How can I repeatedly trigger a waveform using 'Signal From Workspace block' and an external pulse signal?

Question

Raymond 2019-10-22

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https://ww2.mathworks.cn/matlabcentral/answers/486738-how-can-i-repeatedly-trigger-a-waveform-using-signal-from-workspace-block-and-an-external-pulse-si

回答： Ali Asghar Pourostad 2019-12-13

I am using Simulink to trigger output of an arbitray waveform signal to a DAQ card, in response to an external TTL pulse. To attempt this, I am currently using a triggered subsystem containing a 'Signal from workspace' block. However, I can only get the waveform to output once in response to the pulse. 'Cyclic repetition' does not solve my problem, because that simply repeats the waveform immediately when the last iteration finishes. I need to be able to trigger repeatadly at arbitrary time points. Can anyone tell me how to trigger the same waveform repeatedly?

thanks for any advice.