Cisco Cisco 862 MHz GainStar Amplifier Guia Da Instalação
Balancing and Setup
36
2 Measure the output level, and compare this level with the design level. The test
point attenuates output signals by 20 dB.
3 Is the measured output level within ± 0.5 dB of the design level?
If yes, proceed to step 5.
If the output level is more than the design output level, replace the reverse
output pad with a higher value pad.
output pad with a higher value pad.
If the output level is less than the design level, replace the reverse output pad
with a lower value pad.
with a lower value pad.
4 Repeat steps 2 and 3 until the output level is correct.
5 Remove the test probe from the reverse output test point, leaving other
5 Remove the test probe from the reverse output test point, leaving other
equipment connectors intact.
To Set Up the Equalizer Values for Reverse Path
85 MHz Platform
The reverse output tilt can be adjusted using the Reverse Equalizer (EQ). Each EQ
has a range of values. The EQ value is set by installing the corresponding attenuator
pad. There are two types of reverse EQs for the 85 MHz Platform: 0 dB to 5 dB, P/N
GS-REQ-85-00-05; 6 dB to 10 dB, P/N GS-REQ-85-06-10. See the table below for the
full range of configurations for the 85 MHz Platform EQs.
has a range of values. The EQ value is set by installing the corresponding attenuator
pad. There are two types of reverse EQs for the 85 MHz Platform: 0 dB to 5 dB, P/N
GS-REQ-85-00-05; 6 dB to 10 dB, P/N GS-REQ-85-06-10. See the table below for the
full range of configurations for the 85 MHz Platform EQs.
* The section in gray indicates factory default value.
Reverse
Equalization
Equalization
Reverse Equalizer
Pad for Reverse Equalizer
Description PN
Description
PN
0 dB *
GS Rev
Cable EQ,
0 to 5 dB 85
MHz
Platform
Cable EQ,
0 to 5 dB 85
MHz
Platform
GS-REQ-
85-00-05,
0 to 5 dB
85-00-05,
0 to 5 dB
0 dB 1 GHz Plug-In Attenuator 4036021
1 dB
1 dB 1 GHz Plug-In Attenuator 4036022
2 dB
2 dB 1 GHz Plug-In Attenuator 4036023
3 dB
3 dB 1 GHz Plug-In Attenuator 4036024
4 dB
4 dB 1 GHz Plug-In Attenuator 4036025
5 dB
5 dB 1 GHz Plug-In Attenuator 4036026
6 dB
GS Rev
Cable EQ, 6
to 10 dB 85
MHz
Platform
Cable EQ, 6
to 10 dB 85
MHz
Platform
GS-REQ
-85-06-1
0, 6 to
10 dB
-85-06-1
0, 6 to
10 dB
6 dB 1 GHz Plug-In Attenuator 4036027
7 dB
7 dB 1 GHz Plug-In Attenuator 4036028
8 dB
8 dB 1 GHz Plug-In Attenuator 4036029
9 dB
9 dB 1 GHz Plug-In Attenuator 4036030
10 dB
10 dB 1 GHz Plug-In Attenuator 4036031