Tag: system validation

When a system is modified, does its TRL change?

When a system is modified, does its TRL change? ArgonDigital - enterprise automation experts

I was recently asked the question. “When a project begins with a existing device that has a TRL of 9, with the goal to develop a miniaturized version of the device, is the TRL of miniaturized version of the device still 9?  Your point of view will be very helpful.” The short answer is “no”. […]

Implementation in Requirements – Internal Directive (i.e., Constraint) to use a Legacy Component.

Implementation in Requirements – Internal Directive (i.e., Constraint) to use a Legacy Component. ArgonDigital - enterprise automation experts

We were recently asked the following question from one of our clients: “Our company is updating/replacing a legacy system.  The current system includes an embedded processor that was already built long ago and was developed without any requirements (at least formally defined and managed).  Given that this legacy processor has a nice set of features, […]

Requirements – What’s the Big Deal????

Requirements – What’s the Big Deal???? ArgonDigital - enterprise automation experts

Note: this is an update to this blog originally published in 2012. Preparing for the future A constant throughout the evolution of systems engineering is an ever-increasing complexity of systems which can be observed in terms of the number of system functions, components, and interfaces and their non-linear interactions and emergent properties. Each of these […]

What is the difference between verification and validation? Part 2

What is the difference between verification and validation? Part 2 ArgonDigital - enterprise automation experts

This is the second of our two-part blog concerning verification and validation.  In part 1 we discussed the basic concepts of verification and validatlion in terms of the context in which they are used within the system development lifecycle. In this second part of the blog, we discuss these concepts in terms of the Systems […]

What is the difference between verification and validation? Part 1

What is the difference between verification and validation? Part 1 ArgonDigital - enterprise automation experts

A question we are often asked is “What is difference between verification and validation?” This two-part blog answers that question.  In part 1 we discuss the basic concepts of verification and validation in terms of the context in which they are used within the system development lifecycle.  In part 2 of the blog, these concepts […]

How Do I Know When My Requirements Are Sufficient?

How Do I Know When My Requirements Are Sufficient? ArgonDigital - enterprise automation experts

This question was asked recently on a popular discussion group. Maybe a better question to ask: “How do I know when the requirement set for the system of interest is “done enough” to give to the development team?” Where “done enough” is the point of time in the development process where the cost of potential […]

Requirement–Driven Product Development

Requirement–Driven Product Development ArgonDigital - enterprise automation experts

I think it is safe to say that everyone that leads or is part of a product development project starts out with the intention of delivering a winning product. We define a winning product as a product that delivers what is needed, with the expected quality, within schedule and budget constraints. To deliver winning products, […]

What is the Biggest Obstacle to Good Requirements?

What is the Biggest Obstacle to Good Requirements? ArgonDigital - enterprise automation experts

I was recently asked the question: “What do you think is the biggest obstacle to good requirements documentation? I have been doing this for 25+ years and never see the end product match the requirements…..” I smiled when I saw the statement: “..never see the end product match the requirements…..”. This statement reminded me of […]

Should the “testors” be involved in requirements development?

Should the “testors” be involved in requirements development? ArgonDigital - enterprise automation experts

On more than one occasion, I have been asked about early involvement of the test team.  To paraphrase a most recent question, I was asked:: “I have studied different articles about this new tendency of involving testers earlier in the project, namely during requirements analysis.  This early involvement means that the tester gives input as […]

Medical Device Development and ArgonDigital

Medical Device Development and ArgonDigital ArgonDigital - enterprise automation experts

We are frequently asked whether or not the training we offer is specifically geared to the medical device industry or if our training is generic.  The short answer – our instructors have extensive experience in providing training for the medical device industry.  We have taught both our standard courses as well as tailored classes for […]

User vs. Product Requirements

User vs. Product Requirements ArgonDigital - enterprise automation experts

“What is the difference between user requirements and product requirements?” The short answer is that user “requirements” often address only what the users expect they will be able to do with the system or their expectations for the functionality, performance, and quality of the product being developed.  There are often many problems with the set […]

Use of Multiple Verification Methods – update

Use of Multiple Verification Methods – update ArgonDigital - enterprise automation experts

We received the following question via our “Ask the Experts”  page: “Can (should) a requirement have more than one verification method?” The short answer is no, you should state the primary verification method you will use to show the system of interest meets the stated requirement. However the question is a common one and I […]