1. A computing device-implemented method for checking consistency of user-settable isolated parameters among a first graphical modeling component and a second graphical modeling component in an executable graphical model, said method comprising: receiving a user designation at the model component level that the first graphical modeling component and the second graphical modeling component are related, at least one of the first graphical modeling component and the second graphical modeling component being a block or connection in an executable block diagram, where the first graphical modeling component is an encoder component for encoding a signal and the second graphical modeling component is a decoder component for decoding the signal; checking consistency between a first user-settable isolated parameter of the first graphical modeling component and a second user-settable isolated parameter of the second graphical modeling component based on the designating of the first graphical modeling component and the second graphical modeling component as related; and displaying a notification, or storing a determination, regarding a consistency status of the first user-settable isolated parameter and the second user-settable isolated parameter.