Lesson 5
PRACTICE EXERCISE
1.
The FG output is amplified and shaped into a series of positive-going pulses. What is the
function of Q3, Q4, and C1?
a.
Convert the FG pulse to a sawtooth waveform
b.
Convert the FG pulse to a square waveform
c.
Convert the FG pulse to a trapezoidal waveform
d.
Convert the FG pulse to a triangular waveform
2.
What controls the capstan DC motor?
a.
The flip-flop output
b.
The servo PG coil
c.
The capstan servo system
d.
The PB control signal
3.
The capstan phase servo operates in which of the following modes?
a.
Erase and still mode
b.
Record and playback mode
c.
Audio and video mode
d.
Phase loop and amplifier mode
4.
The sampled DC outputs of both the capstan servo and phase servo provide inputs to which of
the following?
a.
Capstan servo
b.
Hold capacitor
c.
Differential amplifier
d.
Speed servo
5.
What are the three regulated voltages supplied by the power supply?
a.
+6.5, +18, and +24
b.
+6.5, +12, and +24
c.
12, +12, and +18
d.
+5, 12, and +18
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