Техническая Спецификация для Cisco Compact Nodes 90070 and 90071
2
Compact Amplifier and Node Accessories
Forward Equalizers 74100
Forward equalizers produce a tilted frequency response opposite of that produced by coaxial cable. They are
normally used during amplifier or node installation to counteract the tilt produced by coaxial cable, in order to
achieve the desired output tilt. An equalizer’s “dB value” indicates the amount of tilt (in dB) that the equalizer
produces from 47 MHz to rated upper frequency. The dB value and rated upper frequency (450, 606, 750 or
862 MHz) are printed on the top of each equalizer.
Forward Equalizers – 862 MHz
normally used during amplifier or node installation to counteract the tilt produced by coaxial cable, in order to
achieve the desired output tilt. An equalizer’s “dB value” indicates the amount of tilt (in dB) that the equalizer
produces from 47 MHz to rated upper frequency. The dB value and rated upper frequency (450, 606, 750 or
862 MHz) are printed on the top of each equalizer.
Forward Equalizers – 862 MHz
Typical Insertion Loss (dB) at Various Frequencies (MHz)
EQ Value
(dB)
Part Number
47
87
100
340
470
606
750
862
0
A74069.10 - -
-
-
-
-
-
-
3.0
A74100.10803
3.1 3.0
2.8
1.9
1.4
0.8 - 0.4
6.0
A74100.10806
6.0 5.7
5.6
3.8
2.7
1.5 - 0.4
9.0
A74100.10809
8.8 8.3
8.2
5.2
3.7
2.1 - 0.4
12.0
A74100.10812
11.7 10.7
10.4
6.4
4.2
2.5 - 0.4
Forward Equalizers – 750 MHz
Typical Insertion Loss (dB) at Various Frequencies (MHz)
EQ Value
(dB)
Part Number
47
87
100
340
470
606
750
0
A74069.10 - -
-
-
-
- -
3.0
A74100.10706
3.1 3.0
2.8
1.9
1.4
1.4 0.5
6.0
A74100.10709
6.0 5.7
5.6
3.8
2.7
1.9 0.5
9.0
A74100.107105
8.8 8.3
8.2
5.2
3.7
2.0 0.5
12.0
A74100.10712
11.7 10.7
10.4
6.4
4.2
2.1 0.5
Forward Equalizers – 606 MHz
Typical Insertion Loss (dB) at Various Frequencies (MHz)
EQ Value
(dB)
Part Number
47
87
100
340
470
606
0
A74069.10 - -
-
-
-
-
3.0
A74100.10603
3.3 3.2
3.1
1.8
0.9
0.4
6.0
A74100.10606
6.3 6.0
5.9
3.1
1.4
0.4
9.0
A74100.10609
9.3 8.6
8.4
3.8
1.7
0.4
12.0
A74100.10612
11.9 10.8
10.4
5.2
2.5
0.4
15.0
A74100.10615
15.0 13.6
13.1
6.2
2.8
0.4
Forward Equalizers – 450 MHz
Typical Insertion Loss (dB) at Various Frequencies (MHz)
EQ Value
(dB)
Part Number
47
87
100
340
450
0
A74069.10 - -
-
-
-
6.0
A74100.10406
6.2 5.6
5.4
1.8
0.5
9.0
A74100.10409
9.2 8.1
7.8
2.7
0.6
12.0
A74100.10412
11.8 10.4
9.9
2.9
0.5
Reverse Equalizers 74140
These plug-in modules are designed for Compact amplifiers with built-in reverse path and are used to
determine the upper frequency of the reverse equalizer. The dB value and rated high frequency (30, 55, or 65
MHz) are printed on the top of each equalizer.
determine the upper frequency of the reverse equalizer. The dB value and rated high frequency (30, 55, or 65
MHz) are printed on the top of each equalizer.
How to use the Reverse Equalizers within Various Bandwidths (MHz)
Frequency
Range (MHz)
Part
Number
5 – 30
5 – 40
5 – 42
5 – 50
5 - 55
5 - 65
30
A74140.1030
+
55
A74140.1055
+ +
+
+
+
65
A74140.1065
+ +
+
+
+ +