HP 1660CS, User Manual

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Using SPA with other features
Programming with SPA
SPA is programmable. Refer to the HP 1670A-Series Logic Analyzers
Programmer’s Guide for SPA commands. The Programmer’s Guide is
available as an option with the logic analyzer. Contact your HP Sales Office
for more information.
Changing between SPA and a State/Timing Analyzer
If you have configured a state or timing analyzer in the logic analyzer, you
can quickly change to SPA, or from SPA to a state or timing analyzer. You can
use the same Format Specification in your SPA measurements as you did in
your state or timing analysis measurements.
To change between a state analyzer and SPA, go to the Analyzer
Configuration menu, select the Type field, and select SPA from the list.
When SPA is selected, a separate trace specification definition is used. Even
though the Qualified State Histogram and Time Interval modes use the same
pattern recognizers as SPA, the SPA definitions are kept separate from those
entered in the state or timing analyzer mode. As a result, switching between
SPA and state or timing recovers the user’s original pattern recognizers for
the selected mode.
Any Symbols in the Format Specification will also carry over to SPA.
Using SPA in Group Runs
In the HP 16500A Logic Analysis System, you can define an intermodule
sequence using various combinations of modules and run it singly or
repetitively. Similarly, the HP 1660CS-series logic analyzers allow you to set
up group runs using the Arming Control field of the other machine’s Trigger
menu.
By its statistical nature, SPA runs best as a repetitive measurement system.
Therefore, if you include SPA in a Group Run, it will execute and update the
SPA displays, but the data may not be acquired in a statistically
random-repetitive fashion. It may not represent a true statistical analysis of
your target system.
Another way to make SPA measurements in conjunction with other analysis
is to run SPA independently (do not include it in the Group Run), and set up
the other machines as you normally would. In this way, SPA will provide a
truer statistical analysis of your target system.
System Performance Analysis (SPA) Software
Using SPA with other features
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