CN104459595A - Oscilloscope checking system and method - Google Patents
Oscilloscope checking system and method Download PDFInfo
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- CN104459595A CN104459595A CN201410821990.5A CN201410821990A CN104459595A CN 104459595 A CN104459595 A CN 104459595A CN 201410821990 A CN201410821990 A CN 201410821990A CN 104459595 A CN104459595 A CN 104459595A
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- power splitter
- oscillograph
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Abstract
The invention provides an oscilloscope checking system and method. The oscilloscope checking system comprises a power divider, a plurality of to-be-tested probes and an oscilloscope. The input end of the power divider is connected with input signals to divide the input signals into a plurality of channels of signals and then output the divided signals. One ends of the to-be-tested probes are connected to the signal output end of the power divider, the other ends of the to-be-tested probes are connected to channels of the oscilloscope through adaptors to carry out time delay checking on the multiple channels of the oscilloscope at the same time. According to the oscilloscope checking system and method, time offset (time delay) among the probes of the channels through the power divider before testing is measured, then the tested time offset is added to parameters of the oscilloscope, and therefore the efficiency and the accuracy of testing are improved.
Description
Technical field
The present invention relates to a kind of verification of testing tool signal time delay, particularly relate to a kind of time delay verification accessing the probe of oscillographic different passage.
Background technology
When measuring the signal of several passage at the same time, because the length of transmission line of probe is different, the not equal reason of the probe circuit of different model, the time of causing the signal of different passage to be transferred to trigger circuit from signal source is different, thus making signal between different passage in sequential, create the phenomenon of skew, this shift phenomenon directly can have influence on the accuracy of test result.So before testing, need first to verify different probes.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of oscillograph check system and method, for solving the problem accurately can not measuring the time delay of dissimilar probe in oscilloscope measurement in prior art fast.
For achieving the above object and other relevant objects, the invention provides a kind of oscillograph check system, comprise, power splitter, its input end is connected with input signal, exports so that described input signal is divided into multiple signals; Multiple probe to be measured, one end of multiple described probe to be measured is connected to the signal output part of described power splitter, the other end of multiple described probe to be measured is connected on oscillographic passage by breakout box, to carry out time delay verification to described oscillographic multiple passage simultaneously.
Optionally, the signal that described input signal is divided into multichannel identical by described power splitter exports.
Optionally, the input end of described power splitter is connected with described input signal by microwave high-frequency connecting line.
For achieving the above object and other relevant objects, the present invention also provides a kind of oscillograph method of calibration, comprises the steps: input end input signal being connected to power splitter; One end of multiple probe to be measured is connected to the signal output part of described power splitter, the other end of multiple described probe to be measured is connected on oscillographic passage by breakout box; Time delay verification is carried out to described oscillographic multiple passage simultaneously.
Optionally, the signal that described input signal is divided into multichannel identical by described power splitter exports.
Optionally, the input end of described power splitter is connected with described input signal by microwave high-frequency connecting line.
As mentioned above, a kind of oscillograph check system of the present invention and method, first by power splitter, the time offset (i.e. time delay) between each passage probe is measured before test, then the side-play amount tested out is added in oscillographic parameter, thus improve the Efficiency and accuracy of test.
Accompanying drawing explanation
Fig. 1 is shown as a kind of oscillograph check system of the present invention module diagram in one embodiment.
Fig. 2 is shown as a kind of oscillograph method of calibration of the present invention schematic flow sheet in one embodiment.
Element numbers explanation
1 oscillograph check system
11 power splitters
12 probes to be measured
13 oscillographs
14 breakout boxs
S11 ~ S13 step
Embodiment
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this instructions can understand other advantages of the present invention and effect easily.
Refer to Fig. 1 to Fig. 2.Notice, structure, ratio, size etc. that this instructions institute accompanying drawings illustrates, content all only in order to coordinate instructions to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the present invention can produce and the object that can reach, still all should drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, quote in this instructions as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.
Refer to Fig. 1, be shown as a kind of oscillograph check system of the present invention module diagram in one embodiment.Described system 1 comprises power splitter 11, multiple probe 12 to be measured and oscillograph 13.
The input end of described power splitter 11 is connected with input signal, exports so that described input signal is divided into multiple signals.The full name of described power splitter 11 is power divider (Power divider), a kind ofly a road input signal energy is divided into two-way or multiple-channel output is equal or the device of unequal energy, also conversely multiple signals energy can be synthesized a road to export, now can also referred to as combiner.In this embodiment, described input signal is divided into the identical signal of multichannel and exports by preferred described power splitter 11.And the input end of described power splitter 11 is connected with described input signal by microwave high-frequency (SMA) connecting line.The spendable highest frequency of microwave high-frequency (SMA) connecting line is 27GHz.It has the distinguishing features such as high strength, high-durability, high reliability and low VSWR.
One end of multiple described probe 12 to be measured is connected to the signal output part of described power splitter 11, the other end of multiple described probe 12 to be measured is connected to by breakout box 14 on the passage of oscillograph 13, to carry out time delay verification to multiple passages of described oscillograph 13 simultaneously.
Oscillograph check system 1 shown in Fig. 1 is first measured the time offset (i.e. time delay) between each passage probe 12 by power splitter 11 before test, then the side-play amount tested out is added in the parameter of oscillograph 13, thus improve the Efficiency and accuracy of test.
Refer to Fig. 2, be shown as a kind of oscillograph method of calibration of the present invention schematic flow sheet in one embodiment.Described oscillograph method of calibration comprises the steps:
S11: input end input signal being connected to power splitter, carry out exporting the full name of described power splitter 11 for power divider (Power divider) described input signal to be divided into multiple signals, a kind ofly a road input signal energy is divided into two-way or multiple-channel output is equal or the device of unequal energy, also conversely multiple signals energy can be synthesized a road to export, now can also referred to as combiner.In this embodiment, described input signal is divided into the identical signal of multichannel and exports by preferred described power splitter 11.And the input end of described power splitter 11 is connected with described input signal by microwave high-frequency (SMA) connecting line.The spendable highest frequency of microwave high-frequency (SMA) connecting line is 27GHz.It has the distinguishing features such as high strength, high-durability, high reliability and low VSWR.
S12: signal output part one end of multiple probe to be measured being connected to described power splitter, the other end of multiple described probe to be measured is connected on oscillographic passage by breakout box.
S13: simultaneously time delay verification is carried out to described oscillographic multiple passage.
Oscillograph method of calibration shown in Fig. 2 is first measured the time offset (i.e. time delay) between each passage probe by power splitter before test, then the side-play amount tested out is added in oscillographic parameter, thus improve the Efficiency and accuracy of test.
In sum, a kind of oscillograph check system of the present invention and method, first by power splitter, the time offset (i.e. time delay) between each passage probe is measured before test, then the side-play amount tested out is added in oscillographic parameter, thus improve the Efficiency and accuracy of test.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (6)
1. an oscillograph check system, is characterized in that, comprises,
Power splitter, its input end is connected with input signal, exports described input signal to be divided into multiple signals;
Multiple probe to be measured, one end of multiple described probe to be measured is connected to the signal output part of described power splitter, the other end of multiple described probe to be measured is connected on oscillographic passage by breakout box, to carry out time delay verification to described oscillographic multiple passage simultaneously.
2. oscillograph check system according to claim 1, is characterized in that: the signal that described input signal is divided into multichannel identical by described power splitter exports.
3. oscillograph check system according to claim 1, is characterized in that: the input end of described power splitter is connected with described input signal by microwave high-frequency connecting line.
4. an oscillograph method of calibration, is characterized in that, comprises the steps:
Input signal is connected to the input end of power splitter;
One end of multiple probe to be measured is connected to the signal output part of described power splitter, the other end of multiple described probe to be measured is connected on oscillographic passage by breakout box;
Time delay verification is carried out to described oscillographic multiple passage simultaneously.
5. oscillograph method of calibration according to claim 4, is characterized in that: the signal that described input signal is divided into multichannel identical by described power splitter exports.
6. oscillograph method of calibration according to claim 4, is characterized in that: the input end of described power splitter is connected with described input signal by microwave high-frequency connecting line.
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| CN201410821990.5A CN104459595A (en) | 2014-12-22 | 2014-12-22 | Oscilloscope checking system and method |
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| CN201410821990.5A CN104459595A (en) | 2014-12-22 | 2014-12-22 | Oscilloscope checking system and method |
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Cited By (7)
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| CN105721076A (en) * | 2016-01-20 | 2016-06-29 | 电子科技大学 | Time delay calibrating device facing coherent vector signal generating system and time delay calibrating method |
| CN105759197A (en) * | 2016-03-28 | 2016-07-13 | 工业和信息化部电子第五研究所 | System and method for acquiring DDS device single event effect abnormal waveforms |
| CN108254608A (en) * | 2016-12-29 | 2018-07-06 | 北京普源精电科技有限公司 | The method for self-calibrating of digital oscilloscope and digital oscilloscope |
| CN108732397A (en) * | 2018-05-25 | 2018-11-02 | 郑州云海信息技术有限公司 | A kind of oscilloprobe deskew jigs and its design method |
| CN110736953A (en) * | 2019-12-20 | 2020-01-31 | 深圳市鼎阳科技股份有限公司 | digital oscilloscope checking device |
| CN111273209A (en) * | 2020-03-16 | 2020-06-12 | 电子科技大学 | Channel consistency calibration method of dual-channel instrument |
| WO2023193450A1 (en) * | 2022-04-08 | 2023-10-12 | 普源精电科技股份有限公司 | Time delay calibration apparatus, oscilloscope, time delay calibration system, and time delay calibration method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105721076A (en) * | 2016-01-20 | 2016-06-29 | 电子科技大学 | Time delay calibrating device facing coherent vector signal generating system and time delay calibrating method |
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| CN108732397A (en) * | 2018-05-25 | 2018-11-02 | 郑州云海信息技术有限公司 | A kind of oscilloprobe deskew jigs and its design method |
| CN110736953A (en) * | 2019-12-20 | 2020-01-31 | 深圳市鼎阳科技股份有限公司 | digital oscilloscope checking device |
| CN111273209A (en) * | 2020-03-16 | 2020-06-12 | 电子科技大学 | Channel consistency calibration method of dual-channel instrument |
| WO2023193450A1 (en) * | 2022-04-08 | 2023-10-12 | 普源精电科技股份有限公司 | Time delay calibration apparatus, oscilloscope, time delay calibration system, and time delay calibration method |
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Application publication date: 20150325 |