(Aside: I’m loving my new JS220 and all the detailed insights to low power circuit design it brings. When it works. )
I’m using my JS220 to measure power and to monitor a few GPIO pins. It worked fine in Oscilloscope mode until this morning. But now, clicking on the “streaming” button has no effect other than the button changing from “play” to “pause” – no streaming data appears. I haven’t changed the wiring or anything external things that I know of that would cause it to stop working.
Multimeter mode works just fine – all the numbers look about right. In Oscilloscope mode, I DO see the GPIO indicators in the Device Control tab flickering, but nothing is drawn on the main screen.
One thing I wonder about is the fuses: When I click on the Device Control icon, Fuse 1 and Fuse 2 are grayed out. The wording is a bit ambiguous, but I think that’s the “normal” state.
Ultimately, I’m 80% sure this is just a user error (me). Am I missing something obvious? Or are there other things I should do to diagnose the issue?
update
How did I forget forum etiquette? Here’s the environment in question:
Version Information:
Hi @rdpoor - Welcome to the Joulescope forum, and congrats on your new JS220! Thanks for selecting a Joulescopes, and I hope it helps you with many future low power circuit designs!
The easiest way to confirm the instrument is working is to inspect the LEDs. Both the Controller Status LED and the Sensor Status LED should be green.
Even when a fuse engages, the JS220 still provides data. Both the Multimeter widget and the Waveform widget will still update. However, the current will be very, very small.
My first guess is that you have inadvertiantly disabled all the signals being displayed. You need to have the desired signals enabled in both the Device Control widget and on the Waveform widget, like this:
You can fix most configuratio problems by reverting to the default config, as long as you don’t care too much about yoru UI configuration. You can select File → Clear config and exit. Then restart the UI.
If that still does not work, select Help → Report Issue, and submit a new issue. Please include this forum post URL in the description so we can match up the issue report.
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