iMX6 Rex Environmental chamber testing - Revision history

Voipac at 07:58, 26 October 2021

2021-10-26T07:58:40Z

Voipac at 07:49, 26 October 2021

2021-10-26T07:49:30Z

Voipac at 18:43, 24 October 2021

2021-10-24T18:43:11Z

Voipac at 16:11, 31 August 2021

2021-08-31T16:11:43Z

Voipac at 21:55, 3 June 2021

2021-06-03T21:55:30Z

Voipac at 09:15, 25 April 2021

2021-04-25T09:15:37Z

Voipac at 06:18, 23 April 2021

2021-04-23T06:18:41Z

Voipac at 06:45, 26 March 2021

2021-03-26T06:45:30Z

Voipac at 06:45, 26 March 2021

2021-03-26T06:45:03Z

Voipac at 06:27, 26 March 2021

2021-03-26T06:27:49Z

@@ Line 24: / Line 24: @@
 == Test description ==
-The main purpose of this test is to check memory stability of iMX6 Rex Module. During the test these threads will be running:
+The main purpose of this test is to check memory stability of iMX6 Rex Module. During the test these threads were running:
 * 4 threads of extensive memory stress test
 * 4 threads of CPU stress test

@@ Line 21: / Line 21: @@
 The setup in environmental chamber:<br />
-[[image:iMX6_Rex_Development_kit-Environmental_chamber_testing_boards.jpg|800px]]
+[[image:iMX6_Rex_Development_Kit-Environmental_chamber_testing_boards.jpg|800px]]
 == Test description ==
@@ Line 37: / Line 37: @@
 == Testing Results ==
 The picture below shows the temperature profile during the whole testing process:<br />
-[[image:iMX6_Rex_Development_kit-Env_chamber-Temperature_profile.png|680px]]
+[[image:iMX6_Rex_Development_Kit-Env_chamber-Temperature_profile.png|680px]]
 === Switch ON/OFF test – PASS ===
 Test description: Boards were switched OFF, left OFF for 10 minutes and then switched ON. These tests were done several times for temperatures between -30°C to -35°C and for a temperature +70°C. All the boards booted up successfully.<br />
 {|
-|[[image:iMX6_Rex_Development_kit-Env_chamber_testing_-25°C.jpg|396px]]
+|[[image:iMX6_Rex_Development_Kit-Env_chamber_testing_-25°C.jpg|396px]]
-|[[image:iMX6_Rex_Development_kit-Env_chamber_testing_+70°C.jpg|396px]]
+|[[image:iMX6_Rex_Development_Kit-Env_chamber_testing_+70°C.jpg|396px]]
 |}
 === Running the boards at -25°C – PASS ===
 Test description: Ambient temperature was set to -25°C and the CPU and Memory stress tests were running.
-[[image:iMX6_Rex_Development_kit-Env_chamber-Logs_-25°C.png|800px]]
+[[image:iMX6_Rex_Development_Kit-Env_chamber-Logs_-25°C.png|800px]]
 === Running the boards at +70°C – PASS ===
 Test description: Ambient temperature was set to +70°C and the CPU and Memory stress tests were running.
-[[image:iMX6_Rex_Development_kit-Env_chamber-Logs_+70°C.png|800px]]
+[[image:iMX6_Rex_Development_Kit-Env_chamber-Logs_+70°C.png|800px]]
 === Fast change of the temperature (from -25°C to +70°C) – PASS ===
@@ Line 88: / Line 88: @@
 === Setup the SSH connections ===
 During the testing a simple local Ethernet network utilising a LAN switch and a control laptop was created. Two SSH sessions per board were opened (8 sessions in total). The first session was used for CPU and memory stress test. In the window below the current CPU temperature was printed out. The other three boards used the same format:
-[[image:iMX6_Rex_Development_kit-Env_chamber-Logs_setup.png|800px]]
+[[image:iMX6_Rex_Development_Kit-Env_chamber-Logs_setup.png|800px]]
 ===  Set up the date ===

@@ Line 1: / Line 1: @@
-[[Category:iMX6 Rex Development kit]]
+[[Category:iMX6 Rex Development Kit]]
 <!-- -->
 <div style="float:right">__TOC__</div>
-On this page environmental stress testing results of iMX6 Rex Development kit are displayed. Detailed instructions how to setup iMX6 Rex Development kit are also shown.
+On this page environmental stress testing results of iMX6 Rex Development Kit are displayed. Detailed instructions how to setup iMX6 Rex Development Kit are also shown.
 == Hardware configuration ==
 Following hardware configurations were used for the testing:
 <br />
-* 3x iMX6 Rex Development kit in [[iMX6 Rex Pro|Pro configuration]]
+* 3x iMX6 Rex Development Kit in [[iMX6 Rex Pro|Pro configuration]]
 ** i.MX6 Quad 1.0 GHz CPU - extended temperature range (-20°C to +105°C)
 ** 2GB DDR3 Memory (4x 4Gb DDR3 Memory chips) - commercial temperature range (0°C to +95°C)
 ** 1GBps Ethernet PHY Tranciever KSZ9021RN - commercial temperature range (0°C to +70°C)
 <br />
-* 1x iMX6 Rex Development kit in modified Pro configuration
+* 1x iMX6 Rex Development Kit in modified Pro configuration
 ** i.MX6 Quad 1.0 GHz CPU - extended temperature range (-20°C to +105°C)
 ** 1GB DDR3 Memory (4x 2Gb DDR3 Memory chips) - commercial temperature range (0°C to +95°C)
@@ Line 59: / Line 59: @@
 == Preparing the test ==
 === SD card setup ===
-[http://downloads.voipac.com/files/iMX6_Rex_Development_kit/module/software/linux/binaries/old/imx6rex-uImage-default-02-MAY-2014 Linux 4.1] kernel was used for this test. Modified Xubuntu filesystem can be accessed from [http://downloads.voipac.com/files/iMX6_Rex_Development_kit/module/software/filesystem/filesystem_download.txt here]. To create a new SD card, [[iMX6 Rex Pro Creating Bootable microSD Card|these instructions]] can be followed.
+[http://downloads.voipac.com/files/iMX6_Rex_Development_Kit/module/software/linux/binaries/old/imx6rex-uImage-default-02-MAY-2014 Linux 4.1] kernel was used for this test. Modified Xubuntu filesystem can be accessed from [http://downloads.voipac.com/files/iMX6_Rex_Development_Kit/module/software/filesystem/filesystem_download.txt here]. To create a new SD card, [[iMX6 Rex Pro Creating Bootable microSD Card|these instructions]] can be followed.
 === Create the log files ===

@@ Line 37: / Line 37: @@
 == Testing Results ==
 The picture below shows the temperature profile during the whole testing process:<br />
-[[image:iMX6_Rex_Development_kit-Env_chamber-Temperature_profile.jpg|800px]]
+[[image:iMX6_Rex_Development_kit-Env_chamber-Temperature_profile.png|680px]]
 === Switch ON/OFF test – PASS ===
@@ Line 48: / Line 48: @@
 === Running the boards at -25°C – PASS ===
 Test description: Ambient temperature was set to -25°C and the CPU and Memory stress tests were running.
-[[image:iMX6_Rex_Development_kit-Env_chamber-Logs_-25°C.jpg|800px]]
+[[image:iMX6_Rex_Development_kit-Env_chamber-Logs_-25°C.png|800px]]
 === Running the boards at +70°C – PASS ===
 Test description: Ambient temperature was set to +70°C and the CPU and Memory stress tests were running.
-[[image:iMX6_Rex_Development_kit-Env_chamber-Logs_+70°C.jpg|800px]]
+[[image:iMX6_Rex_Development_kit-Env_chamber-Logs_+70°C.png|800px]]
 === Fast change of the temperature (from -25°C to +70°C) – PASS ===
@@ Line 88: / Line 88: @@
 === Setup the SSH connections ===
 During the testing a simple local Ethernet network utilising a LAN switch and a control laptop was created. Two SSH sessions per board were opened (8 sessions in total). The first session was used for CPU and memory stress test. In the window below the current CPU temperature was printed out. The other three boards used the same format:
-[[image:iMX6_Rex_Development_kit-Env_chamber-Logs_setup.jpg|800px]]
+[[image:iMX6_Rex_Development_kit-Env_chamber-Logs_setup.png|800px]]
 ===  Set up the date ===

@@ Line 39: / Line 39: @@
 [[image:iMX6_Rex_Development_kit-Env_chamber-Temperature_profile.jpg|800px]]
-=== Switch ON/OFF test - PASS ===
+=== Switch ON/OFF test – PASS ===
 Test description: Boards were switched OFF, left OFF for 10 minutes and then switched ON. These tests were done several times for temperatures between -30°C to -35°C and for a temperature +70°C. All the boards booted up successfully.<br />
 {|
@@ Line 46: / Line 46: @@
 |}
-=== Running the boards at -25°C - PASS ===
+=== Running the boards at -25°C – PASS ===
 Test description: Ambient temperature was set to -25°C and the CPU and Memory stress tests were running.
 [[image:iMX6_Rex_Development_kit-Env_chamber-Logs_-25°C.jpg|800px]]
-=== Running the boards at +70°C - PASS ===
+=== Running the boards at +70°C – PASS ===
 Test description: Ambient temperature was set to +70°C and the CPU and Memory stress tests were running.
 [[image:iMX6_Rex_Development_kit-Env_chamber-Logs_+70°C.jpg|800px]]
-=== Fast change of the temperature (from -25°C to +70°C) - PASS ===
+=== Fast change of the temperature (from -25°C to +70°C) – PASS ===
 Test description: Ambient temperature was rapidly changed from -25°C to +70°C. The CPU and Memory stress tests were running.

@@ Line 75: / Line 75: @@
 </syntaxhighlight>
-To setup a cron tab, the file containing all cron jobs needs to be altered. Before running  the crontab for the first time, selecting a text editor is required:
+To setup a cron tab, the file containing all cron jobs needs to be altered. Before running the crontab for the first time, selecting a text editor is required:
 <syntaxhighlight lang="bash">
 sudo crontab -e

@@ Line 42: / Line 42: @@
 Test description: Boards were switched OFF, left OFF for 10 minutes and then switched ON. These tests were done several times for temperatures between -30°C to -35°C and for a temperature +70°C. All the boards booted up successfully.<br />
 {|
-|[[image:iMX6_Rex_Development_kit-Env_chamber_testing_-25°C.jpg|395px]]
+|[[image:iMX6_Rex_Development_kit-Env_chamber_testing_-25°C.jpg|397px]]
-|[[image:iMX6_Rex_Development_kit-Env_chamber_testing_+70°C.jpg|395px]]
+|[[image:iMX6_Rex_Development_kit-Env_chamber_testing_+70°C.jpg|397px]]
 |}

@@ Line 42: / Line 42: @@
 Test description: Boards were switched OFF, left OFF for 10 minutes and then switched ON. These tests were done several times for temperatures between -30°C to -35°C and for a temperature +70°C. All the boards booted up successfully.<br />
 {|
-|[[image:iMX6_Rex_Development_kit-Env_chamber_testing_-25°C.jpg|400px]]
+|[[image:iMX6_Rex_Development_kit-Env_chamber_testing_-25°C.jpg|395px]]
-|[[image:iMX6_Rex_Development_kit-Env_chamber_testing_+70°C.jpg|400px]]
+|[[image:iMX6_Rex_Development_kit-Env_chamber_testing_+70°C.jpg|395px]]
 |}
@@ Line 84: / Line 84: @@
 * * * * * { echo -n $(date +\%Y/\%m/\%d-\%T); echo -n "("; echo -n $(date +\%Z); echo -n ") "; cat /sys/devices/virtual/thermal/thermal_zone0/temp; } >> /home/ubuntu/testing-env-chamber/cpu-temp.log
 </syntaxhighlight>
-'''''Note:''''' The percent sign '%' has a special purpose in the cron file. As this sign is needed to write the date formats, the backslash is required to place before the percent sign: '\%'.
+'''''Note:''''' The percent sign '%' has a special purpose in the cron file. As this sign is needed to write the date formats, the backslash is required to be placed before the percent sign: '\%'.
 === Setup the SSH connections ===
@@ Line 96: / Line 96: @@
 </syntaxhighlight>
-An actual time is changed afterwards. The sequence of digits in the following order was used: month day hour minute year. The commands below set this time and date: 04-July-2014 08:26
+The actual time is changed afterwards. Sequence of digits in the following order was used: month day hour minute year. The command below sets this time and date: 04-July-2014 08:26
 <syntaxhighlight lang="bash">
 date 070408262014
@@ Line 102: / Line 102: @@
 === Setup the CPU temperature printout ===
-Before the start the CPU and memory stress test, the old logs were backed up:
+Before the CPU and memory stress tests start, the old logs were backed up:
 <syntaxhighlight lang="bash">
 cd /home/ubuntu/testing-env-chamber
@@ Line 111: / Line 111: @@
 </syntaxhighlight>
-To read the temperature tail command is used. It displays the last part of files (the cron job is writing to this log file):
+Tail command is used to read the temperature. It displays the last part of files (the cron job is writing to this log file):
 <syntaxhighlight lang="bash">
 tail -F cpu-temp.log