Waiting for Trigger | HP 16501A LOGIC, 16500C specification

If You Have a Problem

“Waiting for Trigger”

“Waiting for Trigger”

If a trigger pattern is specified, this message indicates that the specified trigger pattern has not occurred. Verify that the triggering pattern is correctly set.

When analyzing microprocessors that fetch only from long-word aligned addresses, if the trigger condition is set to look for an opcode fetch at an address not corresponding to a long-word boundary, the trigger will never be found.

If a “don’t care” trigger condition is set, this message indicates:

For an HP 16511B Logic Analyzer, only one of the two cards is receiving its state clock. Refer to “Slow or Missing Clock.”

For an HP 16510A/B Logic Analyzer, the pattern duration is probably set to less than (<) instead of greater than (>). Since a “don’t care” pattern is always true, the “less than” condition is never satisfied. Set the trigger correctly for the measurement that is desired.

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HP 16501A LOGIC, 16500C manual Waiting for Trigger

Contents

HP 16500C /16501A Logic Analysis System Powerful, easy-to-use interface Install measurement modules in any slotCalibrate measurement modules after installation System of measurement modules Iii Page This Book See Also HP 16500C /16501A Logic Analysis System User’s Reference Contents Contents Skew AdjustmentSpecial displays Inverse Assembler Problems Preprocessor ProblemsIntermodule Measurement Problems Messages Triggering Triggering Select the state analyzer Trigger menu Set Count to Time To store and time the execution of a subroutineTo store and time the execution of a subroutine To store and time the execution of a subroutine Example As shown in the display Select the state analyzer Trigger menu To trigger on the nth iteration of a loopTo trigger on the nth iteration of a loop To trigger on the nth recursive call of a recursive function Triggering on the 22nd Call of a Recursive Function To trigger on entry to a function To trigger on entry to a function Triggering on Entry to a Function Capturing a Bad Write to a Variable To trigger on a loop that occasionally runs too long To trigger on a loop that occasionally runs too long Verifying Correct Return from a Function Call To trigger after all status bus lines finish transitioning To trigger after all status bus lines finish transitioning To find the nth assertion of a chip select line To find the nth assertion of a chip select line Verifying Setup Time for Memory Address Select the timing analyzer Trigger menu Triggering When I/O Data Not Returned To test minimum and maximum pulse limits To test minimum and maximum pulse limits Triggering when a Pulse Exceeds Minimum or Maximum Limits To detect a handshake violation To detect a handshake violation To detect bus contention To detect bus contention Made by the two analyzers Cross-Arming Trigger ExamplesIntermodule Measurements To examine software execution when a timing violation occurs Trigger on arm ∙ Edge1 1 time Intermodule Measurements Intermodule Measurements Intermodule Measurements Intermodule Measurement Examples To set up a group run of modules within the HP 16500CSelect the Group Run field in the upper right hand corner To set up a group run of modules within the HP 16500C Start the external instrument or system State Analyzer and Oscilloscope armed from Port Select Port IN/OUT Select Done in the Port IN/OUT Setup menuSelect the Port OUT Source field Driving the Port Out BNC in an Intermodule Measurement Intermodule Measurements Module Status Intermodule Measurements Module Time Correlation To use a timing analyzer to detect a glitch To use a timing analyzer to detect a glitch To capture the waveform of a glitch To capture the waveform of a glitch Intermodule Measurements To test a circuit using stimulus-response To test a circuit using stimulus-responseSelect the Intermodule menu Intermodule Measurements Intermodule Measurements Special Displays in this chapter Special displays Interleaved Trace Lists To interleave trace lists To interleave trace lists Interleaved Trace Lists on the HP 16550A Select the module for which you wish to show waveforms Skew Adjustment in this chapter Skew Adjustment Set up the trigger conditions for each module Connect an input signal from each module to the same signalSelect Group Run Record the differences shown by the two modules File Management File Management Transferring Files Using the Flexible Disk Drive To save a measurement configuration To save a measurement configuration Saving the Oscilloscope Configuration for Skew Testing To load a measurement configuration To load a measurement configuration To load a measurement configuration To save a trace list in Ascii format To save a trace list in Ascii format Part of a Trace Listing Saved as an Ascii File To save a menu or measurement as a graphic image To save a menu or measurement as a graphic image An Oscilloscope Display Saved as a TIF Image To load system software To load system software Using the LAN Interface To set up the HP 16500C To set up the HP 16500C To set up the HP 16500C Example HP 16500C System Programmer’s Guide for more information on Set up the system for the measurement you want to make Run the analyzer to acquire data \ copy L\slotc\data.asc\68000bus\addrlo local path name \system\graphics Concepts Concepts Trigger Sequence Specification Trigger Sequencer Sequence-Advance Specification Trigger specification can look like the following Analyzer Resources For example Limitations Affecting Use of Analyzer Resources HP 16550A Resource Division Group Pair Resource Operation Pair Links Timing Analyzer Inverse Assembler Inverse Assembly Synchronization Settings Preprocessor User’s Guide for more information on switchSymbols Configuration Translation for Analyzer Modules Concepts Concepts Page If You Have a Problem If You Have a Problem Intermittent data errors Analyzer ProblemsUnwanted triggers No Setup/Hold field on format screen No activity on activity indicatorsNo Setup/Hold field on format screen Capacitive loading No trace list display No trace list display Preprocessor Problems Target system will not boot up Erratic trace measurements Slow clockSlow clock Erratic trace measurements Inverse Assembler Problems No inverse assembly or incorrect inverse assembly Inverse assembler will not load or run Inverse assembler will not load or run Intermodule Measurement Problems An event wasn’t captured by one of the modules Messages Default Calibration Factors Loaded HP 16540, 16541,Inverse Assembler Not Found Measurement Initialization Error Measurement Initialization Error No Configuration File Loaded No Configuration File LoadedSelected File is Incompatible Slow or Missing Clock State Clock Violates Overdrive Specification State Clock Violates Overdrive SpecificationTime from Arm Greater Than 41.93 ms Waiting for Trigger Waiting for Trigger Application Notes Application Notes Application Notes and Product Notes Application Notes Page Glossary Attenuation factor Input impedance Glossary-3 Div See horizontal sweep speed State sequence levels The indi Glossary-6 Glossary-7 Glossary-8 Index Data Index-2 Index-3 Index-4 Document Warranty Product Warranty