Agilent Technologies 4294A Instruction Manual Page 118
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110 Chapter 5
Setting Measurement Conditions
Setting and Applying dc Bias
selected is displayed in the key label [] of the MEAS RANGE [ ] key.
NOTE If the message “CAUTION: DCBIAS OVERLOAD” (error number: 137) still appears
even when the dc bias range is set to 100 mA, the connected DUT requires a dc bias with a
current that exceeds the maximum dc bias current (100 mA) provided by the Agilent
4294A. In this case, decrease the dc bias voltage level to avoid the error.
Figure 5-15 Characteristics of Capacitance of Varactor Diode versus dc Bias Voltage
Softkey label Selected dc bias range
MEAS RANGE [1mA] 1 mA
MEAS RANGE [10mA] 10 mA
MEAS RANGE [100mA] 100 mA
- Operation Manual 9
- Notices 10
- Manual Printing History 10
- Safety Summary 11
- Safety Symbols 12
- Certification 13
- Warranty 13
- Limitation of Warranty 13
- Exclusive Remedies 14
- Assistance 14
- Typeface Conventions 14
- 4294A and how to 15
- Contents 17
- 1 Installation 25
- Incoming Inspection 26
- Power Source Requirements 28
- Power Cable 29
- 22 Chapter 1 30
- Installation 30
- Using the LAN Port 32
- Connecting the Keyboard 33
- Using a Rackmount Kit 34
- Option 1CM Rackmount Kit 35
- Environmental Requirements 36
- Instructions for Cleaning 36
- 2 Learning Operation Basics 37
- Required Equipment 38
- Preparing for a Measurement 39
- Turn ON the Power 40
- Connect the DUT 45
- [B] key to activate Trace B 46
- LIN key selected 46
- SPLIT ON off) 47
- Auto-scale the 48
- Auto-scale the q Trace 48
- Chapter 2 41 49
- Learning Operation Basics 49
- 2. Learning Operation Basics 49
- Results of Analysis 50
- Front Panel 52
- 1. ACTIVE TRACE block 53
- 2. MEASUREMENT Block 53
- 3. STIMULUS Block 54
- 4. ENTRY Block 54
- 5. MARKER Block 55
- 6. INSTRUMENT STATE Block 55
- 7. Softkeys 56
- 8. Color LCD Display 56
- 9. Power Switch 56
- 10. UNKNOWN Terminals 57
- Rear Panel 58
- [Trigger] 59
- 10. 24-bit I/O Port 60
- 11. Printer Port 60
- 12. External Monitor Terminal 60
- 13. GPIB Connector 60
- 14. Inlet (with a fuse box) 60
- Items Displayed on the LCD 61
- 5. Softkey Label Area 62
- 7. Marker Status Fields 63
- 9. Limit Line Test Fields 64
- DATA MEM– 67
- 21. Title Field 69
- 62 Chapter 3 70
- Connecting the Accessories 74
- Adapter Setting 75
- Adapter Selection 76
- SETUP key to 79
- PHASE COMP [DONE] 79
- LOAD [DONE] 80
- SETUP key to 82
- PHASECOMP[DONE] 82
- OPEN [-] key to start 84
- OPEN [DONE] 84
- SHORT [DONE] 85
- [Preset] key each time you 90
- [Preset] key; once it is 90
- Active trace Key stroke 91
- Trace B [B] 91
- Selecting Sweep Parameter 92
- 86 Chapter 5 94
- 88 Chapter 5 96
- Figure 5-4 Linear sweep 96
- MKR ® START 98
- MKR ® STOP 98
- MKR ® CENTER 98
- MKR D ® SPAN 99
- MKR ZOOM 99
- 92 Chapter 5 100
- Setting Sweep Range 100
- Figure 5-8 100
- [Source] key 103
- 96 Chapter 5 104
- 98 Chapter 5 106
- Selecting Sweep Direction 107
- Setting with sweep time 110
- Setting with sweep time delay 111
- Setting Oscillator Level 113
- OSC UNIT [VOLT] Voltage 114
- OSC UNIT [CURR] Current 114
- Setting and Applying dc Bias 115
- 5. Turning dc bias ON or OFF 117
- 6. Optimizing dc bias range 117
- [] of the MEAS RANGE [ ] key 118
- Single sweep 122
- Sweep by specified times 122
- Stopping sweep 123
- Preparing list sweep table 126
- 5 PRECISE 130
- AVERAGING on OFF Off 135
- AVERAGING ON off On 135
- POINT AVG on OFF Off 136
- POINT AVG ON off On 136
- 6 Calibration 137
- 4TP 1M).” 143
- 4294A is 144
- 4TP 2M).” 145
- 7mm 42942A).” 147
- Extended 149
- PROBE 42941A).” 151
- User Calibration 155
- CORRECTION on OFF Off 156
- CORRECTION ON off On 156
- Port Extension Compensation 158
- Fixture Compensation 159
- COMP POINT [USER] 163
- 7. Setting Up the Display of 165
- Measurement Results 165
- 1. Quality factor 166
- Auto-scaling the Trace 172
- COMPLEX Z-Y) 174
- SCALE FOR [DATA] Data trace 185
- SCALE FOR [MEMO] Memory trace 185
- Comparison or Calculation 187
- DATA and MEMORY 189
- DATA-MEMORY 189
- DATA/MEM 189
- DATA and MEMORY key) 190
- DATA - MEMORY key) 191
- DELTA % key) 191
- Subtracting an Offset Value 192
- Superimposing Multiple Traces 193
- 188 Chapter 7 196
- 192 Chapter 7 200
- Monitoring the dc Bias Level 201
- To: Pres s: 202
- Selecting the Phase Unit 205
- Hiding the Non-active Trace 207
- Splitting the Graph 208
- ALL INSTRUMENT or 209
- ALL INSTRUMENT 210
- HALF INSTR HALF BASIC 210
- ALL BASIC 210
- BASIC STATUS 210
- 204 Chapter 7 212
- 8. Analysis and Processing 219
- (delta marker) 225
- SEARCH LEFT 234
- SEARCH RIGHT 234
- SUB MKR key located on the 235
- SUB MKR key is equivalent to 237
- PEAK key 237
- 230 Chapter 8 238
- NEXT PEAK LEFT key 239
- Define the Peak 240
- Define peak sharpness 241
- Analyze trace bandwidth 244
- SEARCH IN 249
- SEARCH OUT 249
- MKR ON [DATA] 252
- MKR ON [MEMORY] Memory trace 252
- 246 Chapter 8 254
- Turning off the sub-markers 255
- Turning off the delta marker 255
- MKR ON off ON (displayed) 256
- A, B, C, D or E 258
- STATISTICS ON off On 262
- STATISTICS on OFF Off 262
- Set the limit line 264
- CLEAR LIST - yes (cancel) 269
- Conduct the limit line test 270
- BEEP FAIL ON off ON (beeps) 271
- Step 4. Press the 272
- + 1 kHz) 273
- - 10 degrees) 274
- Specify partial search range 275
- MKR ® MINIMUM 276
- MKR ® MAXIMUM 276
- MKRD ® SEARCH RNG 276
- [Preset] key 279
- 4294A through the HP 280
- Table 8-6 Data structure 285
- (part of trace A) 288
- Table 8-22 297
- PREV FILES 299
- NEXT FILES 299
- Directory name\ 299
- Recall the saved file 300
- FIXED COLOR 302
- IMAGE COLOR 302
- Functions 307
- Setting/Checking the Date 309
- Setting/Checking the Time 310
- BEEP DONE ON off On 312
- BEEP DONE on OFF Off 312
- BEEP WARN ON off On 312
- BEEP WARN on OFF Off 312
- Managing Files 313
- Copying a File 315
- Deleting a File or Directory 318
- FLASH MEMORY 319
- Setting/Checking the GPIB 321
- Setting/Checking the LAN 322
- Checking the MAC Address 326
- Checking the Firmware Version 327
- 322 Chapter 9 330
- Performance Characteristics 331
- Basic Characteristics 332
- Sweep Characteristics 336
- Measurement Time 337
- Trigger Function 337
- Adapter Setup 338
- Calibration 338
- Measurement Accuracy 338
- 344
- 340 Chapter 10 348
- Parameters Yo , Ep , and Zs 348
- 342 Chapter 10 350
- Display Functions 352
- Marker Functions 352
- Equivalent Circuit Analysis 353
- Limit Line Test 353
- Mass Storage 353
- Parallel Printer Port 353
- HP Instrument BASIC 354
- 8-Bit I/O Port 354
- LAN Interface 356
- General Characteristics 357
- External Monitor Output 358
- Operating Conditions 358
- Non-operating Conditions 359
- Other Specifications 359
- 352 Chapter 10 360
- Furnished Accessories 362
- A Manual Changes 363
- Manual Changes 364
- Change 1 365
- Miscellaneous Changes 366
- B Key Definitions 367
- Functions of hardkeys 368
- Table B-4 MARKER block 369
- Table B-6 ENTRY block 369
- [Meas] key 371
- 364 Appendix B 372
- Key Definitions 372
- [Format] key 373
- [Display] key 374
- Appendix B 367 375
- B. Key Definitions 375
- Table B-17 Title menu 376
- Appendix B 369 377
- 370 Appendix B 378
- Appendix B 371 379
- 372 Appendix B 380
- [Scale Ref] key 381
- 374 Appendix B 382
- Appendix B 375 383
- [Bw/Avg] key 384
- Appendix B 377 385
- [Cal] key 386
- Appendix B 379 387
- 380 Appendix B 388
- Appendix B 381 389
- 382 Appendix B 390
- [Sweep] key 391
- 384 Appendix B 392
- Appendix B 385 393
- 386 Appendix B 394
- Appendix B 387 395
- Appendix B 389 397
- [Trigger] key 398
- Appendix B 391 399
- [Marker] key 400
- Appendix B 393 401
- 394 Appendix B 402
- [Marker®] key 403
- 396 Appendix B 404
- [Search] key 405
- Table B-66 Peak (Peak) menu 406
- 400 Appendix B 408
- Appendix B 401 409
- [Utility] key 410
- Appendix B 403 411
- [System] key 412
- Appendix B 405 413
- 406 Appendix B 414
- Appendix B 407 415
- 408 Appendix B 416
- Appendix B 409 417
- 410 Appendix B 418
- Appendix B 411 419
- 412 Appendix B 420
- Appendix B 413 421
- 414 Appendix B 422
- [Local] key 423
- 416 Appendix B 424
- [Copy] key 425
- 418 Appendix B 426
- Appendix B 419 427
- 420 Appendix B 428
- [Save] key 429
- 422 Appendix B 430
- Appendix B 423 431
- 424 Appendix B 432
- Appendix B 425 433
- 426 Appendix B 434
- [Recall] key 435
- 428 Appendix B 436
- C Error messages 437
- 446 Appendix C 454
- Error messages 454
- WRONG I/O PORT DIRECTION 454
- D Initial Settings 455
- Appendix D 449 457
- Initial Settings 457
- Backed Up 457
- D. Initial Settings 457
- 450 Appendix D 458
- Appendix D 451 459
- 452 Appendix D 460
- Appendix D 453 461
- 454 Appendix D 462
- Index 455 463
- 456 Index 464
- Index 457 465
- 458 Index 466
- Index 459 467
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