CN-121984612-A - Signal receiving and transmitting unit test fixture and operation method thereof

Abstract

The invention belongs to the technical field of signal receiving and transmitting unit test fixtures, and particularly relates to a signal receiving and transmitting unit test fixture and an operation method thereof. The test fixture comprises a mounting surface arranged on a bottom plate, guide rails fixedly arranged on the mounting surface of the bottom plate, guide rails arranged in one-to-one correspondence with external interfaces, longitudinal sections of guide rail grooves in the guide rails parallel to the axes of the external interfaces, an isosceles trapezoid shape in longitudinal section, an included angle of two waist extension lines of 10-20 degrees, a minimum distance between the guide rail grooves, the thickness of a module to be tested, the maximum distance between the guide rail grooves, positioning blocks fixedly arranged on left and right sides of the front end of the bottom plate, the positioning blocks used for positioning the test fixture and the test equipment, and locking frames arranged at the rear end of the bottom plate and used for locking the test fixture and a workbench. The test fixture provided by the invention can be used for rapidly realizing interconnection of the signal modulation module and the signal demodulation module with the PXI chassis, simultaneously testing a plurality of modules at one time, has high test efficiency, and can meet the heat dissipation requirement by installing the heat dissipation fan.

Inventors

• WANG ZHIWEN
• ZHANG YONGHU
• WANG JINJUN
• HU PEIJUN
• SUN HAIBO
• ZHAO JIANBO
• WANG JIANCHAO
• TAO FANGSHENG

Assignees

• 中电科思仪科技股份有限公司

Dates

Publication Date

20260505

Application Date

20260210

Claims (10)

1. 1. A signal transceiver unit test fixture for interconnecting a module under test to an external interface (71) of a test device, comprising: a base plate (1) provided with a mounting surface (11); The guide rail (4) is fixedly arranged on the mounting surface (11) of the bottom plate (1), the guide rail (4) and the external interface (71) are arranged in one-to-one correspondence, and the axis of a guide rail groove (41) in the guide rail (4) is parallel to the axis of the external interface (71), the longitudinal section of the guide rail groove (41) is in an isosceles trapezoid shape, and the included angle of two waist extension lines is 10-20 degrees; The positioning block (5) is fixedly arranged at the left side part and the right side part of the front end of the bottom plate (1), and the positioning block (5) is used for positioning the test fixture and the test equipment; And the locking frame (6) is arranged at the rear end of the bottom plate (1) and is used for locking the test fixture and the workbench.
2. 2. The test fixture for the signal transceiver unit according to claim 1, further comprising a cooling fan (2), wherein a vent (14) is formed in the bottom plate (1), the cooling fan (2) is fixed below the bottom plate (1), and the installation position of the cooling fan (2) corresponds to the position of the vent (14).
3. 3. A signalling unit testing fixture according to claim 2, characterized in that the base plate (1) is provided with downwardly protruding studs (13).
4. 4. The signaling unit testing jig according to claim 1, wherein the plurality of guide rails (4) are mounted in parallel on the mounting surface (11) of the base plate (1).
5. 5. The test fixture for signal transceiver units according to claim 1, wherein the locking frame (6) is in a "U" shape, the locking lever one (61) is screw-fitted above, the locking lever two (62) is screw-fitted below, and the locking lever one (61) and the locking lever two (62) are moved in a direction perpendicular to the mounting surface (11).
6. 6. The signal transceiver unit test fixture according to claim 1, characterized in that feet (3) are mounted at four corners of the base plate (1), the feet (3) comprising screws (31) and nuts (32) for adjusting the mounting surface (11) to be level with the horizontal plane.
7. 7. The test fixture for a signal transceiver unit according to claim 1, characterized in that the material hardness of the guide rail (4) is smaller than the hardness of the module to be tested.
8. 8. The test fixture for a signal transceiver unit according to claim 1, wherein the material of the guide rail (4) is polytetrafluoroethylene.
9. 9. A method of operating a test fixture for a signal transceiver unit, the test fixture for a signal transceiver unit being as claimed in any one of claims 1 to 8, comprising the steps of: s1, moving a clamp to enable a positioning block (5) to be in contact with test equipment and to be positioned; s2, adjusting the locking frame (6) to fix the test fixture and the workbench; s3, placing the modules to be tested in the guide rail (4), pushing the plurality of modules to be tested to the testing equipment along the guide rail (4) until the modules to be tested are interconnected with an external interface (71) of the testing equipment, and testing; s4, after the test is completed, the plurality of modules to be tested are pulled away from the test equipment along the guide rail (4) until the modules to be tested are completely separated from the guide rail (4).
10. 10. The method for operating a test fixture for a signal transceiver unit according to claim 9, further comprising the steps of starting a cooling fan (2) to perform forced air cooling heat dissipation when a built-in temperature sensor of a module to be tested detects that the temperature is higher than Ta in the test, and closing the cooling fan (2) when the built-in temperature sensor of the module to be tested detects that the temperature is lower than Tb, wherein Ta and Tb are normal test temperature thresholds of the module to be tested.

Description

Signal receiving and transmitting unit test fixture and operation method thereof Technical Field The invention belongs to the technical field of signal receiving and transmitting unit test fixtures, and particularly relates to a signal receiving and transmitting unit test fixture and an operation method thereof. Background The signal receiving and transmitting unit can simultaneously complete signal receiving and transmitting, and high-speed and large-capacity storage and processing are carried out on signal data, so that the signal receiving and transmitting unit can be widely applied to the fields of semiconductor testing, 5G testing, internet of things testing, radar testing and the like. The signal modulation module and the signal demodulation module are important components of the signal receiving and transmitting unit, and in order to ensure that the performance indexes such as the frequency range, the power range, the inter-channel isolation and the like of the input and output signals of the signal modulation module and the signal demodulation module meet the requirements, the signal modulation module and the signal demodulation module need to be tested in the development process. Test equipment is a rugged PC-based measurement and automation platform promulgated by the PXI alliance, simply PXI chassis. The signal modulation module and the signal demodulation module need to be interconnected with the PXI case in the test process, the two modules are large in outline size and cannot be installed in the PXI case, and an external interconnection interface of the PXI case is designed. Because the outside of the PXI chassis is not provided with a positioning guide device required by interconnection, the signal modulation module and the signal demodulation module can only rely on manual visual observation when being interconnected with the PXI chassis, the adjustment and the adaptation are required to be repeatedly regulated, and only a single module can be tested at a time, so that the testing efficiency is seriously influenced. Besides the low test efficiency caused by the interconnection operation, the heat dissipation fan built in the PXI chassis cannot meet the heat dissipation requirements of the signal modulation module and the signal demodulation module. Disclosure of Invention In order to solve the problems in the prior art, the invention provides the test fixture for the signal transceiver unit and the operation method thereof, which can quickly realize the interconnection of the signal modulation module and the signal demodulation module with the PXI chassis, can simultaneously test a plurality of modules at one time, effectively improve the test efficiency, and can meet the heat dissipation requirement by installing the heat dissipation fan on the test fixture. The technical scheme adopted by the invention for solving the technical problems is that the signal receiving and transmitting unit test fixture is applied to interconnecting an external interface of a module to be tested and test equipment and comprises the following components: A base plate provided with a mounting surface; The device comprises a bottom plate, guide rails, a plurality of external interfaces, a plurality of guide rail grooves and a plurality of guide rail grooves, wherein the guide rails are fixedly arranged on a mounting surface of the bottom plate, the guide rails are arranged in one-to-one correspondence with the external interfaces, and the axes of the guide rail grooves in the guide rails are parallel to the axes of the external interfaces; The positioning block is fixedly arranged at the left side part and the right side part of the front end of the bottom plate and is used for positioning the test fixture and the test equipment; And the locking frame is arranged at the rear end of the bottom plate and used for locking the test fixture with the workbench. Preferably, the radiator also comprises a radiator fan, the bottom plate is provided with a vent, the radiator fan is fixed below the bottom plate, and the installation position of the radiator fan corresponds to the position of the vent. Preferably, the bottom plate is provided with downwardly protruding studs. Preferably, a plurality of guide rails are mounted in parallel on the mounting surface of the floor. Preferably, the locking frame is U-shaped, the locking rod I is assembled on the upper side in a threaded manner, the locking rod II is assembled on the lower side in a threaded manner, and the locking rod I and the locking rod II move along the direction perpendicular to the mounting surface. Preferably, feet are mounted at the four corners of the base plate, the feet including screws and nuts for adjusting the mounting surface to be flush with the horizontal surface. Preferably, the material hardness of the guide rail is smaller than the hardness of the module to be tested. Preferably, the material of the guide rail is polytetrafluoroethylene. The opera