86.1.3 Analysis of Block Diagrams Example -Consider the single-loop feedback structure shown below X(z) E(z The output e(z of the adder is E(z=X(z+G2 zY(z · But from the figure Y(z=GZE(Z§6.1.3 Analysis of Block Diagrams The output E(z) of the adder is E(z) = X(z)+G2 (z)Y(z) • But from the figure Y(z) = G1 (z)E(z) Example - Consider the single-loop feedback structure shown below