A guide to solve USB serial driver problems on TX2

Hi,
I am trying to connect a GPS with my TX2 through a HL340 USB serial adapter. THe GPS came with a DB9 connector and I used a DB9 to USB connector to connect it with TX2. When connected, I was getting faulty output on the serial monitor. Please refer to the link below which directs to the issue.

https://forums.developer.nvidia.com/t/faulty-gps-data-on-serial-monitor/173902

I followed the procedure mentioned in this post and still having the same issue. Since I am a beginner, is this issue related to the serial port or something else?