Properties of the roCs of z-Transforms (1) The roc of X(z)consists of a ring in the z-plane centered about the origin(equivalent to a vertical strip in the s-plane) gr Z-plane g 2)The roc does not contain any poles(same as in LTProperties of the ROCs of z-Transforms (1) The ROC of X(z) consists of a ring in the z-plane centered about the origin (equivalent to a vertical strip in the s-plane) (2) The ROC does not contain any poles (same as in LT)