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Method and device for measuring harmonic distortion index of broadcasting transmitter

A broadcast transmitter and harmonic distortion technology, which is applied in broadcast monitoring/testing/troubleshooting devices, transmitter monitoring, etc., can solve the problems of inconvenient data storage, low efficiency, and high requirements for testers, so as to ensure timeliness, The effect of ensuring accuracy

Inactive Publication Date: 2021-06-25
何家溢
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  • 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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  • Method and device for measuring harmonic distortion index of broadcasting transmitter
  • Method and device for measuring harmonic distortion index of broadcasting transmitter
  • Method and device for measuring harmonic distortion index of broadcasting transmitter

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Embodiment Construction

[0046] 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.

[0047] Such as figure 1 As shown, the present invention provides a method for measuring the harmonic distortion index of a broadcast transmitter, including:

[0048] S101, collect the input data x(t) of the transmitter and the corresponding output data y(t) in real time;

[0049] S102, according to the input data x(t) and the corresponding output data y(t), determine the nonlinear characteristic relationship between the input signal amplitude and the output s...

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Abstract

The invention discloses a method for measuring a harmonic distortion index of a broadcast transmitter, comprising the following specific steps: collecting input data x(t) and corresponding output data y(t) of the transmitter in real time; according to the input data x(t) ) and the corresponding output data y(t), determine the nonlinear characteristic relationship of the input signal amplitude corresponding to the output signal amplitude; use the nonlinear characteristic relationship as the harmonic distortion result of the transmitter; display and store the harmonic Wave distortion results. The method for measuring the harmonic distortion of the transmitter proposed by the invention ensures the accuracy and timeliness of the operating data of the transmitter, can monitor the working conditions of the transmitter on-line in real time, and can give an alarm in time when the transmitter fails.

Description

technical field [0001] The invention relates to the field of automatic testing of radio and television transmitters, in particular to a method and device for measuring harmonic distortion indexes of radio transmitters. 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 the specified audio signal to modulate the transmitter, so that the modulation range of the transmitter is 50% ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/15H04H20/12
CPCH04H20/12H04B17/15
Inventor 何家溢王翾陈声清
Owner 何家溢
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