Hi everyone,
This is my first post here — nice to meet you all.
I’m testing TWR (Two-Way Ranging) using one QM33120WEVB and one QM33110WEVB, each connected to an STM32L433-Nucleo64 board. I configured the boards to use channel 5 and channel 9 respectively for communication.
The purpose of this test is to eventually use two UWB modules placed close to each other while operating on different channels (5 and 9) to avoid interference.
Since the devices are on different channels, I expected no ranging to occur at all. However, at close range, distance measurements are unexpectedly succeeding.
When I move the devices further apart, the ranging stops — as originally expected.
Is this behavior normal? Could there be cross-channel leakage or some other explanation for this?
For reference, I’m using the following example source codes from DW3_QM33_SDK_1.0.2:
- Initiator:
ex_05c_ds_twr_init_sts_sdc - Responder:
ex_05d_ds_twr_resp_sts_sdc
Any advice or insights would be greatly appreciated.
Thanks in advance!