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Communications Simulator and Analyser

PDF print version of this specification : A4 or Letter

The Communications Simulator and Analyser System (CSA) is a versatile and generic data communications simulator and analyser. It provides the capability to interactively simulate and analyse message-based communications between any number of system components or sub-systems. The CSA system supports a multitude of protocols and communications media including Fibre Distributed Data Interface (FDDI), Ethernet, RS422 (HDLC) and RS232.

Functions

The functions of the CSA are :

  • Support of the verification of correct response of a sub-system to received messages
  • Support of the verification of the veracity of messages/parameters generated by the sub-system under test
  • Support of the verification of error handling for invalid message formats, invalid parameters and invalid parameter limits
  • Support of interface transaction debugging
  • Support of the verification of a sub-system's adherence to interface specifications
  • Support of system communications load testing

Features

The features of the CSA are as follows :

  • Interactive creation and manipulation of user data
  • Interactive creation and manipulation of message parameters
  • Interactive creation and manipulation of message transactions
  • Interactive creation and manipulation of function generators and attaching the outputs of the function generators to message fields
  • Logging, recording and display of received and transmitted messages
  • Message log player
  • Real-time message traffic display
  • Scripting ability to automate repetitive tests
  • Repeatability of tests

CSA Components

The main CSA components are the Man-Machine Interface (MMI) and Data Repository (DR) running under Windows NT and the CSA Engine running on a VxWorks real-time platform. The DR is based on a standard SQL database.  All these components are housed in a standard PC-style housing with standard I/O connectors for mouse, keyboard, display monitor and network interfaces.

CSA Architecture

The message-based communication model derives from the different layers of data and information as shown. 

Message Instances
Message Definitions
Application Parameters
General Parameters and Enumerations

  CSA Information Model

The user can define his own data types, as well as message parameter types. Messages are created by arranging message parameters in the required order. Message parameters can be grouped to provide discrimination for header, trailers, etc. The transmit characteristics for any message are user-definable.

The HMI is Windows NT-based. User-defined function generators can be used to provide variable values for the transmitted messages.

CSA MMI 
Typical CSA MMI

Applications

  • System development
  • System integration
  • Systems analysis

Specifications

  • Static and dynamic parameters in messages
  • Transmit and log messages at 100 Kbytes/s
  • Log received messages at 200 Kbytes/s

 

CSA   Issue 3   2010-09-01
 CCII Systems (Pty) Ltd • P.O. Box 171 • Rondebosch 7701 • South Africa 
Telephone : (+27 21) 683 5490 • Facsimile : (+27 21) 683 5435 • WWW : www.ccii.co.za