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Harmonic distortion index measurement method and device for broadcasting transmitter

A broadcast transmitter and harmonic distortion technology, applied in broadcast monitoring/testing/troubleshooting devices, transmitter monitoring, etc., can solve the problems of inconvenient data storage, low efficiency, and different levels of instrument operation proficiency, to ensure accurate sex, guarantee the effect of timeliness

Inactive Publication Date: 2018-09-14
何家溢
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  • Abstract
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  • Claims
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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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  • Harmonic distortion index measurement method and device for broadcasting transmitter
  • Harmonic distortion index measurement method and device for broadcasting transmitter
  • Harmonic distortion index measurement method and device for broadcasting transmitter

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Embodiment Construction

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within 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 broadcasting transmitter, including:

[0048] S101, collecting input data x(t) and corresponding output data y(t) of the transmitter 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 amplitude of the input...

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Abstract

The invention discloses a harmonic distortion index measurement method for a broadcasting transmitter, which comprises the following specific steps of: acquiring 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), determining a nonlinear characteristic relationship of an input signal amplitudeand a corresponding output signal amplitude; using the nonlinear characteristic relationship as a harmonic distortion result of the transmitter; and displaying and storing the harmonic distortion result. The method for measuring harmonic distortion of the transmitter, which is disclosed by the invention, ensures accuracy and timeliness of operation data of the transmitter, can carry out real-timeonline monitoring on the working condition of the transmitter, and can timely give an alarm when the transmitter has a fault.

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 the harmonic distortion index of a radio transmitter. Background technique [0002] AM broadcast transmitters are an important part of the broadcast and television system. In order to ensure the broadcast quality of the transmitters, the transmitter indicators must be tested on a regular basis in order to adjust in time for problems that occur. The traditional method of manually measuring transmitter harmonic distortion 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 People’s Republic of China Radio, Film and Television Industry Standard GY / T 225-2007. Use the specified audio signal to modulate the transmitter so that the modulation amplitude of the transmitter is 50% and 90%, and use an audio analy...

Claims

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Application Information

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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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