
187
FCC Rules
Cumulative Leakage Index
Cumulative Leakage Index (CLI), also referred to as a “figure
of merit” measurement, is a method for assessing the leakage
integrity of a cable plant. The cable operator demonstrates
compliance with a cumulative signal leakage index by showing
either that:
and where:
r = Distance in meters (m) between the leakage source and
the center of the cable system.
ø = Fraction of the system cable length actually examined for
leakage sources. The fraction is equal to the strand miles
tested divided by total strand miles.
R = Slant height distance (m) from leakage source i to a point
3,000 meters above the center of the cable system.
E = Electric field strength in microvolts per meter (µV/m)
measured 3 meters from leak i.
n = Number of leaks found with a field strength ≥ 50 µV/m.
using either:
where:
Содержание AMM-806
Страница 86: ...79 TVCB PC Installation ...
Страница 93: ...86 SMI Installation Torque Patterns 1 Start Here 2 3 4 5 6 1 Start Here 2 3 4 4 PORT 8 PORT ...
Страница 125: ...118 Fiber Optics Fiber Loss vs Path Length Single Mode 1550 nm ...
Страница 156: ...149 Cable TV Channel Format NTSC NTSC Composite Video Waveform ...
Страница 157: ...150 US Frequency Spectrum ...
Страница 158: ...151 FCC Aeronautical Band Frequencies Used for Communication and Navigation ...
Страница 171: ...164 F C x 32 Temperature Conversion Nomograph C F FAHRENHEIT F CELSIUS C 9 5 C F 32 5 9 KELVIN K K C 273 ...
Страница 175: ...168 Common CATV Symbols ...
Страница 176: ...169 Common CATV Symbols ...
Страница 177: ...170 Digital L Band Distribution Symbols ...
Страница 178: ...171 Digital L Band Distribution Symbols ...
Страница 183: ...176 Typical Cable Attenuation Chart in dB 100 Feet 68 F 20 C ...
Страница 187: ...180 Echo Rating Graph ...
Страница 188: ...181 Signal to Interference Limits Non Coherent Carriers ...
Страница 190: ...183 Heterodyne Modulator Analog ...
Страница 191: ...184 Heterodyne Processor Analog ...
Страница 213: ...206 Multiplexers ...
Страница 215: ...208 Antenna Stacking Methods to Increase Received Signal Level NOTE Refer to Antenna Spacing Chart for dimensions ...
Страница 216: ...209 Antenna Spacing Mounting Channelized Antennas on the Same Mast NOTE Refer to Antenna Spacing Chart for dimensions ...
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