Data Sheet

6
Compact Amplifier and Node Accessories
Ingress Blocking Filter 75127/75128
The Ingress Blocking Filter may be used in Compact nodes to suppress the ingress in the lower end of the
reverse band. The filter reduces the ingress load on the reverse transmitter. If no filter is needed the socket is
left open.
Part Number
Parameter
75127.101520 (single) 75128.101115 (single) 75128.101520 (dual)
Frequency Range
Pass band
Stop band
20 - 862 MHz
5 - 15 MHz
5 - 200 MHz
0 - 11 MHz
20 - 200 MHz
5 - 15 MHz
Insertion Loss
1.1 dB @ 20 MHz
0.5 dB @ 25 - 750 MHz
1.0 dB @ 750 - 862 MHz
1.2 dB @ 20 MHz
0.6 dB @ 25 - 200 MHz
1.1 dB @ 20 MHz
0.5 dB @ 25 - 200 MHz
Return Loss
1
23 dB 23 dB 23 dB
Stop band Loss 26 dB @ 5 - 10 MHz
23 dB @ 10 - 15 MHz
38 dB @ 5 - 7.5 MHz
25 dB 7.5 - 11 MHz
26 dB @ 5 - 10 MHz
23 dB @ 10 - 15 MHz
Group Delay
11.0 ns, Df = 1 MHz
@ 20 - 25 MHz
1.0 ns, Df = 4.43 MHz, CH2
Other channels > 25 MHz
18.0 ns, Df = 1 MHz
@ 15 - 18 MHz
5.0 ns, Df = 1 MHz
@ 18 - 21 MHz
3.0 ns, Df = 1 MHz
@ 21 - 27 MHz
1.0 ns, Df = 1 MHz, > 27 MHz
12.0 ns, Df = 1 MHz
@ 20 - 25 MHz
1.0 ns Df = 4.43 MHz, CH2
Other channels > 25 MHz
Notes:
1) At 40 MHz decreasing with 1.5 dB per octave
Push-On F-Adapter 71004
The F-Adapter type 71004 is pushed on the test points for quick and easy measuring.
Description Part Number
Push-On F-Adapter A71004
Plug-In Test Adapter 71071
The plug-in Test Adapter is a 3-point adapter with a F-connector and is used to measure signals from 5 MHz
to 1 GHz in Compact mini amplifiers. The adapter makes it possible to monitor signals from one, two or three
signal points, e.g. upstream and downstream at the same time. The test adapter is normally placed in the mini
amplifier’s diplex filter socket at the input.
Description Part Number
Plug-In Test Adapter 71071 A71071.10
Please Note:
Do not use the Test Adapter in the reverse equalizer socket in Compact amplifiers 9321x and 9322x, as this
may course malfunction in the reverse path. Use the dedicated test point.
Do not use the Test Adapter in the reverse filter socket in the Compact node 9007x, as this may course
malfunction in the reverse path. Use the dedicated test point.