Stanford Research Systems SR785, Руководство по эксплуатации и программированию

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2-2 Analyzer Basics
SR785 Dynamic Signal Analyzer
Two Tone 2-36
Chirp 2-36
Noise 2-36
Arbitrary 2-36
Windowing 2-37
Source Trigger 2-37
External Trigger 2-37
Correlation Analysis 2-38
What is Correlation Analysis? 2-38
Correlation Measurements 2-38
Capture 2-40
User Function 2-40
Octave Analysis 2-41
What is Octave Analysis? 2-41
Band Center Frequencies 2-41
Full Octave Bands 2-41
1/3 Octave Bands 2-41
1/12 Octave Bands 2-41
Octave Measurements 2-42
Octave 2-42
Capture 2-42
User Function 2-43
Octave Averaging 2-43
Linear Time 2-43
Exponential Time 2-43
Equal Confidence 2-44
Peak Hold 2-44
Sound Level Measurement 2-44
Leq 2-44
Impulse 2-44
Peak 2-45
Total Power 2-45
Settling Time 2-46
Swept Sine Measurements 2-47
Why Use Swept Sine? 2-47
Swept Sine Measurement Setup 2-49
Swept Sine Measurements 2-49
Spectrum 2-49
Cross Spectrum 2-50
Frequency response 2-50
Normalized Variance 2-50
User Function 2-50
Averaging - Settling and Integration 2-50
Sweep Frequency and Auto Resolution 2-51
Input Auto Ranging
2-52
Source Auto Level and Ramping 2-53
Order Analysis 2-55
What is Order Analysis? 2-55
Order Spectra and Order Tracking 2-55
Order Measurement Setup 2-55
Order Measurements 2-56
Linear Spectrum 2-56
Power Spectrum 2-56
Time Record 2-56
Windowed Time Record 2-56
RPM Profile 2-57
Orbit 2-57
Track 2-57
Capture 2-57
User Function 2-57
Time/Histogram Measurements 2-58
Time and Histogram Measurements 2-58
Measurements in the Time/Histogram
Group
2-58
Histogram 2-58
Time Record 2-58
Probability Density Function (PDF) 2-58
Cumulative Density Function (CDF) 2-59
Capture
2-59
User Function 2-59
Trace Storage 2-60
User Math Functions 2-61
What is a User Function? 2-61
Measurement Groups and Traces 2-61
Operands 2-61
X Axis 2-62
Operations 2-63
User Function Limits 2-64
Signal Inputs 2-65
Manual Range 2-65
Auto Range 2-65
Input Noise 2-65
Input Impedance 2-66
Anti-aliasing Filter 2-66
A-Weighting Filter 2-67
Input Transducer Units 2-67
Input Connections 2-68
Single-Ended Connection (A) 2-68
Differential Connection (A-B) 2-68
Common Mode Signals 2-68
AC vs DC Coupling 2-69
Intrinsic (Random) Noise Sources 2-70
Johnson Noise 2-70
Shot Noise 2-70
1/f Noise 2-70
Total Noise 2-70
External Noise Sources 2-71
Capacitive Coupling 2-71
Inductive Coupling 2-72
Resistive Coupling (Ground Loops) 2-73
Microphonics
2-73
Thermocouple Effects 2-74