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A kind of oscilloscope with multi-purpose multiplexing interface

An oscilloscope and multi-purpose technology, applied in the direction of instruments, digital variable display, electrical measuring instrument components, etc., can solve the problems of high cost, DAC accuracy and temperature drift, and affect the accuracy of calibration signals, etc., to achieve low temperature drift , high precision effect

Active Publication Date: 2016-08-10
RIGOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The calibration signal generation module uses DAC, which brings DAC accuracy and temperature drift problems, affects the accuracy of the calibration signal, and the cost is relatively high

Method used

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  • A kind of oscilloscope with multi-purpose multiplexing interface
  • A kind of oscilloscope with multi-purpose multiplexing interface
  • A kind of oscilloscope with multi-purpose multiplexing interface

Examples

Experimental program
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Effect test

Embodiment 1

[0039] see figure 2 , figure 2It is a structural schematic diagram of an oscilloscope with a multi-purpose multiplexing interface. The oscilloscope of the present invention includes a signal input terminal 210, an analog front-end circuit 220, a trigger module 230, an A / D conversion module 240, a control processing module 250, a trigger output module 260, a calibration The signal generation module 270 , the first switch module 300 , the second switch module 310 , the third switch module 320 , the fast edge signal generation module 280 and the multiplexing output terminal 290 .

[0040] The measured signal of the oscilloscope is input to the analog front-end circuit 220 by the signal input terminal 210, one output of the analog front-end circuit 220 is connected to the input of the A / D conversion module 240, and the other output of the analog front-end circuit 220 is connected to the input of the trigger module 230, The output ends of the A / D conversion module 240 and the tr...

Embodiment 2

[0058] see Figure 4 , Figure 4 It is a detailed circuit diagram of an embodiment of an oscilloscope with a multipurpose multiplexing interface in the present invention:

[0059] The circuit includes a trigger output module, a ground output terminal, a fast-edge signal generation module, a calibration signal generation module, a relay, and a multiplexing interface terminal. The calibration signal generation module includes a voltage reference circuit, a voltage divider circuit, a multiplexer, and a conditioning circuit. The relay is a specific embodiment of the switch module.

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Abstract

The invention provides an oscilloscope with a multipurpose multiplex interface. The oscilloscope with the multipurpose multiplex interface includes a signal input terminal, an analog front end circuit, a trigger module, a trigger output module, a calibrating signal generating module and a fast edge signal generating module, wherein the trigger output module, the calibrating signal generating module and the fast edge signal generating module are respectively connected with a control processing module, are further connected with three series-connected switch modules controlled by the control processing module, and finally connected with a multiplex output terminal to output signals. The oscilloscope with the multipurpose multiplex interface provides a multipurpose output interface, and unites a plurality of terminals into one multiplex output terminal so that a user can select the type of terminal output signal on an operation interface of a software, thereby facilitating the easy using of the user.

Description

technical field [0001] The invention relates to the technical field of oscilloscopes, in particular to an oscilloscope with a multipurpose interface. Background technique [0002] Existing digital oscilloscopes generally provide various input and output interfaces for users to use. The common ones are communication interface, signal input and probe compensation output. Some machines also provide 10MHz synchronous input and output, trigger output, calibration output, fast edge signal output and other interfaces. Common interface connectors include BNC terminals and SMA terminals. [0003] Mid-to-high-end oscilloscopes generally provide a trigger output terminal. The trigger output terminal generally outputs a pulse. The edge of the trigger output pulse is synchronized with the trigger of the oscilloscope, and the frequency of the trigger output pulse is consistent with the refresh rate of the oscilloscope. The pulse comes from the output of the trigger module, and the pulse ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R13/02G01R1/28
Inventor 史慧王悦王铁军李维森
Owner RIGOL