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Measuring device and measuring method for measuring impedance of high-speed signal line in optical module

A high-speed signal and measurement device technology, applied in the field of optical communication, to achieve the effect of simple production, fast testing, flexible and convenient movement

Active Publication Date: 2021-08-13
深圳市迅特通信技术股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The impedance of the high-speed differential line from the gold finger of the optical module to the DSP has a mature test solution in the prior art, but there is no technical solution in the prior art that mentions how to measure the impedance between the DSP and the driver (driver) and between the DSP and the TIA. High Speed ​​Signal Line Impedance

Method used

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  • Measuring device and measuring method for measuring impedance of high-speed signal line in optical module
  • Measuring device and measuring method for measuring impedance of high-speed signal line in optical module
  • Measuring device and measuring method for measuring impedance of high-speed signal line in optical module

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Embodiment 1

[0057] Such as image 3 as shown, image 3 A measuring device for measuring the impedance of a high-speed signal line in an optical module in an embodiment of the present invention is shown, wherein the high-speed signal line to be measured in the optical module is communicated with a measuring instrument by means of the measuring device, such as Figure 6 The measurement system shown.

[0058] In this embodiment, the measuring device may include: a Mini-SMP connector 11 for connecting with the measuring instrument, a joint assembly 13 for connecting the high-speed signal line to be tested, and for connecting and supporting the Mini-SMP The connector and the clamp body 15 of the joint assembly.

[0059] The Mini-SMP connector 11 is used for bridging with the main equipment 17 (the main equipment is various measuring instruments), bridged through the radio frequency cable 18, and connects the measuring device to the main equipment 17.

[0060] The connector assembly includes...

Embodiment 2

[0083] The embodiment of the present invention also provides a measurement system for measuring the impedance of the high-speed signal line in the optical module, such as Figure 6 and Figure 7 As shown, it includes: a master device / measuring instrument and a measuring device for measuring the impedance of a high-speed signal line in an optical module described in any of the above-mentioned embodiments. line connected.

[0084] The main device is an impedance instrument such as a network analyzer or an impedance tester, and the high-speed signal line to be tested is a single-ended high-speed signal line or a differential high-speed signal line. If the high-speed signal line to be tested is a high-speed signal line to be tested on a PCB board, the test result is the impedance information of the high-speed signal line to be tested; if the high-speed signal line to be tested is a high-speed signal line to be tested on a PCBA, the The PCBA supplies power, and the test result at...

Embodiment 3

[0087] An embodiment of the present invention also provides a measurement method using the above-mentioned measurement system, which is characterized in that it includes:

[0088] 101. For the high-speed signal lines to be tested in the optical module, determine whether each of the high-speed signal lines to be tested has a disconnected area;

[0089] 102. If there is, weld the coupling capacitor for the disconnected area of ​​each high-speed signal line to be tested (such as Figure 7 The coupling capacitor in 19).

[0090] For example, the coupling capacitor can be a capacitor of 0.01uF~0.1uF;

[0091] 103. Correspondingly connecting each port of the joint assembly in the measuring device with the designated test point of the high-speed signal line to be tested;

[0092] 104. Start the main device of the measurement system, and acquire the test result of the high-speed signal line to be tested.

[0093] In practical applications, before step 101, it is also necessary to d...

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Abstract

The invention relates to a measuring device and a measuring method for measuring impedance of a high-speed signal line in an optical module. The high-speed signal line to be measured in the optical module is communicated with a measuring instrument by means of the measuring device, and the measuring device comprises a Mini-SMP connector, a joint assembly and a clamp body. The joint assembly includes: four ports; the clamp body comprises a first high-speed transmission line and a second high-speed transmission line which are parallel; a reference ground layer positioned below the two high-speed transmission lines; a port S1 of the joint assembly is communicated with a first signal line interface of the Mini-SMP connector through a first high-speed transmission line; a port S2 of the joint assembly is communicated with a second signal line interface of the Mini-SMP connector through a second high-speed transmission line; and the other two ports are communicated with a ground interface of the Mini-SMP connector through a reference ground layer. The measuring device can solve the industrial pain point that the impedance of a high-speed signal line in an optical module above 400G is very difficult to measure, and meanwhile has the advantages of being good in compatibility, low in cost, convenient to manufacture and easy to operate.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a measuring device and a measuring method for measuring the impedance of a high-speed signal line in an optical module. Background technique [0002] The data center is the core support platform of cloud computing. With the development of cloud computing, the scale of the data center network continues to expand, and the traffic increases sharply. To realize the internal optical network interconnection of the data center, optical modules are essential. The growth of computing power and internal data exchange capacity of data centers has also been driving the upgrade of optical network ports. In order to cope with the continuous growth of data center traffic, ultra-large-scale data centers upgrade the network system every three years on average. Domestic ultra-large-scale The data center is expected to start deploying 400G Ethernet in 2020, and 400G Ethernet will ente...

Claims

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Application Information

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IPC IPC(8): G01R27/02H04B10/07
CPCG01R27/02H04B10/07
Inventor 蒋昌明郑波过开甲魏志坚孙鼎张伟
Owner 深圳市迅特通信技术股份有限公司
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