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Broadcast transmitter amplitude-frequency response indicator measurement method and device

A broadcast transmitter and amplitude-frequency response technology, which is applied in television, electrical components, image communication, etc., can solve the problems of different proficiency in instrument operation, high requirements for testers, and low efficiency, and achieve the goal of ensuring accuracy and timeliness Effect

Active Publication Date: 2018-06-15
何家溢
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because the testers have different mastery of the measurement method and different proficiency in the operation of the instrument, the uncertainty of the measurement time and measurement results is caused, and it has the disadvantages of low efficiency, inconvenient data storage and high requirements for testers.

Method used

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  • Broadcast transmitter amplitude-frequency response indicator measurement method and device
  • Broadcast transmitter amplitude-frequency response indicator measurement method and device
  • Broadcast transmitter amplitude-frequency response indicator measurement method and device

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Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] Such as figure 1 As shown, the present invention provides a method for measuring the amplitude-frequency response index of a broadcast transmitter, including:

[0045] S101, collect the input data x(t) of the transmitter and the corresponding output data y(t) in real time;

[0046] S102. According to the input data x(t) and the corresponding output data y(t), determine the system delay τ for the signal to pass through the transmitter;

[0047] S103. C...

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Abstract

The invention discloses a broadcast transmitter amplitude-frequency response indicator measurement method and device. The method comprises the following specific steps of collecting input data x(t) and corresponding output data y(t) of a transmitter in real time; determining system delay tau of passing the transmitter by a signal according to the input data x(t) and the corresponding output data y(t); calculating amplitude-frequency response of the transmitter through combination of the system delay tau; and displaying and storing the amplitude-frequency response. According to the transmitteramplitude-frequency response measurement method provided by the invention, the accuracy and timeliness of the operation data of the transmitter are ensured, the working condition of the transmitter can be monitored online in real time, and alarm can be carried out timely when a fault occurs in the transmitter.

Description

technical field [0001] The invention relates to the field of automated testing of radio and television transmitters, in particular to a method and device for measuring the amplitude-frequency response index of a radio transmitter. Background technique [0002] The AM broadcast transmitter is an important part of the radio and television system. In order to ensure the broadcast quality of the transmitter, it is necessary to regularly test the indicators of the transmitter, so as to make timely adjustments to the problems that occur. The traditional method of manually measuring the harmonic distortion of the transmitter is to adjust the output power of the transmitter to the rated output power during the non-broadcasting period of the transmitter according to the requirements of the radio, film and television industry standard GY / T 225-2007 of the People's Republic of China. Use 1000Hz sinusoidal signal to modulate the transmitter, the modulation amplitude of the short-wave tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00
CPCH04N17/00H04N17/004
Inventor 何家溢刘峰周剑张尧富
Owner 何家溢
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