Update of the Clock Radio Capella Model (start)

During my SysML trainings, I have been using for several years now a simple example of a system: the Clock Radio. This is even the main example of my SysML introductory book in French, published by Eyrolles in 2013.

As part of the Clarity project, it seemed natural to do the same exercise with Capella using the Arcadia approach and concepts. I published in 2015 a first version of the model (with Capella 1.0) where I concentrated on the System Analysis level, trying to illustrate the main types of diagrams, but also ensuring the traceability with the operational need expressed in Operational Analysis. Then a second version of the model, with the Logical Architecture level. And finally a third version of the model with the Physical Architecture level and a small example of Viewpoint: Basic Price.

It was high time to update this model, trying to illustrate the new features provided by Capella 1.2.1 and now Capella 1.3.

The first version of the new model is downloadable here. It mainly contains the System Analysis level, because the operational need is very simple ūüėČ You will find examples of SMCB, SAB, SCDB, SES, SMSM, with several variations of each.

The progressive construction of the model is presented in a small explanatory document. The model and its companion document will be progressively completed with a Logical Architecture level, a Physical Architecture level, then the use of the Requirements add-on and of Property Values ‚Äč‚Äč…

An example of Exchange Scenario Diagram that was not possible before Capella 1.2.1 is given below. This is a scenario showing how two instances of the same User actor can interact with the Clock Radio.

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25 Jan 2019

An expanded MBSE training offer for 2018!

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The¬†MBSE training offer will become richer and more modular in 2018, distinguishing better from one side ‘Language & Method’, and the other ‘Tool’, with two major streams:
The general scheme is as follows:
  • MBSE with XX¬†training contains 66% theory and 33% group reflection on a case study (without tool)
  • YY in Action training contains instead 75% of practice (with a modeling tool) and 25% of theory illustrated with examples

MBSE with XX training is a strongly recommended prerequisite of the corresponding training YY in Action.


This new scheme will enable to gradually enrich the offer with new modules, such as:










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23 Feb 2018

First Capella Training in China!

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First Capella Training in China!

I had the pleasure of facilitating the first Capella training in China last week!

The session took place in¬†Nanjing¬†(historic city of 8 million inhabitants, 300 km from Shanghai ‚Ķ) in¬†Glaway Soft, for the Systems Engineering team. Luckily for me, there was air conditioning everywhere, the temperature being around 40¬įC during the day and 30¬įC during the night all week long ‚Ķ¬†

At Glaway Soft in Nanjing

Two people from this company had already started a pilot project with Capella at the beginning of the year and the objective of the training was both to consolidate their first experience but also to train other system or software engineers coming from Shanghai, Nanjing and Chengdu.

It was particularly impressive to do the review of a Capella model with the names of functions and components in ideograms at the end of the training session and to see the interface of the Capella tool in Chinese, translated by Glaway Soft. 

There is enormous potential there, as you can imagine, and I am confident that many projects will start quickly in China with Capella …

To be continued!

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01 Aug 2017