1. Circuit Lab. Experiment-3 Operating the function generator and digital oscilloscope

2. Quiz • A(t)=5.sin(100pt) • Draw the graphic of A(t) signal • Calculate amplitude, frequency and time period.

3. FUNCTION GENERATORGW INSTEK SFG-2120 • Generation of Test Signals • Square Wave • Sine Wave • Triangular Wave • Digitally Controlled Frequency (0.1 Hz ... 20 MHz) • Manually Controlled Amplitude (0...10V (pp)) • 50 ohm BNC output • TTL/CMOS BNC output • Counter BNC input for frequency counter • Amplitude, Frequency Modulation, Variable Mod. index

4. FUNCTION GENERATORGW INSTEK SFG-2120

5. FUNCTION GENERATORGW INSTEK SFG-2120

10. How can we see the signal? • Oscilloscope • GW Instek GDS 1102 • 100 MHz • 2 channels • 1 M ohm input impedance • FFT, A*B, A+B, A-B • Digital Measurements (Vpp, Vdc, Frequency...) • Saving Graphical Data (SD Card Interface)

11. DIGITAL OSCILLOSCOPEGW Instek GDS-1102

12. Connection • BNC Connectors (RF Connector) (British Naval Connector)

13. Cable • RG-58/U Coaxial Cable • Low-power signal and RF connections • Characteristic impedance: 50 ohm A: outer plastic sheath B: woven copper shield C: inner dielectricinsulator D: copper core

14. Oscilloscope Probe

15. Equivalent Circuits 1x Probe R1=1M ohm C1=1-10 pF 10x Probe R1=9M ohm C1=1-10pF Oscilloscope Input R2=1M ohm C2=20 pF

16. Osilloscope Probe Test • Check the probe set : 1x or 10x • Connect the BNC connector of the Oscilloscope Probe to CH1 • Connect the test connector of the oscilloscope probe to Test Output • Press Run/Stop Key • Measure the frequency and the amplitude of the test signal

17. Osilloscope Probe Compensation

18. Volt Division of CH1 Volt Division of CH2 Time Division

19. 1st Job: • A(t)=5.sin(100pt) • Amplitude? • peak (p) • peak-to-peak (pp) • Time period? (seconds) • Frequency? (Hertz)

20. 2nd Job • Derive the sine signal using function generator and oscilloscope

21. 3rd Job • Generate • 4 V (p-p) • 10 kHz • Square Wave

22. 4th Job • Generate • 100 mV (p-p) • 1 kHz • Sine Wave

23. Cursors