Agilent Technologies. All rights reserved
Agilent Technologies 16760A Logic Analyzer
Probing
Captures input signals as low as 200 mV p-p
Sampling Mode on
Agilent Technologies 16760A Logic Analyzer
Concepts on
Reference on
Glossary see
See Also
Contents
Choosing the Sampling Mode
114
Using Symbols 101
110
112
Format Tab 174
Displaying Captured Eye Scan Data
152
155
210
Eye Scan Tab 204
211
240
Specifications and Characteristics
259
Glossary Index
Contents
Getting Started
Eye scan sampling mode, measurements will have these steps
Next . Choose the sampling mode on
Probing and Sampling Mode Selection Steps
Connect logic analyzer to the device under test
To choose the sampling mode
Choose the sampling mode
If you chose State Mode
If you chose Timing Mode
Either Timing Mode or State Mode
Next . Format labels for the probed signals on
If you chose Eye Scan Mode
Format labels for the probed signals
To specify threshold voltages
To assign pods to the logic analyzer
Defined threshold voltage Select the Close button
Next
To assign names to logic analyzer channels
Define the trigger condition
Timing Mode or State Mode Steps
Next . Run the measurement on
Run the measurement
Next . Display the captured data on
Display the captured data
To open Waveform or Listing displays
To add display tools via the Workspace window
Next For More Information... on
Select channels for the eye scan measurement
Eye Scan Mode Steps
Next . Set the eye scan range and resolution on
Set the eye scan range and resolution
Next . Run the eye scan measurement on
Run the eye scan measurement
Next . Display the captured eye scan data on
Display the captured eye scan data
Eye Scan display window, use the following subtabs
For More Information
For More Information
Probing and Selecting the Sampling Mode
Probing and Selecting the Sampling Mode
Probing the Device Under Test
Using the E5378A Single-Ended Probe
Either
Single-ended signal
Number
Numbers
Using the E5379A Differential Probe
Reference voltage
Or single-ended signals
Independent threshold adjustment
Negative data inputs
Or AMP
Using the E5380A Mictor-Compatible Probe
Using the E5382A Single-ended Flying Lead Probe Set
Additional Accessories
Using an Analysis Probe
Probing the Device Under Test
Selecting the Timing Mode Asynchronous Sampling
Choosing the Sampling Mode
To select the conventional/transitional configuration
To select the timing mode
Sample rate is the inverse of the sample period
To specify the sample period
To manually adjust sampling positions on
Selecting the State Mode Synchronous Sampling
State Mode Sampling Position
To automatically adjust sampling positions on
To select the state speed configuration
To select the state mode
For the clock input signal that will be used
To set up the sampling clock
Automatically sets the sampling position
To automatically adjust sampling positions
Run simultaneously
To run eye finder repetitively
Choose the labels that you wish to run eye finder on
To view eye finder data as a stack of channels
To view eye finder data as a bus composite
To save/load eye finder data
Eye Finder Advanced Settings Dialog on
To manually adjust sampling positions
Eye finder data must be saved and loaded separately
To specify the trigger position
Either Timing Mode or State Mode
To set acquisition memory depth
You can also name analyzers in the Pod Assignment Dialog on
To name an analyzer
To turn an analyzer off or on
You can give more descriptive names to a logic analyzer
High-speed or high-bandwidth oscilloscope
Selecting the Eye Scan Mode
To select the eye scan mode
To select the eye scan mode speed configuration
To set up the eye scan mode reference clock
Formatting Labels for Logic Analyzer Probes
Format tab has activity indicators that show signal levels
To assign pods to the analyzer
To set up qualified eye scan measurements on
Capturing Data on 17 Channels in State Mode
To set pod threshold voltages
To set clock threshold voltages
To assign probe channels to labels
Label off
Maximum of 32 channels can be assigned to a label
To delete labels
Label
Signals
To import label names and assignments from a netlist
E5378A and E5380A probe types to be selectable
To assign label name Blue to channel 5 on pod A2
To import label definitions from an Ascii file
Label Definition File Format Examples
To change the label polarity
To export label definitions to an Ascii file
Channel 5 on pod A2, and channel 6 on pod A1
Changing the label polarity will have the following effects
To reorder bits in a label
Changing the label polarity does not affect
To display a label that was off
To turn labels off or on
To turn a label off
To turn a label on
Using the Logic Analyzer in Timing or State Mode
Using the Logic Analyzer in Timing or State Mode
Use trigger functions for basic measurements
Setting Up Triggers and Running Measurements
General
To select a trigger function
Using Trigger Functions
To specify a label pattern event Timing only
To specify a label edge event
To enter symbolic label values on Symbols Selector Dialog on
To compress a trigger function
To expand a trigger function
To copy trigger function libraries between systems
To load/unload trigger function libraries
To count time, states, or turn counting off
Using Other Trigger Features
If you chose Custom
To specify default storing
To assign pods to the analyzer on
Reduced by half in order to store the required time tags
To clear default storing changes
Acquisition option button and choose either On or Off
Default storing is initially on or off
Trigger tabs Default Storing subtab, select the At start
To insert a store action state mode on
To replace sequence levels
To insert/replace/delete sequence levels
To clear the trigger sequence on
To insert sequence levels
To cut/copy-and-paste sequence levels
Setting Up Triggers and Running Measurements
Example system14 Slot C Analyzer C has triggered
Trigger tab, select the Overview subtab
To restore default trigger settings
To view a picture of the trigger sequence
To clear the trigger sequence
To specify a time duration for events timing only
To specify a duration or occurrence count for events
Available
To insert a store action state mode
To insert timer actions/events
To insert a timer action
To insert a counter event
To insert a timer event
To insert counter actions/events
To insert a counter action
To insert flag actions/events
To insert a flag event
To drive the Port Out signal with a flag
To group events
To insert a reset occurrence counter action
To use named events
To insert a named event
Saving/Recalling Trigger Setups
To save a trigger setup
To give an event list a name
To start/stop measurements
To recall a trigger setup
Running Measurements
To clear the trigger save/recall list
Waiting for Trigger on
If nothing happens when you start a measurement
To stop a measurement
Select the Stop or Stop All button
To view the trigger status
To open Waveform or Listing displays
Displaying Captured Data
Search for particular data values captured on labels
Help volume
To use other display tools
Windows
Displaying Captured Data
Into parallel words which are easier to view and analyze
Analyzer help volume
Intermittent Data Errors Unwanted Triggers
If the captured data doesnt look correct
This situation will occur in these cases
If there are filtered data holes in display memory
To view symbolic values in a waveform display
To display symbols for data values
To view symbolic values in a listing display
Select the Cancel button
To cancel the display processing of captured data
100
You can use symbol names in place of data values when
Using Symbols
101
To reload object file symbols
To load object file symbols
102
Object file symbols are reloaded
To adjust symbol values for relocated code
104
To create user-defined symbols
Whose symbols you wish to relocate
To replace user-defined symbols
To load user-defined symbols
To enter symbolic label values
When entering label values in the trigger sequence
To delete user-defined symbols
General-Purpose Ascii GPA Symbol File Format on
To create an Ascii symbol file
106
Create the reader.ini file on your workstation or PC
Examples Example for Elf/Stabs
StabsType
ReadOnlyTicoffPage
AppendTicoffPage
Example for Ticoff
Example for Coff/Stabs using Ticoff reader
109
You can print captured data from display tool windows
Printing/Exporting Captured Data
111
Select the file name and automatic file sequencing options
Select the Read File button
Icon to view the imported data
To cross-trigger with another instrument
Cross-Triggering
112
113
When the logic analyzer drives the arm signal
114
Solving Logic Analysis Problems
To test the logic analyzer hardware
To test the logic analyzer hardware on
System help volume
Service Center for assistance
115
116
Saving and Loading Logic Analyzer Configurations
To save logic analyzer configurations
To load logic analyzer configurations
117
Using the Logic Analyzer in Eye Scan Mode
118
119
Setting Up and Running Eye Scan Measurements
Eye Scan tab lets you set up and run Eye Scan measurements
To select channels for the eye scan
Scan Settings Subtab on
To set the eye scan range and resolution
120
121
To quickly set up another measurement using the scale see
To run an eye scan measurement
To set advanced eye scan options
Advanced Subtab on
To set up qualified eye scan measurements
122
Memory device versus a memory controller
Requirements Signal Timing Burst Transfers
123
Before the clock edge to after it
Has adjustable sampling positions on each input channel
Burst
After the rising edge of the clock
Are supported
Clock cycle of the next burst
125
126
127
Be sure that the thresholds are set correctly
Display
For correct state mode acquisitions
Not already expanded
Start your target system and select Run Eye Finder
129
Now, set up eye scan mode
130
Select the Eye Scan tab Select the Qualifier subtab
131
Select the Qualify eye scan sampling using... button
To comment on the eye scan settings
To open the Eye Scan display
Displaying Captured Eye Scan Data
133
134
To select the channels displayed
Tool
Within the data captured on the bus
Eye Scan display window, select the Scale tab
To scale the Eye Scan display
Scale tab, you can
To use the scaling options
To open the Eye Scan display on
To quickly set up another measurement using the scale
To set Eye Scan display options
To clear the captured eye scan data
137
138
139
140
To change the Eye Scan color scale
Make measurements on the eye scan data on
Is zero by default
141
About the captured measurement data
To make measurements on the eye scan data
142
143
144
145
146
147
148
149
To display information about the eye scan data
Scroll bars to navigate through the information
Eye Scan display window, select the Info tab
150
Info tab, you can
151
To comment on the eye scan data
Saving and Loading Captured Eye Scan Data
Loading Logic Analyzer Configurations on
152
153
Sampling Tab on Format Tab on Trigger Tab on
154
Sampling tab lets you choose between the logic analyzers
Sampling Tab
155
156
Timing Mode
Conventional Transitional
Acquisition
Samples with transitions
How Samples are Stored in Transitional Timing
Will be stored
Period and other times more than two sample periods apart
State Speed
State Mode
158
159
Sampling Positions Dialog
File menu Lets you save/load eye finder data
Sampling Positions Tab
160
161
Label buttons
Display Area
Sampling Position
Cannot run the Eye Finder at this time
How the Selected Position Behaves
How the Suggested Position Behaves
XX% complete
163
Cannot run the Logic Analyzer at this time
Characterizer cannot be loaded
Complete Date
Select one or more labels in the Eye Finder Setup tab
165
Timeout N K clocks in 5 sec
This channel appears to be completely quiet
Two common possibilities exist
166
Run Eye Finder to characterize this channel
See individual channels for messages
Stable region extends beyond the limits of the display
Disk is probably full
Numerical value for the item XXX could not be read
Unsupported revision level AA.BB
Failed to open file for reading/writing Name
File Name already exists. Overwrite?
Invalid true/false flag
169
Eye Finder Setup Tab
170
Eye Finder Advanced Settings Dialog
171
File Info Tab
Save As
Eye Scan Mode
Reload
Save
173
Selecting the Eye Scan Mode on
Specify the logic analyzer pod and clock threshold voltages
Expander cards which cannot be used in the clock setup
Format Tab
Data
Pods
Pod Assignment Dialog
Name
Type
176
Trigger Tab
177
Trigger Functions Subtab
178
General Timing Trigger Functions
179
180
General State Trigger Functions
181
Find pattern1 eventually followed by pattern2
182
183
Advanced Trigger Functions
184
Searched for
Turbo State Trigger Functions
State Trigger Functions
Advanced pattern1 or pattern2
186
187
Half Channel State Trigger Functions
188
Settings Subtab
Count
Intermodule Control
This tab gives a picture of the trigger sequence
Overview Subtab
189
Group events
Default Storing Subtab
Event Specification List
At start Acquisition
Save/Recall Subtab
Status Subtab
191
192
Creating trigger function libraries
Multiple files
Symbols Tab
Two kinds of symbols are available
That you use to set up resource terms
194
Object file versions See Also
Matching Symbols
Symbols Selector Dialog
195
Offset By Option
Search Pattern
Address masking is done by the Align to x Byte option
Qualifies any address from 100C through 100F
Symbol File Formats
Align to x Byte Option
Byte option allows you to mask off an address
107 file
General-Purpose Ascii GPA Symbol File Format
198
Format
GPA Record Format Summary
199
Definitions in the file
Records
200
Last address of the section, in hexadecimal
Symbol representing the name of the section
Symbol representing the function name
First address of the section, in hexadecimal
202
You can specify symbols for variables using
Name of a file
Number of a line in the file, in decimal
203
Comments
Collapse Shows labels only Select All Selects all channels
Eye Scan Tab
Labels Subtab
Expand
Time
Scan Settings Subtab
Run Mode
Scan Range
206
Advanced Subtab
Custom
Short
Medium
Long
Names for
Qualifier Subtab
Qualification
Clock Edge to Sample
209
Comments Subtab
Calibration Messages
Calibration Tab
Calibration Instructions
Calibration Status
211
Error Messages
General Guidelines
Branch expression is too complex
212
213
Specific Guidelines 200 Mb/s State and all Timing Modes
214
If the following sequence does not compile
This one may
Specific Guidelines 400 Mb/s State Modes
215
Specific Guidelines 1250/1500 Mb/s State Mode
Specific Guidelines 800 Mb/s State Mode
216
217
Last sequence level calls goto next
Goto action specifies an undefined level
Hardware Initialization Failed
Possible Causes
Timing sampling mode, flags are are always available
Maximum of 32 Channels Per Label
Must assign another pod pair to specify actions for flags
No more Edge/Glitch resources available for this pod pair
220
Possible Solutions
No more Pattern resources available for this pod pair
Phrase some of the edges as patterns
Slow or Missing Clock
No Trigger action found in the trace specification
221
222
Trigger function initialization failure
223
Trigger inhibited during timing prestore
Trigger Specification is too complex
Then the approximate time is 32 seconds
Event
Combiner resource allocation guidelines
224
Misaligned boundaries for addresses
Waiting for Trigger
225
226
To save a trigger setup on
227
Specifications and Characteristics
Operating temperature 0 to 45 degrees C
Probes
E5378A Input Equivalent Circuit
E5378A Single-Ended Probe Specifications Characteristics
E5379A Differential Probe Specifications Characteristics
All specifications are marked by * asterisk
229
E5379A Input Equivalent Circuit
E5380A Input Equivalent Circuit
1500 Mb/s Sampling Mode Specifications and Characteristics
230
231
Characteristics
232
233
400 Mb/s Sampling Mode Specifications Characteristics
234
200 Mb/s Sampling Mode Specifications Characteristics
235
Conventional Timing Mode Specifications and Characteristics
Transitional Timing Mode Specifications and Characteristics
All specifications are marked by * asterisk
236
What is a Specification?
237
What is a Characteristic?
What is a Function Test?
Referred to as an operational accuracy calibration
238
239
Concepts
Conveyor Belt Analogy
Understanding Logic Analyzer Triggering
240
241
Conveyor belt analogy
Next Sequence Levels on
Summary of Triggering Capabilities
Sequence Levels
Next Summary of Triggering Capabilities on
243
Addr Data
244
Boolean Expressions
Next Ranges on
Branches
Edges
Ranges
Trigger Sequence for Module
Flags
Occurrence Counters and Global Counters
Next Flags on
An edge followed by an edge with a time limit
Timers
Next Timers on
An example trigger sequence to set up this measurement is
Needed
Default Storage
Storage Qualification
Next Storage Qualification on
250
Sequence Level Storage
251
Strategies for Setting Up Triggers
Next Strategies for Setting Up Triggers on
Trigger Functions
Pattern2 occurring immediately after Pattern1
Agilent 16715A trigger user interface
252
Store range until pattern occurs
Same trigger as If/Then statements
253
Next Document Your Trigger Sequences on
Setting Up Complex Triggers
Next Setting Up Complex Triggers on
Document Your Trigger Sequences
Inline documentation on an Agilent logic analyzer
Conclusions
Different parts of the trigger to describe how they work
Next Conclusions on
To accurately capture data on a bus
Understanding State Mode Sampling Positions
256
257
258
Window
259
Understanding Eye Scan Measurements
260
261
Measurements run simultaneously in parallel
Voltage resolution that can be set is 1 mV
Using the Logic Analyzer in Eye Scan Mode on
Are multiple logic analyzer cards in a module in this case
Asterisk * See edge terms, glitch, and labels
Glossary
263
264
Divided into 1K 64-state records
265
Debug mode See monitor
266
Ethernet address See link-level
267
268
269
Module/probe interconnect cable
Processor probe See emulation
By the channel width of the instrument
270
271
Measurements
272
273
274
275
Index
251
276
247
277
122
278
180
279
280
Label values, symbolic, 105 labels, 22
Positive logic
281
242
282
107
283
Wait for other machine to trigger
284
Publication Number 5988-9044EN January 1