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Measurements
R&S
®
RTO
137User Manual 1316.0827.02 ─ 06
In the R&S RTO, the eye diagram is automatically set up for jitter measurements. The
following characteristic values and jitter parameters can be determined:
Fig. 5-2: Basic eye diagram characteristics
The default eye/jitter measurement is extinction ratio (%).
To obtain optimized settings for an eye measurement, use the "Autoset" function that is
provided on the right side of the "Eye/Jitter" tab.
Table 5-5: Eye/jitter measurement types
Meas. type Description/Result
2 Extinction ratio (%) Top level / Base level in percent
(V
top
/V
base
*100)
3 Extinction ratio (dB) Top level / Base level in dB
10*log (V
top
/V
base
)
4 Eye height Vertical eye size
(V
top
– 3 * σ_top) – (V
base
+ 3 * σ_base)
5 Eye width Horizontal eye size
(Tcrossing2 – 3 * Sigma_crossing2) – (Tcrossing 1 – 3 * Sigma_crossing1)
6 Eye top High signal level (V
top
)
7 Eye base Low signal level (V
base
)
10 Q factor
(V
top
– V
base
)/(σ_top + σ_base)
14 Noise (RMS) Average of top and base deviation
15 S/N ratio Signal-to-Noise Ratio
20 * log (Eye height / NoiseRMS)
16 Duty cycle distortion Eye Rise Time / Eye Fall Time
Automatic Measurements
- Digital Oscilloscope 1
- User Manual 1
- Basic Safety Instructions 3
- 1171.0200.52-01.01 15
- Customer Support 16
- Qualitätszertikat 17
- Certicate of quality 17
- Certicat de qualité 17
- Contents 19
- 1 Preface 27
- 2 Acquisition and Setup 29
- Fig. 2-3: R&S 31
- 2.1.3 Horizontal System 35
- . With these parameters 36
- GainCommonMode 39
- 2.2 Setting Up the Waveform 40
- 2.2.5 Using the Roll Mode 42
- 2.2.7 Using Digital Filters 42
- 2.3.1 Horizontal Settings 43
- 52
- 2.3.2 Vertical Settings 54
- 2.3.3 Probes 57
- Acquisition and Setup 58
- The function 61
- AutoZero" 62
- "Print" 62
- ProbeMeter: Measurement type 63
- 2.3.4 Digital Filter Setup 65
- 2.3.5 Horizontal Accuracy 67
- 3 Triggers 69
- 3.2 Setting Up the Trigger 71
- 3.2.3 Using Holdoff 72
- 3.3 Reference for Triggers 73
- 3.3.1 Events 74
- 3.3.2 Trigger Qualification 93
- 3.3.3 Noise Reject 95
- 3.3.4 Sequence 96
- 3.3.5 Trigger Position 99
- 3.3.6 Control 101
- 4 Display 104
- 4.1.2 Adjusting the Display 105
- 4.2 Zoom 117
- 4.2.2 Zooming for Details 119
- - to display the selected 123
- 4.2.3 Reference for Zoom 124
- 4.3 XY-diagram 127
- 4.4 History 130
- 4.4.1 About History 131
- 4.4.2 Using History 131
- 4.4.3 Reference for History 133
- 5 Measurements 137
- 5.2 Automatic Measurements 145
- Measurements 149
- Automatic Measurements 149
- PosPulse 150
- SetupHold Setup 181
- Auto scale 190
- 6 Mathematics 197
- 6.1.2 Math Setup 198
- ← Vertical Scale 199
- FIR: Type, Cut-Off 202
- 6.2.2 Advanced Expressions 203
- Mathematics 205
- 6.3 FFT Analysis 208
- Overlap area 209
- Record 209
- Gate position 210
- Gate length 210
- Center frequency 210
- Frequency span 210
- 7 Reference Waveforms 224
- 7.2 Reference Waveforms 225
- 7.2.2 Scaling 227
- ← Vertical Stretching 228
- ← Horizontal Stretching 229
- on page 28 230
- on page 39 230
- 8 Mask Testing 231
- 8.2 Working with Masks 233
- 8.2.2 Setting Up a Mask Test 237
- 8.2.4 Running a Mask Test 238
- 8.3 Reference for Masks 240
- 8.3.2 Mask Definition 243
- 8.3.3 Event Actions /Reset 249
- 8.3.4 Mask Display 251
- 9 Search Functions 252
- 9.2.4 Clearing Search Results 257
- 9.3.1 Setup Tab 258
- 9.3.2 Scope Tab 260
- 9.3.3 Result Presentation 262
- 9.3.4 Noise Reject 264
- 10 Protocol Analysis 266
- 10.1.2 Display 267
- # --- Start of PTT file 269
- @FILE_VERSION = 1.0 269
- @PROTOCOL_NAME = i2c 269
- @PROTOCOL_NAME = can 269
- 10.1.4 Bit Pattern Editor 271
- 10.2 I²C 272
- 10.2.1 The I²C Protocol 273
- 10.2.2 Analyzing I²C Signals 274
- 10.2.3 Reference for I²C 276
- Column Description 283
- R/W bit Value of the R/W bit 283
- 10.3 SPI Bus 285
- 10.3.2 Analyzing SPI Signals 286
- 10.3.3 Reference for SPI 287
- 10.4 UART / RS232 294
- CAN (Option R&S RTO-K3) 302
- Protocol Analysis 309
- LIN (Option R&S RTO-K3) 312
- 10.6.2 Reference for LIN 313
- Chks (hex) Checksum value 321
- 10.7.1 Reference for FlexRay 323
- Single-endedDifferential 325
- Indicators 327
- 11.1 About MSO 337
- 11.2.1 Using Digital Probes 340
- 11.3 Reference for MSO 344
- SCPI command: 346
- ← Signal selection 347
- Threshold setup 347
- 11.3.2 MSO Display 348
- 11.3.3 MSO Digital Probes 348
- 11.3.5 MSO Resolution 358
- 12.1.4 Restoring Settings 364
- 12.2.1 Save/Recall 366
- 12.2.2 Autonaming 370
- 12.2.3 User-defined Preset 371
- 12.2.4 File Selection Dialog 371
- 13 General Instrument Setup 376
- 13.2.2 Front Panel Setup 384
- 13.2.3 Self-alignment 385
- General Instrument Setup 386
- 14.1 Operating System 387
- 14.1.3 Logon 388
- 14.2 Firmware Update 389
- 14.3 Software Options 390
- 14.3.1 Mode 391
- 14.4 Operation in a Network 392
- 14.4.2 LXI Configuration 395
- Parameter Value 396
- Dynamic DNS Enabled 396
- ICMP Ping Enabled 396
- 15 Maintenance 401
- 15.3 Data Security 402
- 15.4 Storing and Packing 402
- 15.5 Performing a Selftest 402
- 15.6.2 Selftest 403
- 16 Remote Control 405
- 16.1.3 Messages 408
- 16.1.4 SCPI Command Structure 411
- Remote Control 428
- 16.2 Command Reference 434
- 16.2.3 Common Commands 438
- 16.2.5 Acquisition and Setup 443
- Range: -500 to 500 446
- Suffix: 454
- PRINt 462
- Range: -100E-9 to 100E-9 468
- 16.2.6 Trigger 469
- Suffix Trigger type 494
- 2 GLITch 494
- <NewZoomName> 519
- 16.2.8 Cursor Measurements 531
- 16.2.9 Automatic Measurements 538
- Command Reference 559
- 16.2.11 Reference Waveforms 606
- 16.2.12 Mask Testing 613
- 16.2.13 Search Commands 627
- 16.2.14 Protocols 659
- 16.2.16 Data Management 769
- 16.2.18 Maintenance 787
- 16.2.19 Status Reporting 787
- A Menu Overview 792
- A.2 Horizontal Menu 793
- A.3 Trigger Menu 793
- A.4 Vertical Menu 794
- Zero" on page 46 794
- A.5 Math Menu 794
- A.6 Cursor Menu 794
- A.7 Meas Menu 795
- A.8 Masks Menu 795
- A.9 Search Menu 795
- A.10 Protocol Menu 796
- A.11 Display Menu 796
- Menu Overview 797
- Display Menu 797
- List of Commands 798
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