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(TDR) you may feel more comfortable with step response, as the
displays are similar.
The lowpass-step response for a resistive impedance is a positive level
shift for R>Z
0
and a negative level shift for R<Z
0
. The height of the
response is equal to the reflection coefficient
r=
-
+
RZ
RZ
0
0
The step response for a shunt capacitance is a negative peak, and for a
series inductance it is a positive peak (Figure 8-3).
An example of using the lowpass-step response is cable-fault location.
In the frequency domain, a cable with a fault exhibits a much worse
match than a good cable. Using lowpass-step response, both the
location of the discontinuity and the information about its type are
available (Figure 8-4).
In the above example, the dip in the display shows the
shunt-capacitive response caused by a crimp in the cable. The
response at the end of the cable shows the step-up that is typical of an
open (Figure 8-3).
The MS462XX bandpass mode gives the response of the DUT to an
RF-burst stimulus. Two types of response are available: impulse and
phasor-impulse. An advantage of the bandpass mode is that any
frequency range can be used. Use this mode with devices that do not
have a dc or low-frequency path.
TIME TIME DOMAIN
DOMAIN MEASUREMENTS
MS462XX OM 8-5
LOWPASS STEP RESPONSE
l
TDR Measurement
l
Location of Discontinuities
l
Information on Type of Discontinu
-
ities
CIRCUIT ELEMENTS
R>Z
O
SHUNT C
SERIES L
IMPEDANCE
O
R<Z
11
S REAL
Lowpass Step Response
Figure 8-3. Lowpass-Step Response
40.000cm
0.000mm
1
3
CABLE
2
OPEN
Figure 8-4. Example of Lowpass-Step Response
BANDPASS MODE
l
Calculates Impulse or
Phasor-Impulse Response
l
Uses Any Frequency Range
l
Used When Device Does Not Have
a DC or Low-Frequency Path
- OPERATION MANUAL 3
- TIP TO GET STARTED QUICKLY 3
- Safety Symbols 7
- For Safety 8
- Static Safety 10
- Narrative Table of Contents 11
- Table of Contents 13
- Table of Contents (Continued) 14
- Chapter 1 19
- General Information 19
- EXTERNAL GENERAL 22
- INTERFACES INFORMATION 22
- GENERAL PRECISION 23
- INFORMATION COMPONENT KITS 23
- 1-8 PRECISION COMPONENT 24
- 1-10 PERFORMANCE 26
- 1-11 PREVENTIVE 27
- CONVENTIONS GENEERAL 28
- INFORMATION 28
- Chapter 2 29
- Installation 29
- 2-4 GPIB SETUP AND 32
- 2-5 SYSTEM GPIB 33
- 2-6 ETHERNET SETUP AND 33
- 2-7 EXTERNAL MONITOR 34
- 2-8 RACK MOUNT 34
- 2-9 PREPARATION FOR 35
- SERVICE INSTALLATION 36
- INSTALLATION SERVICE 37
- Chapter 3 39
- Network Analyzers 39
- A Primer 39
- TERMINATION 42
- NETWORK ANALYZERS, NETWORK 43
- A PRIMER ANALYZERS 43
- NETWORK NETWORK ANALYZERS 44
- ANALYZERS A PRIMER 44
- MS462XX OM 3-7 45
- 3-8 MS462XX OM 46
- Chapter 4 51
- Front Panel Operation 51
- FRONT PANEL FRONT PANEL 54
- KEY DESCRIPTIONS OPERATION 54
- OPERATION KEY DESCRIPTIONS 55
- 4-3 SOFT-KEY MENUS 56
- FRONT PANEL APPL 57
- APPL FRONT PANEL 58
- MEAS FRONT PANEL 70
- FRONT PANEL MEAS 71
- DISPLAY FRONT PANEL 78
- FRONT PANEL DISPLAY 79
- MARKER FRONT PANEL 100
- KEY MENUS OPERATION 100
- FRONT PANEL MARKER 101
- OPERATION KEY MENUS 101
- FREQ FRONT PANEL 112
- FRONT PANEL FREQ 113
- FRONT PANEL SWEEP 115
- SWEEP FRONT PANEL 116
- POWER FRONT PANEL 120
- FRONT PANEL POWER 121
- FRONT PANEL CONFIG 127
- CONFIG FRONT PANEL 128
- 4-15 START PRINT KEY 137
- UTILITY FRONT PANEL 138
- FRONT PANEL UTILITY 139
- 4-17 HARD COPY KEY 158
- FRONT PANEL HARD COPY 159
- HARD COPY FRONT PANEL 160
- FRONT PANEL DEFAULT 165
- 4-19 SAVE/RECALL KEY 166
- FRONT PANEL SAVE/RECALL 167
- SAVE/RECALL FRONT PANEL 168
- FRONT PANEL SEQ 171
- SEQ FRONT PANEL 172
- FRONT PANEL CAL 179
- CAL FRONT PANEL 180
- AVG FRONT PANEL 232
- FRONT PANEL AVG 233
- Place template here 234
- Function Keys 234
- Chapter 5 235
- Error and Status 235
- Messages 235
- ERROR ERROR AND STATUS 238
- MESSAGES MESSAGES 238
- ERROR AND STATUS ERROR 239
- Chapter 6 249
- Data Displays 249
- 6-2 DISPLAY MODES AND 251
- DISPLAY MODES DATA 252
- AND TYPES DISPLAYS 252
- DATA DISPLAY MODES 253
- DISPLAYS AND TYPES 253
- FREQUENCY DATA 260
- MARKERS DISPLAYS 260
- DATA LIMITS 261
- DISPLAYS 261
- DATA DISPLAY DATA 262
- CONTROLS DISPLAYS 262
- DATA DATA DISPLAY 263
- DISPLAYS CONTROLS 263
- 6-6 DATA DISPLAY 264
- DATA HARD COPY 265
- DISPLAYS AND DISK OUTPUT 265
- 6-7 HARD COPY AND DISK 266
- HARD COPY DATA 268
- AND DISK OUTPUT DISPLAYS 268
- Chapter 7 271
- Measurement Calibration 271
- DISCUSSION CALIBRATION 274
- CALIBRATION DISCUSSION 275
- 7-4 MEASUREMENT 283
- 7-14 MS462XX OM 284
- MS462XX OM 7-15 285
- 7-16 MS462XX OM 286
- MS462XX OM 7-17 287
- 7-18 MS462XX OM 288
- MEASUREMENT STANDARD 2-PORT 289
- CALIBRATION (OSL) CALIBRATION 289
- STANDARD 2-PORT MEASUREMENT 290
- (OSL) CALIBRATION CALIBRATION 290
- 7-6 TRANSMISSION AND 293
- 7-24 MS462XX OM 294
- MS462XX OM 7-25 295
- 7-7 FOUR-PORT 296
- 7-8 LRL/LRM CALIBRATION 297
- LRL/LRM MEASUREMENT 298
- CALIBRATION CALIBRATION 298
- MEASUREMENT LRL/LRM 299
- 7-10 BALANCED 304
- 7-11 FLEXIBLE 304
- 7-9 TRM CALIBRATION 304
- Chapter 8 309
- Time Domain 309
- TIME DOMAIN TIME 312
- MEASUREMENTS DOMAIN 312
- TIME TIME DOMAIN 313
- DOMAIN MEASUREMENTS 313
- 8-3 OPERATING TIME 316
- TIME OPERATING 317
- DOMAIN TIME DOMAIN 317
- OPERATING TIME 318
- TIME DOMAIN DOMAIN 318
- WINDOWING TIME 320
- TIME GATING 321
- GATING TIME 322
- Chapter 9 323
- Power Supply 324
- AutoCal Module 324
- Calibration Coefficients 324
- 9-3 CALIBRATIONS 326
- AUTOCAL DEFINITIONS 327
- PHYSICAL SETUP AUTOCAL 328
- 9-6 CHARACTERIZATION 329
- 9-7 USING AUTOCAL 329
- USING AUTOCAL AUTOCAL 330
- AUTOCAL USING AUTOCAL 331
- 9-8 4-PORT AUTOCAL 332
- AUTOCAL 4-PORT AUTOCAL 333
- 4-PORT AUTOCAL AUTOCAL 334
- 9-9 PIN DEPTH 338
- MS462XX OM 9-17/9-18 339
- Chapter 10 341
- Operational Checkout 341
- Procedures 341
- SELF OPERATIONAL CHECKOUT 344
- TEST PROCEDURES 344
- 10-5 MS462XA/B 345
- PARAMETERS TEST PROCEDURES 346
- PROCEDURES PARAMETERS TEST 347
- 10-6 MS462XA/B HIGH 350
- MS462XX OM 10-11 351
- 10-12 MS462XX OM 352
- MS462XX OM 10-13 353
- LEVEL NOISE TEST PROCEDURES 354
- PROCEDURES LEVEL NOISE TEST 355
- 10-16 MS462XX OM 356
- 10-7 MS462XC SYSTEM 357
- DYNAMIC RANGE TEST PROCEDURES 358
- PROCEDURES DYNAMIC RANGE TEST 359
- Chapter 11 361
- Calibration Kits 361
- KIT CALIBRATION 364
- CONTENTS KITS 364
- MS462XX OM 11-5 365
- MS462XX OM 11-7 367
- MS462XX OM 11-9 369
- 11-4 PRECAUTIONS FOR 370
- CALIBRATION PRECAUTIONS FOR 371
- KITS USING CONNECTORS 371
- 11-5 CLEANING 372
- W A T E R 373
- Appendix A 375
- Sequence Operation 375
- A-5 KEYS OPERATE 378
- SEQUENCE SEQUENCE 379
- OPERATIONS CREATION 379
- CREATION OPERATIONS 380
- OPERATIONS MODIFICATION 381
- A-8 SEQUENCE 382
- OPERATIONS EXECUTION 383
- A-10 DISPLAY MENU 384
- OPERATIONS REMOVAL 385
- A-14 MULTIPLE SEQUENCE 386
- A-15 SUB-SEQUENCE 387
- A-16 SUB-SEQUENCE 388
- SEQUENCE SUBSEQUENCE CALLING 389
- OPERATIONS BY LIMIT TESTING 389
- A-17 LOOP COUNTER 390
- MS462XX OM A-17 391
- A-18 TTL OUTPUT FOR 392
- A-19 TTL INPUT CONTROL 393
- A-20 BNC TTL OUTPUT 394
- SEQUENCE BNC TTL OUTPUT 395
- OPERATIONS CONTROL STATEMENT 395
- A-22 NESTING GOSUB 396
- SEQUENCE NESTING GOSUB 397
- OPERATIONS SEQUENCES 397
- A-23 OPERATOR 398
- SEQUENCE OPERATOR 399
- OPERATIONS MESSAGES 399
- A-24 DUMP A SEQUENCE 400
- A-25 SAVING A SEQUENCE 400
- Appendix B 401
- Rear Panel Connectors 401
- B-4 MS462XX OM 404
- REAR PANEL MS462XX REAR 405
- CONNECTORS PANEL 405
- MS462XX REAR REAR PANEL 406
- PANEL CONNECTORS 406
- Appendix C 415
- Performance 415
- Specifications 415
- Appendix D 417
- Soft-Key Menu Maps 417
- 10 MHz-6 GHz 418
- D-4 MS462XX OM 420
- MS462XX OM D-5 421
- D-6 MS462XX OM 422
- MS462XX OM D-7 423
- D-8 MS462XX OM 424
- MS462XX OM D-9 425
- D-10 MS462XX OM 426
- MS462XX OM D-11 427
- D-12 MS462XX OM 428
- MS462XX OM D-13 429
- D-14 MS462XX OM 430
- MS462XX OM D-15 431
- D-16 MS462XX OM 432
- MS462XX OM D-17 433
- D-18 MS462XX OM 434
- MS462XX OM D-19 435
- D-20 MS462XX OM 436
- MS462XX OM D-21 437
- D-22 MS462XX OM 438
- MS462XX OM D-23 439
- D-24 MS462XX OM 440
- MS462XX OM D-25 441
- D-26 MS462XX OM 442
- MS462XX OM D-27 443
- D-28 MS462XX OM 444
- MS462XX OM D-29 445
- D-30 MS462XX OM 446
- MS462XX OM D-31 447
- D-32 MS462XX OM 448
- MS462XX OM D-33 449
- D-34 MS462XX OM 450
- MS462XX OM D-35 451
- D-36 MS462XX OM 452
- MS462XX OM D-37 453
- D-38 MS462XX OM 454
- MS462XX OM D-39 455
- D-40 MS462XX OM 456
- MS462XX OM D-41 457
- D-42 MS462XX OM 458
- MS462XX OM D-43 459
- D-44 MS462XX OM 460
- MS462XX OM D-45 461
- D-46 MS462XX OM 462
- MS462XX OM D-47 463
- D-48 MS462XX OM 464
- Subject Index 465
- D SUBJECT INDEX 466
- SUBJECT INDEX G 467
- N SUBJECT INDEX 468
- SUBJECT INDEX R 469
- T SUBJECT INDEX 470
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