RAk3172, Functional test on RWC5020 LoRaWAN Certification

Ryandiapsl · March 18, 2026, 10:50am

Hello,

I am doing a pre certification test for our end device which is using the RAK3172 as an AT-LoRaWAN modem. And all the tests are passing and it is getting stuck on test 5.8.a which is for Change in TXPower for the module. Although the commands are being received the power seems to not be changing, and have even took the module approx 100meters away from the receiver, but alas nothing changed.

The rak3172, has the latest firmware available to it (RUI_4.2.3_RAK3172-E). and the following are the AT settings:

AT+DR=0
AT+RX1DL=1
AT+RX2DL=2
AT+BAND=4
AT+ADR=1
AT+TXPOWER=0
AT+CFM=0
AT+NJM=1
AT+PNM=1
AT+CLASS=A

Here is an image of the log:

carlrowan · March 19, 2026, 2:44am

Hi @Ryandiapsl ,

Welcome to RAK forum.

Based on the AT commands set, maybe you can try to disable ADR - AT+ADR=0. It can be that the TX power was being overridden by the ADR algorithm.

Ryandiapsl · March 24, 2026, 6:55am

Hello Carl,

I tested the device by manually setting AT+ADR=0, and this change is applied successfully when entered manually. However, after setting the RAK3172 to certification mode using AT+CERTIF=1, I observed that the ADR value is automatically turned on to 1. In this mode, it is no longer possible to manually change ADR back to 0, as the function is blocked.

Could you please provide further guidance? As per Class A certification requirements, the unit is currently not passing the TX power test.

I have tested the following:
Certification by similarity (Passed)
Class A, EU LoRaWAN version 1.0.4 (TXPower Failed)

Thanks

Ryandiapsl · March 20, 2026, 10:26am

Hello Again Carl,
Image attached for reference of test:

I have attempted to put AT+ADR=0, but as soon as i do AT+CERTIF=1, ADR is overridden and set at 1, and of course ADR cannot be manually changed once put into certification mode of the rak3172.
Any other hints about this please? As this is the only test it is not passing when doing a Class A test on the RWC5020b tester.

Thanks, and look forward to hear from you.

carlrowan · April 6, 2026, 4:31am

Hi @Ryandiapsl ,

We did same test on the RUI3 version ~~4.2.3~~ 4.2.0. You can check here the test results and the test steps.

Ryandiapsl · April 6, 2026, 4:44am

Hello Again Carl,

I see that your rak3172 passed the test.
And by any chance what were the settings/modes that the rak3172 was into?

Thanks!

carlrowan · April 6, 2026, 4:59am

Hi @Ryandiapsl ,

Let me check with the team. For now, if you have access to retest easily, you can erase the FW of RAK3172 and reupload a fresh v4.2.0?

Ryandiapsl · April 6, 2026, 5:11am

hi @carlrowan,

I will flash version 4.2.0 and retry the test later on the day. To see if maybe it is an issue with the version?

Thanks for now

carlrowan · April 7, 2026, 4:36am

Hi @Ryandiapsl ,

I got from our team the ini file that you can use.

EDT_EU868_V104_ClassA_8CH.zip (3.9 KB)

Ryandiapsl · April 9, 2026, 7:41am

Hi again Carl,

I have got around to testing with firmware version 4.2.0, on a rak3172-E.

Unfortunately the same issue is still occurring with failing test 5.8.a (TX Power)

For the .ini you sent to me unfortunately, i do not think the RWC5020B software supports import of software file and infact when i put it in the same file, just the report has come up not the configs.

Below find a picture of my settings:

Another thing to keep in mind maybe for these tests is i am doing the following before starting a session on the RWC5020B.

AT+FACTORY
ATZ
AT+BAND=4
AT+PNM=1
AT+NJM=1
AT+ADR=1
AT+DR=0
AT+TXP=0
AT+CERTIF=1

After these commands the tests start and only on the TXPower is failing.

Firmware version: RUI_4.2.0_RAK3172-E
Bootloader version: RUI_BOOT_0.8_STM32WLE5CC

carlrowan · April 10, 2026, 7:40am

Hi @Ryandiapsl ,

My teammate provided me the settings. Maybe something you can try.