COM of PPK cannot be recognized

[celia16099]

I just received the PPK and use it for the first time.

I am trying use the PPK to monitor the current of an external board.

SW2 is set to 'external' and SW4 is set to 'Reg.'.

Then I connect the PPK to Windows PC through USB port J1. (without connecting the external board DUT)

The LED1 (green) of PPK is ON but the COM cannot be recognized. 

In nRF Connect v2.3.2 - Power Profiler application there is no any option available when I click Select serial port.

In device manager, when I plug the device there is no any newly recognized serial port.

I tried all the USB port of the PC and also a few USB cables but it dose not work.

Is there any other hardware setting that I need to do? Please advise.

In case this is a hardware failure, how can i get it repaired?

I purchase it through Digikey.

[Mttrinh]

Hi,

I suggest you to go through these two documents, this and this, from the infocenter. It will help you make sure that everything is set up correctly.

[Mttrinh]

If you like to use the PPK as a standalone, you will need an external SEGGER J-Link. Do you have a J-Link 10-pin needle adapter?

[celia16099]

Now I get a SEGGER J-Link Lite with 10-pin connector.

I connected the SEGGER J-Link to the PPK board P21 and switch the COM switch SW3 to 'EXT'.

Both of the boards are connected to PC through USB cable.

The USB of PPK is power supply only no any device is recognized.

The SEGGER J-Link is recognized as USB device 'J-Link driver'.

But in the PPK application, no any option is available for the 'Select Serial Port'.

What is the possible cause of this?