CATV field strength meter is an instrument that measures the field strength of a TV signal. Field strength is the abbreviation of electric field strength, which is the magnitude of the electric signal induced by the antenna at a certain point in space to characterize the electric field strength at that point. The field strength measurement generally understood by electronic enthusiasts is actually to use an antenna to receive the TV signal in the air, or directly connect it to the signal output jack of the cable TV, and use a field strength meter to read its signal strength.
CATV Signal Measurement Range 46-870MHz
CATV Signal Measurement Range 5-1040MHz
In fact, for TV signals, the level of the sync head is usually measured to measure the strength of the signal, with dBμV as the unit, but everyone is used to calling it field strength measurement.
TV field strength meter is mainly used to test the TV field strength level, which is generally composed of radio frequency input and attenuation circuit, high frequency tuning circuit, intermediate frequency demodulation circuit, video processing circuit, spectrum processing circuit, synchronization and display circuit, accompanying sound and field strength tone. It is composed of circuit, power supply and battery charging circuit. The function of the field strength meter For the TV signal field strength meter, in addition to the most basic level measurement functions, it also generally has accompanying sound measurement, carrier/noise ratio measurement, image display, sync pulse display, field strength sound prompt, digital frequency Display, video signal output/input, power supply to external LNB, etc. Field strength meters are generally equipped with batteries, which are convenient to carry when going out to work. The battery can be charged by commercial power, or by a car substitute, and can generally work for more than 6 hours after charging. Many field strength meters have the function of spectrum analysis, which can scan and observe the signal in the whole TV frequency range, and then press the cursor to lock the required signal for measurement. Field strength meters can be divided into TV field strength meters, TV spectrum image field strength meters, and CATV analyzers according to their functions.
Advanced field strength meters generally cover TV and satellite frequency bands, have spectrum analysis functions and color image display, and can measure and analyze analog TV signals and digital TV signals.
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Introduction of TV Signal Level DB Meter CATV field strength meter is an instrument that measures the field strength of a TV signal. Field strength is the abbreviation of electric field strength, which is the magnitude of the electric signal induced by the antenna at a certain point in space to chara
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