I just updated to Power Profiler 4.2.0 and PPK2 firmware 1.2.0 and now I see the big changes with the exact same DUT and setup compared to the Power Profiler 4.1.2:
* Current measurements at 100Ksps are now 5-10x higher.
* >3x difference between Source Meter and Ampere Meter modes compared to <30% difference before.
Has anyone else seen such changes? I don't believe the new measurements are accurate. Is it possible to downgrade?
I am using the default config values and here is the nRFConnect System Report:
# nRFConnect System Report - 2024-08-06T01-58-17.281Z
- System: Micro-Star International Co., Ltd. MS-7B45
- BIOS: American Megatrends Inc. A.90
- CPU: 1 x Intel Core
i7-8700 3.2 GHz 12 cores (6 physical)
- Memory: 1.1 GB free of 46.9 GB total
- Filesystem: efivarfs (efivarfs) 256 kB 16.7% used
- OS: Ubuntu (22.04.4 LTS) linux x64
- Versions
- kernel: 6.5.0-45-generic
- git: 2.34.1
- node: 20.14.0
- python: 3.10.12
- python3: 3.10.12
- nrfutil-nrfutil-device: 2.3.5
- Connected devices:
- DA702E4DA3EA : /dev/ttyACM0, /dev/ttyACM1
- Current device:
- name: PPK2
- serialNumber: DA702E4DA3EA
- cores: Unknown
- website: https://www.nordicsemi.com/Software-and-tools/Development-Tools/Power-Profiler-Kit-2
