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hdmi high speed signal test fixture and test method

A high-speed signal and test fixture technology, applied in the direction of measuring devices, measuring electrical variables, measuring device casings, etc., can solve the problems of high cost and complicated operation, and achieve the effects of reducing test costs, convenient operation and novel design

Active Publication Date: 2019-04-30
FUJIAN LANDI COMML EQUIP CO LTD
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Problems solved by technology

[0003] The present invention makes improvements to the problems existing in the above-mentioned existing test schemes, that is, the technical problem to be solved by the present invention is to provide a HDMI high-speed signal test fixture and method, which helps to solve the problems of high cost and complicated operation in the current test schemes. question

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  • hdmi high speed signal test fixture and test method

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Embodiment Construction

[0026] In order to make the technical solution, purpose and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] The invention provides a HDMI high-speed signal test fixture, which includes an HDMI male head, a TMDS high-speed signal termination pull-up module, and a low-speed signal module, and the TDMS high-speed signal termination pull-up module is used for simulating a receiving device TMDS high-speed signal The terminal is pulled up to 3.3V, and the low-speed signal module is used to realize that the source device under test can stably detect the insertion of the HDMI test fixture, and the EEPROM communication between the source device under test and the HDMI test fixture; The HDMI high-speed signal test fixture also performs impedance control on TMDS high-speed traces.

[0028] The terminal pull-up and impedance control module and the low-speed ...

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Abstract

The invention relates to an HDMI (high definition multimedia interface) high-speed signal testing clamp and a testing method. The HDMI high-speed signal testing clamp comprises the design of an HDMI male head, a TMDS (transition minimized differential signaling) high-speed signal head joint pull-up and impedance control module and a low-speed signal module, when an HDMI high-speed signal of source end equipment is tested, the HDMI male head of the testing clamp is inserted into an HDMI female socket of the source end equipment, the HDMI high-speed signal is tested by a universal high-bandwidth point measurement probe or a welding probe at an exposed TMDS routing tail end of the clamp, so that the testing cost is greatly lowered, operations are simple and convenient, and great convenience is brought for the testing.

Description

technical field [0001] The invention relates to the field of signal integrity design and testing, in particular to an HDMI high-speed signal testing fixture and method. Background technique [0002] With the wide application of HDMI (High-Definition Multimedia Interface) technology in consumer electronics and display fields, the share and rate of HDMI interface continue to increase, and the demand for HDMI high-speed signal design and testing is becoming more and more urgent, especially in HDMI high-speed In terms of testing, currently only the three major oscilloscope giants in the world have relatively complete HDMI high-speed signal testing solutions, but they are all expensive. You need to purchase HDMI test probes and accessories separately, and some need an additional voltage regulator. The connection is complex and difficult to operate. Contents of the invention [0003] The present invention makes improvements to the problems existing in the above-mentioned existi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R1/04
CPCG01R1/0416G01R1/0425
Inventor 周少施唐灏
Owner FUJIAN LANDI COMML EQUIP CO LTD
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