You can use the spectrum analyzer mode of the SDA 5000. Use no test point, or probe compensation, and you will be able to see the return at -40dbmv. Set the center frequency at 25 mhz, this will allow you to see between 5, and 40 mhz. I found this to be a good "quicky" test on each leg of the node before sweeping.
This is CABL.com posting #123444. Tiny Link: cabl.co/mGhc