LESSON 2
EQUALIZING PROCEDURES
Scope................................ Block diagram analysis of equipment
arrangement to measure envelope-delay
distortion using the end-to-end and
the end-to-end with reference-return
methods; measurement of amplitude-
frequency response; use of equalizer
to minimize envelope-delay distortion
and
to
modify
amplitude-frequency
response.
CREDIT HOURS ......................... 2
TEXT ASSIGNMENT ...................... Attached Memorandum,
para
2-1
thru
2-3; appendix A
MATERIALS REQUIRED ................... None
SUGGESTIONS .......................... None
LESSON OBJECTIVES
When you have completed this lesson, you should:
1.
Know that preliminary tests for amplitude-frequency response and
envelope-delay distortion must be completed before applying an equalizer to
a circuit.
2.
Know that a modulated
carrier
signal
must
be
used
to
test
for
envelope-delay distortion.
3.
Know that data circuits must usually be equalized
to
minimize
envelope-delay distortion and amplitude-frequency response.
4.
Know that an equalizer remains installed in each conditioned circuit.
5.
Be able to distinguish among methods used for measuring envelope-delay
distortion.
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