Circuit Lab.
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Transcript of Circuit Lab.
![Page 1: Circuit Lab.](https://reader033.fdocuments.us/reader033/viewer/2022061511/56815a6e550346895dc7ce36/html5/thumbnails/1.jpg)
Circuit Lab.
Experiment-3
Operating the function generator and digital
oscilloscope
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Quiz
• A(t)=5.sin(100t)
–Draw the graphic of A(t) signal
–Calculate amplitude, frequency and time period.
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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
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FUNCTION GENERATORGW INSTEK SFG-2120
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FUNCTION GENERATORGW INSTEK SFG-2120
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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)
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DIGITAL OSCILLOSCOPEGW Instek GDS-1102
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Connection
• BNC Connectors (RF Connector) (British Naval Connector)
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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 dielectric insulator
D: copper core
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Equivalent Circuits1x Probe
R1=1M ohm
C1=1-10 pF
10x Probe
R1=9M ohm
C1=1-10pF
Oscilloscope
Input
R2=1M ohm
C2=20 pF
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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
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Osilloscope Probe Compensation
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Volt Division
of CH1
Volt Division
of CH2Time
Division
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1st Job:
• A(t)=5.sin(100t)
– Amplitude? • peak (p)• peak-to-peak (pp)
– Time period? (seconds)
– Frequency? (Hertz)
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2nd Job
• Derive the sine signal using
function generator and oscilloscope
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3rd Job
• Generate
–4 V (p-p)
–10 kHz
–Square Wave
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4th Job
• Generate
–100 mV (p-p)
–1 kHz
–Sine Wave
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Cursors