Digital TR assembly automatic emission phase test method and system

Abstract

The invention discloses an automatic transmitting phase testing method and system for a digital TR assembly, and the method comprises the steps: generating baseband dot frequency data needed by the testing of the digital TR assembly through automatic testing equipment, packaging the baseband dot frequency data, and transmitting the packaged baseband dot frequency data to the digital TR assembly; meanwhile, baseband dot frequency data are converted into radio frequency analog signals, and the radio frequency analog signals are sent to one port of the vector network analyzer through the switch matrix; the digital TR assembly converts the baseband dot frequency data to obtain a radio frequency signal, and sends the radio frequency signal to the other port of the vector network analyzer through the switch matrix; the vector network analyzer compares the received radio frequency analog signal with the radio frequency signal to obtain a transmitting phase consistency test result; and controlling the switch matrix to be sequentially switched to each radio frequency port of the digital TR assembly until the test of all the radio frequency ports of the digital TR assembly is completed, generating a reference signal through the digital signal processing equipment, and realizing the automatic test of the radio frequency ports of the digital TR assembly.

Description

Technical Field

[0001] The present invention relates to the field of automated testing technology, and in particular to a method and system for automatically testing a digital TR component transmitting phase. Background Art

[0002] In the automated test system of RF devices, various test equipment can generally only receive RF analog signals. This is because the input and output ports of the RF devices to be tested are all RF signals. However, with the development of digitization, many RF devices to be tested have been digitized. Therefore, the test equipment can no longer directly measure the RF devices to be tested. For example, in the existing phase consistency test method of TR components, the input and output signals of the TR components are RF signals. During the test, the vector network analyzer can perform the test normally, and often calculates the phase consistency based on the value of a certain channel as the reference value. When the existing TR components are gradually transformed into digital TR components, it is impossible to measure the phase of the digital TR components directly using a vector network analyzer. Therefore, how to perform phase consistency test on digital TR components is a problem that needs to be solved. Summary of the invention

[0003] The purpose of the present invention is to provide a method and system for automatic transmission phase testing of a digital TR component. By adding a digital signal processing device, a reference signal is generated and transmitted back to a vector network analyzer and a digital TR component respectively. The vector network analyzer performs a transmission phase consistency test based on the measured RF signal transmitted back from the digital TR component and the RF analog signal.

[0004] To achieve the above objectives, this application provides the following solutions:

[0005] On the one hand, the present application provides a method for automatically testing a digital TR component transmission phase, comprising the following steps:

[0006] S1. Open the automatic test program, set the vector network analyzer to the receiver mode, and control the digital TR component and the digital signal processing device to switch the test mode to the transmission mode;

[0007] S2, the automatic test equipment generates the baseband frequency data required for the digital TR component test and sends the baseband frequency data to the digital TR component after packaging, and converts the baseband frequency data into a radio frequency analog signal and sends it to a port of the vector network analyzer through the switch matrix;

[0008] S3, the digital TR component converts the baseband frequency data to obtain a radio frequency signal, and sends the radio frequency signal to another port of the vector network analyzer through the switch matrix;

[0009] S4. The vector network analyzer compares the received RF analog signal with the RF signal to obtain a transmission phase consistency test result;

[0010] S5. Control the switch matrix to switch to each RF port of the digital TR component in turn until the test of all RF ports of the digital TR component is completed.

[0011] In some specific implementations, the process of generating baseband frequency data in step S2 is:

[0012] S21. Determine the beam weight according to the transmit phase consistency test item of the digital TR component and select the carrier frequency;

[0013] S22. Send the beam weight and carrier frequency to a digital signal processing device. The digital signal processing device performs IQ modulation on the baseband signal according to the selected carrier frequency to obtain baseband point frequency data.

[0014] In some specific implementations, the specific process of converting into the RF analog signal in step S2 is to sequentially perform DAC sampling, IQ modulation and up-conversion processing on the baseband IQ frequency data to obtain the RF analog signal.

[0015] In a second aspect, the present application provides a digital TR component automatic transmission phase test system, including a vector network analyzer, an automated test device, a digital signal processing device, a digital TR component, and a switch matrix, wherein:

[0016] The automated test equipment is used to generate the beam weight corresponding to the current tested channel of the digital TR component, and send the beam weight and frequency parameters to the digital signal processing equipment;

[0017] The digital signal processing device is used to generate baseband IQ point frequency data according to the received beam weight and frequency parameters, package the baseband IQ point frequency data and send them to the digital TR component respectively, and convert the baseband IQ point frequency data into a radio frequency analog signal and send it to a port of the vector network analyzer through the switch matrix;

[0018] The digital TR component is used to process the baseband IQ frequency data to obtain the RF signal, and send the RF signal to another port of the vector network analyzer;

[0019] The vector network analyzer is used to compare the received RF analog signal with the RF signal to obtain the transmit phase consistency test result.

[0020] In some specific embodiments, the switch matrix includes a mode selection switch, an instrument selection switch module and a channel selection switch, wherein two ports of the vector network analyzer are respectively connected to the input end of the instrument selection switch module, and the output end of the instrument selection switch module is respectively connected to the switch ends of the mode selection switch and the channel selection switch, the mode selection switch is used to select the DA end and the AD end of the digital signal processing device, and the channel selection switch is used to select the test channel of the digital TR component.

[0021] In some specific implementations, the switch matrix further includes a plurality of interface selection switches, the channel selection switches are respectively connected to the input end of each interface selection switch, and the output end of each interface selection switch is respectively connected to the RF port of the digital TR component.

[0022] In some specific embodiments, the instrument selection switch module includes a first switch, a third switch, a fourth switch, a fifth switch, and a sixth switch. The first switch, the third switch, the fifth switch, and the sixth switch are all single-pole double-throw switches, having one switch end and two switch ends, wherein:

[0023] The switch end of the first selection switch is connected to the switch end of the mode selection switch, the switching ends of the first selection switch are respectively connected to the switch end of the third switching switch and a port of the vector network analyzer, the switching ends of the third switching switch are respectively connected to the switching ends of the fifth switching switch and the sixth switching switch, the other switching end of the fifth switching switch is connected to the other switching end of the sixth switching switch, the switch end of the fifth switching switch is connected to the switch end of the fourth switching switch, the switching ends of the fourth switching switch are respectively connected to various test instruments, and the switch end of the sixth switching switch is connected to the switch end of the channel selection switch.

[0024] In some specific embodiments, the mode selection switch is used to switch to the transmit reference channel according to the transmit test mode of the current digital TR component, and receive the radio frequency analog signal transmitted by the digital signal processing device through the DA terminal;

[0025] The channel selection switch is used to select the current test channel of the digital TR component;

[0026] The interface selection switch is used to select the current test interface in the current test channel, and the RF signal is transmitted to the switch matrix along the selected current test channel and the current test interface;

[0027] The instrument selection switch module is used to respectively connect the connection path between the mode selection switch and the vector network analyzer and the connection path between the digital TR component and the vector network analyzer, and respectively transmit the RF analog signal and the RF signal back to the two ports of the vector network analyzer.

[0028] In some specific implementations, when the test mode is a transmission phase consistency test, the transmission path of the RF analog signal is, in order: a digital signal processing device, a mode selection switch, a first switching switch, and a port of a vector network analyzer;

[0029] The transmission path of the radio frequency signal is: a digital TR component, an interface selection switch, a channel selection switch, a sixth switching switch, a fifth switching switch, a fourth switching switch, and another port of the vector network analyzer.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] In the prior art, the transmission phase consistency test of the TR component is generally performed by testing the phase of the TR component channel to be tested through a vector network analyzer, and the test results are transmitted back to the mobile terminal for phase consistency test. However, the vector network analyzer generally sends RF analog signals. With the digitization of the TR component, the digital TR component outputs a baseband digital signal. The vector network analyzer cannot directly process the baseband digital signal. In order to achieve automated testing and the number of vector network analyzers used, one vector network analyzer is generally used, and only one test channel of the TR component is connected each time. When performing the transmission phase consistency test, the phase of other channels cannot be used as a reference for testing.

[0032] This application adds a digital signal processing device, generates the baseband frequency data required for the digital TR component test through the digital signal processing device, divides the baseband frequency data into two paths, one path is converted into a radio frequency analog signal that can be received by the vector network analyzer and sent to the vector network analyzer through a switch matrix, and the other path is sent to the digital TR component through a high-speed digital optical fiber, and then converted into a radio frequency signal by the digital TR component and sent to another port of the vector network analyzer through a switch matrix; the vector network analyzer measures the signals of the two ports to obtain the transmission phase consistency test results. By switching each interface of each channel using the switch matrix and generating a reference signal through a digital signal processing device, the automated test of the radio frequency port of the digital TR component is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of a transmission phase consistency test system provided in an embodiment of the present invention;

[0034] Figure 2 A schematic diagram of an automatic testing system provided by an embodiment of the present invention;

[0035] Figure 3 A flow chart of a transmission phase consistency test method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The relative arrangement of components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0038] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0039] Additionally, descriptions of well-known structures, functions, and configurations may be omitted for clarity and conciseness.One of ordinary skill in the art will recognize that various changes and modifications may be made to the examples described herein without departing from the spirit and scope of the present disclosure.

[0040] Technologies, methods, and apparatus known to ordinary technicians in the relevant field may not be discussed in detail, but where appropriate, such technologies, methods, and apparatus should be considered part of the authorization specification.

[0041] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0042] Example 1

[0043] This embodiment provides a digital TR component automatic transmission phase test system, including a vector network analyzer, an automated test device, a digital signal processing device, a digital TR component, and a switch matrix, wherein:

[0044] The switch matrix includes a mode selection switch 7, an instrument selection switch module, a channel selection switch 1, and an interface selection switch corresponding to each channel, wherein two ports of the vector network analyzer are respectively connected to the input end of the instrument selection switch module, and the output end of the instrument selection switch module is respectively connected to the switch ends of the mode selection switch and the channel selection switch, the mode selection switch is used to select the DA end and the AD end of the digital signal processing device, and the channel selection switch is used to select the test channel of the digital TR component. The channel selection switch is respectively connected to the input end of each interface selection switch, and the output end of each interface selection switch is respectively connected to the RF port of the digital TR component.

[0045] More specifically, the instrument selection switch module includes a first switch, a third switch, a fourth switch, a fifth switch, and a sixth switch. The first switch, the third switch, the fifth switch, and the sixth switch are all single-pole double-throw switches, having one switch end and two switch ends, wherein:

[0046] The switch end of the first selection switch is connected to the switch end of the mode selection switch, the switching ends of the first selection switch are respectively connected to the switch end of the third switching switch and a port of the vector network analyzer, the switching ends of the third switching switch are respectively connected to the switching ends of the fifth switching switch and the sixth switching switch, the other switching end of the fifth switching switch is connected to the other switching end of the sixth switching switch, the switch end of the fifth switching switch is connected to the switch end of the fourth switching switch, the switching ends of the fourth switching switch are respectively connected to various test instruments, and the switch end of the sixth switching switch is connected to the switch end of the channel selection switch.

[0047] for Figure 1 The various systems in the

[0048] The automated test equipment is used to generate the beam weight corresponding to the current tested channel of the digital TR component, and send the beam weight and frequency parameters to the digital signal processing equipment;

[0049] The digital signal processing device is used to generate baseband IQ point frequency data according to the received beam weight and frequency parameters, package the baseband IQ point frequency data and send them to the digital TR component respectively, and convert the baseband IQ point frequency data into a radio frequency analog signal and send it to a port of the vector network analyzer through the switch matrix;

[0050] The digital TR component is used to process the baseband IQ frequency data to obtain the RF signal, and send the RF signal to another port of the vector network analyzer;

[0051] The vector network analyzer is used to compare the received RF analog signal with the RF signal to obtain the transmit phase consistency test result.

[0052] The mode selection switch is used to switch to the transmit reference channel according to the transmit test mode of the current digital TR component, and receive the RF analog signal transmitted by the digital signal processing device through the DA terminal;

[0053] The channel selection switch is used to select the current test channel of the digital TR component;

[0054] The interface selection switch is used to select the current test interface in the current test channel, and the RF signal is transmitted to the switch matrix along the selected current test channel and the current test interface;

[0055] The instrument selection switch module is used to respectively connect the connection path between the mode selection switch and the vector network analyzer and the connection path between the digital TR component and the vector network analyzer, and respectively transmit the RF analog signal and the RF signal back to the two ports of the vector network analyzer.

[0056] based on Figure 1 The test process is:

[0057] Since the digital TR component has multiple channels, a four-channel digital TR component is taken as an example in this embodiment. Therefore, the channel selection switch 1 is a single-pole four-throw switch, which corresponds to the number of channels of the digital TR component. When testing, the channel selection switch can be controlled to switch to each channel in turn. Each channel of the digital TR component corresponds to multiple RF ports. Therefore, an interface selection switch is also required to be set to transmit the first analog signal to each RF port of each channel in turn when each channel is tested. The number of interface selection switches corresponds to the number of channels. In this embodiment, four interface selection switches 2, 3, 4, and 5 are provided, and each interface selection switch corresponds to the 8 RF ports connected to the digital TR component. In order to enable multiple RF test instruments to be connected to the test system, a fourth selection switch 11 is provided. It can be seen that the fourth selection switch selects a four-to-one switch. The four switching ends are respectively connected to the signal source, the first attenuator (connected to the power meter), the second attenuator (connected to the spectrum analyzer), and the P2 port of the vector network analyzer, which are used to switch these four test instruments.

[0058] When the test mode is the transmit phase consistency test, the automatic test software first generates the beam weight corresponding to the channel under test, and sends the weight and frequency parameters to the digital signal processing device. After receiving the weight and frequency information, the digital signal processing device generates baseband IQ point frequency data according to the frequency information, packages it and sends it to the digital TR component. At the same time, the digital signal processing device synchronously performs DAC, filtering and up-conversion on the baseband IQ point frequency data to obtain the RF analog signal. The transmission modes of the obtained RF signal and RF analog signal are as follows:

[0059] The RF analog signal is transmitted from the transmitting reference channel (L) to the switch matrix from the AD port of the digital signal processing device. At this time, the mode selection switch 7 is switched to the transmitting reference channel (L), and then the first switching switch 8 is controlled to be switched to the P1 port of the vector network analyzer;

[0060] After the RF signal is output from the digital TR component, the channel selection switch 1 and the interface selection switch 7 are controlled to connect to the RF port corresponding to the test channel to be tested, so that the RF signal is transmitted to the switch matrix along the path formed by the interface selection switch and the channel selection switch. In the switch matrix, the paths of the sixth switch, the fifth switch and the fourth switch are controlled to be turned on, and the fourth switch is controlled to select the P2 port connected to the vector network analyzer, so that the RF signal is transmitted to the P2 port of the vector network analyzer along the conductive path. The vector network analyzer is set to the receiver mode with the format of A / B, and the transmission phase can be measured.

[0061] like Figure 2As shown, this embodiment also provides a multi-channel digital TR component automatic test system, which includes not only the transmission phase test but also other test scenarios, such as the reception phase test. In order to achieve the switching of various test scenarios, the switch matrix includes a first switching switch 8 (in order to achieve the compatibility of the reception phase and the transmission phase consistency test system, the first switching switch 8 can be set to a three-terminal switching switch, so that when the transmission phase consistency test is performed, it can be directly connected to the vector network analyzer, and when the reception phase consistency test is performed, the RF signal sent by the power divider 6 can be received), a second switching switch 9, and a third switching switch 10. The fourth switch 10, the fourth switch 11, the fifth switch 12, the sixth switch 13, the seventh switch 14, and the eighth switch 15, except that the fourth switch 11 adopts a four-to-one switch and the seventh switch 14 adopts a double-pole double-throw switch, the remaining switches adopt single-pole double-throw switches, the two ports P1 and P2 of the vector network analyzer, the port P1 is connected to the input end of the power divider 6, the output end of the power divider is connected to the switching end of the first switch 8 and the second switch 9, the switching end of the second switch 9 is connected to the noise source, and the switch end of the second switch 9 is connected to the seventh switch The switch end of the first switch 8 is connected to the input end of the mode switch 7, the other switch end of the first switch 8 is connected to the switch end of the third switch 10, the switch end of the third switch 10 is respectively connected to the switch end of the fifth switch 12 and the switch end of the sixth switch 13, the switch end of the fifth switch 12 is connected to the switch end of the sixth switch 13, the switch end of the fifth switch 12 is connected to the switch end of the fourth switch 11, and the switch end of the fourth switch 11 is respectively connected to the signal source, the first attenuator (connected to the power meter), and the second attenuator (connected to the The switch end of the sixth switch 13 is connected to the J3 port of the seventh switch 14, the J2 port of the seventh switch 14 is connected to the input end of the channel switch 1, and the J4 port is connected to the switch end of the eighth switch 15. The J1-J4 ports of the channel switch 1 are respectively connected to the input ends of the interface switch 2-5, and the switch ends of the eighth switch 15 are respectively connected to the RF end of the time-frequency optical transmission device. When different test items are required, it is only necessary to control the corresponding switch action in the switch matrix to switch to the corresponding test link. When the transmission phase consistency test is performed, each switch is operated, and the signal flow path is shown as the dotted line in the figure. The action process in the switch matrix is:

[0062] Control the switch of the first switching switch 8 to switch to the switching end connected to the P1 port of the vector network analyzer, control the switch of the mode switching switch 7 to switch to the switching end connected to the transmitting reference channel (L), switch of the seventh switching switch 14 to switch to the switching end connected to the J2 and J3 ports, switch of the channel switching switch 1 to switch to the switching end of the interface switching switch 2 corresponding to the first channel, switch of the interface switching switch 2 to the XS03-XS10 RF port of the digital TR component in turn, switch of the fourth switching switch to switch to the switching end connected to the P2 port of the vector network analyzer, the RF analog signal along the mode selection switch, the first switching switch, the P1 port of the vector network analyzer, the RF signal along the interface selection switch, the channel selection switch, the sixth switching switch, the fifth switching switch, the fourth switching switch, another P2 port of the vector network analyzer.

[0063] Example 2

[0064] like Figure 3 As shown, this embodiment provides a method for automatically testing the transmission phase of a digital TR component, comprising the following steps:

[0065] S1. Open the automatic test program, set the vector network analyzer to the receiver mode, and control the digital TR component and the digital signal processing device to switch the test mode to the transmission mode;

[0066] S2, the automatic test equipment generates the baseband frequency data required for the digital TR component test and sends the baseband frequency data to the digital TR component after packaging, and converts the baseband frequency data into a radio frequency analog signal and sends it to a port of the vector network analyzer through the switch matrix;

[0067] S3, the digital TR component converts the baseband frequency data to obtain a radio frequency signal, and sends the radio frequency signal to another port of the vector network analyzer through the switch matrix;

[0068] S4. The vector network analyzer compares the received RF analog signal with the RF signal to obtain a transmission phase consistency test result;

[0069] S5. Control the switch matrix to switch to each RF port of the digital TR component in turn, and send a port switching instruction for switching the test channel and the test interface to the switch matrix, so that one RF port in one channel of the digital TR component is connected to the vector network analyzer, until the test of all RF ports of the digital TR component is completed.

[0070] In some specific implementations, the process of generating baseband frequency data in step S2 is:

[0071] S21, determining the beam weight according to the transmit phase consistency test item of the digital TR component, and selecting the carrier frequency;

[0072] S22. Send the beam weight and carrier frequency to a digital signal processing device. The digital signal processing device performs IQ modulation on the baseband signal according to the selected carrier frequency to obtain baseband point frequency data.

[0073] In some specific implementations, the specific process of converting into the RF analog signal in step S2 is to sequentially perform DAC sampling, IQ modulation and up-conversion processing on the baseband IQ frequency data to obtain the RF analog signal.

[0074] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. According to the technical essence of the present invention, within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the present invention.

Claims

1. A digital TR component automatic transmission phase test method, characterized in that: The following steps are involved: S1. Open the automatic test program, set the vector network analyzer to the receiver mode, and control the digital TR component and the digital signal processing device to switch the test mode to the transmission mode; S2, the automatic test equipment generates the baseband frequency data required for the digital TR component test and sends the baseband frequency data to the digital TR component after packaging, and converts the baseband frequency data into a radio frequency analog signal and sends it to a port of the vector network analyzer through the switch matrix; S3, the digital TR component converts the baseband frequency data to obtain a radio frequency signal, and sends the radio frequency signal to another port of the vector network analyzer through the switch matrix; S4. The vector network analyzer compares the received RF analog signal with the RF signal to obtain a transmission phase consistency test result; S5. Control the switch matrix to switch to each RF port of the digital TR component in turn until the test of all RF ports of the digital TR component is completed.

2. The method for automatically testing the transmission phase of a digital TR component according to claim 1, characterized in that: The process of generating baseband frequency data in step S2 is as follows: S21. Determine the beam weight according to the transmit phase consistency test item of the digital TR component and select the carrier frequency; S22. Send the beam weight and carrier frequency to a digital signal processing device. The digital signal processing device performs IQ modulation on the baseband signal according to the selected carrier frequency to obtain baseband point frequency data.

3. The method for automatically testing the transmission phase of a digital TR component according to claim 1, characterized in that: The specific process of converting into the RF analog signal in step S2 is to perform DAC sampling, IQ modulation and up-conversion processing on the baseband IQ point frequency data in sequence to obtain the RF analog signal.

4. A digital TR component automatic transmission phase test system, including a vector network analyzer, characterized in that: Including automated test equipment, digital signal processing equipment, digital TR components, switch matrix, among which, The automated test equipment is used to generate the beam weight corresponding to the current tested channel of the digital TR component, and send the beam weight and frequency parameters to the digital signal processing equipment; The digital signal processing device is used to generate baseband IQ point frequency data according to the received beam weight and frequency parameters, package the baseband IQ point frequency data and send them to the digital TR component respectively, and convert the baseband IQ point frequency data into a radio frequency analog signal and send it to a port of the vector network analyzer through the switch matrix; The digital TR component is used to process the baseband IQ frequency data to obtain the RF signal, and send the RF signal to another port of the vector network analyzer; The vector network analyzer is used to compare the received RF analog signal with the RF signal to obtain the transmit phase consistency test result.

5. The digital TR component automatic transmission phase test system according to claim 4 is characterized in that: The switch matrix includes a mode selection switch, an instrument selection switch module and a channel selection switch, wherein the two ports of the vector network analyzer are respectively connected to the input end of the instrument selection switch module, and the output end of the instrument selection switch module is respectively connected to the switch ends of the mode selection switch and the channel selection switch. The mode selection switch is used to select the DA end and the AD end of the digital signal processing device, and the channel selection switch is used to select the test channel of the digital TR component.

6. The digital TR component automatic transmission phase test system according to claim 5, characterized in that: The switch matrix also includes a plurality of interface selection switches, the channel selection switches are respectively connected to the input end of each interface selection switch, and the output end of each interface selection switch is respectively connected to the radio frequency port of the digital TR component.

7. The digital TR component automatic transmission phase test system according to claim 5, characterized in that: The instrument selection switch module includes a first switch, a third switch, a fourth switch, a fifth switch, and a sixth switch. The first switch, the third switch, the fifth switch, and the sixth switch are all single-pole double-throw switches, having one switch end and two switch ends, wherein: The switch end of the first selection switch is connected to the switch end of the mode selection switch, the switching ends of the first selection switch are respectively connected to the switch end of the third switching switch and a port of the vector network analyzer, the switching ends of the third switching switch are respectively connected to the switching ends of the fifth switching switch and the sixth switching switch, the other switching end of the fifth switching switch is connected to the other switching end of the sixth switching switch, the switch end of the fifth switching switch is connected to the switch end of the fourth switching switch, the switching ends of the fourth switching switch are respectively connected to various test instruments, and the switch end of the sixth switching switch is connected to the switch end of the channel selection switch.

8. The digital TR component automatic transmission phase test system according to claim 6, characterized in that: The mode selection switch is used to switch to the transmit reference channel according to the transmit test mode of the current digital TR component, and receive the RF analog signal transmitted by the digital signal processing device through the DA terminal; The channel selection switch is used to select the current test channel of the digital TR component; The interface selection switch is used to select the current test interface in the current test channel, and the RF signal is transmitted to the switch matrix along the selected current test channel and the current test interface; The instrument selection switch module is used to respectively connect the connection path between the mode selection switch and the vector network analyzer and the connection path between the digital TR component and the vector network analyzer, and respectively transmit the RF analog signal and the RF signal back to the two ports of the vector network analyzer.

9. The digital TR component automatic transmission phase test system according to claim 7, characterized in that: When the test mode is a transmission phase consistency test, the transmission path of the radio frequency analog signal is: a digital signal processing device, a mode selection switch, a first switching switch, and a port of a vector network analyzer; The transmission path of the radio frequency signal is: a digital TR component, an interface selection switch, a channel selection switch, a sixth switching switch, a fifth switching switch, a fourth switching switch, and another port of the vector network analyzer.

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