Stuck creating a 1KHz Carrier wave in Simulink

First off sorry if this is in the wrong place

I need to generate a 1KHz triangular carrier wave that will vary between 1 and -1. I know I need to use the repeating sequence block in simulink, however no matter what values I enter into the block parameters my output doesnt seem right. I should be generating a PWM signal at intervals of 0.001s but my output is only starting at 8s with a second pulse at 9s.

I must be missing something obvious!

Answer 1

[Ryan G]

Try this in the repeating sequence:

[0 1/2000 1/1000]
[-1 1 -1]

Answer 2

[adam]

Thanks, that seems to have things working now, at least my output looks the same as the reference one! Now to create a subsystem for simulating a load.