CN106990376A - A kind of test device and method of testing of scramble testing system line loss - Google Patents
A kind of test device and method of testing of scramble testing system line loss Download PDFInfo
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- CN106990376A CN106990376A CN201710212945.3A CN201710212945A CN106990376A CN 106990376 A CN106990376 A CN 106990376A CN 201710212945 A CN201710212945 A CN 201710212945A CN 106990376 A CN106990376 A CN 106990376A
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- tester
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- preset frequency
- testing
- line loss
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
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- General Physics & Mathematics (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention discloses a kind of test device and method of testing of scramble testing system line loss.The method of testing includes：The corresponding preset frequency of line loss to be measured and bandwidth are obtained by host computer；Launch the measured signal of preset frequency with predetermined power by PC control signal generator；The measured signal of preset frequency is transmitted to the first tester through trapper by power splitter；Mean power of the measured signal received in bandwidth is tested by the first tester；Predetermined power being obtained from signal generator by host computer, being obtained from the first tester after average power content, the difference for obtaining predetermined power and mean power is used as preset frequency and the corresponding line loss of bandwidth.By the above-mentioned means, the present invention can test out the line loss of the scramble testing system of different frequency range automatically in a relatively simple manner, so as to improve the operating efficiency of scramble testing system.
Description
Technical field
The present invention relates to radio frequency testing field, the test device of more particularly to a kind of scramble testing system line loss and test
Method.
Background technology
Spuious test is an important test index in radio frequency testing, in spuious test, for the survey of different frequency range
Case is tried, the line loss of scramble testing system is different.In order to ensure the accuracy of test result, often test a case, it is necessary to
The line loss of manual test scramble testing system simultaneously compensates to correct scramble testing system to it.But, due to spuious test
System is during use, and test frequency range obtains test cases a lot, so that the workload for causing line loss to be tested is very big, it is necessary to account for
The substantial amounts of time is used, and then reduces the operating efficiency of scramble testing system.
The content of the invention
The present invention solves the technical problem of the test device for providing a kind of scramble testing system line loss and test side
Method, the line loss of the scramble testing system of different frequency range can be tested out automatically in a relatively simple manner.
In order to solve the above technical problems, one aspect of the present invention is：A kind of scramble testing system line is provided
The test device of damage, the test device includes host computer, the first tester, power splitter, the second tester, trapper and signal hair
Raw device；Wherein, host computer is connected with the first tester, the second tester, signal generator respectively；Wherein, signal generator
The input connection of output end and power splitter；Wherein, the first output end of power splitter passes through the defeated of trapper and the first tester
Enter end connection；Wherein, the second output end of power splitter is connected with the input of the second tester.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of scramble testing system is provided
The method of testing of line loss, this method includes：The corresponding preset frequency of line loss to be measured and bandwidth are obtained by host computer；By upper
Machine control signal generator launches the measured signal of preset frequency with predetermined power；By power splitter by the measured signal of preset frequency
Transmitted through trapper to the first tester；Average work(of the measured signal received in bandwidth is tested by the first tester
Rate；Predetermined power obtained from signal generator by host computer, obtained from the first tester after average power content, obtain predetermined power
Preset frequency and the corresponding line loss of bandwidth are used as with the difference of mean power.
The beneficial effects of the invention are as follows：The test device and method of testing of the scramble testing system line loss of the present invention are by upper
Machine obtains the corresponding preset frequency of line loss to be measured and bandwidth；It is pre- with predetermined power transmitting by PC control signal generator
Determine the measured signal of frequency；The measured signal of preset frequency is transmitted to the first tester through trapper by power splitter；By first
Mean power of the measured signal that tester test is received in bandwidth；By host computer predetermined work(is obtained from signal generator
Rate, obtain after average power content from the first tester, obtain the difference of predetermined power and mean power and be used as preset frequency and pre-
Determine the corresponding line loss of bandwidth.By the above-mentioned means, the present invention can test out the miscellaneous of different frequency range automatically in a relatively simple manner
The line loss of test system is dissipated, so as to improve the operating efficiency of scramble testing system.
Brief description of the drawings
Fig. 1 is the structural representation of the test device of the scramble testing system line loss of the embodiment of the present invention；
Fig. 2 is the flow chart of the method for testing of the scramble testing system line loss of first embodiment of the invention；
Fig. 3 is the flow chart of the method for testing of the scramble testing system line loss of second embodiment of the invention.
Embodiment
Some vocabulary have been used among specification and claims to censure the skill in specific component, art
Art personnel are, it is to be appreciated that manufacturer may call same component with different nouns.Present specification and claims
Not in the way of the difference of title is used as differentiation component, but it is used as the base of differentiation with the difference of component functionally
It is accurate.The present invention is described in detail with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of the test device of the scramble testing system line loss of the embodiment of the present invention.As shown in figure 1,
The test device includes：Host computer 11, the first tester 12, power splitter 13, the second tester 14, trapper 15 and signal occur
Device 16.
Host computer 11 is connected with the first tester 12, the second tester 14, signal generator 16 respectively.In the present embodiment
In, it is preferable that host computer 11 is that PC, the first tester 12 are that spectrum analyzer, the second tester 14 are comprehensive tester.It is excellent
Selection of land, PC is connected with spectrum analyzer, comprehensive tester and signal generator respectively by gpib bus, with total by GPIB
To spectrum analyzer, comprehensive tester and signal generator control instruction occurs for line to indicate that it carries out work according to predetermined way
Make and by gpib bus from the related information of spectrum analyzer, comprehensive tester and signal generator reading.
Power splitter 13 includes input, the first output end and the second output end.Wherein, the output end of signal generator 16 with
The input connection of power splitter 13, the first output end of power splitter 13 is connected by the tester 12 of trapper 15 and first, work(point
Second output end of device 13 is connected with the input of the second tester 14.
The signal generator 16 in test device is replaced by measurement equipment it will be understood to those skilled in the art that working as
Afterwards, the test device can form scramble testing system.The first output end and comprehensive tester that measurement equipment passes through power splitter
Carry out data communication, the second output end access spectrum analyzer of power splitter, for measuring the strong of spurious signal in measurement equipment
Degree.
Fig. 2 is the flow chart of the method for testing of the scramble testing system line loss of first embodiment of the invention, the side shown in Fig. 2
Method is based on the test system shown in Fig. 1.If it is noted that there is substantially the same result, method of the invention is not with Fig. 2
Shown flow order is limited.As shown in Fig. 2 this method comprises the following steps：
Step S101：The corresponding preset frequency of line loss to be measured and bandwidth are obtained by host computer.
In step S101, different preset frequencies and bandwidth correspond to the different test cases for carrying out spuious test
Example.
Step S102：Launch the measured signal of preset frequency with predetermined power by PC control signal generator.
In step s 102, the first control instruction is sent to by signal generator, first by gpib bus by host computer
Control instruction includes the parameters such as predetermined power, preset frequency, the waveform of measured signal, so that signal generator is according to the first control
Instruction issue measured signal.
Specifically, the measured signal of signal generator transmitting is normally carried out spuious test when institute for simulating measurement equipment
The spurious signal of generation.Wherein, measured signal is preferably the sine wave signal of specified narrow band power, and its predetermined power is preferably
0dBm, its frequency is the preset frequency that obtains in step S101.
Step S103：The measured signal of preset frequency is transmitted to the first tester through trapper by power splitter.
Step S104：Mean power of the measured signal received in bandwidth is tested by the first tester.
In step S104, the second control instruction is sent to by signal generator, second by gpib bus by host computer
Control instruction includes the parameters such as preset frequency, bandwidth, so that the first tester tests letter to be measured according to the second control instruction
Number mean power.
Specifically, the step of testing mean power of the measured signal received in bandwidth by the first tester has
Body is：The spectrum scan of bandwidth is carried out centered on preset frequency by the tester of PC control first, and then acquisition connects
The corresponding mean power of measured signal received.
In the present embodiment, when the first tester carries out test job, the second tester need not carry out test job.
Wherein, second tester is impedance and scramble testing system in order to ensure link by power splitter and signal generator connection
Impedance is consistent, so as to ensure the test accuracy of line loss.
Step S105：Predetermined power is obtained from signal generator, obtained from the first tester after mean power by host computer,
The difference for calculating predetermined power and mean power is used as the corresponding line loss of preset frequency.
In step S105, predetermined power is obtained from signal generator by gpib bus by host computer, and pass through
Gpib bus is obtained after mean power from the first tester, and obtained mean power and letter are tested to the first tester by host computer
The predetermined power that number generator is sent carries out phase reducing, that is, show that the frequency bandwidth is band centered on the preset frequency
The line loss of wide scramble testing system.
Fig. 3 is the flow chart of the method for testing of the scramble testing system line loss of second embodiment of the invention, the side shown in Fig. 3
Method is based on the Auto-Test System shown in Fig. 1.If it is noted that there is substantially the same result, method of the invention is not
It is limited with the flow order shown in Fig. 3.As shown in figure 3, this method comprises the following steps：
Step S201：The corresponding preset frequency of line loss to be measured and bandwidth are obtained from calibration file by host computer.
In step s 201, calibration file is formed according to following manner：On the setting interface of host computer, by
The preset frequency residing for the radiofrequency signal of the spuious test of progress is inputted under LabWindows development environments one by one and to make a reservation for frequency
The bandwidth of frequency is to form calibration file centered on rate.
Wherein, the frequency range corresponding to the different test cases of spuious test and the predetermined frequency residing for different radio frequency signal are carried out
Rate is corresponding with bandwidth.
Step S202：Launch the measured signal of preset frequency with predetermined power by PC control signal generator.
Step S203：The measured signal of preset frequency is transmitted to the first tester through trapper by power splitter.
Step S204：Mean power of the measured signal received in bandwidth is tested by the first tester.
Step S205：Predetermined power is obtained from signal generator, obtain average power content from the first tester by host computer
Afterwards, obtain predetermined power and the difference of mean power is used as preset frequency and the corresponding line loss of bandwidth.
In the present embodiment, step S202~step S205 and step 102~steps of S in first embodiment shown in Fig. 2
S105 is similar, for the sake of brief, will not be repeated here.
Step S206：Judge whether above-mentioned preset frequency and bandwidth are last group in calibration file by host computer
Testing data, if it is not, step S201 is performed, if so, performing step S207.
In step S206, calibration file includes the testing data of at least one set of preset frequency and bandwidth.Wherein, when
When calibration file includes multigroup testing data, the test of first group of testing data is completed first, second group of number to be measured is then completed
According to test, until complete last group of testing data test.
Step S207：As the line loss corresponding to host computer stores each preset frequency and bandwidth into calibration file.
In step S207, after host computer judges the test of last group of testing data of completion, store each by host computer
Line loss corresponding to preset frequency and bandwidth is into calibration file.
In actual applications, form spuious when the signal generator in the test device of the present invention is substituted by Devices to test
After test system, a test cases is often tested, the frequency range that host computer need to only obtain the test cases can be from calibration file
The corresponding line loss of scramble testing system is obtained, so as to save the workload of line loss test, and then scramble testing system is improved
Operating efficiency.
The beneficial effects of the invention are as follows：The test device and method of testing of the scramble testing system line loss of the present invention are by upper
Machine obtains the corresponding preset frequency of line loss to be measured and bandwidth；It is pre- with predetermined power transmitting by PC control signal generator
Determine the measured signal of frequency；The measured signal of preset frequency is transmitted to the first tester through trapper by power splitter；By first
Mean power of the measured signal that tester test is received in bandwidth；By host computer predetermined work(is obtained from signal generator
Rate, obtain after average power content from the first tester, obtain the difference of predetermined power and mean power and be used as preset frequency and pre-
Determine the corresponding line loss of bandwidth.By the above-mentioned means, the present invention can test out the miscellaneous of different frequency range automatically in a relatively simple manner
The line loss of test system is dissipated, so as to improve the operating efficiency of scramble testing system.
Embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize the present invention
Equivalent structure or equivalent flow conversion that specification and accompanying drawing content are made, or directly or indirectly it is used in other related technologies
Field, is included within the scope of the present invention.
Claims (10)
1. a kind of test device of scramble testing system line loss, it is characterised in that described device includes host computer, the first test
Instrument, power splitter, the second tester, trapper and signal generator；
Wherein, the host computer is connected with first tester, second tester, the signal generator respectively；
Wherein, the output end of the signal generator is connected with the input of the power splitter；
Wherein, the first output end of the power splitter is connected by the trapper with the input of first tester；
Wherein, the second output end of the power splitter is connected with the input of second tester.
2. test device according to claim 1, it is characterised in that the host computer is PC, first tester
It is comprehensive tester for spectrum analyzer, second tester.
3. test device according to claim 2, it is characterised in that the PC by gpib bus respectively with the frequency
Spectrometer, the comprehensive tester and signal generator connection.
4. a kind of method of testing of test device according to claim 1, it is characterised in that the method for testing includes：
The corresponding preset frequency of line loss to be measured and bandwidth are obtained by the host computer；
Signal generator launches the measured signal of the preset frequency with predetermined power as described in the PC control；
The measured signal of the preset frequency is transmitted to first tester through the trapper by the power splitter；
Mean power of the measured signal received in the bandwidth is tested by first tester；
The predetermined power is obtained from the signal generator, obtain described average from first tester by the host computer
After performance number, the difference for obtaining the predetermined power and the mean power is used as the preset frequency and the bandwidth pair
The line loss answered.
5. method of testing according to claim 4, it is characterised in that the measured signal is sine wave signal.
6. method of testing according to claim 5, it is characterised in that described to test what is received by first tester
The measured signal includes the step of the mean power of the bandwidth：
The first tester carries out the frequency spectrum of the bandwidth centered on the preset frequency as described in the PC control
Scanning, and then obtain the corresponding mean power of the measured signal received.
7. method of testing according to claim 4, it is characterised in that described that line loss correspondence to be measured is obtained by the host computer
Preset frequency and bandwidth the step of include：
The corresponding preset frequency of line loss to be measured and bandwidth are obtained from calibration file by the host computer；
Wherein, the calibration file is by the way that input carries out the radiofrequency signal of spuious test one by one under LabWindows development environments
The residing preset frequency and bandwidth of frequency is formed centered on the preset frequency.
8. method of testing according to claim 7, it is characterised in that the method for testing further comprises：
Judge whether the preset frequency and the bandwidth are last group in the calibration file by the host computer
Testing data；
If the preset frequency and the bandwidth are not last group of testing datas in the calibration file, continue executing with
The operation of the corresponding preset frequency of line loss to be measured and bandwidth is obtained from calibration file by the host computer.
9. method of testing according to claim 8, it is characterised in that if the preset frequency and the bandwidth are institutes
Last group of testing data in calibration file is stated, methods described further comprises：
As the line loss corresponding to the host computer stores each preset frequency and the bandwidth to the calibration text
In part.
10. method of testing according to claim 4, it is characterised in that the predetermined power is 0dBm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710212945.3A CN106990376A (en) | 2017-04-01 | 2017-04-01 | A kind of test device and method of testing of scramble testing system line loss |
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| CN201710212945.3A CN106990376A (en) | 2017-04-01 | 2017-04-01 | A kind of test device and method of testing of scramble testing system line loss |
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| CN107707316A (en) * | 2017-08-29 | 2018-02-16 | 努比亚技术有限公司 | A kind of line loss acquisition methods, equipment and computer-readable recording medium |
| CN107888232A (en) * | 2017-11-21 | 2018-04-06 | 广东欧珀移动通信有限公司 | Detect the method and test system, host computer, computer-readable recording medium of line loss |
| CN108242960A (en) * | 2017-12-29 | 2018-07-03 | 广东欧珀移动通信有限公司 | Channel line loss modification method, device, storage medium and computer equipment |
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| CN107707316A (en) * | 2017-08-29 | 2018-02-16 | 努比亚技术有限公司 | A kind of line loss acquisition methods, equipment and computer-readable recording medium |
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Application publication date: 20170728 |