DI-770 Oscilloscope provides five virtual instruments in one

DI-770 and WINDAQ/Scope Manual
Setting up the time axis ...................................................................................................................... 56
Setting up the sample speed ........................................................................................................ 56
Setting the record length ............................................................................................................. 57
Setting the horizontal axis type ................................................................................................... 57
Perform measurements ...................................................................................................................... 57
Start measuring ............................................................................................................................ 57
Stop measuring ............................................................................................................................ 58
Scroll mode ................................................................................................................................. 58
Comparing signals using the reference channels ............................................................................... 58
Performing cursor measurements ...................................................................................................... 58
9. The Spectrum Analyzer .................................................................................................................... 59
Description of FFT ............................................................................................................................ 60
Aliasing ....................................................................................................................................... 60
Windowing .................................................................................................................................. 61
Displaying channels ........................................................................................................................... 61
Setting up a channel ........................................................................................................................... 62
Setting the input sensitivity ......................................................................................................... 62
Logarithmic or linear vertical axis .............................................................................................. 62
Setting up the frequency range .......................................................................................................... 63
Setting up the frequency axis type ..................................................................................................... 63
Setting the frequency range ......................................................................................................... 65
Setting the spectrum record length .............................................................................................. 65
Setting up the FFT ............................................................................................................................. 65
FFT window function .................................................................................................................. 65
Performing measurements ................................................................................................................. 66
Start and stop measuring ............................................................................................................. 66
Single measurements ................................................................................................................... 66
Averaging .................................................................................................................................... 66
Measuring maximum values ....................................................................................................... 66
Measure the Total Harmonic Distortion of a signal .................................................................... 67
Performing cursor measurements ...................................................................................................... 67
Setting up the cursor measurements ............................................................................................ 67
10. The Function Generator ................................................................................................................. 69
Principle of the function generator .................................................................................................... 69
Structure of the function generator .................................................................................................... 69
Controlling the function generator ..................................................................................................... 70
Signal shape ................................................................................................................................ 70
Frequency .................................................................................................................................... 70
Symmetry .................................................................................................................................... 70
Amplitude .................................................................................................................................... 71
DC offset ..................................................................................................................................... 71
Numerical input ................................................................................................................................. 71
Presets ................................................................................................................................................ 72
Storing ......................................................................................................................................... 72
Selecting ...................................................................................................................................... 73
Clearing ....................................................................................................................................... 73
Performing a sweep ........................................................................................................................... 73
Generating a previous measured signal from a file ........................................................................... 74
Measuring and storing a signal ................................................................................................... 74
Setting the function generator ..................................................................................................... 74
Table of Contents
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