiated emission === | ||
| + | All the results were measured below the emission limits for FCC Class B (EMC standard EN55022B). Class B devices are suitable for both residential and industrial applications as they are in compliance with more restrictive limits. | ||
| + | |||
| + | ==== Running Linux Only - PASS ==== | ||
| + | ===== Vertical polarization ===== | ||
| + | [[image:iMX6_Rex_Development_kit-EMC_results-Linux_only_vertical.jpg|800px]] | ||
Revision as of 09:40, 26 March 2021
Electromagnetic compatibility results for iMX6 Rex Development kit are shown on this page. Test setup and scripts are described in details.
Connected cables/devices
- Power jack: +12V from an isolated source
- SD card 1 (the one on the PCB edge): preloaded with filesystem and used for booting
- SD card 2 (the one under heatsink): used for read/write testing
- RTC Battery: inserted in the holder
- Ethernet: Ethernet loopback cable connected. Forced to 100Mb and used for ping test
- HDMI monitor: during the test, the monitor is connected but turned off
- 2x USB memory stick: each connected through an extension cable. Both used during read/write test
- RS232: a null modem cable connected. During the test, the cable was terminated with an RS232 to USB converter
- SATA CFAST card (without the metal card holder): used for read/write testing
- Headphones & Microphone: standard headphones connected to the headphones and microphone jack
- Audio loopback: a cable connected between Line in and Line out
- Wifi PCIE mini card: inserted, but not actively used. No antennas connected
- Modem: inserted, but not actively used. No antennas connected, no SIM card inserted
Test description
The goal of this test was to check Radiated and Conducted emission of iMX6 Rex Development kit while running at very high load.
Running threads:
- CPU stress test
- Memory stress test
- GPU stress test (running a Full HD graphics test at rate 150 frames per second)
- Linux GUI
- Playing a video file
- Playing an audio file
- SD card test (SD card read & write stress test)
- 2x USB test (USB memory stick read & write stress test)
- SATA test (CFAST SSD card read & write stress test)
- Ethernet ping
Results
Radiated emission
All the results were measured below the emission limits for FCC Class B (EMC standard EN55022B). Class B devices are suitable for both residential and industrial applications as they are in compliance with more restrictive limits.
