OD1402 - Lesson 1/Practice Exercise 1
PRACTICE EXERCISE 1
INSTRUCTIONS
This practice exercise will show you how much you have learned in
this lesson. Answer each question. When you are done, turn the
page to check your answers.
SITUATION: You are a tank turret repairer assigned the task of
troubleshooting an electronic malfunction in the turret. Your
supervisor advises you to use an AN/USM 281C oscilloscope to check
the voltages and electrical frequencies of the circuits.
1. The AN/USM 281C is a dual trace oscilloscope that consists of
two ____________________ ___________________________ and two
horizontal sweep generators, connected to a cathode ray tube (CRT).
2. Match the following controls to their function:
A. _____ Intensity
1. Fine adjustment of the
horizontal position of
the trace
B. _____ Focus
2. Controls the brightness
of the display
C. _____ Power
3. Fine tuning of the
deflection factor
D. _____ Gain
4. Controls the definition
of the display
E. _____ Position (Vertical
Amplifier)
5. Controls power to the
oscilloscope
F. _____ Fine
6. Coarse adjustment of the
horizontal position of
G. _____ Position (Dual
the display
Time Base)
7. Controls the vertical
position of the trace
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