What do "D1" and "inf" mean in the attached fig?

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Samir Soliman
Samir Soliman 2017-8-28
评论： Samir Soliman 2017-8-29
I am trying to test a QPSK transceiver. What do "D1" and "inf" mean in the QPSK transmitter and receiver in the figures on the web page https://www.mathworks.com/help/comm/examples/qpsk-transmitter-and-receiver-1.html

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Sebastian Castro
Sebastian Castro 2017-8-28
These are labels given to the sample times in the model, when you enable sample time display.
  • D1 refers to the first (fastest) discrete sample time in the model.
  • Inf refers to a constant sample time; in other words, the signal does not change unless you modify its constant value during runtime.
Refer to https://www.mathworks.com/help/simulink/ug/types-of-sample-time.html for more information.
- Sebastian

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