Lesson 3
PRACTICE EXERCISE
1.
What happens to the chroma signal after going through the ACC circuit?
a.
Up converted
b.
Down converted
c.
Phase split
d.
Phase inverted
2.
What takes care of the instabilities of the playback chroma signal caused by mechanical jitter?
a.
APC loop
b.
ACC circuit
c.
NTSC signal
d.
None of the above
3.
Which signal causes IC-2 to select between its two input signals?
a.
Sinewave
b.
Frequency modulator
c.
DC control voltage
d.
Amplitude modulator
4.
Which IC on the MD-4 board (fig 3-2 (fo)) contains the Y-AGC?
a.
IC-1
b.
IC-2
c.
IC-3
d.
IC-4
5.
Which component filters out the DC output signal from the Y-AGC detector?
a.
C 34
b.
C 46
c.
C 54
d.
C 64
6.
In the color mode, the signal applied to IC-3 is separated by what filter?
a.
Halstead filter
b.
Line filter
c.
Comb filter
d.
Cosine filter
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