When the PPK II board is used to measure the current of the smoke alarm, the test results are very different from those of the power analyzer.https://devzone.nordicsemi.com/f/nordic-q-a/113597/when-the-ppk-ii-board-is-used-to-measure-the-current-of-the-smoke-alarm-the-test-results-are-very-different-from-those-of-the-power-analyzerWhen I tried to use PPK II to measure the alarm current of a smoke alarm product, I found that its test results were very different from those of the power analyzer. I didn&#39;t know where the problem was. Is it because in this scenario where the instantaneousen-USTelligent Community 13Wed, 14 Aug 2024 12:04:01 GMTRE: When the PPK II board is used to measure the current of the smoke alarm, the test results are very different from those of the power analyzer.https://devzone.nordicsemi.com/thread/498267?ContentTypeID=1Wed, 14 Aug 2024 12:04:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5f7c5a0d-52c6-4b78-a097-b301577f561dPriyanka<p>Happy to help <span class="emoticon" data-url="https://devzone.nordicsemi.com/cfs-file/__key/system/emoji/1f642.svg" title="Slight smile">&#x1f642;</span></p> <p>-Priyanka</p><div style="clear:both;"></div>RE: When the PPK II board is used to measure the current of the smoke alarm, the test results are very different from those of the power analyzer.https://devzone.nordicsemi.com/thread/498255?ContentTypeID=1Wed, 14 Aug 2024 11:35:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c39bcbee-85ec-461b-b056-80b707496c29Toboshu<p>You are right, when I tried to retest it by connecting a large capacitor, the average value became normal, although&nbsp;even that was not possible to test the&nbsp;actual maximum current value. Thanks for your support.</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1723634728697v1.png" alt=" " /></p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1723635230995v2.png" alt=" " /></p><div style="clear:both;"></div>RE: When the PPK II board is used to measure the current of the smoke alarm, the test results are very different from those of the power analyzer.https://devzone.nordicsemi.com/thread/498019?ContentTypeID=1Tue, 13 Aug 2024 12:02:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b021a914-5e4d-417d-adac-fa08eddb119cPriyanka<p>Hi,</p> <p>This must probably be because the PPKII cannot keep up with the fast current spikes. Please try placing a large capacitor at the PPKII output and see if this resolves the problem.</p> <p>-Priyanka</p><div style="clear:both;"></div>RE: When the PPK II board is used to measure the current of the smoke alarm, the test results are very different from those of the power analyzer.https://devzone.nordicsemi.com/thread/497712?ContentTypeID=1Mon, 12 Aug 2024 02:46:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:08377988-f38f-41f0-a320-45a83252282cToboshu<p>Hi,</p> <p>The measurement is also inaccurate.</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1723430762718v1.png" alt=" " /></p><div style="clear:both;"></div>RE: When the PPK II board is used to measure the current of the smoke alarm, the test results are very different from those of the power analyzer.https://devzone.nordicsemi.com/thread/497570?ContentTypeID=1Fri, 09 Aug 2024 08:18:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ece98666-06d8-4910-aa52-1bed8c082941Priyanka<p>Hi,</p> <p>Could you try connecting and measuring in the sourcemeter mode?</p> <p>-Priyanka</p><div style="clear:both;"></div>RE: When the PPK II board is used to measure the current of the smoke alarm, the test results are very different from those of the power analyzer.https://devzone.nordicsemi.com/thread/497541?ContentTypeID=1Fri, 09 Aug 2024 01:20:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5df80e7a-31de-4b32-bed4-a04e287f9a3dToboshu<p>I have updated the FW of&nbsp;pca63100_ppk2_1.2.0_97a781b.hex and the issue is still exist.&nbsp;Please review the whole process.</p> <p>1. Program the newest FW</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1723166210314v1.png" alt=" " /></p> <p>2.After connecting to PPK II via Power profile, I found that it needed to be re-program back to old version, but I chose No.</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1723166241941v2.png" alt=" " /></p> <p>3.When measuring alarm current, the actual result is still too low</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1723166353452v3.png" alt=" " /></p> <p>4.The same method was used with another PPK II board, and the test results were also abnormal.</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1723166426913v4.png" alt=" " /></p><div style="clear:both;"></div>RE: When the PPK II board is used to measure the current of the smoke alarm, the test results are very different from those of the power analyzer.https://devzone.nordicsemi.com/thread/496922?ContentTypeID=1Mon, 05 Aug 2024 08:56:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:be84d2d9-ae34-4ab6-afd9-cad36ef72e91Priyanka<p>Hi,</p> <p>Yes, it&#39;s recommended to update to the latest firmware. Please update and do let me know if your issue persists. Also, please try in the sourcemeter mode.</p> <p>Regards,</p> <p>Priyanka</p><div style="clear:both;"></div>