A device and method for single frequency network debugging

A single frequency network and equipment technology, applied in phase modulation carrier systems, color TV components, TV system components, etc., can solve the problems of difficulty in maintaining long-term stability of equipment operation, troublesome waveform observation, and few opportunities for debugging, etc. , to achieve the effect of facilitating the production and debugging of equipment, the method is simple and fast, and easy to popularize
CN102595069BActive Publication Date: 2017-02-22CHINA BROADCAST CORP
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA BROADCAST CORP
Publication Date
2017-02-22

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Abstract

The invention provides a piece of equipment for debugging a single frequency network and a method for debugging a single frequency network. Controls comprise a single chip microcomputer, a demodulator, a port, a power supply, button displays and the like; and the controls are structured by using an equivalence processing method of time domain synchronization or frequency domain transformation so as to control a specified data bit of a transmitted waveform. With the controls and method for debugging the single frequency network provided by the invention, a phase of the specified data bit in a debugged low-frequency signal is observed and compared to judge the synchronization performance of a high-frequency carrier and adjust the carrier; a common oscilloscope with a low price is used for observing and adjusting the phase so as to complete the debugging of the single frequency network, therefore expensive oscilloscopes above 500 MHz do not need to be used; the production debugging, online networking of the equipment are convenient; the method is simple and fast; and the structured controls are portable, low in costs and easy to popularize.
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Description

technical field

[0001] The invention belongs to the field of mobile multimedia broadcasting, and in particular relates to a device and method for single frequency network debugging. Background technique

[0002] At present, in the equipment debugging of the digital single-frequency transmission network, the phase comparison between the reference second pulse and the transmission signal is usually carried out on the oscilloscope, so as to judge whether the phase lock is stable and adjust the phase of the equipment. The resulting problem is that the oscilloscope used needs a bandwidth of 500--800 MHz. This oscilloscope is expensive, dozens of times the price of an ordinary oscilloscope with a bandwidth below 20 MHz; Observation is also troublesome. Although some single-frequency transmission network equipment can be set to the debugging state, causing the transmission waveform to be partially depressed for easy observation, the equipment debugging is cumbersome and does not ge...

Claims

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