Yes, it is not labeled 'TDR' in the menus. Instead it is appropriately labeled 'Transform', since it is not a true TDR, but simulation of a TDR via Fourier Transform. On the menus: Display -> Transform. Usually the "Low Pass Impulse" is an appropriate selection. There are some videos you can find online that describe its use. Also messages in this group from a long time ago. It requires setting up the frequency scan range appropriately for the corresponding time-length you require, which can be a bit counter-intuitive, and you need to take care to set it appropriately to avoid aliasing, which would give a false answer. But it works very well once you know how to set it up.
Stan KC7XE