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06.09.2014.
06.09.2014. Measurements Waveforms Types Analog Digital: DPO, - - PowerPoint PPT Presentation
06.09.2014. Measurements Waveforms Types Analog Digital: DPO, - - PowerPoint PPT Presentation
06.09.2014. Measurements Waveforms Types Analog Digital: DPO, Sampling, Mixed Domain... Virtual Oscilloscope http://www.virtual-oscilloscope.com/ Controls POWER INTENSity FOCUS TRace Beam Finder Scale Illumination Controls CH1 CH2
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Waveforms
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Types
Analog Digital: DPO, Sampling, Mixed Domain...
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Virtual Oscilloscope
http://www.virtual-oscilloscope.com/
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Controls
POWER INTENSity FOCUS TRace Beam Finder Scale Illumination
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Controls
CH1 CH2 Inputs DC/AC/GND input coupling Channel options: CH I/II display (Trigger source CH I/II) DUAL ADD CHOP
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Controls
Horizontal: TIME/DIV CALibration X-POSition X-MAGnification
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Signal frequency
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Waveform
TIME/DIV 2 ms VOLTS/DIV 0.5 V
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Controls
Vertical: VOLTS/DIV CAL Y-POSition INVERT
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Controls
Tiggering: AuTo/NORMal LEVEL HOLD OFF TV SEParation Off/TV-H/TV-V TRIGger AC/DC/HF/LF/~, +/- EXTernal trigger
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Controls
CALibration
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Controls
X-Y mode
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Dual trace, two channels
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X-Y mode
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Dual trace, two channels
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X-Y mode
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Phase shift measurement
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Probes
Passive: x1 / x10 / x100 High Voltage HV Active: 10x / 100x Differential Trimmer HF/LF compensation
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Theory of operation
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Signal examples
AC mains hum over audio signal
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Signal examples
HF signal AM modulated by LF signal
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Signal examples
„DC“ signal – magnified to show DC level fluctuation and superimposed noise
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Signal examples
„Sine“ wave - Bad filtration and signal reconstruction at the D/A converter output
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Signal examples
Not so perfect „Square“ waves
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Signal examples
Signal clipping on sine waves
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Signal examples
Response time
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