CN105429714A - T/R assembly tester and security verification method thereof - Google Patents
T/R assembly tester and security verification method thereof Download PDFInfo
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- CN105429714A CN105429714A CN201510737622.7A CN201510737622A CN105429714A CN 105429714 A CN105429714 A CN 105429714A CN 201510737622 A CN201510737622 A CN 201510737622A CN 105429714 A CN105429714 A CN 105429714A
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Abstract
The invention provides a T/R assembly tester and a security verification method thereof. A single-pole double-throw switch is used in the tester to separate an emission output channel from a reception input channel physically, an attenuator or coupler is arranged in the emission output channel, and thus, test for the noise coefficient of the reception channel and the standing-wave ratio of an input port is not influenced by high insertion loss of the channel. Compared with a present tester, the testing efficiency is improved, influence of repeated lining on the test accuracy and repeatability is reduced, the amount of test accessories as the attenuator or coupler is reduced, the construction cost of the device is reduced, and convenience is provided for integration of the device. In security verification before use of the T/R assembly tester, a switching state dwell vessel is used to inquire the connection state of switches, it is ensured that each switch is correct in the connection position, a miniwatt low-power excitation signal is used to verify connection of the tester, the tester is prevented from burnout when the switches have faults, and the security of the tester is improved.
Description
Technical field
The present invention relates to T/R module testing field, be specifically related to a kind of T/R component test device and equipment safety method of calibration.
Background technology
Mainly comprise transmission channel, receive path and drived control three parts in T/R assembly, also have the component interface parts such as radio frequency input and output, low-frequency connector in addition.Transmission channel mainly completes the amplification of rf excitation signal, and exports feeder network to; The echo-signal that antenna receives by receive path is amplified, and ensures lower noise factor; The transmit-receive switch of assembly switches and phase place, decay control completed by drive control part.
T/R assembly has that passage is many, high or low power depositing and the features such as multiplexed port, and index kind is many, needs multiple tester just can complete test.So-called high or low power is also deposited, and namely transmission channel power output is large, receive path power is little; With regard to multiplexed port, namely launch output port and namely receive input port, launch input port and namely receive output port, it is the working system of a timesharing certainly.Therefore, the test of T/R assembly realizes comparatively difficulty, also very complicated, and mostly adopt test macro to complete test, this just needs to nurse one's health receiving and transmitting signal, utilizes switching network to realize test channel simultaneously and automatically switches.
Because T/R assembly transmit signal power is general larger, cannot input in instrument and directly test, generally first connect attenuator or coupler at each transmitting output port at present, power is down to a reasonable level, and then inputs in tester (as vector network analyzer, power analyzer and frequency spectrograph etc.) through the switching of switching network and carry out transmission channel performance parameter test.The method of this low-power level signal that directly carried out by high-power signal decaying/be coupled as can effectively not burnt by relay testing instrument.For the test of receive path performance parameter, principle is substantially also identical, just required instrument kind is different with test channel.
Although prior art can solve the test of T/R assembly transmitting-receiving parameter, there is following several shortcoming:
1. because attenuator or coupler are as a part for test channel, and to launch output channel and receive input channel be fractional reuse, thus cause passage insertion loss larger.When receive path is tested, if do not dismantle the test accessories such as attenuator or coupler, so just there will be cannot test noise coefficient and the problem receiving input port standing-wave ratio.Concrete reason is:
A) excessive passage insertion loss is by reducing the measurement sensitivity of acoustic meter, if passage insertion loss is greater than 20dB, the standard noise power that noise source exports will lower than acoustic meter receiving sensitivity, and noise factor test cannot be carried out.And in concrete engineering practice, as long as the power output of T/R assembly transmission channel is greater than 50W (peak value), passage insertion loss generally will be greater than 20dB.
B) it is same because the insertion loss of passage is excessive, the vector network analyzer received needed for the test of input port standing-wave ratio also there will be the situation that useless source leakage signal may be also also large than useful reflection coupling signal power, this cannot adopt calibrating mode to eliminate the effects of the act, cause reception input port standing-wave ratio test result and actual value deviation comparatively large, cannot accept and believe.
2. need dismounting attenuator or coupler at noise factor with when receiving the test of input port standing-wave ratio, this also have impact on testing efficiency, is also degrading test accuracy and repeatability index.
3., when T/R assembly number of channels is more, each passage will connect an attenuator or coupler, and this also increases the difficulty of the system integration, and system Construction cost is also higher.
Summary of the invention
If the first object of the present invention not to be dismantled attenuator or coupler for existing T/R component test device, then noise factor and reception input port standing-wave ratio cannot be tested, and once disassemble attenuator or coupler, the problem of the testing efficiency of device, accuracy and repeatability can be affected again, and the problem that existing T/R component test device construction cost is high, the invention provides a kind of T/R component test device.
The present invention adopts following technical scheme:
A kind of T/R component test device, comprise the detecting instrument be connected successively, first multiselect switch, second multiselect switch and T/R assembly, also comprise the 3rd multiselect switch and the first single-pole double-throw switch (SPDT), described T/R assembly is connected with the 3rd multiselect switch, 3rd multiselect switch is connected with the moved end on the first single-pole double-throw switch (SPDT), on first single-pole double-throw switch (SPDT) first not moved end be connected with the 4th multiselect switch by attenuator or coupler, 4th multiselect switch is connected with to launch and exports tester, on first single-pole double-throw switch (SPDT) second not moved end be connected with the 5th multiselect switch, 5th multiselect switch is connected with and receives input test instrument.
Preferably, described detecting instrument comprises vector network analyzer, signal generator, spectrum analyzer and Noise Factor Analyzer, and described transmitting exports tester and comprises power analyzer, and described reception input test instrument comprises noise source.
Preferably, also comprise the second single-pole double-throw switch (SPDT), 3rd single-pole double-throw switch (SPDT) and the 4th single-pole double-throw switch (SPDT), first port of described vector network analyzer is connected with the first multiselect switch, second port of vector network analyzer is connected with the moved end of the second single-pole double-throw switch (SPDT), two of second single-pole double-throw switch (SPDT) not moved end connect the 4th multiselect switch and the 5th multiselect switch respectively, signal generator is connected with the moved end of the 3rd single-pole double-throw switch (SPDT), two of 3rd single-pole double-throw switch (SPDT) not moved end connect the first multiselect switch and the 5th multiselect switch respectively, spectrum analyzer is connected with the moved end of the 4th single-pole double-throw switch (SPDT), two of 4th single-pole double-throw switch (SPDT) not moved end connect the first multiselect switch and the 4th multiselect switch respectively.
Preferably, described first multiselect switch, the second multiselect switch, the 3rd multiselect switch, the 4th multiselect switch, the 5th multiselect switch, the first single-pole double-throw switch (SPDT), the second single-pole double-throw switch (SPDT), the 3rd single-pole double-throw switch (SPDT) and the 4th single-pole double-throw switch (SPDT) are all configured with an on off state register.
The second object of the present invention there is provided the security verification method of above-described a kind of T/R component test device.
A security verification method for T/R component test device, comprising:
Step 1: inquiry on off state, on off state register S
iin the diverse location S of different flag bit each switch corresponding
id
j, S
ito the label of inductive switch, D
jto the location label in inductive switch, whether inquire about all switches according on off state register is placed on correct link position, if the display of on off state register is correct to the link position of inductive switch, then position switching control is not carried out to this switch, if the link position mistake of on off state register display to inductive switch, then position switching control is carried out to this switch, this switch is connected on correct position, and the flag bit in corresponding on off state register is set;
Step 2: calculate pumping signal power, pumping signal power is the transmitting power of T/R assembly and the difference of T/R assembly transmitting gain, and the transmitting power of T/R assembly is not more than 20dBm;
Step 3:T/R component test device connectivity checking, pumping signal power in T/R assembly in input step 2, test result is obtained in signal testing mechanism, test result and desired value are compared, if comparative result is in the scope that error allows, then prove that T/R component test device is communicated with successfully, otherwise think that T/R component test device is communicated with unsuccessfully;
Step 4: terminate equipment safety check test.
The beneficial effect that the present invention has is:
The invention provides a kind of T/R component test device, this device introduces a single-pole double-throw switch (SPDT), transmitting output channel and reception input channel are carried out physical separation, attenuator or coupler are built in and launch in output channel, the noise factor of receive path and the test of input port standing-wave ratio can not be affected because passage insertion loss is large like this.Compared with existing testing apparatus, improve testing efficiency, decrease repetition line to test accuracy and conforming impact, and decrease the quantity of the test accessories such as attenuator or coupler, reduce the construction cost of device, facilitate the integrated of device.
The security verification method of T/R component test device, query manipulation is carried out by the connected state of on off state register pair switch, ensure that the link position of each switch is correct, then the connectedness of small-power low-frequency excitation signal authentication device is utilized, during guarantee switch fault, tester is not burnt, ensure the normal operation of test process, improve the fail safe of device.
Accompanying drawing explanation
Fig. 1 is the structural representation of T/R component test device provided by the invention.
Fig. 2 is the connection diagram of the second single-pole double-throw switch (SPDT).
Fig. 3 is the connection diagram of the 3rd single-pole double-throw switch (SPDT).
Fig. 4 is the connection diagram of the 4th single-pole double-throw switch (SPDT).
Embodiment
Below in conjunction with accompanying drawing, the present invention will be described in detail:
Embodiment 1
Composition graphs 1 to Fig. 4, a kind of T/R component test device, comprises the detecting instrument, the first multiselect K switch 1, second multiselect K switch 2 and the T/R assembly that are connected, also comprises the 3rd multiselect K switch 3 and the first single-pole double-throw switch (SPDT) K4.
T/R assembly is connected with the 3rd multiselect K switch 3,3rd multiselect K switch 3 is connected with the moved end on the first single-pole double-throw switch (SPDT) K4, on first single-pole double-throw switch (SPDT) K4 first not moved end be connected with the 4th multiselect K switch 5 by attenuator or coupler T1,4th multiselect K switch 5 is connected with to launch and exports tester, on first single-pole double-throw switch (SPDT) K4 second not moved end be connected with the 5th multiselect K switch the 6, five multiselect switch and be connected with and receive input test instrument.
Detecting instrument comprises vector network analyzer, signal generator 12, spectrum analyzer 13 and Noise Factor Analyzer, launches output tester and comprises power analyzer, receive input test instrument and comprise noise source.Vector network analyzer, signal generator and spectrum analyzer are the testers that transceiver channel shares.
This testing apparatus also comprises the second single-pole double-throw switch (SPDT) K7, 3rd single-pole double-throw switch (SPDT) K8 and the 4th single-pole double-throw switch (SPDT) K9, first port of described vector network analyzer is connected with the port one of the first multiselect switch, second port one 1 of vector network analyzer is connected with the moved end of the second single-pole double-throw switch (SPDT), two of second single-pole double-throw switch (SPDT) not moved end connect the port 5 of the 4th multiselect switch and the port 8 of the 5th multiselect switch respectively, signal generator 12 is connected with the moved end of the 3rd single-pole double-throw switch (SPDT), two of 3rd single-pole double-throw switch (SPDT) not moved end connect the port 3 of the first multiselect switch and the port 9 of the 5th multiselect switch respectively, spectrum analyzer 13 is connected with the moved end of the 4th single-pole double-throw switch (SPDT), two of 4th single-pole double-throw switch (SPDT) not moved end connect the port 2 of the first multiselect switch and the port 6 of the 4th multiselect switch respectively.
Noise Factor Analyzer is connected with the port 4 of the first multiselect switch, and power analyzer is connected with the port 7 of the 4th multiselect switch, and noise source is connected with the port one 0 of the 5th multiselect switch.
First multiselect K switch 1, second multiselect K switch 2, the 3rd multiselect K switch 3, first single-pole double-throw switch (SPDT) K4, the 4th multiselect K switch 5, the 5th multiselect K switch 6, second single-pole double-throw switch (SPDT) K7, the 3rd single-pole double-throw switch (SPDT) K8 and the 4th single-pole double-throw switch (SPDT) K9 are all configured with an on off state register.
Embodiment 2
The security verification method of a kind of T/R component test device of above-described embodiment 1, comprising:
Step 1: inquiry on off state, on off state register comprises S
1, S
2, S
3, S
4, S
5, S
6, S
7, S
8and S
9, S
1corresponding first multiselect K switch 1, S
2corresponding second multiselect K switch 2, S
3corresponding 3rd multiselect K switch 3, S
4corresponding first single-pole double-throw switch (SPDT) K4, S
5corresponding 4th multiselect K switch 5, S
6corresponding 5th multiselect K switch 6, S
7corresponding second single-pole double-throw switch (SPDT) K7, S
8corresponding 3rd single-pole double-throw switch (SPDT) K8, S
9corresponding 4th single-pole double-throw switch (SPDT) K9; The diverse location S of each switch corresponding of the different flag bit on off state register
id
j, as shown in Figure 1, the S of the corresponding on off state register in position of the first multiselect switch
1d
4, the S of the corresponding on off state register in position of the second multiselect switch
2d
1, the S of the corresponding on off state register in position of the 3rd multiselect switch
3d
4, the S of the corresponding on off state register in position of the first single-pole double-throw switch (SPDT)
4d
2, the S of the corresponding on off state register in position of the 4th multiselect switch
5d
1, the S of the corresponding on off state register in position of the 5th multiselect switch
6d
1; Whether inquire about all switches according on off state register is placed on correct link position, if the display of on off state register is correct to the link position of inductive switch, then position switching control is not carried out to this switch, if the link position mistake of on off state register display to inductive switch, then position switching control is carried out to this switch, this switch is connected on correct position, and the flag bit in corresponding on off state register is set;
Step 2: calculate pumping signal power, pumping signal power is the transmitting power of T/R assembly and the difference of T/R assembly transmitting gain, and the transmitting power of T/R assembly is not more than 20dBm;
Step 3:T/R component test device connectivity checking, pumping signal power in T/R assembly in input step 2, test result is obtained in signal testing mechanism, test result and desired value are compared, if comparative result is in the scope that error allows, then prove that T/R component test device is communicated with successfully, otherwise think that T/R component test device is communicated with unsuccessfully;
Step 4: terminate equipment safety check test.
A kind of T/R component test device provided by the invention, improves testing efficiency, without the need to dismantling the large power test annexes such as attenuator, decreasing the quantity of the test accessories such as attenuator or coupler, reducing the construction cost of device, facilitate the integrated of device.Security verification before testing apparatus uses, the instrument that can effectively avoid switch fault to cause burns, and ensure that equipment safety runs reliably.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited in above-mentioned citing, and the change that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement also should belong to protection scope of the present invention.
Claims (5)
1. a T/R component test device, comprise the detecting instrument be connected successively, first multiselect switch, second multiselect switch and T/R assembly, it is characterized in that, also comprise the 3rd multiselect switch and the first single-pole double-throw switch (SPDT), described T/R assembly is connected with the 3rd multiselect switch, 3rd multiselect switch is connected with the moved end on the first single-pole double-throw switch (SPDT), on first single-pole double-throw switch (SPDT) first not moved end be connected with the 4th multiselect switch by attenuator or coupler, 4th multiselect switch is connected with to launch and exports tester, on first single-pole double-throw switch (SPDT) second not moved end be connected with the 5th multiselect switch, 5th multiselect switch is connected with and receives input test instrument.
2. a kind of T/R component test device according to claim 1, it is characterized in that, described detecting instrument comprises vector network analyzer, signal generator, spectrum analyzer and Noise Factor Analyzer, described transmitting exports tester and comprises power analyzer, and described reception input test instrument comprises noise source.
3. a kind of T/R component test device according to claim 2, it is characterized in that, also comprise the second single-pole double-throw switch (SPDT), 3rd single-pole double-throw switch (SPDT) and the 4th single-pole double-throw switch (SPDT), first port of described vector network analyzer is connected with the first multiselect switch, second port of vector network analyzer is connected with the moved end of the second single-pole double-throw switch (SPDT), two of second single-pole double-throw switch (SPDT) not moved end connect the 4th multiselect switch and the 5th multiselect switch respectively, signal generator is connected with the moved end of the 3rd single-pole double-throw switch (SPDT), two of 3rd single-pole double-throw switch (SPDT) not moved end connect the first multiselect switch and the 5th multiselect switch respectively, spectrum analyzer is connected with the moved end of the 4th single-pole double-throw switch (SPDT), two of 4th single-pole double-throw switch (SPDT) not moved end connect the first multiselect switch and the 4th multiselect switch respectively.
4. a kind of T/R component test device according to claim 3, it is characterized in that, described first multiselect switch, the second multiselect switch, the 3rd multiselect switch, the 4th multiselect switch, the 5th multiselect switch, the first single-pole double-throw switch (SPDT), the second single-pole double-throw switch (SPDT), the 3rd single-pole double-throw switch (SPDT) and the 4th single-pole double-throw switch (SPDT) are all configured with an on off state register.
5. the security verification method of a kind of T/R component test device according to claim 4, is characterized in that, comprising:
Step 1: inquiry on off state, on off state register S
iin the diverse location S of different flag bit each switch corresponding
id
j, S
ito the label of inductive switch, D
jto the location label in inductive switch, whether inquire about all switches according on off state register is placed on correct link position, if the display of on off state register is correct to the link position of inductive switch, then position switching control is not carried out to this switch, if the link position mistake of on off state register display to inductive switch, then position switching control is carried out to this switch, this switch is connected on correct position, and the flag bit in corresponding on off state register is set;
Step 2: calculate pumping signal power, pumping signal power is the transmitting power of T/R assembly and the difference of T/R assembly transmitting gain, and the transmitting power of T/R assembly is not more than 20dBm;
Step 3:T/R component test device connectivity checking, pumping signal power in T/R assembly in input step 2, test result is obtained in signal testing mechanism, test result and desired value are compared, if comparative result is in the scope that error allows, then prove that T/R component test device is communicated with successfully, otherwise think that T/R component test device is communicated with unsuccessfully;
Step 4: terminate equipment safety check test.
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| CN107490738A (en) * | 2017-08-18 | 2017-12-19 | 湖南时变通讯科技有限公司 | A kind of radio-frequency devices test system |
| CN109490860A (en) * | 2018-12-29 | 2019-03-19 | 中电科仪器仪表有限公司 | System protection circuit and method in a kind of high-power transmitting-receiving subassembly test |
| CN109782101A (en) * | 2019-03-13 | 2019-05-21 | 海检检测有限公司 | A kind of calibration equipment and method of calibration for the test of automotive electronics conducted immunity |
| CN109782101B (en) * | 2019-03-13 | 2021-09-24 | 海检检测有限公司 | Calibration device and calibration method for automobile electronic conduction immunity test |
| CN111934798A (en) * | 2020-08-10 | 2020-11-13 | 河北电信设计咨询有限公司 | User-centered RRU module capable of dynamically allocating channels and channel dynamic allocation method thereof |
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| CN115314074A (en) * | 2021-07-28 | 2022-11-08 | 南京新频点电子科技有限公司 | Comprehensive performance test method for TR (transmitter-receiver) component |
| CN115314074B (en) * | 2021-07-28 | 2024-05-17 | 南京新频点电子科技有限公司 | Comprehensive test method for TR (transmitter-receiver) component performance |
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