Tektronix TDS1000- Manual do Utilizador descarregar pdf (Página 139)

Math FFT

TDS1000/2000-Series Digital Oscilloscope User Manual

121

Applying a window to the YT waveform changes the waveform so

that the start and stop values are close to each other, reducing the

discontinuities.

Time-domain

(YT) waveform

YT waveform

after windowing

Window

function

(Hanning)

FFT

Point-by-point

multiply

With windowing

Center 2048

data points

1 2 ... 134 135 136 137 138 139 140 141 142 143 144 ... 205 206

User Manual 1
TDS1000- and TDS2000-Series 1
Digital Storage Oscilloscope 1
071-1064-00 1
WARRANTY SUMMARY 3
(P2200 Probe) 4
Table of Contents 5
General Safety Summary 9
Safety Terms and Symbols 10
Help System 13
Conventions 15
Product End-of -Life Handling 16
Contacting Tektronix 17
Getting Started 19
General Features 20
Installation 22
Functional Check 23
Probe Safety 24
Probe Check Wizard 25
Manual Probe Compensation 26
Probe Attenuation Setting 27
Self Calibration 28
Setting Up the Oscilloscope 30
Triggering 31
Rising edge 34
Falling edge 34
Trigger level can be 34
Acquiring Signals 35
Actual high-frequency 38
Apparent low-frequency 38
Sampled points 38
Taking Measurements 42
Operating Basics 45
Display Area 46
Using the Menu System 50
Vertical Controls 52
Horizontal Controls 53
Menu and Control Buttons 56
Connectors 57
Application Examples 59
Taking Simple Measurements 60
CH 1 CH 2 64
Taking Cursor Measurements 66
5 divisions 71
Analyzing Signal Detail 72
Measuring Propagation Delay 76
Triggering on a Video Signal 80
Sample Peak Detect Average 92
12345678910 93
Sample points 93
Sample points displayed 94
Typical peak detect display 95
Reference 102
Cursor Menu 102
Default Setup 103
Horizontal 108
Measurement type Definition 112
Probe Check 114
Save/Recall 115
Trigger Controls 117
Threshold level 124
= Trigger point 124
Vertical 130
Math FFT 133
Displaying the FFT Spectrum 136
Fundamental 137
Frequency 137
Selecting an FFT Window 138
Nyquist frequency 141
(one-half sample rate) 141
Amplitude 141
Magnitude cursors 144
Frequency cursors 144
TDS2CMA Communications Module 145
Checking Module Installation 148
RS-232 connector 149
GPIB connector 149
Centronics connector 149
" Options " RS-232 154
Function Setting 155
Baud rate 155
Parity None 155
PROBE COMP 156
" Options " 158
GPIB bus communications 163
Command Entry 168
Appendix A: Specifications 169
Appendix A: Specificati ons 170
Appendix B : Accessories 187
2-channel 188
4-channel 188
Appendix B: Accessories 190
General Care 191
Cleaning 191
Appendix D: Default Setup 193

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