IntroductiontoOscilloscope - Introduction to the...

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Introduction to the Oscilloscope T W O C H A N N E L D I G I T A L S T O R A G E O S C I L L O S C O P E 6 0 M H z 1 G S / s T D S 1 0 0 2 P R I N T S A V E / R E C A L L U T I L I T Y C U R S O R M E A S U R E D I S P L A Y A C Q U I R E M E N U S H E L P D E F A U L T S E T U P A U T O S E T R U N S T O P S I N G L E S E Q T R I G G E R H O R I Z O N T A L P O S I T I O N L E V E L V E R T I C A L P O S I T I O N P O S I T I O N C U R S O R I C U R S O R 2 H E L P S C R O L L S E C / D I V V O L T S / D I V V O L T S / D I V C H 1 C H 2 E X T T R I G 3 0 0 V C A T I H O R I Z M E N U S E T T O Z E R O T R I G M E N U S E T T O 5 0 % F O R C E T R I G T R I G M E N U C H 1 M E N U C H 2 M E N U M A T H M E N U U S E R S E L E C T P R O B E C H E C K P R O B E C O M P ~ 5 V @ 1 k H z ! Figure 1: Front view of the oscilloscope TDS1002 Fig. 1 shows the front view of the oscilloscope TEKTRONIX TDS1002. Besides the display, the electronics of an oscilloscope can be divided into 3 major units: 1. amplifier (VERTICAL) 2. time base (HORIZONTAL) 3. trigger unit (TRIGGER) The time base determines at which speed the input signal is detected (sampled). The amplifier prepares and samples the input signal at the rate given by the time base. The trigger unit is used to choose the event at which the amplifier starts to record the signal. Mostly, this is an edge (low-high or high-low) of the sampled waveform, but one can also trigger on more sophisticated events (pulses of a pre-defined duration, a number of edges within a given time etc.). Figure 2: Screenshot The display (Fig. 2) is covered by a graticule, the distance between two adjacent lines is called a division. With the SEC/DIV and VOLTS/DIV knob the corresponding time (horizontal) and
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