Comtech EF Data EQ90 Series - Manual (Page 40)

Operation EQ90 Amplitude Equalizer
3-16 Rev. 2
DE
LA
Y
(N
S
)
EQUALIZER
DELAY COMPONENT
LINEAR DELAY
COMPONENT
IF FREQUENCY (MHz)
Figure Chapter 3-14. All Sections Tuned 1 MHz Higher In Frequency
The overall amplitude response can be adjusted to less than 0.15 dB peak-to-peak for the
entire equalizer. The procedure for amplitude response adjustment is as follows:
1. Center the MLA frequency to the desired frequency of the equalizer. The sweep
bandwidth of the MLA should be 36 MHz.
2. Adjust the delay inductors and the delay capacitors until the specific peak-to-
peak delay response is achieved.
3. Adjust the amplitude adjustments for maximum flatness.
3.4.3 Slope Equalizer Adjustment
The SLP ADJ potentiometer (7, Figure 3-3) corrects for any residual amplitude slope in
the system. Adjustments within the slope equalizer range from 3.00 dB negative slope to
3.00 dB positive slope. The residual amplitude slope in a satellite system can be due to
any component in the system or their aggregates, including runs of cables, Waveguide,
etc. The slope compensation is usually accomplished as part of the system integration
procedure.