Cisco Compact Broadband Amplifier 93211 and 93221 Fiche De Données
Data Sheet
Page 3 of 8
Reverse Equalizers, 74141
These reverse equalizers are designed for Compact EGC amplifiers and used to determine the
upper frequency of the reverse equalizer. The upper high frequency (30, 42, or 65 MHz) is printed
on the top of each equalizer. These reverse equalizers are used in combination with diplexers
75130.
upper frequency of the reverse equalizer. The upper high frequency (30, 42, or 65 MHz) is printed
on the top of each equalizer. These reverse equalizers are used in combination with diplexers
75130.
Table 5.
Reverse Equalizers
How to Use Reverse Equalizers Within Various Bandwidths (MHz)
Frequency Range
(MHz)
Part Number
5–30
5–42
5–65
30 A74141.1030
+
42 A74141.1042
+
+
65 A74141.1065
+
+
+
18–65 A74141.106518
18–30 18–42 18–65
Inverse Equalizers, 74190
These inverse equalizers are cable simulators and produce cable equivalent tilt. An inverse
equalizer is plugged in the AUX socket of an amplifier. The inverse equalizer is normally used
during amplifier balancing when an amplifier is short spaced, in order to achieve a flat input signal
into the first amplifier stage. Each inverse equalizer has a dB value indicating the length of cable
that would produce similar tilt (loss differential from 47 MHz to 862 MHz). The value in dB is printed
on the top of each inverse equalizer. The inverse equalizer can be used at all frequencies from 5
MHz to 862 MHz with the loss values given in the table below.
equalizer is plugged in the AUX socket of an amplifier. The inverse equalizer is normally used
during amplifier balancing when an amplifier is short spaced, in order to achieve a flat input signal
into the first amplifier stage. Each inverse equalizer has a dB value indicating the length of cable
that would produce similar tilt (loss differential from 47 MHz to 862 MHz). The value in dB is printed
on the top of each inverse equalizer. The inverse equalizer can be used at all frequencies from 5
MHz to 862 MHz with the loss values given in the table below.
Table 6.
Inverse Equalizers
Typical Insertion Loss (dB) at Various Frequencies (MHz)
Inverse EQ
862 MHz Value (dB)
Part Number
5
47
65
100
340
470
606
862
1000
3.0
A74190.1003
0.1 0.5 0.7 1.0 1.9 2.3 2.7 3.4 4.0
6.0
A74190.1006
0.1 0.5 0.6 1.0 3.1 4.0 4.8 6.3 7.3
9.0
A74190.1009
0.1 0.8 1.1 1.7 4.9 6.3 7.7 9.6 10.3
12.0
A74190.1012
0.1 0.5 0.9 1.7 6.3 8.1 9.6 12.5 14.1