PicoScope 7 Software
Available on Windows, Mac and Linux
That's interesting, though we're using dedicated PCs for this that aren't assigned to any other task, they're connected to a dedicated engineering network with no internet access, so don't even have virus scanners, etc to interfere with things. Basically the only things we run on these particular PCs are PicoLog, and Windows explorer when we take backups of the logged data (and after that, PicoLog is checked for correct operation before closing the RDP session). It sounds like it may be worth me checking the windows event log to see what might have happened around the same time as the channel swapping.MOME49 wrote: ↑Thu Dec 23, 2021 8:00 pmAfter noumerious tests I found the root cause of the channel mix-up:
- The problem is not related to the Picolog version (in use: 6.1.17 and 6.1.18), nor is it related to exporting csv or pdf files, nor to RAM size or similar. PicoLog runs fine.
- There is definitely an interference/incompatibility with the Microsoft EDGE browser. The channel swapping happens every time MS Edge IS STARTED and shifts all channels. See picture from attached file "view_42_run_6.1.18.pdf".
- During the logging test run I started MS Edge which resulted the first channel swapping at time 14s. Then I closed MS Edge and launched it again, with a second channel swapping at time 34s. And repeated the procedure a third and fourth time, all within the same test run. Each time the channel swapping happened again shifting the channels to a new set.
- Analysing the data in the .csv file revealed that all channels are swapped and by the same shift length.
- Calculation within a channel remains at this channel, calculations are not swapped, but applied to a wrong input.
- If channel swapping happens due to MS Edge and you close the PicoLog window it is not properly shut down. Restarting of PicoLog results in a reduced sized window not allowing to close the application. Thus PicoLog must be shut down by the task manager kill action.Then it restarts properly.
- The swapping problem is related to the use of MS Edge. A simple workaround is to use Firefox browser and Foxit pdf reader instead of MS Edge during Picolog logging. Since I haven't observed any channel swapping.
This information was passed to Picotech but unfortunately not published or worked up yet. Therefor I submit it directly here in this blog. Pls report your experiences with the workaround (and make a short test with PicoLog and MS Edge to see the effect).
Best regards
Mome49