https://devzone.nordicsemi.com/f/nordic-q-a/70143/ppk-2-not-passing-through-external-power-in-amp-modeHello, We recently received the new Power Profiler kit II, and are having some trouble with the &#39;Ampere Meter&#39; mode. With an external source connected and DUT power enabled on the desktop application, the output voltage remains at nearly 0; on my multimeteren-USTelligent Community 13Tue, 05 Jan 2021 21:50:18 GMThttps://devzone.nordicsemi.com/thread/287592?ContentTypeID=1Tue, 05 Jan 2021 21:50:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8f991791-103c-4b87-93d4-d6f6b4b28646bvyates<p>I reseated the wiring on one device and it appears to be working now. I am using the header breakout plugs included with the kit, but perhaps the pins just weren&#39;t making contact.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/287590?ContentTypeID=1Tue, 05 Jan 2021 21:35:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a7cc3a59-7297-4aef-81c7-3c004b134526bvyates<p>Thanks for the response. Yes, it is not immediately obvious that you would have to flip the slider to enable power from an external source, but I have done that. When I am in AMP mode with the external supply connected, and the &#39;Enable Power Output&#39; slider off, I get 0V measured on Vout (as expected), but when I enabled the slider, I get 0.02v on Vout, not the expected 3V that is on Vin from my supply.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/287586?ContentTypeID=1Tue, 05 Jan 2021 21:09:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bcd7f01f-5a84-46eb-9a52-da2bc58fc985hmolesworth<p>You have to turn it on, not so clear from the icon (I&#39;m not being facetious). &quot;Enable Power Output&quot; slider controls both internal and external power to VOUT via one of the two FETs. Edit: If &quot;DUT power enabled&quot; means that slider, then just ignore this post ..</p> <p><pre class="ui-code" data-mode="c_cpp">// &lt;- Supply to DUT From VOUT External Battery To VIN // +------------------------------+ +-------------------------+ // | | | | // | +---------+ | | +-----------+ | // | | GND | | VOUT VIN | | GND | | // +---------O---------+ | +----O-----O------------------------O-----O----+ | | Battery // | Vdd | | | | | | | | | | + 3 volts // | | | | | | AMPERE \ | | | | +-O-+ // | | | | | | \ | | | | | | // | | | | | #----#-----------O O----# | | | | | // | Device Under Test | | | | | | | | | | | | // | DUT | | | | 120k| | |120k | | | | | // | | | | | +++ | \ SOURCE +++ | | | | | // | | | | | | | | \ | | | | | +-O-+ // | | | | | | | +-O O-- PPK LDO | | | | | | Gnd // | | | | | | | | | | | +-------+ // | | | | | +++ +++ | | // | | | | | | | | | // | | | | | #-- VDUT VIN --# | | // | | | | | | Sense Sense | | | // | | | | | +++ +++ | | // | | | | | | | | | | | // | | | | | | | | | | | // | | | | | | | | | | | // | | | | | +++ +++ | | // | | | | | | 30k 30k | | | // | | | | +--#--+ +--#--+ | // | | | | | | | // | | | | ===== ===== | // | | | | === === | // | Gnd | | | = = | // +---------O---------+ | +----------------------------------------------+ // | | PPK-II // +--------------+</pre></p><div style="clear:both;"></div>