CN205656293U - Oscilloprobe calibrating device - Google Patents
Oscilloprobe calibrating device Download PDFInfo
- Publication number
- CN205656293U CN205656293U CN201620443793.9U CN201620443793U CN205656293U CN 205656293 U CN205656293 U CN 205656293U CN 201620443793 U CN201620443793 U CN 201620443793U CN 205656293 U CN205656293 U CN 205656293U
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- China
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- oscilloprobe
- input
- signal generator
- utility
- voltage source
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- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses an oscilloprobe calibrating device, including direct current standard voltage source (1), digital multimeter (2), fixed ampllitude signal source (3), the fast signal generator (4) that follows, high resistance measurement appearance (5), high frequency impedance bridge (6), direct current standard voltage source links to each other with the oscilloprobe input, digital multimeter links to each other with oscilloprobe's output, the fixed ampllitude signal source, the fast signal generator that follows is connected with oscilloscope through the connecting wire respectively, high resistance measurement appearance and oscilloprobe are connected and measure oscilloprobe's input impedance in order being used for, high frequency impedance bridge and oscilloprobe are connected and measure oscilloprobe's input capacitive reactance in order being used for. The utility model discloses a detect oscilloprobe each mainly measure mission profile, and then calibration oscilloprobe can gain better effect in working using real -time monitoring, has certain commonality, the calibration accuracy is higher, can adopt in measurement system widely.
Description
Technical field
This utility model belongs to the technical field of metering, is specifically related to a kind of oscilloprobe calibrating installation.
Background technology
Oscillograph is the metrology and measurement instrument that we are commonly used, in daily test job, often with probe
Support the use, measure the multiple signal of telecommunication, be applied to the test of direct current, industrial frequency AC and high-frequency signal.These
Probe, as oscillograph, also exists error, if accurately to measure the parameter of signal, and not only will be to oscillography
The metering performance of device detects, and to detect the metering performance of probe.Oscilloprobe is
Connecting the electronic unit of circuit-under-test and oscillograph input, simplest oscilloprobe can be one leads
Line, complicated probe is made up of Resistor-Capacitor Unit and active device.Simple probe does not take shielding measure very
It is easily subject to the interference of external electromagnetic field, and equivalent capacity own is relatively big, causes the load of circuit-under-test to increase
Adding, make measured signal distortion, before use oscilloprobe being calibrated so being accomplished by us.
Above-mentioned discussion content purpose is may be with this reality being described below and/or advocate to reader's introduction
By the various aspects of the technology that novel various aspects are correlated with, it is believed that this discussion content contributes to providing for reader
Background information, to be conducive to being more fully understood that various aspects of the present utility model, it is therefore to be understood that be with this
Individual angle is read these and is discussed rather than recognize prior art.
Utility model content
The purpose of this utility model is to avoid deficiency of the prior art to provide a kind of oscilloprobe school
Standard apparatus, it can carry out calibration faster to oscilloprobe, and calibration accuracy is higher.
The purpose of this utility model is achieved through the following technical solutions:
There is provided a kind of oscilloprobe calibrating installation, including DC standard voltage source, digital multimeter, fixed ampllitude
Signal source, fast along signal generator, high resistance measuring instrument, high-frequency resistance electric bridge, described direct current normal voltage
Source is connected with oscilloprobe input, and described digital multimeter is connected with the outfan of oscilloprobe, institute
Stating fixed ampllitude signal source, be connected with oscillograph by connecting line respectively along signal generator soon, described high resistance is surveyed
Amount instrument is connected with oscilloprobe and measures for the input impedance of oscilloprobe, the resistance of described high frequency
Anti-electric bridge is connected with oscilloprobe and measures for the input capacitive reactance of oscilloprobe.
Wherein, described connecting line is made up of ground wire and holding wire.
Wherein, described connecting line periphery is provided with metallic shield net.
The oscilloprobe calibrating installation that this utility model provides, including DC standard voltage source, digital versatile
Watch, fixed ampllitude signal source, fast along signal generator, high resistance measuring instrument, high-frequency resistance electric bridge, described direct current
Standard voltage source is connected with oscilloprobe input, described digital multimeter and the outfan of oscilloprobe
Being connected, described fixed ampllitude signal source, the fast connecting line that passes through respectively along signal generator are connected with oscillograph, described
High resistance measuring instrument is connected with oscilloprobe and measures for the input impedance of oscilloprobe, institute
State high-frequency resistance electric bridge to be connected with oscilloprobe and measure for the input capacitive reactance of oscilloprobe.
By detecting each main measurement technology parameter of oscilloprobe, and then calibrated oscilloscope probe, in application
Can obtain preferable effect in actually detected work, have certain versatility, calibration accuracy is higher, can
To use in metering system widely.
Accompanying drawing explanation
The utility model is described in further detail to utilize accompanying drawing, but the embodiment in accompanying drawing is not constituted this practicality
Novel any restriction, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to the following drawings.
Fig. 1 is the structured flowchart of oscilloprobe calibrating installation.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the technical solution of the utility model, below in conjunction with attached
This utility model is described in further detail, it should be noted that do not conflicting by figure and specific embodiment
In the case of, the feature in embodiments herein and embodiment can be mutually combined.
Core of the present utility model is to provide a kind of oscilloprobe calibrating installation, and oscillograph can be visited by it
Head carries out calibration faster, and calibration accuracy is higher.
As it is shown in figure 1, oscilloprobe calibrating installation described in the utility model, including direct current normal voltage
Source 1, digital multimeter 2, fixed ampllitude signal source 3, soon along signal generator 4, high resistance measuring instrument 5, high
Frequently impedance bridge 6, described DC standard voltage source 1 is connected with oscilloprobe input, and described numeral is many
It is connected with the outfan of oscilloprobe with table 2, described fixed ampllitude signal source 3, fast along signal generator 4 points
Tong Guo not be connected with oscillograph by connecting line, described connecting line is made up of ground wire and holding wire, and connecting line periphery sets
It is equipped with metallic shield net.Described high resistance measuring instrument 5 is connected for oscilloprobe with oscilloprobe
Input impedance measure, described high-frequency resistance electric bridge 6 is connected for oscillograph with oscilloprobe
The input capacitive reactance of probe measures.
It is as follows that the oscilloprobe calibrating installation that this utility model provides carries out oscilloprobe calibration steps:
S1, the calibration of dc-decay multiplying power: DC standard voltage source 1 is connected with oscilloprobe input,
Digital multimeter 2 received by the outfan of oscilloprobe, and the input impedance of digital multimeter 2 is adjusted to 1M
Ω, chooses a predeterminated voltage point output signal, reads DC standard voltage source and digital multimeter respectively
Reading, calculates the dc-decay multiplying power of probe；
S2, the calibration of dc-decay coefficient: when the measurement voltage of probe is within 1000V, can be with 100V
For interval, the rate of change of the dc-decay multiplying power under the different voltage of measurement, unit is %/100V；When probe
When measuring voltage more than 1000V, the dc-decay times under different voltage can be measured with 1000V for interval
The rate of change of rate, unit is %/1kV, chooses the maximum dc-decay system as probe in the measurement results
Number；
S3, the calibration of bandwidth: fixed ampllitude signal source 3 and oscillograph are pressed in national metrological verification regulations and examine
The method determining oscillograph frequency response is attached by connecting line, and then the bandwidth of calibration probe, and fixed ampllitude is believed
The joint in number source and oscillographic highest frequency are all much larger than the nominal band width of tested probe；
S4, the calibration of rise time: national metrological verification regulations will be pressed along signal generator 4 and oscillograph soon
The method of middle calibrating rise time of oscilloscope is attached by connecting line, and then when calibrating the rising of probe
Between, the nominal rise time of tested probe it is much smaller than soon along signal generator and oscillographic rise time；
S5, input impedance and the calibration of input capacitive reactance: the input impedance of probe is entered with high resistance measuring instrument 5
Row is measured, and measures the input capacitive reactance of probe with high-frequency resistance electric bridge 6, whether determines the parameter of probe
Meet the requirements.
Above description elaborates a lot of detail so that fully understanding this utility model, but, this
Utility model can be implemented to use other to be different from other modes described here, it is thus impossible to understand
For the restriction to this utility model protection domain.
In a word, although this utility model lists above-mentioned preferred implementation, but it should be mentioned that, although this
The technical staff in field can carry out various change and remodeling, unless such change and remodeling deviate from this reality
By novel scope, otherwise should be construed as being included in protection domain of the present utility model.
Claims (3)
1. an oscilloprobe calibrating installation, it is characterised in that include DC standard voltage source (1),
Digital multimeter (2), fixed ampllitude signal source (3), soon along signal generator (4), high resistance measuring instrument (5),
High-frequency resistance electric bridge (6), described DC standard voltage source (1) is connected with oscilloprobe input, institute
State digital multimeter (2) to be connected with the outfan of oscilloprobe, described fixed ampllitude signal source (3), fast edge
Signal generator (4) is connected with oscillograph by connecting line respectively, described high resistance measuring instrument (5) with show
Ripple device probe connects and measures for the input impedance of oscilloprobe, described high-frequency resistance electric bridge
(6) it is connected with oscilloprobe and measures for the input capacitive reactance of oscilloprobe.
Oscilloprobe calibrating installation the most according to claim 1, it is characterised in that: described connection
Line is made up of ground wire and holding wire.
Oscilloprobe calibrating installation the most according to claim 1 and 2, it is characterised in that: described
Connecting line periphery is provided with metallic shield net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620443793.9U CN205656293U (en) | 2016-05-13 | 2016-05-13 | Oscilloprobe calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620443793.9U CN205656293U (en) | 2016-05-13 | 2016-05-13 | Oscilloprobe calibrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205656293U true CN205656293U (en) | 2016-10-19 |
Family
ID=57403791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620443793.9U Expired - Fee Related CN205656293U (en) | 2016-05-13 | 2016-05-13 | Oscilloprobe calibrating device |
Country Status (1)
| Country | Link |
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| CN (1) | CN205656293U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108957081A (en) * | 2017-05-18 | 2018-12-07 | 罗德施瓦兹两合股份有限公司 | Oscillograph tests and measures system and method |
| CN113126014A (en) * | 2021-04-14 | 2021-07-16 | 中国工程物理研究院计量测试中心 | Calibration system for realizing array parallelism of digital oscilloscope |
| 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 |
-
2016
- 2016-05-13 CN CN201620443793.9U patent/CN205656293U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108957081A (en) * | 2017-05-18 | 2018-12-07 | 罗德施瓦兹两合股份有限公司 | Oscillograph tests and measures system and method |
| CN113126014A (en) * | 2021-04-14 | 2021-07-16 | 中国工程物理研究院计量测试中心 | Calibration system for realizing array parallelism of digital oscilloscope |
| CN113126014B (en) * | 2021-04-14 | 2024-04-02 | 中国工程物理研究院计量测试中心 | Calibration system for realizing array parallelism of digital oscilloscope |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161019 Termination date: 20170513 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |