Resolution bandwidth limitations 19-11
What is a detector and why is one needed 19-12
Manual sweep 19-13
Special Considerations in Vector Mode 19-14
Time data 19-15
The time record 19-16
Why is a time record needed? 19-16
Time record, span and resolution bandwidth 19-17
Measurement speed and time record length 19-17
How do the parameters interact? 19-18
Time record length limitations 19-19
Time record processing 19-20
20 Analog Demodulation Concepts
What is Analog Demodulation? 20-2
Applications 20-2
Using analog demodulation for zero span measurements 20-2
How Does Analog Demodulation Work
in the Agilent 89400 Series Analyzer? 20-3
Special Considerations for Analog Demodulation 20-4
Time Correction and Analog Demodulation 20-5
The Importance of Span Selection 20-6
Including all important signal data 20-6
Checking for interfering signals 20-7
The Importance of Carrier Identification 20-8
Auto carrier with AM demodulation 20-8
Auto carrier with PM demodulation 20-8
Auto carrier with FM demodulation 20-8
Special considerations for auto carrier use 20-8
AM Demodulation Specifics 20-9
The algorithm 20-9
PM Demodulation Specifics 20-10
The algorithm 20-10
Auto carrier off 20-10
Auto carrier on 20-10
FM Demodulation Specifics 20-12
xxiv
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