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Triggering

As you begin to understand a problem in your system, you may realize

that certain conditions must occur before the problem occurs. You

can use sequential triggering to ensure that those conditions have

occurred before the analyzer recognizes its trigger and captures

information.

You set up sequential triggering as follows:

• Select the Trigger menu for the module you are using.

• In the Trigger menu, define terms and associated values to be used

when searching through the sequence.

• In the Trigger menu, select the number of the state sequence level

you want to modify, and enter the appropriate store qualification,

sequence-advance specification, and sequence-Else specification.

If you aren’t familiar with the trigger menus, try working through the

examples in the Logic Analyzer Training Kit manual, or refer to the

User’s Reference for your analyzer.

1–2

Table of Contents8
Triggering12
To Store and Time the Execution of a Subroutine14
To Trigger on the Nth Iteration of a Loop16
To Trigger on the Nth Recursive Call of a Recursive Function17
To Trigger on Entry to a Function19
To Capture a Write of Known Bad Data to a Particular Variable21
To Trigger on a Loop that Occasionally Runs too Long22
To Verify that All Stacks and Registers Are Restored Correctly before Exiting a Subroutine23
To Trigger after All Status Bus Lines Finish Transitioning24
To Find the Nth Assertion of a Chip Select Line25
To Verify that the Chip Select Line of a Memory Chip Is Strobed after the Address Is Stable26
To Trigger When Expected Data Does Not Appear on the Data Bus from a Remote Device When Requested27
To Test Minimum and Maximum Pulse Limits29
To Detect a Handshake Violation31
To Detect Bus Contention32
Cross-Arming Trigger Examples33
To Examine Software Execution When a Timing Violation Occurs34
To Look at Control and Status Signals During Execution of a Routine35
Intermodule Measurements36
Intermodule Measurement Examples39
To Set up a Group Run of Modules Within the HP 16500C39
To Start a Group Run of Modules from an External Trigger Source41
To Start an External Instrument on Command from a Module Within the HP 16500 and 16501 Mainframe43
To See the Status of a Module Within an Intermodule Measurement45
To See Time Correlation of each Module Within an Intermodule Measurement47
To Use a Timing Analyzer to Detect a Glitch49
To Capture the Waveform of a Glitch50
To Capture State Flow Showing How Your Target System Processes an Interrupt51
To Test a Circuit Using Stimulus-Response52
To Use a State Analyzer to Trigger Timing Analysis of a Count-Down on a Set of Data Lines53
To Monitor the Activity of Two Coprocessors in a Target System54
Special Displays56
To Interleave Trace Lists57
To View Trace Lists and Waveforms Together on the same Display59
Skew Adjustment61
To Adjust for Minimum Skew between Two Modules Involved in an Intermodule Measurement62
File Management64
Transferring Files Using the Flexible Disk Drive66
To Save a Measurement Configuration67
To Load a Measurement Configuration69
To Save a Trace List in ASCII Format71
To Save a Menu or Measurement as a Graphic Image73
To Load System Software75
Using the LAN Interface76
To Set up the HP 16500C77
To Transfer Data Files from the HP 16500C System to Your Computer79
To Transfer Graphics Files from the HP 16500C System to Your Computer81
Concepts82
The Trigger Sequencer84
The Inverse Assembler91
Configuration Translation for Analyzer Modules94
If You Have a Problem98
Analyzer Problems100
Intermittent Data Errors100
Unwanted Triggers100
No Setup/Hold Field on Format Screen101
No Activity on Activity Indicators101
Capacitive Loading101
No Trace List Display102
Preprocessor Problems103
Target System will Not Boot up103
Slow Clock104
Erratic Trace Measurements104
Inverse Assembler Problems106
No Inverse Assembly or Incorrect Inverse Assembly106
Inverse Assembler will Not Load or Run107
Intermodule Measurement Problems108
An Event Wasn't Captured by One of the Modules108
Messages109
Default Calibration Factors Loaded" (HP 16540, 16541, and 16542)109
Inverse Assembler Not Found109
Measurement Initialization Error110
No Configuration File Loaded111
Selected File Is Incompatible111
Slow or Missing Clock111
State Clock Violates Overdrive Specification112
Time from Arm Greater than 41.93 Ms112
Waiting for Trigger113
Application Notes114
Glossary118
Index126

Brand	HP
Model	16500C
Category	Measuring Instruments
Language	English

HP 16500C User Manual

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