User`s guide

2 LTI Models
2-58
transfer functions or zero-pole-gain models, as it depends on the choice of state
coordinates used by the realization algorithm. As a result, you cannot enter
nonzero initial states when you supply TF or ZPK models to LTI blocks in a
Simulink diagram.
Note:
• For MIMO systems, the input delays stored in the LTI object must be either
all positive or all zero.
• LTI blo cks in a Simulink d iagram cannot be u sed for F RD models or LT I
arrays.