Hi Jared,
I apologize if you already knew this, but you didn’t mention it in your message. The frequency up/down arrows adjust the center frequency by the “step” amount, which you can enter a few boxes down.
If you continue to have connection issues, email Justin at justin at signalhound dot com and point him to this thread as well. The SA44B disconnecting in this way is rare, if general troubleshooting does not solve the problem we might suggest an RMA (for us to reproduce the issue in our shop), or ship you a new cable. If you are able to reproduce the issue on another PC, we would be interested to know.
Regards,
A.J.