CN217216595U - Base band plate testing device and base band plate testing equipment - Google Patents

Abstract

The utility model provides a baseband board testing device and baseband board testing equipment, wherein the baseband board testing device comprises a baseband board testing tool and a baseband board testing circuit; the baseband board test tool comprises at least one radio frequency connecting seat, wherein the radio frequency connecting seat is connected with a baseband board test circuit and is used for transmitting radio frequency signals emitted by each interface of the baseband board to the baseband board test circuit through a radio frequency wire; the baseband board test circuit is used for combining the radio frequency signals transmitted by each interface of the baseband board and sending the combined signals to the test instrument. The baseband board testing apparatus provided in this embodiment includes a plurality of rf connecting sockets, where the rf connecting sockets may connect all the rf interfaces of the baseband board to be tested, and the baseband board testing circuit may combine signals of signals transmitted by the rf interfaces to transmit the signals to the testing instrument, so as to automatically test all the rf interfaces of the baseband board to be tested, thereby improving the testing efficiency.

Description

Base band plate testing device and base band plate testing equipment

Technical Field

The utility model relates to a baseband board test field particularly, relates to a baseband board testing arrangement and baseband board test equipment.

Background

The baseband processing unit is a baseband signal processing unit for 4G and 5G wireless communication and is a core processing unit for base station communication. The baseband processing unit can be configured with a baseband board, so that the superposition networking of the narrowband Internet of things system is realized on the base station. And the number of interfaces on the baseband board is more, especially the number of radio frequency interfaces is up to 16. In the production test link, all radio frequency interfaces on the baseband board need to be calibrated and tested to ensure the production quality of the baseband processing unit.

In the existing production test process, on one hand, the radio frequency interface of the baseband board needs to be manually plugged and unplugged with a radio frequency connecting wire to test the radio frequency interface, and the mode has low efficiency, easily causes the cable position to be inserted wrongly, and reduces the production efficiency; on the other hand, the radio frequency interface is tested by the existing calibration test instrument, but the existing calibration test instrument has fewer transmitting channels and receiving channels, and cannot be applied to the test of a multi-interface baseband board. Therefore, how to design a baseband board testing apparatus to automatically test all the rf interfaces of the baseband board to improve the testing efficiency is an urgent problem to be solved.

SUMMERY OF THE UTILITY MODEL

In view of this, in order to solve the problem that prior art brought, the utility model provides a baseband board testing arrangement and baseband board test equipment.

In a first aspect, the present invention provides a baseband board testing device, comprising a baseband board testing tool and a baseband board testing circuit;

the baseband board test tool comprises at least one radio frequency connecting seat, wherein the radio frequency connecting seat is connected with the baseband board test circuit and is used for transmitting radio frequency signals emitted by each interface of a baseband board to the baseband board test circuit through a radio frequency wire;

the baseband board test circuit is used for signal combination of radio frequency signals emitted by each interface of the baseband board and sending the radio frequency signals to a test instrument.

In an optional embodiment, the base band plate test tool further comprises a fixing platform, a radio frequency seat pressing plate and a pressing handle;

the fixing platform is used for fixing the base band plate;

the pressing handle is fixedly connected with the radio frequency base pressing plate and used for controlling the insertion or separation of the radio frequency base pressing plate and the base band plate;

the radio frequency connecting base penetrates and is fixedly connected with the radio frequency base pressing plate and is used for being connected with the base band plate in an inserting mode and receiving radio frequency signals transmitted by all interfaces of the base band plate.

In an optional embodiment, the baseband board test circuit includes a first common-splitting combiner, a second common-splitting combiner, a third common-splitting combiner, and a fourth common-splitting combiner;

the first common combiner is connected with the second common combiner and is used for integrating the radio-frequency signals output by the radio-frequency signal transmitting interfaces in the baseband board in a time-sharing manner so as to transmit the radio-frequency signals to the second common combiner;

the second common combiner is used for connecting the test instrument and respectively transmitting the radio frequency signals to the third common combiner and the test instrument, and the test instrument is used for comparing the signal power of the radio frequency signals with the preset signal power so as to detect whether each transmission link corresponding to each radio frequency signal transmitting interface is abnormal or not;

the third common combiner is used for connecting the predistortion interfaces of the baseband board, integrating the radio frequency signals read by each predistortion, and comparing the signal power of the read radio frequency signals with the preset signal power to detect whether each transmission link corresponding to each predistortion interface is abnormal or not;

the fourth common combiner is connected with each radio frequency signal receiving interface of the baseband board and used for integrating the radio frequency signals received by each radio frequency signal receiving interface and output by the test instrument and comparing the signal power of the received radio frequency signals with the preset signal power so as to detect whether each transmission link corresponding to each radio frequency signal receiving interface is abnormal or not.

In an optional embodiment, the fourth common combiner is further configured to connect to a SNIFFER signal receiving interface of the baseband board, and compare a signal power of a SNIFFER signal received by the SNIFFER signal receiving interface with a preset SNIFFER signal power to detect that a corresponding transmission link is abnormal.

In an optional embodiment, the fourth common combiner is further configured to connect to a GPS signal receiving interface of the baseband board, and compare a signal power of a GPS signal received by the GPS signal receiving interface with a preset GPS signal power to detect whether a corresponding transmission link is abnormal.

In an optional embodiment, the first common-dividing combiner and the third common-dividing combiner respectively adopt a four-in-one type common-dividing combiner;

the second common divider combiner is a two-in-one common divider combiner;

and the fourth common-branch combiner is an eight-in-one type common-branch combiner.

In an optional embodiment, each radio frequency signal transmission interface includes an F1_ TX1 interface, an F1_ TX2 interface, an F2_ TX1 interface, and an F2_ TX2 interface;

four input ends of the first common combiner are correspondingly connected with the F1_ TX1 interface, the F1_ TX2 interface, the F2_ TX1 interface and the F2_ TX2 interface.

In an optional embodiment, each predistortion interface includes an F1_ DPD1 interface, an F1_ DPD2 interface, an F2_ DPD1 interface, and an F2_ DPD2 interface;

four input ends of the third public division combiner are correspondingly connected with the F1_ DPD1 interface, the F1_ DPD2 interface, the F2_ DPD1 interface, and the F2_ DPD2 interface.

In an optional embodiment, each rf signal receiving interface includes an F1_ RX1 interface, an F1_ RX2 interface, an F2_ RX1 interface, and an F2_ RX2 interface;

four input terminals of the fourth common combiner are correspondingly connected to the F1_ RX1 interface, the F1_ RX2 interface, the F2_ RX1 interface, and the F2_ RX2 interface.

In a second aspect, the present invention provides a baseband board testing apparatus comprising a test instrument and a baseband board testing device as described in any one of the preceding embodiments;

a radio frequency connecting seat in the baseband board testing device is connected with the testing instrument through a radio frequency wire so as to transmit radio frequency signals emitted by each interface of the baseband board to the testing instrument;

the test instrument is used for detecting the signal power of the radio frequency signal.

The embodiment of the utility model has the following advantage:

the embodiment provides a baseband board testing device, which comprises a baseband board testing tool and a baseband board testing circuit; the baseband board test tool comprises at least one radio frequency connecting seat, wherein the radio frequency connecting seat is connected with a baseband board test circuit and is used for transmitting radio frequency signals emitted by each interface of the baseband board to the baseband board test circuit through a radio frequency wire; the baseband board test circuit is used for combining the radio frequency signals transmitted by each interface of the baseband board and sending the combined signals to the test instrument. The baseband board test tool in the baseband board test device that this embodiment provided includes a plurality of radio frequency connecting seats, but all radio frequency interfaces of this radio frequency connecting seat connection baseband board that awaits measuring, this baseband board test device is applicable to the baseband board test of many interfaces promptly, and can carry out signal combiner with the signal that each radio frequency interface launched through the baseband board test circuit in the baseband board test device with transmit to test instrument to can all radio frequency interfaces of the baseband board that awaits measuring of automated test, in order to improve efficiency of software testing.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a baseband board testing device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a base band plate testing tool according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a baseband board test circuit according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the baseband board testing apparatus according to an embodiment of the present invention.

Icon: 11-base band plate test kit; 12-baseband board test circuitry; 111-radio frequency connection base; 112-a stationary platform; 113-radio frequency base platen; 114-pressing the handle; 121-a first common divider; 122-a second common-dividing combiner; 123-a third common divider combiner; 124-a fourth common dividing combiner; 20-a test meter; 10-base band plate test device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and for simplicity of description, and do not indicate or imply that the equipment or components that are referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The baseband processing unit is a baseband signal processing unit for 4G and 5G wireless communication and is a core processing unit for base station communication. The baseband processing unit can be configured with a baseband board, which mainly implements baseband signal processing functions and can support baseband processing related functions of carriers (such as PS service, CS service, HSDPA, HSUPA, etc.), and there are many signal interfaces on the baseband board, especially up to 16 radio frequency interfaces. In the production test link, all radio frequency interfaces need to be calibrated and tested so as to ensure the production quality of products.

For example, the rf interface of the baseband board in the baseband processing unit is shown in table 1 below:

TABLE 1 radio frequency interface

In order to ensure that the radio frequency index meets the standard requirement, all radio frequency interfaces of the baseband processing unit need to be calibrated, wherein the synchronous interfaces of the radio frequency calibration corresponding to the baseband board in the baseband processing unit are shown in the following table 2:

TABLE 2 synchronization interface for radio frequency calibration

Serial number	Number of bits	Function(s)	Direction	Description of the invention
					1	CN3101	10M synchronization	Input device	Calibration using, connecting instruments
2	CN3103	RF_SYNC	Output of	Receiving sensitivity calibration, connecting instrument

Referring to fig. 1, the present embodiment provides a baseband board testing apparatus 10 for calibrating and testing all rf interfaces of a baseband board in a baseband processing unit. The base band board testing device 10 comprises a base band board testing tool 11 and a base band board testing circuit 12; the baseband board test tool 11 comprises at least one radio frequency connecting seat 111, wherein the radio frequency connecting seat 111 is connected with a baseband board test circuit 12 and is used for transmitting radio frequency signals transmitted by each interface of a baseband board to the baseband board test circuit 12 through a radio frequency wire; the baseband board test circuit 12 is configured to combine signals of radio frequency signals transmitted by each interface of the baseband board, and send the combined signals to the test instrument 20.

Exemplarily, as shown in fig. 2, the base strip board testing tool 11 further includes a fixing platform 112, a radio frequency base pressing plate 113, and a pressing handle 114; the fixing platform 112 is used for fixing the base band plate; the pressing handle 114 is fixedly connected with the radio frequency base pressing plate 113 and is used for controlling the insertion or separation of the radio frequency base pressing plate 113 and the base band plate; as shown in fig. 3, the rf connector 111 is fixedly connected to the rf connector pressing plate 113 for inserting the baseband board and receiving the rf signals transmitted from the interfaces of the baseband board.

Specifically, the fixing platform 112 is mainly a supporting base, and can fix the substrate to be tested inside the supporting base. The radio frequency base pressing plate 113 mainly fixes the radio frequency base, and the radio frequency base pressing plate 113 can move up and down, and after the pressing handle 114 is pressed downwards, the radio frequency base pressing plate 113 drives the radio frequency connecting base 111 to move downwards, so that the radio frequency connecting base 111 can be directly inserted into 16 radio frequency interfaces of the base band plate, and the radio frequency connecting base 111 does not need to be manually plugged. The lower end of the rf connecting socket 111 can be directly inserted into the rf interface (rf socket) of the baseband board, and the upper end of the rf connecting socket 111 is connected to the rf line, so as to transmit the signal of each rf interface of the baseband board through the rf line. The pressing handle 114 realizes the lifting and lowering of the radio frequency base pressing plate 113 through the mechanical and lever principle. When the pressing handle 114 moves downwards, the pressing plate 113 of the radio frequency base is driven to move downwards, so that the radio frequency connecting base 111 is inserted into the radio frequency interface connected with the base band plate, when the pressing handle 114 moves upwards, the pressing plate 113 of the radio frequency base is driven to lift, the radio frequency connecting base 111 on the pressing plate 113 of the radio frequency base is separated from the radio frequency interface of the base band plate, and the base band plate can be taken out from the fixed platform 112 subsequently.

In a possible embodiment, the baseband board test circuit 12 includes a plurality of common combiners, and the common combiners are connected to the radio frequency interfaces of the baseband board and are used for combining signals of a plurality of signals output by the radio frequency interfaces of the baseband board to form a transmitting path and a receiving path, and specifically, the common combiners of different types and the selected number of the common combiners may be selected according to the interfaces of different types and the number of the interfaces included in the baseband board.

In the present embodiment, as shown in fig. 3, the baseband board test circuit 12 includes a first common combiner 121, a second common combiner 122, a third common combiner 123 and a fourth common combiner 124. Wherein, the first common-dividing combiner 121 and the third common-dividing combiner 123 respectively adopt four-in-one type common-dividing combiners; the second common combiner 122 is a two-in-one common combiner; the fourth common combiner 124 is an eight-in-one type common combiner.

Exemplarily, four input ends of the first common combiner 121 are used to connect to four transmitting interfaces of the baseband board correspondingly, and an in/out end of the first common combiner 121 is connected to the second common combiner 122/out end correspondingly, and is used to integrate the radio frequency signals time-divisionally output by the radio frequency signal transmitting interfaces in the baseband board, so as to transmit the radio frequency signals to the second common combiner 122. For example, each radio frequency signal transmission interface comprises an F1_ TX1 interface, an F1_ TX2 interface, an F2_ TX1 interface and an F2_ TX2 interface; the four input terminals of the first common splitter 121 are correspondingly connected to the F1_ TX1 interface, the F1_ TX2 interface, the F2_ TX1 interface, and the F2_ TX2 interface.

A first output end of the second common combiner 122 is used for connecting a radio frequency signal input end (RF _ IN end) of the test instrument 20, and a second output end of the second common combiner 122 is connected to an IN/out end of the third common combiner 123. The second common combiner 122 transmits the rf signals integrated by the first common combiner 121 to the third common combiner 123 and the test instrument 20, where the test instrument 20 is configured to compare the signal power of the rf signals with the preset signal power, so as to detect whether each transmission link corresponding to each rf signal transmitting interface is abnormal.

The four input ends of the third common division combiner 123 are used for correspondingly connecting the four predistortion interfaces of the baseband board to integrate the radio frequency signals read by the predistortion interfaces, and compare the signal power of the read radio frequency signals with the preset signal power to detect whether each transmission link corresponding to each predistortion interface is abnormal. For example, each predistortion interface includes an F1_ DPD1 interface, an F1_ DPD2 interface, an F2_ DPD1 interface, and an F2_ DPD2 interface; the four input terminals of the third common combiner 123 are correspondingly connected to the F1_ DPD1 interface, the F1_ DPD2 interface, the F2_ DPD1 interface, and the F2_ DPD2 interface.

The in/OUT interface of the fourth common combiner 124 is used for connecting the radio frequency signal output end (RF _ OUT end) of the test meter 20; the four input terminals of the fourth common combiner 124 are used for correspondingly connecting four radio frequency signal receiving interfaces of the baseband board, and are used for integrating the radio frequency signals received by the radio frequency signal receiving interfaces and output by the test instrument 20, and comparing the signal power of the received radio frequency signals with the preset signal power, so as to detect whether each transmission link corresponding to each radio frequency signal receiving interface is abnormal. For example, each rf signal receiving interface includes an F1_ RX1 interface, an F1_ RX2 interface, an F2_ RX1 interface, and an F2_ RX2 interface; the first input, the second input, the third input and the fourth input of the fourth common dividing/combining device 124 are correspondingly connected to the F1_ RX1 interface, the F1_ RX2 interface, the F2_ RX1 interface and the F2_ RX2 interface.

In addition, one of the input terminals of the fourth common combiner 124 is further configured to connect to a SNIFFER signal receiving interface of the baseband board, for example, the sixth input terminal of the fourth common combiner 124 is configured to connect to the SNIFFER signal receiving interface, and compare the signal power of the SNIFFER signal received by the SNIFFER signal receiving interface with a preset SNIFFER signal power to detect that the corresponding transmission link is abnormal.

One of the input terminals of the fourth common combiner 124 is further configured to connect to a GPS signal receiving interface of the baseband board, for example, the eighth input terminal of the fourth common combiner 124 is configured to connect to the GPS signal receiving interface, and compare the signal power of the GPS signal received by the GPS signal receiving interface with a preset GPS signal power to detect whether the corresponding transmission link is abnormal.

It should be noted that, the F1_ DPD1 interface converts the radio frequency signal transmitted by the transmitting interface into a digital signal, the signal read by the F1_ DPD1 interface is a detection result for the radio frequency signal transmitted by the F1_ TX1 interface, and when the baseband board F1_ TX1 interface transmits the radio frequency signal, the F1_ DPD1 interface of the baseband board correspondingly receives the radio frequency signal transmitted by the F1_ TX1 interface. When the baseband board transmits a radio frequency signal, each transmitting interface transmits in a time-sharing manner, that is, the four transmitting interfaces cannot transmit the radio frequency signal simultaneously, and the four predistortion interfaces correspond to the four transmitting interfaces one by one, and after the transmitting interfaces transmit the radio frequency signal, the predistortion interfaces correspondingly receive the transmitting signal, for example, the F1_ DPD1 interface correspondingly receives the radio frequency signal transmitted by the F1_ TX1 interface, and the F1_ DPD2 interface correspondingly receives the radio frequency signal transmitted by the F1_ TX2 interface.

Exemplarily, when the baseband board testing device 10 is used to calibrate and test the transmission interface and the predistortion interface of the baseband board, taking F1_ TX1 as an example for explanation, when the F1_ TX1 interface of the baseband board transmits a radio frequency signal, if the power of the radio frequency signal read by the test instrument 20 connected to the baseband board testing device 10 is less than a preset set value, it is determined that the transmission link corresponding to the F1_ TX1 interface is abnormal, that is, there is a problem in welding of the F1_ TX1 interface.

If the power of the radio frequency signal read by the test instrument 20 is not less than the set value when the F1_ TX1 interface of the baseband board transmits the radio frequency signal, it indicates that the transmission link corresponding to the F1_ TX1 interface is normal, and meanwhile, if the radio frequency signal read by the F1_ DPD1 interface is less than the predetermined set value, it indicates that the transmission link corresponding to the F1_ DPD1 interface is abnormal, that is, it is determined that there is no problem in welding the F1_ TX1 interface, and there is a problem in welding the F1_ DPD1 interface.

Similarly, the other transmission interfaces and the predistortion interfaces may be tested correspondingly according to the testing process and implementation logic of the F1_ TX1 interface and the F1_ DPD1 interface, and the testing process is not described in detail herein.

Exemplarily, when the baseband board testing apparatus 10 is used to test the receiving interface of the baseband board, taking the F1_ RX1 interface as an example for description, when the F1_ RX1 interface of the baseband board receives the radio frequency signal sent by the test instrument 20, if the power of the radio frequency signal received by the F1_ RX1 interface is smaller than a preset set value, it is described that the transmission link corresponding to the F1_ RX1 interface is abnormal, and it is determined that there is a problem in welding of the F1_ RX1 interface.

It should be noted that the four paths of radio frequency signals of the F1_ TX1 interface, the F1_ TX2 interface, the F2_ TX1 interface, and the F2_ TX2 interface need to be transmitted in a time-sharing manner, and cannot be transmitted and detected at the same time. And the six transmission links corresponding to the interfaces F1_ RX1, F1_ RX2, F2_ RX1, F2_ RX2, GPS, and SNIFFER can be detected synchronously, after the test instrument 20 sends out a radio frequency signal, the six transmission links can be detected simultaneously, and when the detection result is smaller than a threshold value, that is, the received signal power is smaller than a preset value, it is determined that the corresponding transmission link has a welding problem.

In addition, since the signal combining is realized through the common combiner, and there is a line loss between the common combiner and the radio frequency cable, in the calibration and test links of the radio frequency signal, the loss caused by the common combiner and the radio frequency cable needs to be compensated, and therefore, the line loss between the transmission links corresponding to the interfaces needs to be measured respectively to perform corresponding compensation, so as to improve the accuracy of the detection result, and further improve the accuracy of the detection of the transmission links corresponding to the radio frequency interfaces of the baseband board.

For example, the line loss between 600MHz and 6GHz between the F1_ TX1 interface and the RF _ IN end is measured and compensated into the detection result of the F1_ TX1 interface; measuring the line loss between 600MHZ-6Ghz between the F1_ TX2 interface and the RF _ IN end, and compensating the line loss into the detection result of the F1_ TX2 interface; measuring the line loss between 600MHZ-6Ghz between the F2_ TX1 interface and the RF _ IN end, and compensating the line loss into the detection result of the F2_ TX1 interface; measuring the line loss between 600MHZ-6Ghz between the F2_ TX2 interface and the RF _ IN end, and compensating the line loss into the detection result of the F1_ TX1 interface; measuring the line loss between 600MHZ-6Ghz between an F1_ TX1 interface and an F1_ DPD1 interface, and compensating the line loss into the detection result of the F1_ DPD1 interface; measuring the line loss between 600MHZ-6Ghz between an F1_ TX2 interface and an F1_ DPD2 interface, and compensating the line loss into the detection result of the F1_ DPD 2; measuring the line loss between 600MHZ-6Ghz between an F2_ TX1 interface and an F2_ DPD1 interface, and compensating the line loss into the detection result of the F2_ DPD1 interface; measuring the line loss between 600MHZ-6Ghz between an F2_ TX2 interface and an F2_ DPD2 interface, and compensating the line loss into the detection result of the F2_ DPD2 interface; measuring the line loss between 600MHZ-6Ghz between the F1_ RX1 interface and the RF _ OUT terminal, and compensating the line loss into the detection result of the F1_ RX1 interface; measuring the line loss between 600MHZ-6Ghz between the F1_ RX2 interface and the RF _ OUT terminal, and compensating the line loss into the detection result of the F1_ RX2 interface; measuring the line loss between 600MHZ-6Ghz between the F1_ RX1 interface and the RF _ OUT terminal, and compensating the line loss into the detection result of the F2_ RX1 interface; measuring the line loss between 600MHZ-6Ghz between the F2_ RX2 interface and the RF _ OUT terminal, and compensating the line loss into the detection result of the F2_ RX2 interface; measuring the line loss between 600MHZ-6Ghz from the SNIFFER signal receiving interface to the RF _ OUT terminal, and compensating the line loss into the detection result of the SNIFFER signal receiving interface; and measuring the line loss between 600MHZ-6Ghz between the GPS signal receiving interface and the RF _ OUT terminal, and compensating the line loss into the detection result of the GPS signal receiving interface.

As a possible implementation, as shown in fig. 4, the present embodiment further provides a baseband board testing apparatus, which includes a testing meter 20 and the baseband board testing device 10; the radio frequency connecting base 111 in the baseband board testing device 10 is connected to the testing instrument 20 through a radio frequency line so as to transmit the radio frequency signals transmitted by each interface of the baseband board to the testing instrument 20; the test meter 20 is used to detect the signal power of the radio frequency signal. Wherein, the test meter 20 can be a test meter 20 of CWM500 type.

The present embodiment provides a baseband board testing apparatus 10, which includes a baseband board testing device 11 and a baseband board testing circuit 12; the baseband board test tool 11 comprises at least one radio frequency connecting seat 111, wherein the radio frequency connecting seat 111 is connected with the baseband board test circuit 12 and is used for transmitting radio frequency signals transmitted by each interface of the baseband board to the baseband board test circuit 12 through a radio frequency wire; the baseband board test circuit 12 is configured to combine signals of radio frequency signals transmitted by each interface of the baseband board, and send the combined signals to the test instrument 20. The baseband board testing apparatus 11 in the baseband board testing apparatus 10 provided in this embodiment includes a plurality of rf connecting sockets 111, the rf connecting sockets 111 can connect all the rf interfaces of the baseband board to be tested, that is, the baseband board testing apparatus 10 is suitable for the baseband board testing of multiple interfaces, and the baseband board testing circuit 12 in the baseband board testing apparatus 10 can combine the signals transmitted by each rf interface to transmit the signals to the testing instrument 20, so as to automatically test all the rf interfaces of the baseband board to be tested, thereby improving the testing efficiency.

In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the product of the application is usually placed in when used, and are used only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

It should also be noted that, unless expressly stated or limited otherwise, the terms "disposed" and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A baseband board testing device is characterized by comprising a baseband board testing tool and a baseband board testing circuit;

the baseband board test tool comprises at least one radio frequency connecting seat, wherein the radio frequency connecting seat is connected with the baseband board test circuit and is used for transmitting radio frequency signals emitted by each interface of a baseband board to the baseband board test circuit through a radio frequency wire;

the baseband board test circuit is used for signal combination of radio frequency signals emitted by each interface of the baseband board and sending the radio frequency signals to a test instrument.

2. The baseband board testing apparatus according to claim 1, wherein said baseband board testing tool further comprises a fixed platform, a radio frequency base press plate, a press handle;

the fixing platform is used for fixing the base band plate;

the pressing handle is fixedly connected with the radio frequency base pressing plate and used for controlling the insertion or separation of the radio frequency base pressing plate and the base band plate;

the radio frequency connecting base penetrates and is fixedly connected with the radio frequency base pressing plate and is used for being connected with the base band plate in an inserting mode and receiving radio frequency signals transmitted by all interfaces of the base band plate.

3. The baseband board test apparatus according to claim 1, wherein the baseband board test circuit includes a first common-branch combiner, a second common-branch combiner, a third common-branch combiner, and a fourth common-branch combiner;

the first common combiner is connected with the second common combiner and is used for integrating the radio-frequency signals output by the radio-frequency signal transmitting interfaces in the baseband board in a time-sharing manner so as to transmit the radio-frequency signals to the second common combiner;

the second common combiner is used for connecting the test instrument and respectively transmitting the radio frequency signals to the third common combiner and the test instrument, and the test instrument is used for comparing the signal power of the radio frequency signals with the preset signal power so as to detect whether each transmission link corresponding to each radio frequency signal transmitting interface is abnormal or not;

the third common combiner is used for connecting the predistortion interfaces of the baseband board, integrating the radio frequency signals read by the predistortion interfaces, and comparing the signal power of the read radio frequency signals with the preset signal power to detect whether each transmission link corresponding to each predistortion interface is abnormal or not;

the fourth common combiner is connected with each radio frequency signal receiving interface of the baseband board and used for integrating the radio frequency signals received by each radio frequency signal receiving interface and output by the test instrument and comparing the signal power of the received radio frequency signals with the preset signal power so as to detect whether each transmission link corresponding to each radio frequency signal receiving interface is abnormal or not.

4. The baseband board testing apparatus according to claim 3, wherein the fourth common combiner is further configured to connect a SNIFFER signal receiving interface of the baseband board, and compare a signal power of a SNIFFER signal received by the SNIFFER signal receiving interface with a preset SNIFFER signal power to detect that a corresponding transmission link is abnormal.

5. The baseband board testing device according to claim 3, wherein the fourth common combiner is further configured to connect to a GPS signal receiving interface of the baseband board, and compare a signal power of a GPS signal received by the GPS signal receiving interface with a preset GPS signal power to detect whether a corresponding transmission link is abnormal.

6. The baseband board testing device according to claim 3, wherein the first common combiner and the third common combiner are four-in-one type common combiners, respectively;

the second common divider combiner is a two-in-one common divider combiner;

and the fourth common-branch combiner is an eight-in-one type common-branch combiner.

7. The baseband board testing device according to claim 3, wherein each of said radio frequency signal transmission interfaces comprises an F1 TX1 interface, an F1 TX2 interface, an F2 TX1 interface, and an F2 TX2 interface;

four input ends of the first common combiner are correspondingly connected with the F1_ TX1 interface, the F1_ TX2 interface, the F2_ TX1 interface and the F2_ TX2 interface.

8. The baseband board testing device according to claim 4, wherein each predistortion interface comprises an F1_ DPD1 interface, an F1_ DPD2 interface, an F2_ DPD1 interface, and an F2_ DPD2 interface;

four input ends of the third public branch combiner are correspondingly connected to the F1_ DPD1 interface, the F1_ DPD2 interface, the F2_ DPD1 interface, and the F2_ DPD2 interface.

9. The baseband board testing apparatus according to claim 3, wherein each of said radio frequency signal receiving interfaces comprises an F1_ RX1 interface, an F1_ RX2 interface, an F2_ RX1 interface, and an F2_ RX2 interface;

four input terminals of the fourth common combiner are correspondingly connected to the F1_ RX1 interface, the F1_ RX2 interface, the F2_ RX1 interface, and the F2_ RX2 interface.

10. A baseband board testing apparatus comprising a test meter and a baseband board testing device according to any one of claims 1 to 9;

a radio frequency connecting seat in the baseband board testing device is connected with the testing instrument through a radio frequency wire so as to transmit radio frequency signals emitted by each interface of the baseband board to the testing instrument;

the test instrument is used for detecting the signal power of the radio frequency signal.

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