Chapter 5
Using Interference Analyzer
JD700B Series User’s Guide
109
Introduction
Interference is becoming more prevalent in the wireless community with the increasing number of
transmitters coming on the air. Wireless service providers have traditionally used spectrum analyzers to
monitor service channels, frequencies, and adjacent spectrum and to locate sources of interference. A
spectrum analyzer can only show you an interfering signal and you require determining the source of the
interference. To solve interference problems, you must understand the RF environment, know adjacent
operating transmitters, and identify any new or unlicensed emitters.
Once a potential interfering signal is identified in the Spectrum Analyzer mode, you can monitor the signal
further in the Interference Analyzer mode. JD700B series provides two different methodologies to identify
and determine interference signals: Spectrogram and Received Signal Strength Indicator (RSSI). Locating
the source of interference signal can be done with geographical information received from the built-in GPS
receiver.
The JD700B series is extremely effective for locating and identifying periodic or intermittent RF interference.
Interference signals derive from several kinds of licensed or unlicensed transmitters that cause dropped
calls and poor service quality.
The JD700B series provides following measurements for interference analysis:
◼
Spectrum
◼
Spectrogram
◼
Dual Spectrogram
◼
RSSI (Received Signal Strength Indicator)
◼
Interference Finder
◼
Spectrum Replayer
◼
Radar Chart
Using a set of the AntennaAdvisor Handle that holds a broadband directional antenna is mandatory in the
Rader Chart mode and its built-in compass, GPS antenna, gyro sensor, and low-noise amplifier (LNA)
benefits you to determine the direction of the interference.
Display overview
provides descriptions for each segment of the measurement screen.
Содержание CellAdvisor JD700B Series
Страница 2: ...CellAdvisorTM JD700B Series FW3 120 User s Guide ...
Страница 105: ...Chapter 4 Using Spectrum Analyzer 104 JD700B Series User s Guide Figure 44 PIM detection for multiple carriers ...
Страница 406: ...Chapter 11 Using EV DO Signal Analyzer JD700B Series User s Guide 405 3 Pilot 4 MAC 64 5 MAC 128 ...
Страница 734: ...Chapter 18 Perfroming BBU Emulation JD700B Series User s Guide 733 Figure 441 Example of verification of link status ...
Страница 763: ...Chapter 21 Performing Fiber Inspection 762 JD700B Series User s Guide Figure 461 Fiber inspection report ...
Страница 808: ...Appendix JD700B Series User s Guide 807 JD740B series ...
Страница 811: ...Appendix 810 JD700B Series User s Guide Figure 470 Append keywords window ...