SITUATION
Assume that you are conditioning a telephone circuit, using Envelope
Delay and Amplitude Equalizer CN-1234A/GCC.
Exercises 17 through 19 are
based on the above situation.
17.
Two circuit impairments which the equalizer compensates for are
a.
crosstalk and envelope delay.
b.
terminal impedance and crosstalk.
c.
envelope-delay and amplitude-frequency distortion.
d.
amplitude-frequency distortion and terminal impedance.
18.
After you have completed the equalization process, you are expected to
a.
remove the unused equalizer sections for use elsewhere.
b.
leave the entire equalizer connected to the circuit permanently.
c.
remove the
equalizer
and
substitute
equivalent
values
of
reactance.
d.
restore all equalizer
controls
to
zero
in
preparation
for
subsequent operations.
19.
When the technician adjusts DELAY, AMPLITUDE, and FREQUENCY KHZ
controls of the combination equalizer, he may notice that adjustment
of one affects the adjustment of the other. This is most noticeable
in the critical parameter areas.
Comparing the parameters shown in
figures 2-7 and 2-8, the technician can expect most interaction in the
frequency ranges from
a.
0.5 to 0.6 kHz.
b.
0.6 to 1.0 kHz.
c.
1.0 to 2.6 kHz.
d.
2.6 to 2.8 kHz.
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