CN201733378U - Satellite and terrestrial television signal testing device - Google Patents
Satellite and terrestrial television signal testing device Download PDFInfo
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- CN201733378U CN201733378U CN2010202404793U CN201020240479U CN201733378U CN 201733378 U CN201733378 U CN 201733378U CN 2010202404793 U CN2010202404793 U CN 2010202404793U CN 201020240479 U CN201020240479 U CN 201020240479U CN 201733378 U CN201733378 U CN 201733378U
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Abstract
The utility model belongs to the field of radio-frequency devices, particularly relates to an electronic testing device for a radio-frequency signal and belongs to an electronic device for testing the satellite TV signal and the terrestrial TV signal. The satellite and terrestrial television signal testing device comprises a circuit board arranged in a shell and a port fitting arranged on a panel, wherein the circuit board comprises a high-frequency signal amplification and distribution module, a DVB-S receiving demodulation module, a DVB-T receiving demodulation module, a CPU main control chip unit, a keyboard, a status indicating unit, a storage device unit, an input and output interface unit, an LCD drive display module, an acoustic alarm module and a power management module. The provided satellite and terrestrial television signal testing device not only can simultaneously display and adjust the terrestrial TV signal and the satellite TV signal, provides a great convenience for debugging operation, but also is provided with an LCD display screen and a speaker, can intuitively express the testing effect in details and greatly improves the testing efficiency.
Description
Technical field
The utility model relates to less radio-frequency device field, relates in particular to the electronic test equipment of radiofrequency signal, is the electronic installation at satellite TV signal and the dual test of terrestrial television signal.
Background technology
Along with people's living standard improves day by day, present television set is not limited only to the reception of terrestrial television signal, also needs via satellite signal receiver to watch satellite television programming.This parameter that just needs to adjust satellite signal receiver receives to obtain good satellite TV signal, can watch the high definition satellite television programming.
Existing TV signal testing apparatus or only be used for the test of terrestrial television signal, or only be used for the test of satellite TV signal.Like this, if the HDTV of family expenses wants to watch terrestrial television signal and satellite TV signal, need to take two kinds of testers that corresponding signal receiver is carried out parameter testing, operation is trouble very.And existing TV signal tester can only detect the existence of digital television signal, and can not obtain the details of digital television program content, and debugging is got up and very bothered, and can only debug repeatedly, and efficient is low, and effect can not guarantee.
The utility model content
Therefore, at above-mentioned deficiency, the utility model proposes the device of the dual test unification of a kind of satellite and terrestrial television signal, and possess the testing apparatus of DCO effect intuitively.
The technical solution of the utility model is:
Satellite of the present utility model and terrestrial television signal testing apparatus comprise being arranged at interior circuit board of crust of the device and the port accessory on the panel, and described circuit board comprises following circuit:
High-frequency signal amplifies distribution module, receives the input of satellite and terrestrial television signal, and output electric property is connected in DVB-S receiving demodulation module and DVB-T receiving demodulation module;
DVB-S receiving demodulation module, input are electrically connected at above-mentioned high-frequency signal and amplify distribution module, and output electric property is connected in CPU main control chip unit;
DVB-T receiving demodulation module, input are electrically connected at above-mentioned high-frequency signal and amplify distribution module, and output electric property is connected in CPU main control chip unit;
CPU main control chip unit, input is electrically connected at above-mentioned DVB-S receiving demodulation module, DVB-T receiving demodulation module and power management module, output electric property is connected in LCD and drives display module and sound alarm module, and input and output are electrically connected at keyboard and state indicating member, memory cell;
Keyboard and state indicating member, input and output are electrically connected at above-mentioned CPU main control chip unit;
Memory cell, input and output are electrically connected at above-mentioned CPU main control chip unit;
LCD drives display module, and output electric property is connected in above-mentioned CPU main control chip unit;
Audible alarm module, output electric property are connected in above-mentioned CPU main control chip unit;
Power management module, input is electrically connected at above-mentioned CPU main control chip unit.
Further, the input and output of described CPU main control chip unit are electrically connected at the input/output interface unit, and described input/output interface unit is connected in the port accessory that is arranged on the panel.
Further, external serial ports keyboard of described keyboard and state indicating member and LED light, this LED light is arranged on the device panel.
Further, described memory cell comprises FLASH memory, eeprom memory and SDRAM memory.
Further, described LCD drives the external LCD display of display module.
Further, the audio frequency amplifier of described audible alarm module connects loud speaker, and this loud speaker is arranged on the device panel.
The utility model adopts as above technical scheme, the device of the dual test unification of a kind of satellite and terrestrial television signal is proposed, not only can show simultaneously that terrestrial television signal and satellite TV signal test simultaneously, make things convenient for debugging operations greatly, and possess LCD display and loudspeaker horn, can test effect intuitively in detail and express, improve testing efficiency greatly.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
Embodiment
Now with embodiment the utility model is further specified in conjunction with the accompanying drawings.
Consult shown in Figure 1ly, satellite of the present utility model and terrestrial television signal testing apparatus comprise the circuit board that is arranged in the crust of the device and the port accessory on the panel, and described circuit board comprises following circuit:
High-frequency signal amplifies distribution module 1, receives the input of satellite and terrestrial television signal, and output electric property is connected in DVB-S receiving demodulation module 2 and DVB-T receiving demodulation module 3.This unit amplifies, is divided into two-way after the Filtering Processing DVB-S satellite-signal and the DVB-T ground signal that antenna receives, and delivers to corresponding receiving demodulation module.
DVB-S receiving demodulation module 2, input are electrically connected at above-mentioned high-frequency signal and amplify distribution module 1, and output electric property is connected in CPU main control chip unit 4.Tuner adopts PHASE-LOCKED LOOP PLL TECHNIQUE to receive the DVB-S signal and down-converts to intermediate-freuqncy signal, deliver to the quadrature phase detector and decomposite I, Q two-way analog signal, enter demodulation module and carry out demodulation, via A/D conversion, QPSK demodulation, deinterleaving, RS decoding, channel error correction, output mpeg transport stream (TS code stream) digital signal.
DVB-T receiving demodulation module 3, input are electrically connected at above-mentioned high-frequency signal and amplify distribution module 1, and output electric property is connected in CPU main control chip unit 4.Tuner adopts the ground digital television signal of aerial transmission in PHASE-LOCKED LOOP PLL TECHNIQUE wireless receiving VHF or the uhf band, support 6MHz, 7MHz, the 8MHz bandwidth, signal enters demodulation module and carries out demodulation, via A/D conversion, channel demodulation, channel error correction, output mpeg transport stream (TS code stream) digital signal.
CPU main control chip unit 4, input is electrically connected at above-mentioned DVB-S receiving demodulation module 2, DVB-T receiving demodulation module 3 and power management module 10, output electric property is connected in LCD and drives display module 8 and sound alarm module 9, and input and output are electrically connected at keyboard and state indicating member 5, memory cell 6.Preferably, the input and output of described CPU main control chip unit 4 are electrically connected at input/output interface unit 7, and described input/output interface unit 7 is connected in the port accessory that is arranged on the panel, as expansion interface.The CPU main control chip unit 4 embedded audio decoders of looking, the code stream analysis processing unit, the MPEG video data is decoded, pass through video encoder, again through the vision signal of video processing circuits outputting standard form, the mpeg audio data are decoded, through audio frequency output processing circuit output simulated audio signal, signal bit stream is handled, calculate, analyze, extraction characterization signal power, the quality quality, the error rate, carrier-to-noise ratio, signal level, data such as frequency spectrum, by digital coding and conversion, use signal strips, numeral intuitively shows, and points out with alarm sound.
Keyboard and state indicating member 5, input and output are electrically connected at above-mentioned CPU main control chip unit 4, described keyboard and state indicating member 5 external serial ports keyboard and LED light, and this LED light is arranged on the device panel.Keyboard and state indicating member 5 are used for various operation inputs, parameter setting, and LED intuitively shows various operating states.
LCD drives display module 8, and output electric property is connected in above-mentioned CPU main control chip unit 4, and described LCD drives display module 8 external LCD display.LCD drives 8 pairs of vision signals of display module and carries out digital coding, drives LCD and shows, plays the TV programme picture signal, data messages such as shows signal field intensity, level, the error rate, carrier-to-noise ratio, frequency spectrum.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; in the spirit and scope of the present utility model that do not break away from appended claims and limited; can make various variations to the utility model in the form and details, be protection range of the present utility model.
Claims (6)
1. satellite and terrestrial television signal testing apparatus comprise the circuit board that is arranged in the crust of the device and the port accessory on the panel, and it is characterized in that: described circuit board comprises following circuit:
High-frequency signal amplifies distribution module (1), receives the input of satellite and terrestrial television signal, and output electric property is connected in DVB-S receiving demodulation module (2) and DVB-T receiving demodulation module (3);
DVB-S receiving demodulation module (2), input are electrically connected at above-mentioned high-frequency signal and amplify distribution module (1), and output electric property is connected in CPU main control chip unit (4);
DVB-T receiving demodulation module (3), input are electrically connected at above-mentioned high-frequency signal and amplify distribution module (1), and output electric property is connected in CPU main control chip unit (4);
CPU main control chip unit (4), input is electrically connected at above-mentioned DVB-S receiving demodulation module (2), DVB-T receiving demodulation module (3) and power management module (10), output electric property is connected in LCD and drives display module (8) and sound alarm module (9), and input and output are electrically connected at keyboard and state indicating member (5), memory cell (6);
Keyboard and state indicating member (5), input and output are electrically connected at above-mentioned CPU main control chip unit (4);
Memory cell (6), input and output are electrically connected at above-mentioned CPU main control chip unit (4);
LCD drives display module (8), and output electric property is connected in above-mentioned CPU main control chip unit (4);
Audible alarm module (9), output electric property are connected in above-mentioned CPU main control chip unit (4);
Power management module (10), input is electrically connected at above-mentioned CPU main control chip unit (4).
2. satellite according to claim 1 and terrestrial television signal testing apparatus, it is characterized in that: the input and output of described CPU main control chip unit (4) are electrically connected at input/output interface unit (7), and described input/output interface unit (7) is connected in the port accessory that is arranged on the panel.
3. satellite according to claim 1 and terrestrial television signal testing apparatus is characterized in that: described keyboard and external serial ports keyboard of state indicating member (5) and LED light, this LED light is arranged on the device panel.
4. satellite according to claim 1 and terrestrial television signal testing apparatus is characterized in that: described memory cell (6) comprises FLASH memory, eeprom memory and SDRAM memory.
5. satellite according to claim 1 and terrestrial television signal testing apparatus is characterized in that: described LCD drives the external LCD display of display module (8).
6. satellite according to claim 1 and terrestrial television signal testing apparatus is characterized in that: the audio frequency amplifier of described audible alarm module (9) connects loud speaker, and this loud speaker is arranged on the device panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202404793U CN201733378U (en) | 2010-06-24 | 2010-06-24 | Satellite and terrestrial television signal testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202404793U CN201733378U (en) | 2010-06-24 | 2010-06-24 | Satellite and terrestrial television signal testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201733378U true CN201733378U (en) | 2011-02-02 |
Family
ID=43524532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202404793U Expired - Fee Related CN201733378U (en) | 2010-06-24 | 2010-06-24 | Satellite and terrestrial television signal testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201733378U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103841414A (en) * | 2014-03-18 | 2014-06-04 | 珠海迈科电子科技有限公司 | Portable multifunctional signal measuring instrument for digital broadcasting television |
| CN104270633A (en) * | 2013-06-08 | 2015-01-07 | 无锡北斗星通信息科技有限公司 | Satellite digital television program playback quality detection system |
| CN105578156A (en) * | 2016-01-22 | 2016-05-11 | 珠海佳讯创新科技股份有限公司 | Digital satellite finder with high resolution display screen and functions of monitor and security protection |
-
2010
- 2010-06-24 CN CN2010202404793U patent/CN201733378U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270633A (en) * | 2013-06-08 | 2015-01-07 | 无锡北斗星通信息科技有限公司 | Satellite digital television program playback quality detection system |
| CN104270633B (en) * | 2013-06-08 | 2016-05-04 | 青岛橡胶谷知识产权有限公司 | Satellite digital TV program play quality detection system |
| CN103841414A (en) * | 2014-03-18 | 2014-06-04 | 珠海迈科电子科技有限公司 | Portable multifunctional signal measuring instrument for digital broadcasting television |
| CN105578156A (en) * | 2016-01-22 | 2016-05-11 | 珠海佳讯创新科技股份有限公司 | Digital satellite finder with high resolution display screen and functions of monitor and security protection |
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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: 20110202 Termination date: 20180624 |