Alignment to a specific delay requirement, To figure chapter 3-8 fo, Figure chapter 3-8. t – Comtech EF Data EQ90 Series User Manual
Page 36: 2 alignment to a specific delay requirement
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Operation
EQ90 Amplitude Equalizer
3-12
Rev. 2
AMPLITUDE
IF FREQUENCY (MHz)
DELAY
DE
LA
Y
(N
S
)
Figure Chapter 3-8. Effect on Amplitude of Varying “R”
3.4.2
Alignment to a Specific Delay Requirement
CAUTION
The following principles shall be understood before attempting this
alignment procedure. Damage to the equipment may be the result.
Multi-pole bandpass filters having a nearly maximally flat response will exhibit a group
delay characteristic as shown in Figure Chapter 3-9. This shape is largely parabolic and
may be slightly flat about its center frequency and slightly tilted at its edges.
IIF FREQUENCY (MHz)
DE
L
A
Y
(N
S)
Figure Chapter 3-9. Multi-Pole Bandpass Filter Delay Response
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