Mounting structure of PXI phase shift attenuator

Abstract

The utility model discloses a mounting structure of a PXI phase shift attenuator, which comprises a first program control attenuation module, a second program control attenuation module, a mounting seat and a PCB mounting plate, the first program control attenuation module is fixed on the PCB mounting plate, the mounting seat covers the first program control attenuation module and is fixed on the PCB mounting plate, and the second program control attenuation module is fixed on the mounting seat. The two program-controlled attenuation modules are separated through the mounting base and stacked on the same PCB mounting plate, so that the mounting space can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument testing, and particularly relates to an installation structure of a PXI phase shifter attenuator. Background Art

[0002] It is common that the test system generates high-voltage signals that are not compatible with the instrument functions in the PXI system. It is also common that the test system cannot generate a large enough voltage range to simulate sensors or other devices. The power supply of the PXI chassis limits the ability of the PXI device to generate high-voltage signals, and there is no space to consume power conversion.

[0003] Therefore, a PXI phase shifter attenuator module is generally inserted into the PXI chassis so that it can adjust the signal amplitude through other devices to optimize the measured value. In the existing PXI chassis, a PXI phase shifter attenuator is inserted into each slot, and each PXI phase shifter attenuator only contains one phase shifter attenuator. When two PXI phase shifter attenuators need to be installed, the space will be wasted due to the large gap between adjacent card slots. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an installation structure of a PXI phase shifter attenuator. By separating two programmable attenuation modules through a mounting seat and stacking them on a PCB mounting board, the installation space can be saved.

[0005] To solve the above technical problems, the utility model adopts the following scheme:

[0006] The installation structure of the PXI phase shifter attenuator includes a first programmable attenuation module, a second programmable attenuation module, a mounting seat, and a PCB mounting board. The first programmable attenuation module is fixed on the PCB mounting board, the mounting seat covers the first programmable attenuation module and is fixed on the PCB mounting board, and the second programmable attenuation module is fixed on the mounting seat.

[0007] In some optional embodiments, it further includes a strengthening fixing plate. The strengthening fixing plate is fixed on the PCB mounting board, the first programmable attenuation module is fixed on the strengthening fixing plate, and the mounting seat is fixed on the strengthening fixing plate.

[0008] In some optional embodiments, the mounting seat includes a support platform, and support columns are fixed at the four corners of the support platform. One end of the support column is fixed on the support platform, and the other end is fixed on the strengthening fixing plate.

[0009] In some optional embodiments, a plurality of mounting holes for adapting to different sizes of the first programmable attenuation module are correspondingly provided on the strengthening fixing plate and the PCB mounting board at the installation position of the first programmable attenuation module.

[0010] In some optional embodiments, the mounting hole is a press riveting screw hole for installing press riveting screws.

[0011] In some alternative embodiments, it further includes an attenuator panel for installing input and output ports. The attenuator panel is vertically fixed to the bottom end of the PCB mounting board near the first programmable attenuator module through a fixing member.

[0012] In some alternative embodiments, the fixing member includes an integrally formed first mounting block and a second mounting block. The first mounting block is fixed to the bottom end of the PCB mounting board, and the second fixing block is fixed to the side of the attenuator panel.

[0013] In some alternative embodiments, reinforcing bars are fixed to both sides of the PCB mounting board.

[0014] In some alternative embodiments, two reinforcing bars are symmetrically fixed to the back of the PCB mounting board where the first programmable attenuator module is not installed.

[0015] Advantages of the present utility model:

[0016] The installation structure of the PXI phase shifter attenuator provided by the present utility model separates two programmable attenuator modules through a mounting seat, so that the two programmable attenuator modules can be stacked on a single PCB mounting board, which can save installation space. In addition, a reinforcing fixing plate is installed between the PCB mounting board and the programmable attenuator module to enhance the structural strength of the PCB mounting board. And in order to adapt to programmable attenuator modules of different sizes, mounting holes are provided at the installation positions of the PCB mounting board and the reinforcing fixing plate corresponding to the programmable attenuator modules, and rivet studs are reserved in the mounting holes, which can also increase the structural strength of the PCB board when not in use. In order to avoid the flexible deformation of the upper end of the PCB mounting board caused by the installation of devices at the bottom end of the PCB mounting board, reinforcing bars are fixed to the positions near the upper end of both sides of the PCB mounting board. Description of the drawings

[0017] Figure 1 Schematic diagram of the installation structure of the PXI phase shifter attenuator provided by an embodiment of the present utility model;

[0018] Figure 2 is Figure 1 side view of;

[0019] Figure 3 is Figure 1 rear view of;

[0020] Figure 4 Schematic diagram of the installation structure of the PXI phase shifter attenuator from another perspective provided by an embodiment of the present utility model.

[0021] Description of reference numerals:

[0022] 1 - PCB mounting board, 2 - first programmable attenuation module, 3 - mounting base, 31 - support platform, 32 - support column, 4 - second programmable attenuation module, 5 - reinforcement fixing plate, 6 - mounting hole, 7 - attenuator panel, 8 - fixing member, 81 - first mounting block, 82 - second mounting block, 9 - reinforcement bar. Detailed implementation mode

[0023] The following combines the embodiments and the attached drawings to further elaborate on the present invention in detail, but the implementation modes of the present invention are not limited thereto.

[0024] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc. is based on the orientation or positional relationship shown in the attached drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0025] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "provided with", "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] The following details the present invention by referring to the attached drawings and combining with embodiments:

[0027] Embodiment 1:

[0028] As Figures 1 to 2 shown, this embodiment provides an installation structure for a PXI phase shifter attenuator, including a first programmable attenuation module 2, a second programmable attenuation module 4, a mounting base 3, and a PCB mounting board 1. The first programmable attenuation module 2 is fixed on the PCB mounting board 1, the mounting base 3 covers the first programmable attenuation module 2 and is fixed on the PCB mounting board 1, and the second programmable attenuation module 4 is fixed on the mounting base 3.

[0029] The mounting base 3 includes a support platform 31, and support columns 32 are fixedly arranged at the four corners of the support platform 31. One end of each support column 32 is fixed to the support platform 31, and the other end is fixed to the reinforcement fixing plate 5. Through such a structure, the second programmable attenuation module 4 can be isolated from the first programmable attenuation module 2, enabling the first programmable attenuation module 2 and the second attenuation module to be stacked.

[0030] Since the PCB mounting board 1 is relatively thin, if the programmable attenuation module is directly mounted on the PCB mounting board 1, the mounting strength of the PCB mounting board 1 may be insufficient. Therefore, a reinforcement fixing plate 5 is provided between the PCB mounting board 1 and the programmable attenuation module. The reinforcement fixing plate 5 is fixed to the PCB mounting board 1, the first programmable attenuation module 2 is fixed to the reinforcement fixing plate 5, and the support columns 32 of the mounting base 3 are fixed to the reinforcement fixing plate 5. As Figure 1 shown, a plurality of bolt holes are provided on both side edges of the reinforcement fixing plate 5, and it can be fixed to the PCB mounting board 1 by means of bolts.

[0031] Specifically, in order to be able to mount programmable attenuation modules of different sizes, a number of mounting holes 6 for adapting to programmable attenuation modules of different sizes corresponding to the mounting position of the first programmable attenuation module 2 are provided on both the reinforcement fixing plate 5 and the PCB mounting board 1. As shown in the figure, this embodiment gives a mounting method of the mounting holes 6. There are four groups of mounting holes 6, and the four groups of mounting holes 6 are arranged corresponding to the four corners of the programmable attenuation module. And each group of mounting holes 6 has three mounting holes 6, and the three mounting holes 6 are arranged in a straight line along the diagonal. The outermost mounting holes 6 are used to fixedly mount the support columns 32, and the other two mounting holes 6 are used to mount programmable attenuation modules of different sizes.

[0032] It should be noted that the fixation mentioned in this application can be a detachable fixation method such as press riveting screw fixation or bolt fixation. In order to increase the structural strength of the PCB mounting board 1, the mounting holes 6 on the PCB mounting board 1 and the reinforcement fixing plate 5 are press riveting screw holes for installing press riveting screws. In this way, when the mounting holes 6 are not used, press riveting studs can also be placed in the mounting holes 6 to increase the strength of the PCB mounting board 1.

[0033] After being inserted into the PXI chassis, the input and output ports are input and output by the outer attenuator panel 7 for installing the input and output ports. The attenuator panel 7 for installing the input and output ports is vertically fixed to the bottom end of the PCB mounting board 1 close to the first programmable attenuation module 2 through a fixing member 8. The attenuator panel 7 is mounted in parallel with the programmable attenuation module.

[0034] Specifically, as shown in FIG. 3, the fixing member 8 includes a first mounting block 81 and a second mounting block 82 which are integrally formed. The first mounting block 81 is fixed to the bottom end of the PCB mounting board 1, and the second fixing block is fixed to the side of the attenuator panel 7. The first mounting block 81 and the second mounting block 82 can be stacked and mounted in a Z shape. It can be seen that the fixing holes of the first mounting block 81 are perpendicular to the direction of the PCB mounting board 1 and can be fixed by screws, bolts, etc. The fixing holes of the second mounting block 82 are perpendicular to the attenuator panel 7 and can be fixed by screws, bolts, etc.

[0035] As Figure 4 shown, in order to avoid the flexible deformation of the upper end of the PCB mounting board 1 caused by the installation of devices at the bottom end of the PCB mounting board 1, reinforcing bars 9 are fixed at the positions near the upper ends of the two sides of the PCB mounting board 1. The two reinforcing bars 9 are symmetrically fixed to the back of the PCB mounting board 1 where the first programmable attenuation module 2 is not installed.

[0036] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present invention. However, the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims

1. The installation structure of the PXI phase shift attenuator is characterized by: The invention comprises a first programmable attenuation module (2), a second programmable attenuation module (4), a mounting seat (3), and a PCB mounting plate (1); the first programmable attenuation module (2) is fixed on the PCB mounting plate (1); the mounting seat (3) is arranged above the first programmable attenuation module (2) and is fixed on the PCB mounting plate (1); and the second programmable attenuation module (4) is fixed on the mounting seat (3).

2. The installation structure of the PXI phase shift attenuator according to claim 1, characterized in that: It also includes a reinforcing fixing plate (5), the reinforcing fixing plate (5) is fixed on the PCB mounting plate (1), the first programmable attenuation module (2) is fixed on the reinforcing fixing plate (5), and the mounting seat (3) is fixed on the reinforcing fixing plate (5).

3. The installation structure of the PXI phase attenuator according to claim 2, characterized in that: The mounting seat (3) comprises a supporting platform (31), and supporting columns (32) are fixed at the four corners of the supporting platform (31). One end of the supporting column (32) is fixed to the supporting platform (31), and the other end is fixed to the reinforcing fixing plate (5).

4. The installation structure of the PXI phase attenuator according to claim 1, characterized in that: A plurality of mounting holes (6) for adapting to first programmable attenuation modules (2) of different sizes are provided on the reinforcing fixing plate (5) and the PCB mounting plate (1) at corresponding mounting positions of the first programmable attenuation module (2).

5. The installation structure of the PXI phase attenuator according to claim 4, characterized in that: The mounting hole (6) is a rivet screw hole for mounting a rivet screw.

6. The installation structure of the PXI phase attenuator according to claim 1, characterized in that: It also includes an attenuator panel (7) for installing the input and output ports. The attenuator panel (7) is vertically fixed to the bottom end of the PCB mounting plate (1) close to the first programmable attenuation module (2) through a fixing member (8).

7. The installation structure of the PXI phase attenuator according to claim 6, characterized in that: The fixing member (8) comprises a first mounting block (81) and a second mounting block (82) which are integrally formed, wherein the first mounting block (81) is fixed to the bottom end of the PCB mounting plate (1), and the second mounting block is fixed to the side of the attenuator panel (7).

8. The installation structure of the PXI phase attenuator according to claim 1, characterized in that: Reinforcement strips (9) are fixed to both side edges of the PCB mounting plate (1).

9. The installation structure of the PXI phase attenuator according to claim 8, characterized in that: The two reinforcing strips (9) are symmetrically fixed on the back side of the PCB mounting plate (1) where the first programmable attenuation module (2) is not installed.

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