User`s guide

Repeat

5-372

output frame period of 1 (0.25∗4). The first channel should contain the

positive ramp signal 1, 2, ..., 100, and the second channel should contain the

negative ramp signal -1, -2, ..., -100.

Signal = [(1:100)' (-1:-1:-100)']

- Sample time = 0.25

- Samples per frame = 4

•Configure the Repeat block to upsample the two-channel input by increasing

the output frame rate by a factor of 2 relative to the input frame rate. Set an

initial condition matrix of

Repetition count = 2

- Initial condition = [11 -11;12 -12;13 -13;14 -14]

- Frame-based mode = Maintain input frame size

•Configure the Probe blocks by deselecting the Probe width and Probe

complex signal

check boxes (if desired).

This model is multirate because there are at least two distinct sample rates, as

shown by the two Probe blocks. To run this model in Simulink’s multitasking

mode, select

Fixed-step and discrete from the Type controls in the Solver

panel of the

Simulation Parameters dialog box, and select MultiTasking from

the

Mode parameter. Also set the Stop time to 30.

Run the model and look at the output,

yout. The first few samples of each

channel are shown below.

yout =

11 -11

12 -12

13 -13

14 -14

11 11–

12 12–

13 13–

14 14–