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Chapter 8: Theory of Operation
Self-Tests Descriptions
Self-Tests Descriptions
The self-tests identify the correct operation of major functional areas in the logic
analyzer. The self-tests are not intended for component-level diagnostics.
Three types of tests are performed on the Agilent 1680A,AD- and 1690A,AD-
series logic analyzers: the power-up self-tests, the functional performance
verification self-tests, and the parametric performance verification tests.
The power-up self-tests are performed when power is applied to the instrument.
The functional performance verification self-tests are run using a separate
operating system, the performance verification (PV) operating system.
Parametric performance verification requires the use of external test equipment
that generates and monitors test data for the logic analyzer to read. The
performance verification procedures in chapter 3 of this service guide make up
the parametric performance verification for the logic analyzer. Refer to chapter 3,
"Testing Performance," for further information about parametric performance
verification.
Power-up Self-Tests (1680A,AD-series)
The power-up self tests on the 1680A,AD-series logic analyzers is performed by
the Microsoft Windows ® 2000 Professional operating system. As part of the
Windows 2000 Professional power on self test (POST), the presence of all
required system components is verified. When the text "Starting Windows . . ."
appears, this means required system components have been detected and have
passed their individual power-up self-tests.
For more information on the Windows ® 2000 Professional POST, refer to
Microsoft on-line(http://www.microsoft.com) and the Microsoft Support Services
Knowledge Base (http://search.support.microsoft.com/kb/).
Connectivity Tests (1690A,AD-series)
A Connectivity test routine is done on an Agilent 1690A,AD-series hosted logic
analyzer when it is connected to a host PC. A communications test is first done
on the hosted logic analyzer when the IEEE 1394 plug and play interface is
connected between the host PC and the logic analyzer. After the communications
test is successfully completed, an operational accuracy calibration is done on the
logic analyzer to test the major subsystems of logic analyzer acquisition and to
initialize the acquisition system.