1. 20-Jan-16 cathode ray oscilloscope

2. 20-Jan-16 tube photograph

3. 20-Jan-16 tube diagram H.T. supply heater supply y platesx plates +- phosphor screen anode

4. 20-Jan-16 electron gun photograph

5. 20-Jan-16 summary H.T. supply heater supply y platesx plates +- phosphor screen anode electron gun produces a beam of electrons light produced on the screen by electron beam a p.d. across the y plates deflects the trace vertically a p.d. across the x plates deflects the trace horizontally

6. 20-Jan-16 gain andf time-base controls

7. 20-Jan-16 peak voltage Peak p.d. = 3 Divisions x 1.0 mV/div = 3.0 mV

8. 20-Jan-16 period & frequency period = 4.0 divisions x 1.0 ms/div = 4.0 ms frequency = 1 / period frequency = 1 / 0.004 s frequency = 250 Hz

9. 20-Jan-16 self test