Laxmi Sales Corporation

 an electronic test instrument that graphically displays and analyzes electrical signals in real-time. 
  Vertical amplifier: The input signal is fed into a vertical amplifier, which boosts its amplitude. The vertical controls, such as the Volts/Div knob, adjust this amplification level to fit the waveform on the screen vertically.

• Time base generator: A time base circuit creates a constant ramp voltage that sweeps an electron beam horizontally across the screen at a steady, user-controlled rate. This sweep rate is set by the Sec/Div knob.
• Trigger circuit: This circuit synchronizes the horizontal sweep with the input signal, ensuring that a stable and consistent waveform is displayed. The trigger level and slope can be adjusted to start the trace at a specific point on the signal.
• CRT: The amplified signal controls the vertical deflection of the electron beam, while the time base controls the horizontal movement. The beam strikes the phosphor-coated screen, causing it to glow and draw the waveform.
• Graticule: A grid on the screen allows the user to measure the waveform's voltage (on the Y-axis) and time (on the X-axis). 

Advantages

• Real-time display: Analog oscilloscopes display signals instantly as they occur, which is excellent for observing rapidly changing signals.
• Simplicity and affordability: The technology is well-established, making these devices simpler and generally less expensive than digital oscilloscopes.
• Educational value: Their direct display mechanism makes them ideal for visualizing fundamental electronic principles in educational settings.
• Aesthetic appeal: In fields like audio engineering, the continuous movement of the trace is preferred for observing signal nuances. 

Disadvantages

• Limited bandwidth: Analog oscilloscopes typically have a more limited frequency range than digital models, making them less suitable for high-frequency signals.
• No storage capabilities: The waveform trace fades shortly after it is drawn. Unlike digital scopes, analog models cannot store a signal for later analysis.
• No advanced features: They lack the complex triggering, measurement, and mathematical analysis features found on digital oscilloscopes.
• Fragile and heavier: Due to the use of a CRT, analog oscilloscopes are typically bulkier, heavier, and more fragile than modern digital alternatives.
• Becoming obsolete: While still functional, manufacturers have largely shifted towards digital technology, making new analog models rare