ppk2 ampere meter measure error.not correct
amigomcu opened this issue · comments
hi nordic,
when ppk2 entry Ampere meter.
the measure current not correct.(it seem the scale and offset error ,but can be control,)
(test circuit only vdd(3.3 extern power)->resistor5.1k->ppk2(in)-->ppk2(out)-->gnd(ppk2 gnd)
it should be 0.6mA,but the ppk2 only 60uA.? and other case it get error value(not same scale )
when ppk2 entry soure meter.it be work
it is right value.
(it test use nrf52840 dk ,blinkly example)
https://i.imgur.com/pMqRzEY.png
measure example(error):
https://i.imgur.com/o41SGHp.png
app version:
https://i.imgur.com/TlxZCIo.png
ppk2 F.W version:
15:37:32.160 Validating firmware for device with s/n D55B03750145
15:37:32.177 Opening device with s/n D55B03750145
os:
win10 x64 and OS 10.16
2020-12-30T02:18:09.168Z INFO Deselecting device
2020-12-30T02:18:27.807Z INFO Validating firmware for device with s/n D55B03750145
2020-12-30T02:18:27.814Z INFO Opening device with s/n D55B03750145
2020-12-30T02:18:28.606Z INFO PPK started
2020-12-30T02:18:28.624Z INFO PPK opened
2020-12-30T02:18:36.925Z INFO DUT ON
2020-12-30T02:18:40.149Z INFO Sampling started
2020-12-30T02:18:51.021Z INFO Sampling stopped
2020-12-30T02:18:59.541Z INFO DUT OFF
2020-12-30T02:19:54.636Z INFO Deselecting device
2020-12-30T02:19:54.698Z INFO PPK closed
2020-12-30T02:19:58.355Z INFO Validating firmware for device with s/n D55B03750145
2020-12-30T02:19:58.362Z INFO Opening device with s/n D55B03750145
2020-12-30T02:19:58.729Z INFO PPK started
2020-12-30T02:19:58.748Z INFO PPK opened
2020-12-30T02:20:06.226Z INFO DUT ON
2020-12-30T02:20:07.538Z INFO Sampling started
2020-12-30T02:20:14.812Z INFO Sampling stopped
2020-12-30T02:20:15.640Z INFO DUT OFF
I see that this is solved here https://devzone.nordicsemi.com/f/nordic-q-a/69981/ppk2-ampere-meter-measure-error-not-correct. Thank you for your thorough explanations!