Teradyne Z1800 Series, Руководство оператора

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Z1800-Series Operator’s Guide
Vacuum System—
Vacuum Testers
The vacuum system consists of the hoses, plumbing and pipes, vacuum valve assemblies,
and vacuum control switches.
The application of vacuum in board test is a two-step process. First, turning on the Vacuum
Interface switch pulls the fixture onto the fixture receiver interface. Second, actuating the
fixture vacuum switches allows the board to be pulled down onto the fixture manually or
under program control.
For information about the vacuum controls, refer to the “Console Controls” section earlier
in this chapter.
Fixture—Vacuum
Testers The fixture is the interface between the board-under-test and the tester. Z1800-Series testers
accommodate fixtures of varying sizes and also enable you to test boards in tandem.
The fixture receiver interface and vacuum assembly accommodates three types of fixtures:
• Single-well fixture for testing one board at a time or, with the Multipanel functionality,
several boards at a time.
•
Tandem fixture with two separately actuated vacuum chambers which enable the
operator to change a board on one chamber while the board on the second chamber is
being tested.
• WaveScan fixture, which allows you to use a radio frequency stimulus technique to
deliver high fault coverage over a range of device types and fault classes.
Important: The second vacuum valve is standard for the Z1890, Z1884, and Z1866, but it is an
option for the other Z1800-Series testers, and must be installed to use the tandem
fixture.
Computer
For computer specifications for the standard tester configuration, please refer to the Z1800-
Series Site Preparation Guide and the Z1800-Series Computer Configuration Guide.
Keyboard
Use the keyboard to perform both standard operations and specific testing operations
through dedicated function keys. The keyboard template included with the tester indicates
the functions invoked by the keys. Pressing the Shift-F1 key combination displays a
keyboard template at the bottom of the screen.
Mouse
Use the mouse to perform simple point and click selections to perform operations.
Screen Color
Screen display colors correspond with the type of information they show. They alert you to
current operating situations.
Printer
The printer prints board test results. What you do with the printed test results depends on
your production environment requirements. For example, in some production
environments, printouts of test results, especially failures, are attached to the board itself, to
inform repair personnel of the nature of the failure. In other environments, printouts of all
tests are kept together.
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