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Introduction to GR228X Test Systems
Overview
The GR228X Test Systems, hereafter referred to as the GR228X systems, are a family of
PC-controlled combinational test systems. The systems are designed to perform rapid electrical
testing of printed circuit boards with high diagnostic accuracy. The GR228X systems run on a
Windows NT-based software platform and are configurable to meet the hardware and software
requirements of the target application.
Your GR228X system’s primary purpose is to execute in-circuit tests on electrically-isolated
components of a unit–under–test (UUT). Such components include analog IC, digital IC, hybrid IC, and
memory components.
NOTE The GR2281A and GR2287A Test Systems do not have digital test vector
capabilities, but can detect opens on digital components using the TEST
XPRESS software.
A GR228X system is particularly effective at detecting manufacturing faults, such as:
z Shorts and opens within components or on board etches
z Missing, wrong, damaged, or improperly inserted components
z Out of tolerance and faulty components
z Incorrectly programmed components and faulty memory devices
z Functional faults on complete circuits
This chapter provides an introduction to all Windows NT-based GR228X Test Systems, which
include any VMS-based GR228X Test Systems that have been retrofitted with a Windows
NT-based PC.
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