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Logic Analyzer Concepts
The Analyzer Hardware
The Analyzer Hardware
This section describes the theory of operation for the logic analyzer
and describes the self-tests. The information in this section is to help
you understand how the logic analyzer operates and what the self-tests
are testing. This information is not intended for component-level
repair.
The block-level theory is divided into two parts: theory for the logic
analyzer and theory for the acquisition boards. A block diagram is
shown with each theory.
- Agilent Technologies 1670G 1
- Series Logic Analyzers 1
- Logic Analyzer Features 2
- Documentation Options 3
- In This Book 4
- Contents 10
- Logic Analyzer 23
- Logic Analyzer Overview 25
- Analyzer 26
- Shift Key 27
- To make a measurement 29
- Assign pods 30
- Set up analyzers 30
- Set modes and clocks 30
- Group bits under labels 30
- Set up trigger 31
- Define terms 31
- Configure Arming Control 31
- Set up trigger sequence 31
- Run measurement 32
- Select single or repetitive 32
- Gather data 32
- View data 33
- Search for patterns 33
- Correlate data 33
- Make measurements 34
- Connecting Peripherals 35
- To connect a mouse 37
- To connect a keyboard 38
- To connect to an GPIB printer 39
- To connect to a controller 44
- Using the Logic Analyzer 45
- Accessing the Menus 47
- To access the System menus 48
- 3 Select the menu field 49
- To access the Analyzer menus 50
- Using the Analyzer Menus 52
- To create a symbol 55
- To compare two listings 63
- The Inverse Assembler 65
- Using the Trigger Menu 69
- Specifying a Basic Trigger 71
- 2 Select a term 72
- To define a term 74
- Term Selection Pop-up Menu 76
- Changing the Trigger Sequence 77
- To add sequence levels 78
- Sequence Level Pop-up Menu 79
- To change trigger functions 80
- 3 Select Done 82
- To arm another instrument 84
- Managing Memory 89
- (state only) 90
- To set the memory length 91
- With interleaved tags 92
- 5 Select Done 93
- 4 Select Done 94
- Triggering Examples 102
- "F_EXIT" occurs 102
- MEM_SEL 111
- REQ and ACK 116
- To detect bus contention 117
- Cross-Arming Trigger Examples 118
- To detect a glitch 122
- Count Time is set 127
- Special Displays 128
- To interleave trace lists 129
- File Management 133
- To save a configuration 136
- To load a configuration 137
- 5 Select Execute 138
- To save a screen's image 140
- To load additional software 141
- To transfer files using ftp 143
- Using the Oscilloscope 145
- Calibrating the oscilloscope 147
- Self Cal menu calibrations 149
- Oscilloscope Common Menus 152
- Autoscale 154
- Time base 156
- The Scope Channel Menu 157
- Probe field 158
- Coupling field 158
- Preset field 159
- The Scope Display Menu 160
- Accumulate mode 161
- Connect Dots field 162
- Grid field 162
- Display Options field 163
- The Scope Trigger Menu 164
- Edge trigger mode 165
- Immediate trigger mode 166
- Level field 167
- Source field 169
- Slope field 169
- Count field 170
- Auto-Trig field 171
- When field 172
- The Scope Marker Menu 176
- T Marker value display 177
- Set on field 180
- Type field 180
- Occur field 181
- Statistics field 181
- Run Until Time X-O field 182
- Less Than field 182
- Voltage Markers options 185
- Va Volts field 186
- Va to Vb field 186
- Center Screen Field 186
- Channel Label field 187
- The Scope Auto Measure Menu 188
- Top and base voltages 191
- Measurement algorithms 192
- Using the Pattern Generator 195
- To set up the configuration 197
- To build a label 199
- Sequence menu 200
- SEQUENCE START 202
- 2 Select the INST field 205
- To build a user macro 207
- To modify a function name 208
- To edit a function 208
- To enter or modify parameters 211
- To build a User Symbol Table 212
- To store a configuration 215
- To use Autoroll 217
- The Format Menu 218
- Clock Out Delay 220
- Vector Output Mode 220
- The Sequence Menu 222
- INIT and MAIN Sequences 223
- The Step Count Field 224
- Instructions 227
- Data Field 230
- Autoroll 230
- Memory Used 230
- The User Macros Menu 231
- Add/Delete Function 232
- Using Parameters 232
- Loading ASCII Files 233
- ASCII File Commands 234
- <char_count> 236
- Vector Data 237
- FORMat:xxx 239
- Format Specification 241
- Pod Numbering 242
- Logic Analyzer Reference 243
- Oscilloscope option 245
- Pattern generator option 245
- Probing Options 248
- General-Purpose Probing 249
- The Termination Adapter 250
- Probe Tip Assemblies 251
- Probe and Pod Grounding 252
- Probe Leads 252
- Grabbers 253
- Probe Cable 253
- Minimum Signal Amplitude 253
- Maximum Probe Input Voltage 254
- Pod Thresholds 254
- Assembling the probing system 255
- Connecting Probe Tip Assembly 256
- Installing Probe Leads 257
- Connecting Grabbers to Probes 258
- Probe Inputs 259
- Calibration Outputs 259
- (unterminated) 262
- Keyboard Shortcuts 267
- Entering data into a menu 268
- Using the keyboard overlays 269
- Common Menu Fields 270
- Print field 271
- Print Disk 272
- Print All 272
- Print Partial 272
- Run/Stop field 273
- Roll fields 274
- Disk Drive Operations 275
- Disk operation safeguards 277
- Autoload 278
- Load and Store 280
- Default Setup 282
- Controller interface 282
- Printer interface 282
- The GPIB interface 283
- The RS-232-C interface 284
- The Centronics interface 285
- The Ethernet LAN interface 286
- LAN Port 287
- Analyzer IP Address 287
- Gateway IP Address 287
- File Timeout 287
- Analyzer name 287
- Help with 288
- Show LAN Connections 288
- Ethernet Statistics 288
- System Utilities 289
- Update FLASH ROM field 290
- Display Color Selection 292
- The Color Model 293
- Luminosity Fields 294
- Illegal configuration 296
- The Analyzer Format Menu 297
- State acquisition modes 298
- Timing acquisition modes 299
- Acquisition modes 300
- Clock Inputs Display 301
- Pod clock field (State only) 302
- Demultiplex 304
- Clock selections 305
- Setup/Hold field 307
- Symbols field 308
- Base field 309
- Symbol Width field 309
- Symbol name field 309
- Label fields 310
- Label polarity fields 311
- The Analyzer Trigger Menu 312
- Modify Trigger field 313
- Basic Functions 1. Find edge 314
- Modifying the user function 319
- Using storage qualification 320
- Using the Occurrence Counters 321
- Using the timer 321
- Branching 321
- Resource terms 323
- Global timers 1 and 2 324
- Using Preset Values 325
- Assigning Bit by Bit 325
- Combination of terms 326
- Arming Control field 327
- Acquisition Control field 329
- Delay (Timing only) 330
- Count field (State only) 331
- The Listing Menu 332
- Timing analyzer markers 333
- Stop measurement field 333
- Statistics markers 333
- The Waveform Menu 334
- Delay field 335
- Waveform label field 335
- Waveform display 337
- The Mixed Display Menu 338
- Time-correlated displays 339
- The Chart Menu 340
- Min and Max scaling fields 341
- Markers/Range field 341
- Axis Control field 342
- Rescale field 343
- The Compare Menu 344
- Reference Listing field 345
- Difference Listing field 345
- Find Error field 347
- Mask field 348
- Bit Editing field 348
- Software 349
- Operating characteristics 353
- State Overview 353
- State Histogram 354
- Time Interval 354
- Getting started 355
- Default SPA Menu 356
- SPA measurement processes 357
- Selecting and changing labels 358
- State Overview mode 359
- State Overview example 361
- State Histogram mode 362
- State Histogram example 365
- Time Interval mode 366
- Time Interval example 369
- SPA State Overview 370
- SPA State Histogram 371
- SPA Time Interval 372
- Using State Histogram mode 376
- SPA State Histogram Menu 377
- Using Time Interval mode 379
- Specifying an event 379
- SPA Time Interval Menu 380
- Using SPA with other features 383
- Using SPA in Group Runs 384
- Logic Analyzer Concepts 385
- The File System 387
- Directories 388
- File types 389
- Filename endings 390
- The Trigger Sequence 391
- Analyzer resources 395
- Timing analyzer 400
- State analyzer 400
- Logic Analyzers 401
- The Analyzer Hardware 403
- 1670G-series analyzer theory 404
- CPU board 405
- System memory 405
- Keypad and knob interface 405
- GPIB interface 406
- RS-232-C interface 406
- Power supply 406
- LAN Interface 407
- Logic acquisition board 408
- Comparators 409
- Acquisition 410
- Threshold 411
- Oscilloscope board theory 412
- Oscilloscope acquisition 413
- Analog Interface 416
- Loop Register 417
- Output Driver 418
- Clock Circuit 418
- CPU Interface 419
- Self-tests description 420
- Analyzer Problems 423
- Unwanted triggers 424
- Capacitive loading 425
- No trace list display 425
- Analysis Probe Problems 426
- Slow clock 427
- Erratic trace measurements 428
- Inverse Assembler Problems 429
- Error Messages 432
- See Also 436
- Specifications 437
- General Information 438
- Channel count: 442
- ----------------------------= 443
- State analysis 445
- Timing analysis 446
- Triggering 446
- Measurement functions 447
- Indicators 447
- Data entry/display 448
- Marker functions 449
- Auxiliary power 449
- Triggering: 451
- Trigger Modes: 451
- Operating environment 452
- Operator’s Service 453
- Preparing For Use 455
- To inspect the logic analyzer 456
- To apply power 456
- To clean the logic analyzer 457
- To test the logic analyzer 457
- Troubleshooting 458
- To use the flowcharts 459
- Troubleshooting Flowchart 2 460
- To check the power-up tests 461
- To run the self-tests 462
- Repetitive 467
- Repetitive Run 469
- To test the auxiliary power 471
- Section 2 473
- Introducing the LAN Interface 475
- Supported Protocols 477
- LAN section overview 478
- To connect to your network 481
- System External I/O menu 482
- LAN Settings menu 483
- To mount the logic analyzer 486
- System Using the LAN 489
- Control User vs. Data User 490
- Map Network Drive 494
- Using the Mouse and Keyboard 498
- Settings field 499
- To close the interface 504
- To load the custom fonts 505
- Additional Information 508
- PostScript formats 510
- To copy raw measurement data 512
- An example system.txt file: 515
- An example frame.txt file: 516
- An example mount.txt file: 516
- 1 Set up the configuration 517
- Dynamic Configuration Files 517
- To restore configurations 518
- Using the LAN 519
- The Command Parser Socket 520
- LAN Concepts 527
- Analyzer Directory Structure 530
- Dynamic files 532
- Controller Connection 533
- X-Window Box 533
- LAN Settings 533
- Time Zone Field 534
- Assess the problem 537
- Packets routinely lost 538
- Status Number 548
- Network Status Information 551
- Solutions to Common Problems 553
- If your X Window looks odd 555
- 3 Set the file time out 556
- If all else fails 558
- Getting Service Support 559
- Symbol Utility 561
- Symbol Utility Introduction 563
- Supported Symbol File Formats 565
- Format Menu 573
- OMF Symbol Load Menu 574
- To Access the Symbol Browser 575
- OMF symbol as a trigger term 576
- Using the Symbol Utility 577
- To generate a symbol file 578
- To Load a Symbol File 579
- OMF symbols 582
- To Trigger on a Symbol 583
- Loaded into the System 585
- The OMF Symbol File Load Menu 589
- OMF File Field 590
- Drive Field 590
- Label Field 591
- Module Field 591
- Load Field 592
- Current Loaded Files Field 593
- Section Relocation Option 594
- Set Absolute Section Location 595
- Offset This Section 595
- Offset All Sections 595
- The OMF Symbol Browser Menu 596
- Find Field 598
- Question mark wildcard (?) 599
- Browse Results Display 600
- Align to xx Byte Option 601
- Offset Option 602
- Context Display 603
- Address Display 603
- Symbol Mode Field 604
- Creating a GPA Symbol File 606
- GPA File Format 607
- Sections 609
- Functions 611
- Variables 612
- Source Line Numbers 613
- Start Address 614
- Comments 614
- DECLARATION OF CONFORMITY 625
- Product Regulations 626
- EMC Directive 89/336/EEC 626
- ICES/NMB-001 626
- Agilent Technologies 627
- P.O. Box 2197 627
- 1900 Garden of the Gods Road 627
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