Introduction; General; Shielding - PEP CP381 Manual

CP381
5. System Considerations
5.1

Introduction

In addition to the basic specification requirements for signals being presented to the CP381
which have been addressed in chapter 4, system integrators need to be aware of the overall
system environment and the application needs when designing the interfacing to the CP381.
The following chapters address a number of more apparent considerations which should be ad-
dressed but certainly not all of the possible situations which may be encountered. Many of the
considerations presented here are recommendations, but some are definite requirements if the
CP381 is to successfully achieve its purpose.
5.2

General

Considerations:
1. Care must be taken to ensure that proper grounding concepts are followed, and that the
integrity of the grounding system within the application be maintained.
2. Input wire routing should avoid proximity to high voltage or current sources.
3. Where possible input wiring length should be kept as short as possible.
5.3

Shielding

Considerations:
1. Input cable shielding in general is recommended.
2. The requirements for shielding can be seen primarily as a function of the system design
and environment, but empirical results must also be considered.
3. The CON2 connector has a metal housing which is connected to the CP381 shield and
is isolated from the system ground.
4. Ensure that if shielding is used that it is not in anyway connected to the system ground.
ID 24107, Rev. 01 © 2002 PEP Modular Computers GmbH
System Considerations
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