Cisco Cisco 870 MHz GainMaker Amplifiers Scheda Tecnica
Data Sheet
Page 2 of 9
Forward Cable Equalizers
Forward cable equalizers produce a tilted frequency response opposite of that produced by coaxial
cable. They are normally used during station balancing to counteract the tilt produced by coaxial
cable, in order to achieve the desired output tilt. An equalizer’s “dB value” indicates the equivalent
cable, in order to achieve the desired output tilt. An equalizer’s “dB value” indicates the equivalent
length of cable (in dB, at rated high frequency) that the equalizer is designed to offset. The dB
value and rated high frequency (750, 870, or 1002 MHz) are printed on the top of each equalizer.
The amount of tilt (in dB) that the equalizer produces from low to high frequency is printed on the
side of each equalizer.
Table 1.
Forward Cable Equalizers - 1002 MHz (blue cover)
EQ
Value
(dB)
Part
Number
Typical Insertion Loss (dB) at Various Frequencies (MHz)
52
70
86
550
600
650
750
870
1002
0
4007228
-
-
-
-
-
-
-
-
-
1.5
4007229
2.2
2.2
2.1
1.4
1.4
1.3
1.2
1.1
1.0
3.0
4007230
3.4
3.3
3.2
1.9
1.8
1.7
1.5
1.2
1.0
4.5
4007231
4.6
4.4
4.3
2.3
2.1
2
1.7
1.4
1.0
6.0
4007232
5.8
5.6
5.4
2.7
2.5
2.3
1.9
1.5
1.0
7.5
4007233
7.0
6.7
6.5
3.2
2.9
2.6
2.1
1.6
1.0
9.0
4007234
8.2
7.9
7.7
3.6
3.3
3.0
2.4
1.7
1.0
10.5
4007235
9.4
9.0
8.8
4.0
3.7
3.3
2.6
1.8
1.0
12.0
4007236
10.6
10.2
9.9
4.5
4.0
3.6
2.8
1.9
1.0
13.5
4007237
11.8
11.3
11.0
4.9
4.4
3.9
3.1
2.0
1.0
15.0
4007238
13.0
12.5
12.1
5.3
4.8
4.3
3.3
2.2
1.0
16.5
4007239
14.2
13.6
13.2
5.8
5.2
4.6
3.5
2.3
1.0
18.0
4007240
15.4
14.8
14.3
6.2
5.5
4.9
3.7
2.4
1.0
19.5
4007241
16.6
15.9
15.4
6.6
5.9
5.3
4.0
2.5
1.0
21.0
4007242
17.8
17.1
16.5
7.1
6.3
5.6
4.2
2.6
1.0
22.5
4007243
19.5
18.7
18.1
8.0
7.2
6.4
4.9
3.2
1.5
24.0
4007244
20.7
19.9
19.2
8.4
7.6
6.7
5.2
3.4
1.5
25.5
4007245
21.9
21.0
20.3
8.8
7.9
7.1
5.4
3.5
1.5
27.0
4007246
23.1
22.2
21.5
9.3
8.4
7.4
5.6
3.6
1.5
28.5
4007247
24.3
23.3
22.6
9.7
8.7
7.7
5.8
3.7
1.5
30.0
4007248
25.5
24.5
23.7
10.1
9.1
8.0
6.1
3.8
1.5
Note: Unless otherwise noted, all specifications reflect typical performance and are referenced to 68°F
(20°C). Specifications are based upon measurements made in accordance with SCTE/ANSI standards
(where applicable), using standard frequency assignments.
(20°C). Specifications are based upon measurements made in accordance with SCTE/ANSI standards
(where applicable), using standard frequency assignments.