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Electric signal scrambling device

An electrical signal and signal technology, applied in electrical components, transforming continuous pulse trains into pulse train devices with required modes, and pulse processing, etc., can solve the problems of difficulty in the reliability verification of hardware systems, and achieve a wide range of , high precision effect

Inactive Publication Date: 2009-06-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, how to control the narrow pulse signal, accurately apply electromagnetic interference to the signal under test, and conduct signal scrambling tests in a targeted manner is beyond the reach of current scrambling devices.
This makes the work of actual hardware system reliability verification more and more difficult

Method used

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0033] The electrical signal scrambling device described in the present invention is an electrical signal fault insertion device developed to verify the reliability of the digital circuit system. Level (high, low level), level interference, single-point electromagnetic interference, etc., disturb the original normal logic operation of the system, to verify whether the redundant protection measures of the system can be reliably started and then protect the system. Whether the system can recover automatically after the fault is canceled, whether there is an alarm, etc.

[0034] The design of the present invention refers to the following functions: ① single pulse or periodic glitch (narrow pulse) can be added to any signal line of the single board; ② the added glitch is synchronized with the electrical signal under test, and added The position of the burr is co...

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Abstract

The electric signal scrambling device includes scrambler and scrambling probe, which includes differential interface, scrambling level controlling switch, high-speed analog switch and step-up module; and is used to receive control signal from the said scrambler and apply a level interference, electromagnetic coupling interference, etc. with single narrow pulse or periodical pulse and fixed or controlled level to the measured signal. The high-speed analog switch can generate ns level single or periodical narrow pulse. The scrambler includes sync signal input interface, clock phase regulating module, thrumbwheel switch, control signal generator module, and differential output interface. The present invention can apply various interference to the measured signal.

Description

technical field [0001] The invention relates to an electronic instrument, especially a device capable of exerting various disturbances on electrical signals. Background technique [0002] With the continuous improvement of digital circuit integration and faster speed, the complexity and speed of the hardware system composed of it are also increasing, and the functions are also increasing, and the reliability requirements of the hardware system are also increasing. High, but at the same time the hardware system is becoming more and more sensitive to signal interference, so how to improve the reliability of the hardware system is a problem that people are concerned about. One solution is to perform various tests on the hardware system. For example, the level scrambling test is a method for testing the robustness of the system by artificially simulating the interference received by the signal. This method needs to artificially create various interference signals that may be ge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K5/00H03K5/156
Inventor 赵春记
Owner HUAWEI TECH CO LTD
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