iMX8M Industrial EMC testing - Revision history

Voipac at 13:41, 14 October 2025

2025-10-14T13:41:13Z

Voipac at 13:51, 11 September 2024

2024-09-11T13:51:15Z

Voipac at 12:21, 17 May 2023

2023-05-17T12:21:24Z

Voipac at 12:20, 17 May 2023

2023-05-17T12:20:23Z

Voipac at 12:18, 17 May 2023

2023-05-17T12:18:37Z

Voipac at 12:17, 17 May 2023

2023-05-17T12:17:58Z

Voipac at 12:16, 17 May 2023

2023-05-17T12:16:06Z

Voipac at 12:15, 17 May 2023

2023-05-17T12:15:27Z

Voipac at 13:01, 10 May 2023

2023-05-10T13:01:29Z

Voipac at 13:45, 6 April 2023

2023-04-06T13:45:15Z

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 Electromagnetic compatibility results for iMX8M Industrial Development Kit are presented on this page. Test setup and scripts are described in details.<br />
-These tests were performed with setups using the standard hardware and software configurations of the web shop development kits.
+These tests were performed with setups using the standard hardware and software configurations of the web shop development kits, with multiple accessories actively used, to simulate a real-world operation.
 The certificate measurements were carried out on the iMX8M Industrial Development Kit in Pro version as this configuration delivers the best price-performance ratio and is the most popular amongst the customers. Other configurations - Max and Basic were also tested both passing the EMC radiated and conducted emmissions Class B norm. As the differences in the results were negligible, this web page focuses on the certificated measurements of the [https://www.voipac.com/imx8m-industrial-development-kit-pro Pro configuration] of the development kit.

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 * development kit in standard webshop Pro configuration:
 ** iMX8M Industrial Module Pro in Commercial temperature range
-** iMX8M Development Baseboard in Extended temperature range
+** iMX Development Baseboard in Extended temperature range
 * CPU heavy testing threads using stressapptest
 * DDR4 memory heavy testing threads using stressapptest
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 ==== Conducted Emissions ====
 The measurement was performed by a clamp indirect method.<br />
-Enhanced input power protection on the iMX8M Development Baseboard does not allow direct line impedance stabilisation network (LISN) method to be used.<br /><br />
+Enhanced input power protection on the iMX Development Baseboard does not allow direct line impedance stabilisation network (LISN) method to be used.<br /><br />
 [[image:iMX8M_Industrial_Development_Kit-EMC_CE.jpg|800px]]<br /><br />
@@ Line 100: / Line 100: @@
 * development kit in standard webshop Pro configuration:
 ** iMX8M Industrial Module Pro in Commercial temperature range
-** iMX8M Development Baseboard in Extended temperature range
+** iMX Development Baseboard in Extended temperature range
 * CPU heavy testing threads using stressapptest
 * DDR4 memory heavy testing threads using stressapptest
@@ Line 139: / Line 139: @@
 * development kit in standard webshop Pro configuration:
 ** iMX8M Industrial Module Pro in Commercial temperature range
-** iMX8M Development Baseboard in Extended temperature range
+** iMX Development Baseboard in Extended temperature range
 * CPU heavy testing threads using stressapptest
 * DDR4 memory heavy testing threads using stressapptest

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 * [https://www.voipac.com/digilent-mipi-csi-camera-set Digilent MIPI-CSI Camera Set] capturing video stream
 * DisplayPort output tested in Full-HD 1920x1080 resolution
-* [https://www.voipac.com/wifi-and-bluetooth-antennas-set two antennas with cables]
+* [https://www.voipac.com/wifi-and-bluetooth-antennas-set two antennas with cables] actively used
 * cables and devices plugged in but not actively used:
 ** [https://www.voipac.com/can-bus-module CANbus Module]
@@ Line 146: / Line 146: @@
 * [https://www.voipac.com/digilent-mipi-csi-camera-set Digilent MIPI-CSI Camera Set] capturing video stream
 * HDMI output tested in Full-HD 1920x1080 resolution
-* [https://www.voipac.com/wifi-and-bluetooth-antennas-set two antennas with cables]
+* [https://www.voipac.com/wifi-and-bluetooth-antennas-set two antennas with cables] actively used
 * cables and devices plugged in but not actively used:
 ** USB-C

@@ Line 50: / Line 50: @@
 * [https://www.voipac.com/digilent-mipi-csi-camera-set Digilent MIPI-CSI Camera Set] capturing video stream
 * [https://www.voipac.com/newhaven-lvds-capacitive-display-set LCD Newhaven LVDS Capacitive Display Set] actively used
-* [https://www.voipac.com/wifi-and-bluetooth-antennas-set two antennas with cables]
+* [https://www.voipac.com/wifi-and-bluetooth-antennas-set two antennas with cables] actively used
 * cables and devices plugged in but not actively used:
 ** USB-C

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 * '''2x USB 3.0:''' SanDisk Ultra Flair 16GB USB 3.2 Gen 1, each connected through a 1m long USB 3.2 Gen 1 extension cable (Molex P/N: 0687890035). Both used during read/write test
 * '''USB-C:''' Kingston DataTraveler 80 32GB USB 3.2 Gen 1, connected through USB-C extension cable (Cable P/N: FCR72003)
-* '''Camera:''' [https://www.voipac.com/digilent-mipi-csi-camera-set Digilent MIPI-CSI Camera Set] plugged to the baseboard, recognised by the kernel, active and capturing video stream. Ferrite bead added on the ribbon cable connecting the kit and the camera module (P/N: Würth Elektronik 742 721 1)
+* '''Camera:''' [https://www.voipac.com/digilent-mipi-csi-camera-set Digilent MIPI-CSI Camera Set] plugged to the baseboard, recognised by the kernel, active and capturing video stream. Ferrite bead added on the ribbon cable connecting the kit and the camera module (Würth Elektronik P/N: 742 721 1)
 * '''CAN:''' [https://www.voipac.com/can-bus-module CANbus Module] inserted, not actively used during testing. CAN cable not connected
 * '''WiFi and Bluetooth:''' Soldered directly on COM, placed in active scanning and discoverable mode, contributing to EMC spectrum. Depending on the temperature range, the default CM-276NF or alternative SPB228-D-3 module was populated. [https://www.voipac.com/wifi-and-bluetooth-antennas-set Two antennas] plugged in and connected

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 ** '''DisplayPort (M) interface used with LCD monitor connected:''' Full-HD output video stream generated and sent to LCD monitor via 1.5m long DisplayPort cable, with ferrite beads added (Würth Elektronik P/N: 742 711 32). The output signal forced to be continuously generated, contributing to EMC spectrum, monitor was plugged into mains, turned on, and laid flat on the floor to minimise its impact on results. Used LCD monitor: 24" LG LG24BK550Y 1920×1080 px
 ** '''HDMI interface used with LCD monitor connected:''' Full-HD output video stream generated and sent to LCD monitor via 1.5m long HDMI cable, with ferrite beads added (Würth Elektronik P/N: 742 758 15). The output signal forced to be continuously generated, contributing to EMC spectrum, monitor was plugged into mains, turned on, and laid flat on the floor to minimise its impact on results. Used LCD monitor: 24" LG LG24BK550Y 1920×1080 px
-** '''LCD Display:''' [https://www.voipac.com/newhaven-lvds-capacitive-display-set Newhaven LVDS Capacitive Display Set] with 1024x600 resolution. The display was mounted on top of the development kit with metal standoffs, active and displaying continued video stream coming from the camera thus contributing to EMC spectrum. LCD P/N: NHD-10.1-1024600MB-LSXV-CTP
+** '''LCD Display:''' [https://www.voipac.com/newhaven-lvds-capacitive-display-set Newhaven LVDS Capacitive Display Set] with 1024x600 px resolution. The display was mounted on top of the development kit with metal standoffs, active and displaying continued video stream coming from the camera thus contributing to EMC spectrum. LCD P/N: NHD-10.1-1024600MB-LSXV-CTP
 * '''2x USB 3.0:''' SanDisk Ultra Flair 16GB USB 3.2 Gen 1, each connected through a 1m long USB 3.2 Gen 1 extension cable (Molex P/N: 0687890035). Both used during read/write test
 * '''USB-C:''' Kingston DataTraveler 80 32GB USB 3.2 Gen 1, connected through USB-C extension cable (Cable P/N: FCR72003)

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 * '''Ethernet:''' 1m long CAT Ethernet [https://supportportal.juniper.net/s/article/EX-How-to-link-up-Juniper-Ethernet-switching-GbE-copper-port-by-RJ45-loopback-connector?language=en_US loopback cable] connected. Forced to 100Mbps and used for ping test
 * one of these '''video output''' options was used at a time:
-** '''DisplayPort (M) interface used with LCD monitor connected:''' Full-HD output video stream generated and sent to LCD monitor via 1.5m long DisplayPort cable, with ferrite beads added (P/N: Würth Elektronik 742 711 32). The output signal forced to be continuously generated, contributing to EMC spectrum, monitor was plugged into mains, turned on, and laid flat on the floor to minimise its impact on results. Used LCD monitor: 24" LG LG24BK550Y 1920×1080 px
+** '''DisplayPort (M) interface used with LCD monitor connected:''' Full-HD output video stream generated and sent to LCD monitor via 1.5m long DisplayPort cable, with ferrite beads added (Würth Elektronik P/N: 742 711 32). The output signal forced to be continuously generated, contributing to EMC spectrum, monitor was plugged into mains, turned on, and laid flat on the floor to minimise its impact on results. Used LCD monitor: 24" LG LG24BK550Y 1920×1080 px
 ** '''HDMI interface used with LCD monitor connected:''' Full-HD output video stream generated and sent to LCD monitor via 1.5m long HDMI cable, with ferrite beads added (P/N: Würth Elektronik 742 758 15). The output signal forced to be continuously generated, contributing to EMC spectrum, monitor was plugged into mains, turned on, and laid flat on the floor to minimise its impact on results. Used LCD monitor: 24" LG LG24BK550Y 1920×1080 px
 ** '''LCD Display:''' [https://www.voipac.com/newhaven-lvds-capacitive-display-set Newhaven LVDS Capacitive Display Set] with 1024x600 resolution. The display was mounted on top of the development kit with metal standoffs, active and displaying continued video stream coming from the camera thus contributing to EMC spectrum. LCD P/N: NHD-10.1-1024600MB-LSXV-CTP

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 [[Category:iMX8M Industrial Development Kit]]
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 <div style="float:right">__TOC__</div>

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 trap finish_test_now 2
-# play a video stream from HDMI input - testing also HDMI output
+# play video stream
 gst-launch-1.0 -q imxv4l2src ! autovideosink &
-# stressapptest - one thread CPU, one thread memory, sata thread (if possible)
+# stressapptest - CPU threads and RAM memory threads
 if [ "${basic}" -eq "1" ]; then
    stress-ng --cpu 2 --vm 4 &