Bias tee option on LimeSDR XTRX

Projects LimeSDR
1

I have a LimeSDR XTRX v1.2 board and would like to enable the “bias tee” option shown in Figure 6 on the LimeSDR XTRX Boards website: LimeSDR XTRX v1.2 Board — LimeSDR XTRX Boards 23.01 documentation

However, I could not find any further details on the website. Could anyone please explain how to enable the “bias tee” option, both in hardware and in software?

2

Tagging @zack.

3

Hi @osqzss

Bias tee is not fully populated by default. You have to solder MN53 (for RXA channel) and MN54 (for RXB channel) inductors to activate it. Check schematic page 6 for more information.

4

Thank you for the clear explanation. I understand that the bias tee is not populated by default. I will check the schematic as well.