ABI Electronics Ltd

 

ABI RevEng Schematic Learning System


THE PROBLEM

Maintenance and repair operations continue to suffer from a lack of circuit diagrams.  The shortage has been caused, in part, by the restrictive practices of OEMs and by the increased use of electronic systems in industry.  Also, there is a growing problem where the original suppliers no longer exist or are unable to provide support.  This is especially severe for users of systems with a long service life.

 

THE SOLUTION

ABI REVENG offers an effective method of creating professional quality circuit diagrams from a sample board.  The REVENG system comprises a PC controlled continuity measuring hardware system, RevWin control software and EdWin, a fully featured CAD package

 

OVERVIEW

REVENG learns the connectivity of a sample circuit then produces a NetList (a list of the components and connections).  The NetList is imported into EdWin to create professional quality circuit diagrams

 

LEARNING

Learning is by clips, connectors and probes that are attached to clusters of components.  RevWin guides the operator to place and walk the clips around the reference circuit

 

INTELLIGENT CONTROL

RevWin generates the most efficient sequence of clip combinations and movements to learn all possible connections

 

ACCURACY

The learned data can be confirmed using a verification facility

 

OPERATOR INTERVENTION

The operator can modify and override the automatic placement of the clips if necessary

 

VERIFICATION

To minimise operator errors, the system applies an Orientation Check and Pin Check to confirm clip contact and position

 

MEASUREMENT TECHNIQUE

REVENG measures the resistance between the component pins.  The short circuit threshold is set at 7 ohms.  The compliance is 5 volts into an open circuit and 10 ma into a short circuit.  Typically the system delivers 10 uA into a circuit

 

SAFETY

ABI REVENG learns without applying power to the board and limits the applied voltage and current so that semiconductor gates are not affected and it is safe to use even on low power technologies

 

COMPONENT ACCESS

There is a wide range of IC clips and connectors.  If a clip or connector is not available or cannot be fitted due to the physical constraints of the board then the hand held PROBE and BUZZER facilities are used

 

NETLISTS

A NetList is a valuable document in test engineering and maintenance support.

  • For test engineers to trace signals
  • As input to CAD package
  • As data input for ate programs

The NetList is imported, then the components are placed and the signals routed automatically.  Drawings can be customised to create bus structures and multi-page schematics.  Finished drawings can be output to any Windows plotters and printers.

 

LIBRARIES

There are over 12,000 components in the library.  New and custom devices can be added easily without knowledge of their content or function.

 

UNIQUE

REVENG 2000 was designed in the UK to provide an effective solution that overcomes the restrictions imposed by alternative methods.  It is not limited by the size and complexity of the circuit or the component technology used

 

CLIPS AND CONNECTORS

There is a wide range of standard clips and connectors for DIL, SIL, PLCC, SOIC, QUAD IC’s and discrete components plus custom connectors

 

CAD

A professional drawing capability is provided by EdWin from Visionics.  Important facilities include

  • Import NetList place components
  • Auto route signals
  • Multi page schematics
  • Bus structure support
  • Extensive libraries 12,000 devices
  • Rubber band and Rats nest functions
  • Block move and rotate

Optional facilities include Bill of Materials, PCB Layout, Mix-mode simulation, Arizona Autorouter, Thermal Analyser, EDSpice, EMC + Signal Integrity

 

Edwin provides special features to enable drawings to be generated in less than a day.

 

RevWin controls the system hardware and provides links with the CAD software.  Key features include

  • Icon driven
  • Context sensitive help
  • Unlimited number of clips and connectors
  • Partial circuit learn and draw
  • Repeat learn and verify
  • Optimised clip movement
  • Caters for digital and analogue circuits
  • Guided probe for non-standard components
  • Process can be suspended, restarted and terminated at any stage

 

PIZZA BOX SYSTEMS

Entry level system for low budget or small to medium circuits.

 

 

 

        PIZZA BOX unit equipped with 256 measurement channels.

        30 x 7 x 26 cm - 1.5 Kg

 

 

CABINET SYSTEMS

High pin count system for multiple requirements and large circuits.

 

 

 

 

Cabinet equipped with control card and 1024 to 2048 channel measurement channels

 

 

 

EXPANSION

Systems can be expanded to 2048 channels at any time after installation to meet changes in budget availability or application requirements.

 

 

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