
1 Introduction
1-4
Selecting a Target System
Selecting a target system for your real-time application consists of three major
steps: selecting the form factor, selecting the I/O boards, and selecting the
CPU. You should, if possible, follow these steps in order.
This section includes the following topics:
• Selecting the Form Factor
• Selecting I/O Boards
• Suggested Method for Selecting I/O Boards
• Useful Tips for Selecting I/O Boards
• Selecting the CPU
Selecting the Form Factor
The key to determining the best form factor for your application is
understanding the environment in which the target hardware is placed.
Typical environmental constraints include:
• Lack of space for the target system
• Wide temperature range
• Mechanical vibration and shock
• Water and dust
• Electromagnetic interference (EMI)
The range of environmental conditions your hardware must endure can be very
broad. At one end of the spectrum is a clean environment. For example, a clean
environment could be an office that is climate controlled and has no mechanical
or electrical interference. At the other end of the spectrum is a harsh, cramped
environment with vibration, water, dust, EMI, and extreme temperatures. For
example, a harsh environment would be on-board a heavy equipment vehicle
operating in the field.
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