Residential Audio & Video Systems Copyright © 2005 Heathkit Company, Inc. All Rights Reserved Presentation 5 - Using the Oscilloscope

2 Objectives At the end of this presentation, you will be able to:

3 Identify the most common controls on an oscilloscope and briefly describe the purpose of each. Set up and display a signal trace on an oscilloscope screen. Use an oscilloscope to measure the amplitude of a signal. Use an oscilloscope to measure the period of a signal, and from the period derive the frequency of the signal. Use a dual trace oscilloscope to compare the frequency and amplitude of two signals.

4 Amplitude Frequency Phase

5 TIME/ DIV ms us.1.2 TR INTENS. FOCUS POWER X - Y Y-POS. IY-POS. II INVERT CH. I VERT. INP. 10M TRIG. I/II CHOP mV V VOLTS/ DIV mV V VOLTS/ DIV. 20 CH I/II DUAL ADD DC AC GD DC AC GD 20 MHz Dual Trace Oscilloscope X-MAG X 10 CH. II VERT. INP. 10M VAR. GAIN CAL. TV SEP. OFF TV: H TV: V TRIG. AC DC HF LF ~ X-POS. HOLD OFF. + / - EXT. AT/NORM. LEVEL TRIG. INP. 100Vp max CAL.

6 TR INTENS. FOCUS POWER

7 TR INTENS. FOCUS POWER Y-POS. I X-POS.

8 TR INTENS. FOCUS POWER Y-POS. I X-POS.

9 TR INTENS. FOCUS POWER Y-POS. I X-POS.

10 TIME/ DIV ms us.1.2 TR INTENS. FOCUS POWER X - Y Y-POS. IY-POS. II INVERT CH. I VERT. INP. 10M TRIG. I/II CHOP mV V VOLTS/ DIV mV V VOLTS/ DIV. 20 CH I/II DUAL ADD DC AC GD DC AC GD 20 MHz Dual Trace Oscilloscope X-MAG X 10 CH. II VERT. INP. 10M VAR. GAIN CAL. TV SEP. OFF TV: H TV: V TRIG. AC DC HF LF ~ X-POS. HOLD OFF. + / - EXT. AT/NORM. LEVEL TRIG. INP. 100Vp max CAL. Y-POS I Y-POS II CH I / II

11 TIME/ DIV ms us.1.2 TR INTENS. FOCUS POWER X - Y Y-POS. I Y-POS. II INVERT CH. I VERT. INP. 10M TRIG. I/II CHOP mV V VOLTS/ DIV mV V VOLTS/ DIV. 20 CH I/II DUAL ADD DC AC GD DC AC GD 20 MHz Dual Trace Oscilloscope X-MAG X 10 CH. II VERT. INP. 10M VAR. GAIN CAL. TV SEP. OFF TV: H TV: V TRIG. AC DC HF LF ~ X-POS. HOLD OFF. + / - EXT. AT/NORM. LEVEL TRIG. INP. 100Vp max CAL.

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16 Amplitude Time Amplitude Time

ms

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19 F = 1 __ T Frequency = 1 Time _____ Time = 4 milliseconds = seconds F = 1 __ T = _____ = 250 Hertz

20

21 F = 1 __ T Frequency = 1 Time _____ Time = 9.4 microseconds = seconds F = 1 __ T = _________ = 106,383Hz

22 DUAL

23 TIME/ DIV ms us.1.2 TR INTENS. FOCUS POWER X - Y Y-POS. IY-POS. II INVERT CH. I VERT. INP. 10M TRIG. I/II CHOP mV V VOLTS/ DIV mV V VOLTS/ DIV. 20 CH I/II DUAL ADD DC AC GD DC AC GD 20 MHz Dual Trace Oscilloscope X-MAG X 10 CH. II VERT. INP. 10M VAR. GAIN CAL. TV SEP. OFF TV: H TV: V TRIG. AC DC HF LF ~ X-POS. HOLD OFF. + / - EXT. AT/NORM. LEVEL TRIG. INP. 100Vp max CAL. Channel I Input Channel II Input

24 TIME/ DIV ms us.1.2 TR INTENS. FOCUS POWER X - Y Y-POS. IY-POS. II INVERT CH. I VERT. INP. 10M TRIG. I/II CHOP mV V VOLTS/ DIV mV V VOLTS/ DIV. 20 CH I/II DUAL ADD DC AC GD DC AC GD 20 MHz Dual Trace Oscilloscope X-MAG X 10 CH. II VERT. INP. 10M VAR. GAIN CAL. TV SEP. OFF TV: H TV: V TRIG. AC DC HF LF ~ X-POS. HOLD OFF. + / - EXT. AT/NORM. LEVEL TRIG. INP. 100Vp max CAL.

25 TIME/ DIV ms us.1.2 TR INTENS. FOCUS POWER X - Y Y-POS. I Y-POS. II INVERT CH. I VERT. INP. 10M TRIG. I/II CHOP mV V VOLTS/ DIV mV V VOLTS/ DIV. 20 CH I/II DUAL ADD DC AC GD DC AC GD 20 MHz Dual Trace Oscilloscope X-MAG X 10 CH. II VERT. INP. 10M VAR. GAIN CAL. TV SEP. OFF TV: H TV: V TRIG. AC DC HF LF ~ X-POS. HOLD OFF. + / - EXT. AT/NORM. LEVEL TRIG. INP. 100Vp max CAL.

Residential Audio & Video Systems Copyright © 2005 Heathkit Company, Inc. All Rights Reserved End