Intermodule Measurements
An intermodule measurement is a measurement that is coordinated
between two or more modules to capture different types of
information related to a problem you are trying to solve. This chapter
shows you how to make several kinds of intermodule measurements.
Intermodule measurements can involve state analyzers, timing
analyzers, oscilloscopes, and pattern generators. The measurement
may be as simple as coordinating the startup of several modules
during a measurement; it may be quite complex and include multiple
arming sequences between modules and external equipment.
For example, you may have a timing analyzer detect the occurrence of
a glitch, and at the same time, have an oscilloscope capture the glitch
waveform and a state analyzer capture the program flow before and
after the occurrence of the glitch. With several types of information
obtained from various analysis modules, you can discover problems
that would otherwise be difficult to identify.
The figure on the opposite page shows how intermodule bus arming
signals are connected between modules inside the HP 16500C and
HP 16501A. Note that any arm input can be driven by any slot, and
that the port input line can drive any slot.
If you are unfamiliar with the basic operation of the Intermodule
Menu, try working the examples in the Logic Analyzer Training Kit.
2–2
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