Agilent Technologies 22A Dokumentacja Strona 79
- Strona / 120
- Spis treści
- BOOKMARKI
- Spectrum Analysis Basics 1
- Table of Contents 2
- — continued 3
- Chapter 1 4
- Introduction 4
- What is a spectrum? 5
- Why measure spectra? 6
- Types of measurements 8
- Types of signal analyzers 8
- Chapter 2 10
- Spectrum Analyzer 10
- Fundamentals 10
- Accuracy.” 11
- RF attenuator 12
- Tuning the analyzer 12
- IF gain 16
- Resolving signals 16
- H(4000) = –10(4) log 18
- Residual FM 19
- Phase noise 20
- Sweep time 22
- Digital resolution filters 23
- Envelope detector 24
- Displays 25
- Detector types 26
- Positive peak 27
- Negative peak 27
- One bucket 27
- (positive) detection 28
- Peak (positive) detection 29
- Negative peak detection 29
- Normal detection 29
- 1Buckets 2 3 4 5678910 31
- Average detection 32
- Averaging processes 33
- Video filtering 34
- Trace Averaging 36
- Time gating 38
- RF signal 40
- Gate signal 40
- Gated FFT 42
- Gated video 42
- Gated sweep 43
- Chapter 3 44
- Digital IF Overview 44
- The all-digital IF 45
- Custom signal processing IC 47
- Frequency counting 47
- Chapter 4 49
- Amplitude and 49
- Frequency Accuracy 49
- Frequency response 51
- Relative uncertainty 52
- Absolute amplitude accuracy 52
- Improving overall uncertainty 53
- The digital IF section 54
- Examples 55
- Frequency accuracy 56
- Chapter 5 58
- Sensitivity and Noise 58
- Noise figure 61
- Preamplifiers 62
- Spectrum analyzer 63
- –10 –5 0 +5 +10 64
- Noise as a signal 65
- 1% (±0.044 dB) 67
- Chapter 6 70
- Dynamic Range 70
- Attenuator test 74
- 2nd order 78
- Gain compression 80
- Chapter 7 83
- Extending the 83
- Frequency Range 83
- Image frequencies 86
- 4.7 4.9 5.1 5.3 88
- Preselector 90
- Amplitude calibration 91
- Improved dynamic range 92
- External harmonic mixing 96
- Signal identification 98
- Figure 7-17a. 14 100
- Chapter 8 102
- Modern Spectrum Analyzers 102
- Figure 8-1. CCDF measurement 103
- Digital modulation analysis 105
- Saving and printing data 106
- Firmware updates 108
- Glossary of Terms 110
- Agilent Email Updates 120
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