VGA signal test fixture

A signal test, VGA interface technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve problems such as difficult operation, unfavorable use, complicated equipment, etc., to achieve easy portability and installation, improve production efficiency, and reduce work effect of difficulty

Inactive Publication Date: 2019-10-25
SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, VGA interface signal detection usually requires special fixtures and oscilloscopes for measurement, which is difficult to operate in production lines or computer rooms.
[0004] Existing scheme 1: Mount a test monitor on the VGA interface, and detect the state of the VGA interface by controlling the host computer to output test graphics. However, this scheme uses the monitor only to detect the output state of the VGA, and cannot be effective for failures such as black screens. Analysis
[0005] Existing solution 2: After the VGA interface is connected to the jig, use an oscilloscope to measure the signal transferred from the jig, and judge the status of the VGA interface by observing and comparing the signal level, frequency, timing and other information. This scheme is complicated and bulky, which is not conducive to It is used in complex environments such as computer rooms, and the detection results need to be analyzed by professional and technical personnel. The technical threshold is high, which is not conducive to the rapid and efficient detection of VGA signals.

Method used

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  • VGA signal test fixture
  • VGA signal test fixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, the present invention provides a kind of VGA signal test fixture, comprising: VGA interface 1, dummy load 2, detection module 3, signal indicator light 4, the power output end of VGA interface 1 is connected with the power input end of detection module 2 , the signal output end of the VGA interface 1 is connected to the signal input end of the detection module 3 through the dummy load 2, the communication end of the VGA interface 1 is connected to the communication end of the detection module 3, and the signal output end of the detection module 3 is connected to one end of the signal indicator light 4 Connect, the other end of the signal indicator light 4 is grounded.

[0028] Wherein, the signals of the VGA interface 1 include three primary color signals, a vertical synchronization signal (VSYNC), and a horizontal synchronization signal (HSYNC). The specific connection relationship is: the pin 9 of the VGA interface 1 is connected to the pow...

Embodiment 2

[0037] Such as Figure 4 As shown, the embodiment of the present invention also provides a VGA signal test fixture, which is different from the embodiment in that it also includes a USB interface 5 , and the power output end of the USB interface 5 is connected to the power input end of the detection module 3 .

[0038]Preferably, the embodiment of the present invention also includes a power indicator light 6, one end of the power indicator light 6 is connected to the power output end of the VGA interface 1 and the parallel output end of the USB interface 5 power output end, and the other end is grounded, which can be adjusted according to the power supply situation. The indicator feedback can intuitively reflect the working condition of the power supply.

[0039] The output voltage of the power output end of the VGA interface 1 and the power output end of the USB interface 5 is 5V.

[0040] The specific steps can be:

[0041] First power on and start the server;

[0042] In...

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Abstract

To solve the problems in the prior art, a VGA signal test fixture is innovatively provided by the invention. The VGA signal test fixture comprises a VGA interface, a virtual load, a detection module and a signal indicator lamp, the power output end of the VGA interface is connected with the power input end of the detection module, the signal output end of the VGA interface is connected with the signal input end of the detection module through the virtual load, the communication end of the VGA interface is connected with the communication end of the detection module, the signal output end of the detection module is connected with one end of the signal indicator lamp, and the other end of the signal indicator lamp is grounded. The VGA signal test fixture is convenient to carry and install, the detection result of the VGA interface can be quickly obtained, the VGA fault point is accurately positioned, the working difficulty of maintenance work is reduced without the measurement of complexand heavy equipment such as an oscilloscope and the like, the VGA signal test fixture can visually detect signal faults, is simple, convenient and easy to operate, and the high efficiency of VGA signal detection is effectively improved.

Description

technical field [0001] The invention relates to the field of signal testing, in particular to a VGA signal testing fixture. Background technique [0002] At present, a VGA (Video Graphics Array, video graphics array) interface is the most common and widely used video display interface. Although with the development of high-definition display technology, the proportion of VGA interface is decreasing, but due to its low cost, strong scalability, and support for high-definition display, VGA interface is still widely used in servers, industrial computers, monitoring and other fields. [0003] Due to the wide application of the VGA interface, abnormal VGA signals often cause display output failures, such as black screen, color cast, moiré, and ghost images. However, VGA interface signal detection usually requires special fixtures and oscilloscopes for measurement, which is difficult to operate in production lines or computer rooms. [0004] Existing scheme 1: Mount a test monit...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor高志伟
OwnerSUZHOU LANGCHAO INTELLIGENT TECH CO LTD