This document provides an overview of oscilloscopes, including what they are, how they work, types of oscilloscopes, and their applications. It explains that oscilloscopes allow electronics professionals to visualize voltage changes over time. It describes the basic components of an oscilloscope like the electron gun and deflection plates. The document also discusses the differences between analog and digital oscilloscopes and lists some common types like digital storage oscilloscopes. Finally, it outlines several examples of how oscilloscopes are used, such as measuring voltage, timing signals, and analyzing pulse widths.

3. OUTLINE
• What is an Oscilloscope?
• Professions using Oscilloscope
• How an Oscilloscope works?
• Cathode Ray Oscilloscope
• Types of Oscilloscopes
• Applications of Oscilloscopes

4. What is an
Oscilloscope?

5.  We all have seen and drawn graphs in school time.
 Graph – shows change in a particular quantity
or trait with time ( in most cases).
 But in electronics, it may take ages to plot unless (quantities like voltage).
 So… in such cases “OSCILLOSCOPE” comes into play.

6. Professions using Oscilloscopes
Physicists and Researchers
Engineers and Students
Electronic Technicians
Health Care Workers

7. How an Oscilloscope works?

8. Electron Gun

9. Cathode
Control Grid
Aperture
= electron

10. Control Grid
First Anode
= electron

11. First Anode Second Anode
= electron

12. Second Anode
Screen
= electron

13. Cathode
Second Anode
Control Grid
First Anode
Screen
= electron

14. DEFLECTION PLATES

15.  Electrons are negatively charged particles.
 Attracted by positive charge or field.
 So, to deflect the electron beam positive field
is used to attract the beam in particular direction.
Horizontal Plates Vertical Plates
--- -
++ +++
-ve Field
+ve Field
= electron

16. Phosphor
Screen
Electron Gun
Horizontal Plates Vertical Plates

17. What are graticules?

18. a graticule is part of the visual display, to
facilitate measurements.

19. Types of graticules
External Graticule Internal
Scale Marked from outside Scale marked from inside
It has parallax error It removes the parallax error
Sources : Electronic Instrumentation and Measurements - William D.Cooper

20. Types of
Oscilloscopes

21. ANALOGOSCILLOSCOPES
 implies “ANALOG” techniques to
create the pattern on the display.
DIGITAL OSCILLOSCOPES
 first coverts the signal into digital
format and then processes it.

22. Analog Digital

23. Different types of Digital Oscilloscopes
Digital Storage Oscilloscopes (DSO)
Digital Phosphor Oscilloscope
Digital Sampling Oscilloscope
Mixed Domain Oscilloscope (MDO)
Mixed Signal Oscilloscope (MSO)

24. APPLICATIONS OF OSCILLOSCOPES
 DC/AC Voltage measurement
 Time/frequency measurements of a particular signal
 Pulse width measurements
 Pulse rise time and fall time measurements
 Phase difference measurements