CN201072865Y - Satellite receiver testing circuit - Google Patents

Satellite receiver testing circuit Download PDF

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Publication number
CN201072865Y
CN201072865Y CNU200720147498XU CN200720147498U CN201072865Y CN 201072865 Y CN201072865 Y CN 201072865Y CN U200720147498X U CNU200720147498X U CN U200720147498XU CN 200720147498 U CN200720147498 U CN 200720147498U CN 201072865 Y CN201072865 Y CN 201072865Y
Authority
CN
China
Prior art keywords
module
satellite receiver
test circuit
unit
receiver test
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU200720147498XU
Other languages
Chinese (zh)
Inventor
刘潮海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Coship Electronics Co Ltd
Original Assignee
Shenzhen Coship Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Coship Electronics Co Ltd filed Critical Shenzhen Coship Electronics Co Ltd
Priority to CNU200720147498XU priority Critical patent/CN201072865Y/en
Application granted granted Critical
Publication of CN201072865Y publication Critical patent/CN201072865Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a satellite receiver test circuit, which comprises a connector module, a status display module and a 22KHz carrier detect module. 22KHz carrier signals are transmitted to the 22KHz carrier detect module via the connector module and the 22KHz carrier detect module transmits the detection results to the status display module for display. The satellite receiver test circuit provided by the utility model can measure vertical/horizontal polarizing voltage and 22KHz carrier function simultaneously by adopting single satellite receiver test circuit; the production line is not arranged with a plurality of stations at the same time and a plurality of instruments are unnecessary to be replaced when one person tests, thereby facilitating development of test more convenient and improving production efficiency.

Description

The satellite receiver test circuit
Technical field
The utility model relates to test circuit, relates in particular to a kind of satellite receiver test circuit.
Background technology
When the production satellite receiver, need test the function of satellite receiver LNB interface, such as vertical/horizontal polarizing voltage, 22KHz carrier wave function etc.The method of testing of general production satellite receiver is according to function, go to survey with different instrument and meters one by one, as the voltage voltmeter, 22KHz carrier wave function 22KHz carrier wave diverter switch, when producing a plurality of stations will be set like this, perhaps a people will change a plurality of instruments when test.This method of testing production efficiency is low, cost is high.
The utility model content
The utility model provides a kind of satellite receiver test circuit, simplifies test step when purpose is to produce.
The utility model provides a kind of satellite receiver test circuit, comprise vertical/horizontal polarizing voltage detection module, connector module and state display module, also comprise the 22KHz carrier detection module, the 22KHz carrier signal transfers to the 22KHz carrier detection module by the connector module, and the 22KHz carrier detection module transfers to the state display module with testing result and shows.
Preferably, above-mentioned satellite receiver test circuit also comprises the load compensation module, and the load compensation module is connected with vertical/horizontal polarizing voltage detection module by the connector module.
Preferably, above-mentioned satellite receiver test circuit also comprises power module of voltage regulation, and power module of voltage regulation is connected with connector module, vertical/horizontal polarizing voltage detection module, 22KHz carrier detection module, load compensation module respectively.
Above-mentioned 22K detection module comprises coupling unit, amplifying unit, display unit, the 22KHz carrier signal is coupled by coupling unit, the 22KHz carrier signal of coupling unit output inputs to amplifying unit amplifies, and the testing result of amplifying unit output shows by display unit.
Preferably, above-mentioned coupling unit adopts capacitive coupling.
Preferably, above-mentioned amplifying unit adopts triode or amplifier to amplify.
Preferably, above-mentioned display unit adopts operational amplifier and diode, and operational amplifier driven for emitting lights led lighting shows.
Above-mentioned load compensation module comprises dummy load unit and compensating unit, and the dummy load unit is connected with compensating unit.
Preferably, above-mentioned dummy load unit employing resistance element.
Preferably, above-mentioned power module of voltage regulation adopts the LD1117 voltage adjuster.
The satellite receiver test circuit that the utility model provides, adopt single satellite receiver test circuit just energy while measuring vertical/horizontal polarization voltage, 22KHz carrier wave function, on the production line a plurality of stations need not be set simultaneously, a people also need not change a plurality of instruments when test, make development and testing convenient, improved the efficient of producing.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment;
Fig. 2 is the structural representation of another embodiment of the utility model;
Fig. 3 is the structural representation of the another embodiment of the utility model;
Fig. 4 is a preferably circuit diagram of the utility model connector module;
Fig. 5 is a preferably circuit diagram of the utility model vertical/horizontal polarizing voltage detection module;
Fig. 6 is a preferably circuit diagram of the utility model 22KHz carrier detection module;
Fig. 7 is a preferably circuit diagram of the utility model load compensation module;
Fig. 8 is a preferably circuit diagram of the utility model power module of voltage regulation.
The realization of the utility model purpose, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
With reference to Fig. 1, the structural representation of the utility model one embodiment is shown.The satellite receiver test circuit comprises connector module 101, vertical/horizontal polarization detection module 103,22KHz carrier detection module 102 and state display module 104.Connector module 101 is connected with 22KHz carrier detection module 102 with vertical/horizontal polarization detection module 103 respectively.Simultaneously, vertical/horizontal polarization detection module 103 is connected with state display module 104 respectively with 22KHz carrier detection module 102.104 pairs of testing results of state display module show.The polarizing voltage signal transfers to vertical/horizontal polarization detection module 103 by connector module 101 and detects, and vertical/horizontal polarization detection module 103 exports testing result to state display module 104 and shows.The 22KHz carrier signal transfers to 22KHz carrier detection module 102 by connector module 101 and detects, and 22KHz carrier detection module 102 exports testing result to state display module 104 and shows.
22KHz carrier detection module 102 comprises coupling unit, amplifying unit, display unit, the 22KHz carrier signal is coupled by coupling unit, the 22KHz carrier signal of coupling unit output inputs to amplifying unit amplifies, and the 22KHz carrier signal of amplifying unit output shows by display unit.Preferably, coupling unit adopts capacitive coupling.Preferably, amplifying unit adopts triode or amplifier to amplify.Preferably, display unit adopts operational amplifier and diode, and operational amplifier driven for emitting lights led lighting shows.
With reference to Fig. 2, among another embodiment of the utility model, the satellite receiver test circuit also comprises load compensation module 105.Load compensation module 105 is connected with connector module 101.
Load compensation module 105 comprises dummy load unit and compensating unit, and preferably, the dummy load unit adopts parallel way to be connected with compensating unit.
The voltage that satellite receiver is switched the vertical/horizontal polarization is respectively 13V/18V, the voltage of perpendicular polarization is low, the power of the power perpendicular polarization on same pure resistor load is littler than the power of horizontal polarization, so when using perpendicular polarization, suitably add heavy load, make test result more accurate by on the dummy load unit, increasing supplementary units.
With reference to Fig. 3, the structural representation of the another embodiment of the utility model is shown, the satellite receiver test circuit also comprises power module of voltage regulation 106, and power module of voltage regulation 106 is respectively connector module 101, vertical/horizontal polarizing voltage detection module 103,22KHz detection module 102, load compensation module 105 power supply is provided.
With reference to Fig. 4, preferably, the circuit that connector module 101 adopts, connector J1 is connected by the microstrip line on the PCB of present embodiment testing apparatus with J2, intermediate-freuqncy signal from LNB (satellite tuner) can be imported from connector J2, connect satellite receiver by connector J1, broadcast program simultaneously when testing like this; Inductance L 1, capacitor C 1, C10 form the band pass filter of 950MHZ-2150MHZ, prevent that the satellite receiver test circuit from disturbing intermediate-freuqncy signal; Connector J9 can be used for external equipment, as external equipments such as 22KHz switch, dummy loads.
With reference to Fig. 5, preferably, the circuit diagram that vertical/horizontal polarizing voltage detection module 103 adopts, perpendicular polarization (13V) circuit for testing voltage comprises operational amplifier U2-A, U3-A, resistance R 11, R12, R13, R14, R27, wherein resistance R 27, R13, R14 provide the comparative voltage of 13V, resistance R 11, R12 take a sample to polarizing voltage, by relatively detecting the voltage more than the 13V.Horizontal polarization (18V) circuit for testing voltage comprises operational amplifier U2-B, U3-C, resistance R 28, R29, R30, R31, R32, principle is with the 13V voltage detecting, for avoiding of the influence of 18V voltage, the 13V voltage detecting is locked by resistance R 7, diode D2 to the 13V voltage detecting.Show different polarization with LED 2, LED2 at last.
With reference to Fig. 6, preferably, the circuit diagram that the utility model 22KHz carrier detection module 102 adopts, 22KHz carrier test circuit comprise triode Q1, resistance R 6, R7, R8, diode D3, D4, capacitor C 7, C9,, amplifier U3-B, the 22KHz carrier signal is through capacitor C 7 couplings, diode D3, D4 shaping, triode Q1 amplification, the pulse of elimination 22KHz carrier wave again of diode D3, resistance R 8, capacitor C 9, last amplifier U3-B driving LED 3 is lighted.
With reference to Fig. 7, preferably, the circuit diagram that the utility model load compensation module 105 adopts, LED 1, resistance R 1 are formed the power supply indication of LNB power supply, and jumper connection connector J 3 wire jumpers can be selected the cement resistor dummy load on the module for use.Dummy load comprises resistance R 2, R3, R5, R5 is used for the load compensation of perpendicular polarization, the load compensation circuit comprises triode Q2, Q3, resistance R 4, R22, R23, when vertical voltage is 13V, drives the load that triode Q2 conducting connects resistance R 5 compensation perpendicular polarizations by triode Q3.
With reference to Fig. 8, preferably, the circuit diagram that the utility model power module of voltage regulation 106 adopts, power module of voltage regulation comprises amplifier U1, resistance R 15, R24, capacitor C 5, C6, electrochemical capacitor CE1, for the satellite receiver test circuit provides power supply.
The above only is a preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.

Claims (10)

1. satellite receiver test circuit, comprise vertical/horizontal polarizing voltage detection module, connector module and state display module, it is characterized in that, also comprise the 22KHz carrier detection module, the 22KHz carrier signal transfers to the 22KHz carrier detection module by the connector module, and the 22KHz carrier detection module transfers to the state display module with testing result and shows.
2. satellite receiver test circuit according to claim 1 is characterized in that, also comprises the load compensation module, and the load compensation module is connected with vertical/horizontal polarizing voltage detection module by the connector module.
3. satellite receiver test circuit according to claim 2, it is characterized in that, also comprise power module of voltage regulation, power module of voltage regulation is connected with connector module, vertical/horizontal polarizing voltage detection module, 22KHz carrier detection module, load compensation module respectively.
4. satellite receiver test circuit according to claim 1, it is characterized in that, described 22KHz carrier detection module comprises coupling unit, amplifying unit, display unit, the 22KHz carrier signal is coupled by coupling unit, the 22KHz carrier signal of coupling unit output inputs to amplifying unit amplifies, and the testing result of amplifying unit output shows by display unit.
5. satellite receiver test circuit according to claim 4 is characterized in that, described coupling unit adopts capacitive coupling.
6. satellite receiver test circuit according to claim 4 is characterized in that, described amplifying unit adopts triode or amplifier to amplify.
7. satellite receiver test circuit according to claim 4 is characterized in that, described display unit adopts operational amplifier and diode, and operational amplifier driven for emitting lights led lighting shows.
8. satellite receiver test circuit according to claim 2 is characterized in that, described load compensation module comprises dummy load unit and compensating unit, and the dummy load unit is connected with compensating unit.
9. satellite receiver test circuit according to claim 8 is characterized in that, described dummy load unit adopts resistance element.
10. satellite receiver test circuit according to claim 3 is characterized in that, described power module of voltage regulation adopts the LD1117 voltage adjuster.
CNU200720147498XU 2007-06-07 2007-06-07 Satellite receiver testing circuit Expired - Fee Related CN201072865Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU200720147498XU CN201072865Y (en) 2007-06-07 2007-06-07 Satellite receiver testing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU200720147498XU CN201072865Y (en) 2007-06-07 2007-06-07 Satellite receiver testing circuit

Publications (1)

Publication Number Publication Date
CN201072865Y true CN201072865Y (en) 2008-06-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNU200720147498XU Expired - Fee Related CN201072865Y (en) 2007-06-07 2007-06-07 Satellite receiver testing circuit

Country Status (1)

Country Link
CN (1) CN201072865Y (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102487450A (en) * 2010-12-02 2012-06-06 深圳市同洲电子股份有限公司 Test method for testing control function of satellite television signal receiver of set top box and system thereof
CN101729563B (en) * 2009-11-13 2012-07-18 航天东方红卫星有限公司 Distributed test control system suitable for small satellite
CN104469216A (en) * 2015-01-04 2015-03-25 安徽波维电子科技有限公司 C-band tuner facilitating noise coefficient regulation
WO2016086462A1 (en) * 2014-12-02 2016-06-09 深圳Tcl数字技术有限公司 Television and television feed detection method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101729563B (en) * 2009-11-13 2012-07-18 航天东方红卫星有限公司 Distributed test control system suitable for small satellite
CN102487450A (en) * 2010-12-02 2012-06-06 深圳市同洲电子股份有限公司 Test method for testing control function of satellite television signal receiver of set top box and system thereof
WO2016086462A1 (en) * 2014-12-02 2016-06-09 深圳Tcl数字技术有限公司 Television and television feed detection method
CN104469216A (en) * 2015-01-04 2015-03-25 安徽波维电子科技有限公司 C-band tuner facilitating noise coefficient regulation

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080611

Termination date: 20150607

EXPY Termination of patent right or utility model