Poor Frequency Response
149
Notes
These notes apply to the previous troubleshooting flowchart.
Note
Description
1
Be sure all unused ports are properly terminated into 75 ohms to prevent
mismatches. The frequency response is cumulative and reflects the response of
each active device in the link:
The frequency response for the transmitter is dependent on the transmitter
manufacturer's specification.
The frequency response of the 1.2 GHz GS7000 Node is ±1.0 dB from 52
MHz to 1218 MHz (for optical receiver and amplifier combined).
2
It is possible that the RF amplifier is set up incorrectly. Always check to see that
padding and equalization is correct to ensure proper levels at the inputs to each
gain stage. See the pad and equalizer selection charts in Appendix A for correct
pad and equalization.
Summary of Contents for GS7000
Page 1: ...Cisco 1 2 GHz GS7000 Node Installation and Operation Guide ...
Page 2: ......
Page 7: ...Contents v Glossary 213 Index 225 ...
Page 8: ......
Page 19: ...Laser Warning Labels xvii ...
Page 20: ......
Page 34: ......
Page 38: ...Chapter 2 Theory of Operation 18 Left Right Segmented ...
Page 84: ...Chapter 2 Theory of Operation 64 1 1 EDR Transmitter 3 2 1 EDR Transmitter 7 ...
Page 96: ...Chapter 3 Installation 76 ...
Page 108: ......
Page 112: ...Chapter 4 Setup and Operation 92 Left Right Segmented ...
Page 116: ...Chapter 4 Setup and Operation 96 Right side Ports 4 5 and 6 illustration ...
Page 143: ...Opening and Closing the Housing 123 ...
Page 158: ......
Page 172: ......
Page 232: ...Appendix C Expanded Fiber Tray 212 ...
Page 244: ......
Page 253: ......