IBD: Figure 47: Internal structure of test bed from signal source to sink

The slide shows trails versions of Internal Block Diagram (IBD) Figure 47: Internal structure of test bed from signal source to sink (with different Port label display modes):

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SysPhS-1.1: 'Part properties, typed by blocks ... represent the components of the system. They are connected through ports .. which represent signal outputs and inputs ... Signals pass through ports in the direction shown by the arrows. Item flows on connectors indicate that the signals are real numbers.'

SysPhS-1.1: 'Figure 47 connects a signal source to a signal processor, which it connects to a signal sink that displays the output.'

The context-specific value 3.0 for amp is shown in the initialValues compartment on inputSignal:SignalSource.

The lower diagram is otherwise the same but employs this display option:

TIP: MagicDraw/Cameo: Consider showing the Port name and type label inside the Port symbol! CAVEAT: This loses the direction indicators on Ports typed by Blocks with flow properties (but is fine if ItemFlows show the direction, or for "contract ports").

In the case where the direction is clearly indicated by a SysML ItemFlow, the loss of flow direction indicators on the Port symbols matters less, so this display option suits itself well to many signal processing diagrams.

It's time now to see inside the SignalProcessor block, but we'll once again look at the BDD before the IBD (so in the reverse order from the spec).

Up next

BDD: Figure 50: Signal processing system blocks, ports, & component properties

Notes

[CAPABILITY, FEATURE, STYLE, TIP] TIP: MagicDraw/Cameo: Consider showing the Port name and type label inside the Port symbol! CAVEAT: This loses the direction indicators on Ports typed by Blocks with flow properties (but is fine if ItemFlows show the direction, or for "contract ports").

Snippets (quotes/extracts)

[SysPhS-1.1] Figure 47 and Figure 48 show the internal structure of blocks TestBed and SignalProcessor, respectively

[SysPhS-1.1] Part properties, typed by blocks ... represent the components of the system. They are connected through ports .. which represent signal outputs and inputs ...

[SysPhS-1.1] Signals pass through ports in the direction shown by the arrows. Item flows on connectors indicate that the signals are real numbers.

[SysPhS-1.1] Figure 47 connects a signal source to a signal processor, which it connects to a signal sink that displays the output.

[SysPhS-1.1] SysML initial values specify property values for components used in internal block diagrams.

[SysPhS-1.1] Figure 47 shows an initial value for source amplitude amp, while Figure 48 shows initial values for amplifier signal gain g and filtering properties xi and alpha ...