CN201733379U - Portable terrestrial television signal testing device - Google Patents
Portable terrestrial television signal testing device Download PDFInfo
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- CN201733379U CN201733379U CN2010202404882U CN201020240488U CN201733379U CN 201733379 U CN201733379 U CN 201733379U CN 2010202404882 U CN2010202404882 U CN 2010202404882U CN 201020240488 U CN201020240488 U CN 201020240488U CN 201733379 U CN201733379 U CN 201733379U
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Abstract
The utility model relates to the field of radio frequency devices, in particular to an electronic testing device for radio frequency signals, which is an electronic device aiming at testing satellite television signals. The portable terrestrial television signal testing device comprises a circuit board arranged in a shell of the device, and a port accessory on a panel, wherein the circuit board consists of a tuner module, a DVB-T/DVB-T2 modem module, a CPU main control chip unit, a keyboard and status indication unit, a memory unit, an input/output interface unit, an LCD driving display module, an audible alarm module and an power management module. The utility model provides a device integrates double testing for first generation and second generation of terrestrial television signals, not only can be compatible with the testing of the first generation and the second generation of terrestrial television signals so as to greatly facilitate debugging operation, but also is provided with an LCD display screen and a speaker horn so as to intuitively express testing results in detail, and greatly improve 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 the terrestrial television signal test.
Background technology
Domestic television set needs to install television antenna to be used for reception in order to receive the terrestrial television signal of TV station's launching tower clearly.The terrestrial television signal that has is the digital TV in high resolution signal, not only needs to fix up an aerial wire, and also needs to install the terrestrial television signal receiver.And the performance parameters of antenna and signal receiver will influence the definition of TV programme greatly, therefore for the needs of TV and CATV Project installation and measuring, it is the measuring instrument that aims at TV and cable TV technical staff and engineering staff's design that a kind of terrestrial television signal testing apparatus is arranged.
Existing terrestrial television signal testing apparatus can not obtain the details of digital television program content, can only detect the existence of digital TV ground signal, whether the signal that can not know for sure correctly obtains, because antenna can receive a lot of signals, but the signal strength signal intensity quality can be uneven, existing equipment can not accomplish selectively to adjust the optimum state of signal specific, but the blind right approximate state point of adjusting to; Therefore be not the accurate test to the Digital Television ground signal, to adjust the parameter of user's ground signal receiver also be inaccurate to test result certainly in view of the above, thereby be not easy to receive television image clearly; Can only debug repeatedly, efficient is low, and effect can not guarantee.On the other hand, existing terrestrial television signal testing apparatus can only be tested first generation terrestrial television signal, and can not test second generation terrestrial television signal.
The utility model content
Therefore, at above-mentioned deficiency, the utility model proposes a kind of can be to the device of the dual test unification of the first generation and second generation terrestrial television signal, and possess the testing apparatus of DCO effect intuitively.
The technical solution of the utility model is:
Portable type ground TV signal testing apparatus of the present utility model comprises 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:
Tuner module receives the terrestrial television signal input, and output electric property is connected in the DVB-T/DVB-T2 demodulator module;
The DVB-T/DVB-T2 demodulator module, input is electrically connected at above-mentioned tuner 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-T/DVB-T2 demodulator 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, a kind of device to the first generation and the dual test unification of second generation terrestrial television signal is proposed, not only can the compatibility test first generation and the signal testing of second generation terrestrial television signal, 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, portable type ground TV signal testing apparatus of the present utility model comprises 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:
DVB-T/DVB-T2 demodulator module 2, input is electrically connected at above-mentioned tuner module 1, output electric property is connected in CPU main control chip unit 3, the signal of DVB-T/DVB-T2 demodulator module 2 through signal via A/D conversion, channel demodulation, channel error correction, output mpeg transport stream (TS code stream) digital signal.
CPU main control chip unit 3, input is electrically connected at above-mentioned DVB-T/DVB-T2 demodulator module 2 and power management module 9, output electric property is connected in LCD and drives display module 7 and sound alarm module 8, and input and output are electrically connected at keyboard and state indicating member 4, memory cell 5.Preferably, the input and output of described CPU main control chip unit 4 are electrically connected at input/output interface unit 6, and described input/output interface unit 6 is connected in the port accessory that is arranged on the panel, as expansion interface.The CPU main control chip unit 3 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 4, input and output are electrically connected at above-mentioned CPU main control chip unit 4, described keyboard and state indicating member 4 external serial ports keyboard and LED light, and this LED light is arranged on the device panel.Keyboard and state indicating member 4 are used for various operation inputs, parameter setting, and LED intuitively shows various operating states.
Memory cell 5, input and output are electrically connected at above-mentioned CPU main control chip unit 4, and described memory cell 5 comprises FLASH memory, eeprom memory and SDRAM memory.The FLASH memory is used for the storage running program; Eeprom memory is used to store user's open state, channel parameter; The SDRAM memory is used to store audio/video decoding data, OSD bitmap, the data when going back the application storing operation simultaneously.
LCD drives display module 7, and output electric property is connected in above-mentioned CPU main control chip unit 4, and described LCD drives display module 7 external LCD display.LCD drives 7 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.
Audible alarm module 8, output electric property are connected in above-mentioned CPU main control chip unit 4.The audio frequency amplifier of described audible alarm module 8 connects loud speaker, and this loud speaker is arranged on the device panel.Audible alarm module 8 is used to play TV programme sound, the operating state alarm.
Power management module 9, input is electrically connected at above-mentioned CPU main control chip unit 4.Power management module 9 is used for the supplies management of complete machine power supply, provides and respectively organizes operating voltage and antenna feed, to battery charging and discharging control, protection, detection.
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. portable type ground TV signal testing apparatus comprises being arranged at interior circuit board of crust of the device and the port accessory on the panel, and it is characterized in that: described circuit board comprises following circuit:
Tuner module (1) receives the terrestrial television signal input, and output electric property is connected in DVB-T/DVB-T2 demodulator module (2);
DVB-T/DVB-T2 demodulator module (2), input is electrically connected at above-mentioned tuner module (1), and output electric property is connected in CPU main control chip unit (3);
CPU main control chip unit (3), input is electrically connected at above-mentioned DVB-T/DVB-T2 demodulator module (2) and power management module (9), output electric property is connected in LCD and drives display module (7) and sound alarm module (8), and input and output are electrically connected at keyboard and state indicating member (4), memory cell (5);
Keyboard and state indicating member (4), input and output are electrically connected at above-mentioned CPU main control chip unit (3);
Memory cell (5), input and output are electrically connected at above-mentioned CPU main control chip unit (3);
LCD drives display module (7), and output electric property is connected in above-mentioned CPU main control chip unit (3);
Audible alarm module (8), output electric property are connected in above-mentioned CPU main control chip unit (3);
Power management module (9), input is electrically connected at above-mentioned CPU main control chip unit (3).
2. portable type ground TV signal testing apparatus according to claim 1, it is characterized in that: the input and output of described CPU main control chip unit (3) are electrically connected at input/output interface unit (6), and described input/output interface unit (6) is connected in the port accessory that is arranged on the panel.
3. portable type ground TV signal testing apparatus according to claim 1 is characterized in that: described keyboard and external serial ports keyboard of state indicating member (4) and LED light, this LED light is arranged on the device panel.
4. portable type ground TV signal testing apparatus according to claim 1 is characterized in that: described memory cell (5) comprises FLASH memory, eeprom memory and SDRAM memory.
5. portable type ground TV signal testing apparatus according to claim 1 is characterized in that: described LCD drives the external LCD display of display module (7).
6. portable type ground TV signal testing apparatus according to claim 1 is characterized in that: the audio frequency amplifier of described audible alarm module (8) connects loud speaker, and this loud speaker is arranged on the device panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202404882U CN201733379U (en) | 2010-06-24 | 2010-06-24 | Portable terrestrial television signal testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202404882U CN201733379U (en) | 2010-06-24 | 2010-06-24 | Portable terrestrial television signal testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201733379U true CN201733379U (en) | 2011-02-02 |
Family
ID=43524533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202404882U Expired - Fee Related CN201733379U (en) | 2010-06-24 | 2010-06-24 | Portable terrestrial television signal testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201733379U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 CN2010202404882U patent/CN201733379U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |