HP 16501A LOGIC User manual

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User’s Guide
Publication number 16500-97022
August 1997
For Safety information, Warranties, and Regulatory
information, see the pages behind the Index
© Copyright Hewlett-Packard Company 1987, 1990, 1993, 1994, 1996, 1997
All Rights Reserved
HP 16500C /16501A Logic
Analysis System

HP 16500C—At a Glance
A system of measurement modules
The HP 16500C isthe mainframeof the
Hewlett-Packard Logic Analysis
System. It offersa modular structure for
plug-in cards witha wide rangeof state,
timing, oscilloscope, and pattern
generator capabilities.
A powerful, easy-to-use interface
Thetouchscreen interfaceoffers
pop-up menusand colorgraphicsto
lead you through measurement
configurationswithout having to
remember lots ofsteps. You can add a
keyboard or mouse tospeed datainput
andmeasurementconfiguration.
The HP 16501A expands module
capacity
The HP 16501A isthe add-on mainframe
for expanding the module capacity of
the HP 16500C. When the two are
connected, theyform a single ten-card
system that isturned on and controlled
by the HP 16500C.
Intermodule measusurement capability
The HP 16500C offersintermodule
measurementfeatures that allow you to
capture complex system activity.
Modulescan
•be armed by an external instrument,
•be armed by another module inthe
HP16500C or HP16501A frames, or
•be used to arm anexternal
instrument.
Install measurement modules in any
slot
Single cardanalyzers, oscilloscopes,
and other options can goin any slot of
the HP 16500C or HP 16501A. You should
generallybegin installing cardsstarting
with thebottom-most slot and working
up.
Some measurement moduleshave
multiple cards. Amultiple-card module
must be installed into adjacent slots in
the same mainframe—that is, you
cannotinstall one card of the module
into the HP 16500C and the otherinto
the HP 16501A.
Calibratemeasurementmodules after
installation
Some measurement modulesare
sensitive to temperature and voltage
variationsbetween different
mainframes. Thus, whenyou install
such amodule in the mainframe, you
shouldcalibrate it before using itto
ensure maximum measurement
precision and accuracy.
See the Service Guidefor each
measurementmodule for installation
and calibration procedures.
ii

HP 16500C
HP 16501A
iii

iv

In This Book
This User’s Guide shows you how to use
the HP 16500C Logic Analysis System in
your everyday debugging work.
Chapter 1, “Triggering,” shows you how
to set up the analyzer to trigger on the
various kinds of events present in your
system. Advanced triggering capability
allows you to look at only the program
states of interest when you are solving a
particular problem.
Chapter 2, “Intermodule Measurements,”
shows you how to configure multiple
HP 16500 modules and external
measurement instruments into a single
measurement system in which modules
trigger each other.
Chapter 3, “File Management,” shows you
how to transfer files to and from the
HP 16500C using flexible disks, LAN
interfaces, and other interfaces.
Chapter 4,“Concepts,” gives you a brief
introduction to the ideas underlying the
trigger sequencer and the inverse
assembler, two important components of
sophisticated logic analysis.
Chapter 5, “Solving Problems,” shows you
how to diagnose and correct the more
common types of problems that might
occur while you are making a
measurement.
Chapter 6, “Application Notes,” lists the
various application notes that HP has
published regarding the HP 16500C and
other similar HP logic analyzers. These
notes will give you more information
Triggering
1
Intermodule Measurements
2
File Management
3
Concepts
4
Solving Problems
5
ApplicationNotes
6
Glossary
Index
v

about specific application problems and how to solve them using an HP logic
analyzer.
See Also For general information on setup and operation of the HP 16500C, see the
HP 16500C /16501A Logic Analysis System User’s Reference.
For information on programming the HP 16500C using a computer controller
such as a workstation or personal computer, see the HP 16500C/16501A
Logic Analysis System Programmer’s Guide. The Programmer’s Guide is
available from your HP Sales Office.
For information on logic analyzers, oscilloscopes, preprocessors, and other
logic analysis system options, see the User’s Reference manual for those
options.
vi

Contents
1 Triggering
To store and time the execution of a subroutine 1–3
To trigger on the nth iteration of a loop 1–5
To trigger on the nth recursive call of a recursive function 1–6
To trigger on entry to a function 1–8
To capture a write of known bad data to a particular variable 1–10
To trigger on a loop that occasionally runs too long 1–11
To verify that all stacks and registers are restored correctly before
exiting a subroutine 1–12
To trigger after all status bus lines finish transitioning 1–13
To find the nth assertion of a chip select line 1–14
To verify that the chip select line of a memory chip is strobed after
the address is stable 1–15
To trigger when expected data does not appear on the data bus from
a remote device when requested 1–16
To test minimum and maximum pulse limits 1–18
To detect a handshake violation 1–20
To detect bus contention 1–21
Cross-Arming Trigger Examples 1–22
To examine software execution when a timing violation occurs 1–23
To look at control and status signals during execution of a routine 1–24
2 Intermodule Measurements
Intermodule Measurement Examples 2–4
To set up a group run of modules within the HP 16500C 2–4
To start a group run of modules from an external trigger source 2–6
To start an external instrument on command from a module within
the HP 16500 and 16501 mainframe 2–8
To see the status of a module within an intermodule measurement 2–10
To see time correlation of each module within an
intermodule measurement 2–12
To use a timing analyzer to detect a glitch 2–14
To capture the waveform of a glitch 2–15
vii

To capture state flow showing how your target system processes
an interrupt 2–16
To test a circuit using stimulus-response 2–17
To use a state analyzer to trigger timing analysis of a count-down on
a set of data lines 2–18
To monitor the activity of two coprocessors in a target system 2–19
Special displays 2–21
To interleave trace lists 2–22
To view trace lists and waveforms together on the same display 2–24
Skew Adjustment 2–26
To adjust for minimum skew between two modules involved in
an intermodule measurement 2–27
3 File Management
Transferring Files Using the Flexible Disk Drive 3–3
To save a measurement configuration 3–4
To load a measurement configuration 3–6
To save a trace list in ASCII format 3–8
To save a menu or measurement as a graphic image 3–10
To load system software 3–12
Using the LAN Interface 3–13
To set up the HP 16500C 3–14
To transfer data files from the HP 16500C system to your computer 3–16
To transfer graphics files from the HP 16500C system to your computer 3–18
Contents
viii

4 Concepts
The Trigger Sequencer 4–3
The Inverse Assembler 4–10
Configuration Translation for Analyzer Modules 4–13
5 If You Have a Problem
Analyzer Problems 5–3
Intermittent data errors 5–3
Unwanted triggers 5–3
No Setup/Hold field on format screen 5–4
No activity on activity indicators 5–4
Capacitive loading 5–4
No trace list display 5–5
Preprocessor Problems 5–6
Target system will not boot up 5–6
Slow clock 5–7
Erratic trace measurements 5–7
Inverse Assembler Problems 5–9
No inverse assembly or incorrect inverse assembly 5–9
Inverse assembler will not load or run 5–10
Intermodule Measurement Problems 5–11
An event wasn’t captured by one of the modules 5–11
Contents
ix