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Hodnocené. / 5. Na základě hodnocení zákazníků
150 VEE User’s Manual
3 Easy Ways to Control Instruments Chapter
Figure 94 A Direct I/O Transaction
In most cases, the process will be the same for sending text
commands to instruments. However, there are instruments that
specify characters sent at the end of each command or at the
end of a group of commands. You need to get this information
from the instrument documentation, then include it in the
Direct I/O Configuration dialog box.
Sending an Expression List to an Instrument
In some cases, you may want to send an expression list to an
instrument. For example, you may want to loop through a
number of frequencies in the Function Generator. To do so
using a Direct I/O Transaction, you would use a variable for the
frequency in an expression list, and add a data input for that
variable to the Direct I/O object. The following steps describe
how to send an expression list to an instrument.
1 Place a second Direct I/O object for the HP3325B in the Main
window. Double- click in the transaction area to get the I/O
Transaction dialog box.
You can use all of the defaults except for the command string.
In this case, use the format "FR", <frequency>, "HZ". This is an
Expression List, each expression being separated by
commas. The frequency is represented by variable A, which
will be a data input to the Direct I/O object.
2 Click on the input field for command strings and type
"FR",A,"HZ". (For example, if A were 100, VEE would send
the string "FR100HZ".) Click OK. Notice that VEE
automatically adds a data input pin labeled A.
- Agilent VEE Pro 1
- VEE Pro User’s Guide 3
- Table of Contents 5
- 6 VEE User’s Guide 10
- VEE User’s Guide 7 11
- 8 VEE User’s Guide 12
- VEE User’s Guide 9 13
- 10 VEE User’s Guide 14
- VEE User’s Guide 11 15
- 12 VEE User’s Guide 16
- VEE User’s Guide 13 17
- 14 VEE User’s Guide 18
- Table of Figures 19
- 2 VEE User’s Guide 20
- VEE User’s Guide 3 21
- 4 VEE User’s Guide 22
- VEE User’s Guide 5 23
- Introduction 29
- Overview of Agilent VEE 31
- Learning about Agilent VEE 40
- MATLAB Script Overview 42
- About Full-Featured MATLAB 43
- Obtaining Agilent VEE Support 44
- 18 VEE Pro User’s Guide 46
- Environment 47
- Interacting with Agilent VEE 50
- Starting Agilent VEE 51
- The Agilent VEE Window 51
- Getting Help 53
- What’s New in VEE Definition 55
- Working with Objects 57
- Changing Object Views 59
- Selecting an Object Menu 61
- Moving an Object 62
- Copying an Object 64
- Deleting an Object 64
- Pasting an Object 64
- Selecting Several Objects 67
- Copying Multiple Objects 68
- Editing Objects 69
- Moving the Entire Work Area 71
- Clearing the Work Area 72
- Changing Default Preferences 72
- Pin Type .Description 74
- Adding a Terminal 76
- Editing Terminal Information 77
- Deleting a Terminal 79
- Running a Program 82
- Changing Object Properties 83
- Printing the Screen 86
- Saving a Program 87
- How Agilent VEE Programs Work 93
- Chapter Checklist 100
- Overview 103
- General Techniques 104
- Input, and in the 106
- Lab 2-3: Using Data Files 113
- OK in the I/O Transaction 114
- Using Data Types 120
- Using Data Shapes 121
- Using the Formula Object 122
- Using Online Help 125
- Do I... ⇒ Use the 127
- Showing Data Flow 128
- Showing Execution Flow 130
- Examining Data on a Line 130
- Examining Terminals 132
- Using Breakpoints 133
- Resolving Errors 135
- Using the Call Stack 136
- Stepping Through a Program 141
- Practice Programs 143
- 124 VEE User’s Guide 152
- 126 VEE User’s Guide 154
- Direct I/O Object 158
- VXIplug&play Drivers 159
- 132 VEE User’s Manual 160
- Configuring an Instrument 161
- VEE User’s Guide 141 169
- Using a Panel Driver 170
- On Your Own 174
- Using Direct I/O 175
- Using PC Plug-in Boards 185
- ComputerBoards PC Plug-ins 186
- VEE User’s Guide 161 189
- 162 VEE User’s Manual 190
- Other I/O Features 196
- 170 VEE User’s Manual 198
- Data Type Description 202
- UInt8 Unsigned byte 0 to 255 202
- VEE User’s Guide 175 203
- ⇒ Default Preferences 203
- ⇒ Trig Mode setting 203
- 176 VEE User’s Guide 204
- Using Built-In Math Objects 206
- VEE User’s Guide 181 209
- Working with Data Types 220
- 194 VEE User’s Guide 222
- Displaying Test Data 223
- 196 VEE User’s Guide 224
- Table 1 5 Displays 224
- Displaying a Waveform 225
- Changing the X and Y Scales 226
- For Additional Practice 228
- 202 VEE User’s Guide 230
- I/O Transaction Format 240
- Lab 5-4: Using Records 251
- Building a Record 251
- Getting a Field From a Record 253
- Setting a Field in a Record 255
- Lab 5-5: Using DataSets 260
- Element Description 268
- VEE User’s Guide 245 273
- VEE User’s Guide 265 293
- Entry Description 301
- 278 VEE User’s Guide 306
- Using .NET with VEE 307
- What is .NET? 309
- VEE and the .NET Framework 310
- .NET Assembly References 311
- 7 Using .NET with VEE 312
- Using .NET with VEE 7 317
- VEE User’s Guide 289 317
- Programming Practices 321
- VEE User’s Guide 297 325
- Calling an Instance Method 328
- .NET Programming Tips 329
- .NET and IVI Drivers 339
- Assemblies 341
- Distributing the VEE Runtime 342
- VEE and .NET Security 343
- .NET Terminology 344
- Shared or Static Members 345
- Instance Member 345
- Reference 345
- Using a System Command 352
- Using Agilent VEE Functions 357
- Using Functions 360
- Creating a UserFunction 362
- Editing a UserFunction 364
- Merging Agilent VEE Programs 386
- Test Sequencing 389
- 10 Test Sequencing Chapter 392
- Using the Sequencer Object 393
- Lab 10-1: Configuring a Test 394
- Test Sequencing Chapter 10 397
- VEE User’s Guide 369 397
- VEE User’s Guide 371 399
- Change to random() 401
- Accessing Logged Test Data 402
- Passing Data in the Sequencer 405
- Property Description 415
- DataShape Set to 1D Array 415
- Using Operator Interfaces 425
- Colors, Fonts, and Indicators 431
- Graphic Images 432
- VEE User’s Guide 407 435
- Selecting Screen Colors 443
- Creating a Status Panel 445
- 418 VEE User’s Guide 446
- Lab 11-1: Using Menus 447
- ShowTitleBar False 457
- EditEnabled False 457
- 440 VEE User’s Guide 468
- VEE User’s Guide 447 475
- Using Dynamic Link Libraries 481
- An Example Using a DLL 483
- Execute Program Object 487
- Compiled Functions 487
- Synchronous execution 487
- Agilent VEE Execution Modes 488
- The Agilent VEE Compiler 489
- Changing the Execution Mode 489
- The Agilent VEE Profiler 496
- VEE User’s Guide 469 497
- Web-enablement Technologies 503
- 478 VEE User’s Guide 506
- General Guidelines and Tips 507
- Web Server Dialog Box 509
- 494 VEE User’s Guide 522
- 496 VEE User’s Guide 524
- Additional Lab Exercises 526
- Apple Bagger 527
- Test ing N um bers 529
- Collecting Random Numbers 533
- Random Number Generator 536
- Using Masks 538
- Using Strings and Globals 542
- Optimizing Techniques 544
- UserObjects 546
- Appendix 547
- VEE User’s Guide 519 547
- Agilent VEE UserFunctions 549
- 530 VEE User’s Guide 558
- Key Points 558
- AnotB are separate, so 560
- Working with Files 561
- Manipulating Records 563
- Thread): 582
- Glossary 583
- Numerics 591
- 564 VEE User’s Guide 592
- VEE User’s Guide 565 593
- Library, 344 594
- VEE User’s Guide 567 595
- 568 VEE User’s Guide 596
- VEE User’s Guide 569 597
- 570 VEE User’s Guide 598
- VEE User’s Guide 571 599
- 572 VEE User’s Guide 600
- VEE User’s Guide 573 601
- 574 VEE User’s Guide 602
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