To help you visualize Multirate Dataflow, the editor provides the ability to display the sample counts of each node terminal on a Multirate diagram.
The sample count for each input represents the number of data samples that input requires before the node can execute. The sample count for each output represents the number of data samples that the node produces. You can configure the sample counts for nodes that do not always produce or consume a static number of data samples.
As the previous image illustrates, displaying sample counts is useful for visualizing the flow of data streams and making sure each node operates on the correct number of data samples.