CN204089830U - A kind of VHF transceiver combined test apparatus - Google Patents
A kind of VHF transceiver combined test apparatus Download PDFInfo
- Publication number
- CN204089830U CN204089830U CN201420082241.0U CN201420082241U CN204089830U CN 204089830 U CN204089830 U CN 204089830U CN 201420082241 U CN201420082241 U CN 201420082241U CN 204089830 U CN204089830 U CN 204089830U
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- vhf transceiver
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- vhf
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Abstract
The utility model discloses a kind of VHF transceiver combined test apparatus, comprise testboard, it also comprises attachment unit interface, switch, instrument connection and the indicator light and test circuit being located at and connecting successively in testboard, and the bnc interface to be connected with instrument connection, and described attachment unit interface is connected with VHF transceiver, described bnc interface is connected with a communication synthesis tester, and described testing circuit board is provided with linear detection circuit, 40dB attenuator test circuit and MIC testing circuit.The utility model only adopts attachment unit interface, switch, instrument connection, indicator light, testing circuit board etc. can to test VHF transceiver, has that cost is low, testing efficiency advantages of higher.
Description
Technical field
The utility model relates to experimental technique field, more particularly, and particularly a kind of VHF transceiver combined test apparatus.
Background technology
Very high frequency(VHF) (VHF) communication system provides the horizon communication of sound and data for unit, comprise aircraft during taking off, landing and aircraft by double-directional speech communication during control zone and between ground traffic control personnel and the double-directional speech communication etc. between aircraft and aircraft.And VHF transceiver is the core of whole communication system, when receiving, for receiving the radiofrequency signal of setpoint frequency, and by frequency conversion, demodulator circuit, producing audio signal and exporting.When launching, by the audio signal inputted from MIC, modulation is amplified, and produces and has enough powerful radiofrequency signal, by antenna transmission.Because transceiver is absolutely necessary one of parts in the communications.If often transmitted, cause the power tube of VHF transceiver very easily to burn out because launching overheated, therefore VHF transceiver failure rate is high.Therefore, be necessary that designing a kind of VHF transceiver combined test apparatus detects VHF transceiver.
Utility model content
The purpose of this utility model is to provide the VHF transceiver combined test apparatus that a kind of cost is low, testing efficiency is high.
In order to solve problem set forth above, the technical solution adopted in the utility model is: a kind of VHF transceiver combined test apparatus, comprise testboard, it also comprises attachment unit interface, switch, instrument connection and the indicator light and test circuit being located at and connecting successively in testboard, and the bnc interface to be connected with instrument connection, and described attachment unit interface is connected with VHF transceiver, described bnc interface is connected with a communication synthesis tester, and described testing circuit board is provided with linear detection circuit, 40dB attenuator test circuit and MIC testing circuit.
According to a preferred embodiment of the present utility model: the quantity of described attachment unit interface is three.
According to a preferred embodiment of the present utility model: the model of described communication synthesis tester is IFR 2948.
According to a preferred embodiment of the present utility model: described VHF transceiver is the VHF transceiver of Y5, Y5B or CESSNA type.
Compared with prior art, the beneficial effects of the utility model are: the utility model only adopts attachment unit interface, switch, instrument connection, indicator light and test circuit etc. can to test VHF transceiver, have that cost is low, testing efficiency advantages of higher.
Accompanying drawing explanation
Fig. 1 is front panel and the rear board machine drawing of VHF transceiver combined test apparatus of the present utility model.
Fig. 2 is the internal circuit diagram of testboard in VHF transceiver combined test apparatus of the present utility model.
Fig. 3 is the circuit diagram of VHF transceiver combined test apparatus neutral line testing circuit of the present utility model.
Fig. 4 is the circuit diagram of 40dB attenuator in VHF transceiver combined test apparatus of the present utility model.
Fig. 5 is MIC testing circuit figure in VHF transceiver combined test apparatus of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Consult shown in Fig. 1, the utility model provides a kind of VHF transceiver combined test apparatus, comprise testboard, be located at the attachment unit interface, switch, instrument connection, indicator light and the test circuit that connect successively in testboard, and the bnc interface to be connected with instrument connection, and attachment unit interface is connected with VHF transceiver, bnc interface is connected with a communication synthesis tester, and described testing circuit board is provided with linear detection circuit, 40dB attenuator test circuit and MIC testing circuit.
Above-mentioned switch is provided with the function be in flight course under different situations for simulated aircraft and selects, instrument connection is for monitoring the functional tests such as VHF transceiver voice, automatic gain, noise elimination, monitoring output, and the quantity of the instrument connection in the utility model is 8; Indicator light is used for the monitoring exported VHF transceiver power supply, and the quantity of bnc interface is three, and one of them is for the sensitivity test of VHF transceiver, launches carrier power to export, frequency accuracy, and tune power exports, and sidetone exports; The quantity of the attachment unit interface in the utility model is three.Like this, three attachment unit interface can carry out test connection to the VHF transceiver comprising different model.
Concrete, the model of communication synthesis tester is IFR 2948; I.e. the combining of BNC connector and IFR 2948 communication synthesis tester, can carry out the sensitivity of VHF transceiver, selectivity, the distortion factor and audio frequency response; The test of transmitter transmitting power, percentage modulation frequency.
The VHF transceiver that comprehensive experimental device of the present utility model can be tested is the VHF transceiver of the types such as Y5, Y5B or CESSNA.
Consult shown in Fig. 2, for the internal circuit diagram of testboard in VHF transceiver combined test apparatus of the present utility model, VHF transceiver, communication synthesis tester etc. mainly to be undertaken connecting by each pin by it, and concrete winding diagram can connect as required, repeats no more herein.
Consult shown in Fig. 3, be the circuit diagram of the linear detection circuit in the utility model, resistance R1 is wherein 10K Ω, plays the effect of current limliting, and diode D1 is 1N270, serves one-way conduction effect, and electric capacity C1 is 100pF, plays filtering every ground effect in EMI.The effect of resistance R2 and diode D2 ground connection is the effect playing protection, prevents from causing other test component to damage because electric current is excessive, also can reduce the noise shunt impact of high frequency simultaneously.Resistance R4 is swept resistance, by changing self-resistance, thus play the effect of control circuit, it coordinates with resistance R3 and can change size of current in circuit thus play protective circuit effect, simultaneously resistance R4 connects with resistance R3 and can change both end voltage and play dividing potential drop effect, be equivalent to a flow restricter, serve the effect of Limited Current; Above-mentioned part and inductance L 1 form closed-loop path, and when coil is by after electric current, in coil, form magnetic field induction, induced field can produce induced current to resist again by the electric current in coil.The Main Function of this linear detection circuit prevents exactly because electric current when launching is excessive and causes other parts damages.
Consult shown in Fig. 4, for the MIC in the utility model detects and the test circuit figure of 40dB attenuator, this is because the requirement of test VHF transceiver uses 50 Ω impedances and test frequency area requirement, therefore make a 40dB attenuator and can meet operating frequency, attenuation, power capacity, the requirement of return loss and power coefficient, the effect that in figure, resistance R6 plays is and input resistant matching, and resistance R5 is mainly from test job frequency, and power coefficient and power capacity are considered.
Above-described embodiment is the utility model preferably execution mode; but execution mode of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection range of the present utility model.
Claims (2)
1. a VHF transceiver combined test apparatus, comprise testboard, it is characterized in that: also comprise attachment unit interface, switch, instrument connection, indicator light and the testing circuit board being located at and connecting successively in testboard, and the bnc interface to be connected with instrument connection, and described attachment unit interface is connected with VHF transceiver, described bnc interface is connected with a communication synthesis tester, and described testing circuit board is provided with linear detection circuit, 40dB attenuator test circuit and MIC testing circuit; The model of described communication synthesis tester is IFR 2948; Described VHF transceiver is the VHF transceiver of Y5, Y5B or CESSNA type.
2. VHF transceiver combined test apparatus according to claim 1, is characterized in that: the quantity of described attachment unit interface is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420082241.0U CN204089830U (en) | 2014-02-25 | 2014-02-25 | A kind of VHF transceiver combined test apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420082241.0U CN204089830U (en) | 2014-02-25 | 2014-02-25 | A kind of VHF transceiver combined test apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204089830U true CN204089830U (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420082241.0U Expired - Fee Related CN204089830U (en) | 2014-02-25 | 2014-02-25 | A kind of VHF transceiver combined test apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204089830U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107580470A (en) * | 2015-01-15 | 2018-01-12 | 皇家飞利浦有限公司 | Instantaneous delivery lays in computer tomography |
-
2014
- 2014-02-25 CN CN201420082241.0U patent/CN204089830U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107580470A (en) * | 2015-01-15 | 2018-01-12 | 皇家飞利浦有限公司 | Instantaneous delivery lays in computer tomography |
| CN107580470B (en) * | 2015-01-15 | 2021-06-22 | 皇家飞利浦有限公司 | Instantaneous flow reserve-computed tomography |
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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: 20150107 Termination date: 20200225 |