Cisco GS7000 문제 해결 매뉴얼 - 페이지 4
{카테고리_이름} Cisco GS7000에 대한 문제 해결 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Cisco GS7000 12 페이지. Gainmaker node
forward local injection module
Cisco GS7000에 대해서도 마찬가지입니다: 설치 지침 매뉴얼 (13 페이지), 유지 관리 매뉴얼 (15 페이지), 문제 해결 (4 페이지)
페이지 인쇄
Poor C/N Performance
Note
1
2
Note
• Assumes 2.5% OMI/CH or 20% composite.
• Assumes 1310 nm wavelength / Add one dB for 1550.
• Assumes 0dB attenuator switch setting unless noted, if otherwise subtract attenuator value from reading.
• Assumes -4dB optical input, if otherwise add or subtract 2dB RF for each 1dB optical input.
Poor C/N Performance
Follow this troubleshooting flowchart. Also see the notes following the chart.
Troubleshooting
4
Description
For standard receiver
If the green LED is Off, it is outside optical
input range. Green (On) indicates that light is
present and the optical input value is higher than
-10 dBm.
The recommended RF output level at the output
of the receiver module is 27 dBmV (+7.0 dBmV
as measured at the -20 dB RF test point). This
setup is recommended to achieve the best
possible performance.
For low input receiver
If the green LED is Off, it is outside optical
input range. Green (On) indicates that light is
present and the optical input value is higher than
-14 dBm.
The recommended RF output level at the output
of the receiver module is 27 dBmV (+7.0 dBmV
as measured at the -20 dB RF test point). This
setup is recommended to achieve the best
possible performance with 8 dB setting.
Troubleshooting