CN203251302U - Portable RDS frequency modulation broadcast tester - Google Patents
Portable RDS frequency modulation broadcast tester Download PDFInfo
- Publication number
- CN203251302U CN203251302U CN2013202722766U CN201320272276U CN203251302U CN 203251302 U CN203251302 U CN 203251302U CN 2013202722766 U CN2013202722766 U CN 2013202722766U CN 201320272276 U CN201320272276 U CN 201320272276U CN 203251302 U CN203251302 U CN 203251302U
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- rds
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Abstract
The utility model relates to a portable RDS frequency modulation broadcast tester applied to an FM frequency modulation broadcast system. The tester is characterized by comprising an audio frequency input port, an audio frequency output port, a radio frequency port, an RDSFM receiving module group, an RDSFM emission module group, a microprocessor, an LCD (liquid-crystal display), a button and a machine monitoring horn. The RDSFM emission module group comprises an FM modulator, an RDS encoder, a numerical control radio frequency amplifier and a data processor. The RDSFM receiving module group comprises an FM demodulator, an audio frequency demodulator, an RDS decoder, a signal level detector, a data processor and a numerical control audio frequency amplifier. Compared with the prior art, the portable RDS frequency modulation broadcast tester involved in the utility model has advantages of low cost, high sensitivity and portability, and has the functions for setting of RDS frequency modulation terminal parameters and RDS data test.
Description
Technical field
The utility model relates to a kind of tester for the FM frequency modulation broadcast system, particularly a kind of portable RDS FM broadcasting tester that is applied in the FM frequency modulation broadcast system.
Background technology
TV field strength meter possesses the additional function of FM broadcasting test, be widely used in the frequency modulation broadcast system test, but its sensitivity is relatively poor, and the TV field intensity that is lower than 30dBuV just can't be tested, and in the reality receiving sensitivity of fm broadcast signal below 10dBuV; Function singleness, volume is heavy, can only just slightly test the single signal field intensity, lacks the function of the RDS Frequency Modulated Terminal being write frequency, write address and modification parameter, does not support project installation and plant maintenance.Because above technical problem, under many circumstances, TV field strength meter can not satisfy the FM broadcasting testing requirement, and adopts senior professional field test instrument too high because of cost, can't be widely applied.
Summary of the invention
That the purpose of this utility model is is low for existing TV field strength meter sensitivity, function singleness, volume are heavy, expensive, the difficult technical problem of promoting of senior professional field test instrument, provide a kind of with low cost, highly sensitive, be easy to carry, possess RDS Frequency Modulated Terminal parameter arranged portable RDS FM broadcasting tester with the RDS data test.
A kind of portable RDS FM broadcasting tester, it is characterized in that, its structure comprises that audio input port, audio output port, prevention at radio-frequency port, RDS FM receive module, RDS FM emitting mould train, microprocessor, LCD liquid crystal display, button, the machine monitoring loudspeaker.Microprocessor is connected with RDS FM reception module, RDS FM emitting mould train, LCD liquid crystal display, button respectively, prevention at radio-frequency port receives module with RDS FM and is connected with RDS FM emission group, audio input port is connected with RDS FM emitting mould train, and audio output port is monitored loudspeaker with the machine and is connected with RDS FM receiver module.Wherein, the RDS emitting mould train is to be made of FM modulator, RDS encoder, numerical control radio frequency amplifier and data processor, and it is to be made of FM demodulator, audio demodulator, RDS decoder, signal level detection instrument, data processor and numerical control audio frequency amplifier that RDS receives module.
Compared with prior art, the utility model has the advantage of:
Lightweight, volume is little, be easy to carry.
2. have high measurement sensitivity, can reach-5dBuV.
3. increase the FM radio frequency output of subsidiary RDS, can provide radio-frequency signal source for the RDS Frequency Modulated Terminal.
4. increase RDS data test function, can carry out various parameter settings to the RDS Frequency Modulated Terminal by the RDS radio-frequency transmissions, supported project installation and plant maintenance.
Description of drawings
Fig. 1 is portable RDS FM broadcasting tester schematic diagram of the present utility model.
Embodiment
Consult shown in the accompanying drawing embodiment, the utility model is explained in further detail.
Portable RDS FM broadcasting tester as shown in Figure 1, it is characterized in that, its structure comprises that audio input port, audio output port, prevention at radio-frequency port, RDS FM receive module, RDS FM emitting mould train, microprocessor, LCD liquid crystal display, button, the machine monitoring loudspeaker.Microprocessor is connected with RDS FM reception module, RDS FM emitting mould train, LCD liquid crystal display, button respectively, prevention at radio-frequency port receives module with RDS FM and is connected with RDS FM emission group, audio input port is connected with RDS FM emitting mould train, and audio output port is monitored loudspeaker with the machine and is connected with RDS FM receiver module.Wherein, the RDS emitting mould train is to be made of FM modulator, RDS encoder, numerical control radio frequency amplifier and data processor, and it is to be made of FM demodulator, audio demodulator, RDS decoder, signal level detection instrument, data processor and numerical control audio frequency amplifier that RDS receives module.
The embodiment of the portable RDS FM broadcasting of the utility model tester is:
When system is in test pattern, RDS FM emitting mould train is closed, and RDS FM receives module and opens, and the frequency that needs test is set by button, LCD display provides man machine operation interface, and microprocessor is coordinated the exchanges data of button, RDS FM reception module, LCD display.Signal to be tested enters RDS FM by prevention at radio-frequency port and receives module, the FM demodulator and the audio demodulator that utilize RDS FM to receive in the module restore audio signal, by the numerical control audio frequency amplifier, signal transfers to audio output port or the machine is monitored loudspeaker, carries out audio select.In the audio-frequency test process, the RDS decoder that RDS FM receives in the module detects RDS data additional in the signal, after data processor processes and deliver to microprocessor, then transfers to LCD display after microprocessor decoding; RDS FM receive in the module the level detection instrument signal level detection to data after data processing module is processed, be delivered to microprocessor, then after microprocessor decoding, transfer to LCD display; By with upper type, all test datas all can be shown on the LCD display.
When system is in service mode, RDS FM receives module and closes, RDS FM emitting mould train is opened, by button Frequency Modulated Terminal frequency, address code and mode of operation are set, LCD display provides man machine operation interface, and microprocessor is coordinated the exchanges data of button, RDS FM reception module, LCD display.During terminal parameter setting, the FM modulation module of the parameter that the RDS Frequency Modulated Terminal need to arrange in RDS FM emitting mould train transfers on the FM carrier wave, exports the RDS Frequency Modulated Terminal to through prevention at radio-frequency port again, and the RDS Frequency Modulated Terminal receives that the signal automatic decoding finishes the parameter setting; When not carrying out terminal parameter setting, the additional RDS carrier wave of RDS FM emitting mould train output also can provide the radio-frequency verification testing source to terminal equipment, by audio input port audio signal source is sent into, FM modulator in RDS FM emitting mould train is modulated to radio-frequency carrier with signal and gets on, for the terminal checking provides audio signal source.
The above; it only is the better embodiment of the utility model; but the scope that comprises of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, all should be encompassed within the protection range of the present utility model.
Claims (1)
1. portable RDS FM broadcasting tester, it is characterized in that, its structure comprises that audio input port, audio output port, prevention at radio-frequency port, RDS FM receive module, RDS FM emitting mould train, microprocessor, LCD liquid crystal display, button, the machine monitoring loudspeaker, and described RDS FM emitting mould train is to be made of FM modulator, RDS encoder, numerical control radio frequency amplifier and data processor; It is to be made of FM demodulator, audio demodulator, RDS decoder, signal level detection instrument, data processor and numerical control audio frequency amplifier that described RDS FM receives module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202722766U CN203251302U (en) | 2013-05-17 | 2013-05-17 | Portable RDS frequency modulation broadcast tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202722766U CN203251302U (en) | 2013-05-17 | 2013-05-17 | Portable RDS frequency modulation broadcast tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203251302U true CN203251302U (en) | 2013-10-23 |
Family
ID=49377714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202722766U Expired - Fee Related CN203251302U (en) | 2013-05-17 | 2013-05-17 | Portable RDS frequency modulation broadcast tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203251302U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112506764A (en) * | 2020-11-30 | 2021-03-16 | 展讯半导体(成都)有限公司 | Method, system, equipment and medium for automatically testing RDS function |
-
2013
- 2013-05-17 CN CN2013202722766U patent/CN203251302U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112506764A (en) * | 2020-11-30 | 2021-03-16 | 展讯半导体(成都)有限公司 | Method, system, equipment and medium for automatically testing RDS function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20160517 |