Will a 722K receiver/DVR work as a DVR with Cable broadcasting?

I have a 722K receiver/DVR and will soon be moving to a residence where there is already Cable TV access. My question is can I use this piece of equipment as a DVR? I won’t need to “receiver” aspects of it to work…just the DVR aspects of it. Since it is a “dual mode” receiver would it be able to run 1 or 2 TV’s ? is the other question.
Thanks for any help.