Radio frequency wired test system for hplc modules

Abstract

The utility model provides a kind of HPLC module's radio frequency wired test system, it is related to testing technical field, including shielding box and HPLC test system, by arranging multiple HPLC modules to be measured in shielding box, when testing, the channel center frequency of any two HPLC modules to be measured is not less than the difference of preset bandwidth, to this simultaneously test multiple HPLC modules to be measured is realized, shielding external environment interference is shielded by shielding box, the mutual influence between HPLC modules to be measured is reduced by the channel center frequency of any two HPLC modules to be measured is not less than the difference of preset bandwidth, to guarantee the accuracy of test, solve the problem of low efficiency of existing HPLC module wired test, the utility model is applicable to simultaneously test multiple HPLC module radio frequency.

Description

Technical Field

[0001] This utility model relates to the field of testing technology, and in particular to a wired radio frequency testing system for HPLC modules. Background Technology

[0002] The radio frequency of the HPLC dual-mode module is 470MHz to 510MHz. Wired testing of HPLC modules is usually performed by a single module, which results in low testing efficiency. Existing technology cannot perform multiple tests simultaneously because the interference is too strong, affecting the accuracy of the test. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a radio frequency wired testing system for HPLC modules, which solves the problem of low wired testing efficiency of existing HPLC modules.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a wired radio frequency test system for HPLC modules, including a shielded box and an HPLC test system. Multiple HPLC modules to be tested are arranged inside the shielded box. Each HPLC module to be tested includes an RFTP test point, a communication interface, and a power interface. The RFTP test point of each HPLC module to be tested is connected to the HPLC test system through a radio frequency connection cable. The communication interface and power interface of each HPLC module to be tested are connected to the HPLC test system. During the test, the channel center frequencies of any two HPLC modules to be tested differ by no less than a preset bandwidth.

[0005] Furthermore, the shielding box has an isolation level greater than 70dB.

[0006] Furthermore, the plurality of HPLC modules to be tested comprises eight modules, with a test frequency band ranging from 470MHz to 510MHz and a preset bandwidth of 500kHz. The center frequencies corresponding to the low-frequency band of the eight modules to be tested are 470.1MHz, 470.6MHz, 471.1MHz, 471.6MHz, 472.1MHz, 472.6MHz, 473.1MHz, and 473.6MHz, respectively; the center frequencies corresponding to the mid-frequency band of the eight modules to be tested are 488.1MHz, 488.6MHz, 489.1MHz, 489.6MHz, 490.1MHz, 490.6MHz, 491.1MHz, and 491.6MHz, respectively; and the center frequencies corresponding to the high-frequency band of the eight modules to be tested are 506.1MHz, 506.6MHz, 507.1MHz, 507.6MHz, 508.1MHz, 508.6MHz, 509.1MHz, and 509.6MHz, respectively.

[0007] The beneficial effects of this utility model are as follows: This utility model provides a wired radio frequency testing system for HPLC modules, including a shielded box and an HPLC testing system. By arranging multiple HPLC modules to be tested inside the shielded box, during testing, the channel center frequencies of any two HPLC modules to be tested differ by no less than a preset bandwidth, thereby enabling simultaneous testing of multiple HPLC modules to be tested. The shielded box shields against external environmental interference, and the fact that the channel center frequencies of any two HPLC modules to be tested differ by no less than the preset bandwidth reduces the mutual influence between the HPLC modules to be tested, thus ensuring the accuracy of the test and solving the problem of low efficiency in existing wired testing of HPLC modules. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the connection relationship of an HPLC module's radio frequency wired testing system provided by this utility model. Detailed Implementation

[0009] This invention addresses the problem of low wired testing efficiency in existing HPLC modules by providing a radio frequency (RF) wired testing system for HPLC modules, such as... Figure 1 As shown, the system includes a shielded box and an HPLC testing system. Multiple HPLC modules to be tested are arranged inside the shielded box to form a panel module. Each HPLC module to be tested includes an RFTP test point, a communication interface, and a power interface. The RFTP test point of each HPLC module to be tested is connected to the HPLC testing system via an RF connection cable. The communication interface and power interface of each HPLC module to be tested are connected to the HPLC testing system. During testing, the channel center frequencies of any two HPLC modules to be tested differ by no less than a preset bandwidth.

[0010] To reduce interference from the external environment, the shielding box has an isolation level greater than 70dB.

[0011] To reduce the mutual interference between the HPLC modules to be tested, the preset bandwidth is 200kHz or 500kHz.

[0012] Taking a panelized module consisting of 8 HPLC modules to be tested as an example, where the channel center frequencies of any two HPLC modules to be tested differ by a preset bandwidth of 500kHz, the low-frequency center frequencies corresponding to the 8 modules to be tested are FC, FC+1×BW, FC+2×BW, FC+3×BW, FC+4×BW, FC+5×BW, FC+6×BW, FC+7×BW and FC+8×BW, where FC represents the channel center frequency of the first HPLC module to be tested and BW represents the preset bandwidth.

[0013] For example, the center frequencies corresponding to the low-frequency bands of the eight modules under test are 470.1MHz, 470.6MHz, 471.1MHz, 471.6MHz, 472.1MHz, 472.6MHz, 473.1MHz, and 473.6MHz, respectively; the center frequencies corresponding to the mid-frequency bands of the eight modules under test are 488.1MHz, 488.6MHz, 489.1MHz, 489.6MHz, 490.1MHz, 490.6MHz, 491.1MHz, and 491.6MHz, respectively; and the center frequencies corresponding to the high-frequency bands of the eight modules under test are 506.1MHz, 506.6MHz, 507.1MHz, 507.6MHz, 508.1MHz, 508.6MHz, 509.1MHz, and 509.6MHz, respectively.

[0014] Specifically, a guard interval bandwidth can be added on top of the preset bandwidth. This means that the channel center frequencies of any two HPLC modules under test differ by more than the preset bandwidth. The channel center frequencies of the eight HPLC modules under test are FC, FC+1×BW+1×GI, FC+2×BW+2×GI, FC+3×BW+3×GI, FC+4×BW+4×GI, FC+5×BW+5×GI, FC+6×BW+6×GI, FC+7×BW+7×GI, and FC+8×BW+8×GI. Here, FC represents the channel center frequency of the first HPLC module under test, BW represents the preset bandwidth, and GI represents the guard interval bandwidth. GI can be equal to BW. This further reduces adjacent-channel interference and enhances anti-interference capabilities, building upon the previous example.

Claims

1. A wired radio frequency testing system for an HPLC module, characterized in that, The test includes a shielded enclosure and an HPLC testing system. The shielded enclosure contains multiple HPLC modules to be tested. Each HPLC module to be tested includes an RFTP test point, a communication interface, and a power interface. The RFTP test point of each HPLC module to be tested is connected to the HPLC testing system via an RF connection cable. The communication interface and power interface of each HPLC module to be tested are also connected to the HPLC testing system. During testing, the channel center frequencies of any two HPLC modules to be tested must differ by no less than a preset bandwidth.

2. The RF wired testing system for the HPLC module according to claim 1, characterized in that, The shielding box provides an isolation level greater than 70dB.

3. The RF wired testing system for the HPLC module according to claim 1, characterized in that, The plurality of HPLC modules to be tested consists of eight modules, with a test frequency band of 470MHz to 510MHz and a preset bandwidth of 500kHz. The center frequencies corresponding to the low frequency band of the eight modules to be tested are 470.1MHz, 470.6MHz, 471.1MHz, 471.6MHz, 472.1MHz, 472.6MHz, 473.1MHz, and 473.6MHz, respectively; the center frequencies corresponding to the mid frequency band of the eight modules to be tested are 488.1MHz, 488.6MHz, 489.1MHz, 489.6MHz, 490.1MHz, 490.6MHz, 491.1MHz, and 491.6MHz, respectively; and the center frequencies corresponding to the high frequency band of the eight modules to be tested are 506.1MHz, 506.6MHz, 507.1MHz, 507.6MHz, 508.1MHz, 508.6MHz, 509.1MHz, and 509.6MHz, respectively.

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