CN106027170A - Digital miniature channel equipment automatic test device and system - Google Patents
Digital miniature channel equipment automatic test device and system Download PDFInfo
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- CN106027170A CN106027170A CN201610355422.XA CN201610355422A CN106027170A CN 106027170 A CN106027170 A CN 106027170A CN 201610355422 A CN201610355422 A CN 201610355422A CN 106027170 A CN106027170 A CN 106027170A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/15—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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Abstract
The invention discloses a channel equipment automatic test device and system. The device comprises an interface adapter and a channel equipment automatic tester with a universal tester interface. The channel equipment automatic tester comprises a master control board, a digital intermediate frequency board, an audio board, a radio frequency board, a directional coupling module, a display input module and a self-powered module. The system comprises a calibration subsystem, test, plan and edit subsystems, a quality management subsystem and the channel equipment automatic test device. Through adoption of the channel equipment automatic tester matching the interface adapter, a test can be carried out on test site through simple connection. Through adoption of a digital processing method, the analog devices are greatly reduced. The whole system is small in size and is convenient to carry.
Description
Technical field
The present invention relates to automatization testing technique field, particularly relate to a kind of digital miniaturization radio equipment certainly
Dynamic test device and test system.
Background technology
All there is radio equipment hydraulic performance decline and cause the phenomenon of system communication failure in a lot of naval vessels, it is therefore desirable to right
Radio equipment carries out radio performance test.
But, the performance detection carrying out radio equipment at present on naval vessels needs to use a lot of markets universal test
Instrument, the multiple instrument such as including high-power energy meter, signal source, audiofrequency spectrometer, Network Analyzer.These instrument
Table function is complete, in addition to having the function required for test radio equipment, also has other to set at test channel
Unwanted function time standby.These redundancy features so that these instrument volumes are big, Heavy Weight, outside being not easy to
Go out to carry.
Thus, need badly and design and develop a miniaturization, portable radio equipment ATE.
Summary of the invention
In view of this, the invention provides a kind of digital miniaturization radio equipment automatic testing equipment and test
System, uses radio equipment auto testing instrument mating interface adapter, is connected by simple in test site
Can test, use digital processing method so that analog device greatly reduces so that whole system body
Long-pending little, easy to carry.
In order to solve above-mentioned technical problem, the present invention is achieved in that
A kind of radio equipment automatic testing equipment, including interface adapter and employing general test instrument interface
Radio equipment auto testing instrument；Described radio equipment auto testing instrument includes: master control borad, digital intermediate frequency plate,
Audio board, rf board, directional couple module, display input module and self-powered module；Embedded master control
Plate connects audio board and rf board by digital intermediate frequency plate, and rf board connects directional couple module, and master control borad is also
Connect display input module；The audio port that audio board provides connects tested radio equipment by interface adapter
Audio port；The control mouth that master control borad provides connects the control mouth of tested radio equipment by interface adapter；Fixed
Thering is provided two antenna/loading interfaces and two radio frequency mouths to coupling module, two antenna/loading interfaces are used for connecting
Load or corresponding wave band antenna, two radio frequency mouths are respectively used to connect the radio frequency of the tested radio equipment of corresponding wave band
Mouthful；Described corresponding wave band includes shortwave and ultrashort wave；
Described directional couple module includes ultrashort wave bonder and shortwave bonder, and described rf board includes switch
Group and radio frequency processing passage；Radio frequency processing passage connects digital intermediate frequency plate, and connects ultrashort wave by switches set
Bonder and shortwave bonder；Described switches set is used for switching digital intermediate frequency plate, radio frequency processing passage with ultrashort
Ripple bonder and the connected relation of shortwave bonder；Shortwave bonder connects antenna/loading interfaces that shortwave is corresponding
With radio frequency mouth, ultrashort wave bonder connects antenna/loading interfaces corresponding to ultrashort wave and radio frequency mouth；Described ultrashort
Ripple bonder and shortwave bonder, for being coupled out by the signal from rf board, will set from tested channel
Standby radiofrequency signal is divided into two parts, a part to introduce rf board, and another part introduces antenna/loading interfaces；
Master control borad arranges tested radio equipment state by controlling mouth；According to from outside test script or root
The test script generated according to the input of display input module, produces test signal and is transferred to digital intermediate frequency plate,
Digital intermediate frequency buttress produces digital signal according to test signal and is converted to analogue signal, is sent to audio board or penetrates
Frequently plate carries out signal condition, and the signal after audio board is nursed one's health is exported to tested radio equipment by audio port,
The signal nursed one's health through rf board is exported to tested radio equipment by radio frequency mouth；After tested radio equipment processes
The output signal produced arrives digital intermediate frequency plate, or taking via directional couple module via audio board after regulating
After the regulation of sample and rf board arrive digital intermediate frequency plate, digital intermediate frequency plate complete signal analog-to-digital conversion,
Signal processing also carries out test index calculating, then result of calculation is transferred to master control borad, by master control borad control
Display input module shows；
Self-powered module is audio board, master control borad, digital intermediate frequency plate and rf board provide power supply.
Preferably, described digital intermediate frequency plate uses FPGA to realize, and fpga logic is divided into transmitter and surveys
Examination unit and receiver test unit；
Transmitter test cell, according to the test signal from master control borad, produces digital signal, passes through audio board
Send to tested radio equipment after being converted to audio signal；The radiofrequency signal of tested radio equipment transmitter output,
It is coupled out a part of signal by directional coupler and is transferred to rf board, rf board carry out low-pass filtering and do one
After secondary power adjusts, return the transmitting test processes unit of digital intermediate frequency plate；This transmitting test processes unit enters
One step uses the method for bandpass sampling, directly gathers the radiofrequency signal from rf board, converts thereof into numeral
Signal, and with digital method to conversion after signal carry out automatic growth control, quadrature frequency conversion, extraction filter
The process that ripple, demodulation calculate, completes the test of tested radio equipment transmitter；
Receiver test unit, according to the test signal from master control borad, uses digital method to generate two-way orthogonal
Digital signal, then after carrying out the process of digital interpolative filtering, digital quadrature up-conversion, digitaltoanalogconversion,
Through rf board conditioning power output extremely tested radio equipment；The audio frequency that the receiver of tested radio equipment produces
Signal returns the receiver test unit of digital intermediate frequency plate via audio board；This receiver test unit is by audio frequency
After signal digitized, carry out the calculating of test index further, complete radio equipment receiver test.
Preferably, transmitter test cell and the receiver test unit of described FPGA is performing testing process
Shi Gongyong computing module, described computing module include automatic growth control module, digital interpolative filtration module,
Filtering extraction module, demodulation computing module, quadrature frequency conversion module and numeral orthometric up-conversion module.
Preferably, the switches set in described rf board include the one 1 point 2 switch, the 2nd 1 point 2 switch,
3rd 1 point of 2 switch and the 4th 1 point of 2 switch；Radio frequency processing passage includes exporting treatment channel and input
Reason passage；
The coupled end of shortwave directional coupler connects the second end of the one 1 point of 2 switch, and isolation end connects the 3rd 1
Divide the second ends of 2 switches；The coupled end of ultrashort wave directional coupler connects the 3rd end of the one 1 point of 2 switch,
Isolation end connects the 3rd end of the 3rd 1 point of 2 switch；First end of the one 1 point of 2 switch connects the 2nd 1 point 2
First end of switch, the second end of the second end the 4th 1 point of 2 switch of connection of the 2nd 1 point of 2 switch, the 2nd 1
The 3rd of 2 switches are divided to terminate into input processing passage；The 1st of 4th 1 point of 2 switch terminates and processes into output
Passage；1st end of the 3rd 1 point of 2 switch is directly accessed digital intermediate frequency plate；Described output treatment channel includes
Automatic level controller ALC, 90dB/10dB programmable step attenuator being sequentially connected in series and bank of filters；ALC
Connecting digital intermediate frequency plate, bank of filters connects the first end of the 4th 1 point of 2 switch；Described input processing passage
Including 20dB attenuator and the 5th 1 point of 2 switch；The input of 20dB attenuator connects the 2nd 1 point 2 to be opened
The 3rd end closed, the outfan of 20dB attenuator connects the second end of the 5th 1 point of 2 switch；5th 1 point 2
The first of switch terminates into digital intermediate frequency plate；4th 1 point 2 switch the 3rd end and the 5th 1 point 2 switch
3rd end is drawn this rf board and is formed Insertion Loss isolation degree test dual-port；All 1 point of 2 switches accept in numeral
Frequently the control of plate；
When testing transmitting power, frequency accuracy and the modulation quality of radio equipment, if input signal is
Shortwave frequency band signals, then digital intermediate frequency buttress arranges 1 point of 2 switches set according to frequency range, by shortwave directional coupler
Coupled signal be input to 20dB attenuator and carry out signal attenuation, the signal after decay is opened through the 5th 1 point 2
Pass is input to digital intermediate frequency plate；If input signal is ultrashort wave frequency band signal, then digital intermediate frequency buttress is according to frequency
Section arranges 1 point of 2 switches set, the coupled signal of ultrashort wave directional coupler is input to 20dB attenuator and carries out
Signal attenuation, the signal after decay is input to digital intermediate frequency plate through the 5th 1 point of 2 switch；
When testing the standing-wave ratio of radio equipment, if input signal is shortwave frequency band signals, then digital intermediate frequency
Buttress arranges 1 point of 2 switches set according to frequency range, by direct with digital intermediate frequency plate for the isolation end of shortwave directional coupler
Connection；If input signal is ultrashort wave frequency band signal, then digital intermediate frequency buttress arranges 1 point 2 according to frequency range and opens
Pass group, directly connects the isolation end of ultrashort wave directional coupler with digital intermediate frequency plate；
When testing receiver sensitivity and the receiver dynamic range of radio equipment, the output of digital intermediate frequency plate
Signal enters ALC and carries out algorithm for power modulation, power is adjusted to the fixed value of 10dBm, then according to test
Need the scope utilizing 90dB/10dB programmable step attenuator to attenuate the signal to 10dBm～-80dBm；Decline
Signal after subtracting chooses corresponding shortwave by 1 point of 2 switches set after device group carries out signal filtering after filtering
Directional coupler or ultrashort wave directional coupler carry out coupling output, complete receiver sensitivity and receiver
Dynamic range is tested.
Preferably, described master control borad has prestored multiple independent test module, corresponding one of each test module
Test event, the corresponding visual icon of each test module；Master control borad has also prestored multiple control language
Sentence, the corresponding visual icon of each control statement；When manual test, master control borad receives test person
Member's selection to test event, and utilize the control statement and ordered execution sequence that tester chooses,
Test event carries out order perform, to realize the control of test event；When automatically testing, master control buttress
According to test script predetermined test event order, automatically perform；When performing each test event, to number
Word IF board sends test signal, and digital intermediate frequency buttress is real by calling shared computing module according to test signal
The execution of existing test event.
Present invention also offers a kind of radio equipment Auto-Test System, including: calibration subsystem, test rule
Draw editor subsystem, System of Quality Control, also include that any one radio equipment is tested automatically as previously mentioned
Device；Calibration subsystem, System of Quality Control and planning editor's subsystem connecting channel equipment are tested automatically
Radio equipment auto testing instrument in device；
Described radio equipment auto testing instrument carries out self calibration according to the self calibration file carrying out self calibration subsystem；
Receive the test script planned according to tested radio equipment type that test-schedule editor's subsystem is sent, logical
Cross testing results script the tested radio equipment of current type is tested；After completing test, by tested letter
The test result file of road equipment preserves to System of Quality Control, System of Quality Control complete test knot
The statistical analysis of fruit.
Preferably, when using described calibration subsystem to calibrate, the program control spectrum analysis of radio equipment auto testing instrument
The transmitter and receiver of himself is calibrated by instrument, simulation signal generator and energy meter:
During calibration frequency accuracy, transmitter and the spectrum analyzer of radio equipment auto testing instrument are in work
State, exports spectrum analyzer by the transmitting signal of radio equipment auto testing instrument；Adjust and launch signal frequency
Rate, the signal frequency making spectrum analyzer record is consistent with nominal frequency value, thus completes to use spectrum analyzer
The process of calibration radio equipment auto testing instrument frequency；
During calibration power accuracy, demarcate spectrum analyzer and the power of simulation signal generator first by energy meter,
Re-use simulation signal generator and the power of Spectrum Analyzer Calibration radio equipment auto testing instrument, specifically include as
Lower step:
(1) power of simulation signal generator is demarcated
Radio equipment auto testing instrument controls simulation signal generator so that simulation signal generator transmitting setting power value a1,
The signal of different frequency, the Frequency point launching signal is designated as fn, n=1,2 ..., N, N are positive integer；For frequency
Rate point fn, energy meter record the transmitting power data b1 of simulation signal generatorfn, the value recorded with energy meter is true
Real-valued, then Frequency point fnUnder, simulation signal generator output power error is d1fn=a1-b1fn；
(2) receiver power of radio equipment auto testing instrument is calibrated
The output frequency of the program control simulation signal generator of radio equipment auto testing instrument is fn, output is set to
c1+d1fn, c1 is expectation simulation signal generator real output, uses radio equipment auto testing instrument to measure mould
The power intending signal source is p1fn；Then Frequency point fnUnder, auto testing instrument receiver power error d2fn=p1fn-c1；
N is made to take all over 1～N, by d2 in the reception errors table in self calibration filefnWith Frequency point fnCorresponding storage；
(3) power of spectrum analyzer is demarcated
The output frequency of the program control simulation signal generator of radio equipment auto testing instrument is fn, output is set to
c1+d1fn, the power using spectrum analyzer measure analog signals source output signal is e1fn；Then Frequency point fn
Under, the power measurement error of spectrum analyzer is d3fn=e1fn-c1；N is made to take all over 1～N, it is thus achieved that each frequency
The spectrum analyzer power measurement error that point is corresponding；
(4) transmitter power of radio equipment auto testing instrument is calibrated
The transmitter output frequency of radio equipment auto testing instrument is fn, power be p3mSignal to spectrum analysis
Instrument, spectrum analyzer the power recording signal is designated as g(p3m-fn), then the real power of current demand signal is
p2(fn-m)=g(p3m-fn)-d3fn；Frequency values f will be setn, performance number p3 is setmWith corresponding actual value p2(fn-m)
Correspondence preserves；
Making n take all over 1～N, make m take all over 1～M, M is positive integer, then calibration obtain various signal frequency and
A transmitter power calibration two-dimensional data table under power condition.
Beneficial effect:
(1) present invention employs digital processing method, the wave filter of conventional instrument use, frequency mixer, frequency
The analog devices such as synthesizer greatly reduce, and effectively reduce the weight of test instrumentation, coordinate for radio equipment
The operation software tested and provide, makes radio equipment test become more efficient.
(2) radio equipment auto testing instrument mating interface adapter is used, in test site by simply connecting
Connect and can test, and too increase the versatility of radio equipment auto testing instrument.
(3) present invention employs many miniaturization measures: one is the meter being completed all signals by digital intermediate frequency plate
Calculate, use digital form to complete more signal processing, decrease the analog device taking volume, sound
Frequently plate and rf board no longer carry out signal calculating, it is achieved that audio board and the miniaturization of rf board；Two is master control
Plate uses embedded main control board, decreases the volume of the devices such as general master control borad CPU, internal memory, master control simultaneously
Plate is the carrier of running software, is also the interface of display screen and external control
(4) present invention devises antenna/loading interfaces in directional couple part, and tested radio equipment passes through radio frequency
The radiofrequency signal sent of mouth is divided into two parts, and a portion introduces rf board, and another part is by antenna/negative
Carry interface and lead to load or corresponding wave band antenna, and dissipate, be so possible to prevent too much energy to enter
Rf board, causes the device damage of rf board, it is to avoid uses built-in attenuator, reduces volume, alleviates
Weight, also makes the state consistency when state of tested radio equipment and normal work during test.
(5) radio equipment auto testing instruments can realize the test that radio equipment is launched and received, and
Going for ultrashort wave and two kinds of equipment of shortwave, the scope of application is extended.The preferred embodiment of the present invention
Switches set that one of feature that short-wave signal and ultrashort wave signals process is through achieve shortwave and ultrashort
Ripple signal shares an attenuator；The present invention to the two of the feature that short-wave signal and ultrashort wave signals process is exactly
Achieve shortwave by switches set and ultrashort wave signals shares an ALC and programmable attenuator.
(6) present invention adds rechargeable battery in a device, can guarantee that the equipment of the present invention at field testing not
It is limited by power supply again to provide, adds the portability of field testing.
Accompanying drawing explanation
Fig. 1 is the composition frame chart of the present invention digital miniaturization radio equipment Auto-Test System；
Fig. 2 is the composition frame chart of the present invention digital miniaturization radio equipment automatic testing equipment；
Fig. 3 is the connection figure of radio equipment auto testing instrument, tested radio equipment, interface adapter three；
Fig. 4 is the composition frame chart of directional couple module and rf board；
Fig. 5 is the composition frame chart of rf board in present pre-ferred embodiments；
Fig. 6 is the functional module composition of software；
Fig. 7 is the self-calibration process of auto testing instrument；The frequency calibration of (a) auto testing instrument；(b) analogue signal
Source calibration；C () auto testing instrument receiver power is calibrated；(d) Spectrum Analyzer Calibration；E () auto testing instrument is sent out
Penetrate acc power calibration.
Detailed description of the invention
Develop simultaneously embodiment below in conjunction with the accompanying drawings, describes the present invention.
The invention provides a kind of digital miniaturization radio equipment automatic testing equipment and system.Fig. 1 is for being
System composition frame chart, as it is shown in figure 1, it includes radio equipment automatic testing equipment, calibration subsystem, test
Planning editor's subsystem and System of Quality Control.Radio equipment automatic testing equipment includes that radio equipment is automatic
Tester and interface adapter.Wherein, calibration subsystem, System of Quality Control, planning editor's subsystem
It is all connected with radio equipment auto testing instrument with interface adapter.
Radio equipment auto testing instrument: for all kinds of tested radio equipments are tested automatically.It is according to coming
The self calibration file of self calibration subsystem carries out self calibration, calibration file is directed into radio equipment certainly after calibration
Dynamic tester.This radio equipment auto testing instrument receive test-schedule editor's subsystem send according to tested letter
The test script that road device type is planned, by the automatic testing results script tested channel to current type
Testing equipment；After completing test, the test result file of tested radio equipment is preserved to quality management
Subsystem, is completed the statistical analysis of test result by System of Quality Control.
Interface adapter: radio equipment auto testing instrument uses general test instrument interface, sets with tested channel
Standby interface connects inconvenience.Interface adapter makes radio equipment auto testing instrument and the company of tested radio equipment
Connect and become convenient, and make radio equipment auto testing instrument more have compatibility.
Calibration subsystem: use spectrum analyzer, simulation signal generator and energy meter during calibration, it is achieved to channel
The frequency accuracy of the transmitter and receiver of equipment auto testing instrument, the calibration of power accuracy.
Test-schedule editor's subsystem: owing to tested radio equipment is of a great variety, method of testing is had nothing in common with each other,
Therefore, the present invention uses the test-schedule of test-schedule all kinds of tested radio equipment of editor subsystem editor to perform
Script, is finally downloaded to radio equipment auto testing instrument, it complete the execution of script.
System of Quality Control: after radio equipment auto testing instrument completes test, by each tested radio equipment
Test result file preserve to System of Quality Control, its complete the statistical analysis of test result, and can
Browse the test result of each test radio equipment.
Above-mentioned test-schedule editor's subsystem and System of Quality Control can rely on the software of computer and put down
Platform, utilizes Computerized Editing test-schedule file and management, analysis test result.
It it is exactly more than the function of each ingredient of native system.Describe radio equipment first below in detail automatically to test
Implementing of instrument and interface adapter.
As in figure 2 it is shown, the radio equipment auto testing instrument in radio equipment automatic testing equipment specifically includes:
Master control borad, digital intermediate frequency plate, audio board, rf board, directional couple module, display input module and confession
Electricity module.The annexation of each module is: master control borad connects audio board and rf board by digital intermediate frequency plate,
Rf board connects directional couple module, and master control borad is also connected with showing input module.Audio board provides one group of audio frequency
Mouth (such as Fig. 3, an input audio port, an output audio port) is as this radio equipment auto testing instrument
Audio port, this audio port connects the audio port of tested radio equipment by interface adapter.Master control borad provides control
Donsole is as the control mouth of this radio equipment auto testing instrument, and this control mouth connects tested by interface adapter
The control mouth of radio equipment.Directional couple module two antenna/loading interfaces of offer and two radio frequency mouths, two
Antenna/loading interfaces is used for connecting load or corresponding wave band antenna, and two radio frequency mouths are respectively used to connect corresponding ripple
The radio frequency mouth of the tested radio equipment of section.
Corresponding wave band described herein includes shortwave and ultrashort wave.Shortwave is different with ultrashort wave frequency, traditional letter
Road equipment typically designs according to shortwave and two frequency ranges of ultrashort wave.For radio equipment tester, will
Two frequency ranges separately, make some waste resource of two testers.The present invention is in order to be applicable to shortwave and ultrashort
Ripple frequency range, digitally realizes major part and processes, then for shortwave frequency range and ultrashort wave frequency band, test
Instrument signal processing is identical, and the difference of two frequency ranges is only at the coupling of radiofrequency signal.Have at present
Ripe shortwave bonder and ultrashort wave bonder, by two kinds of bonders by single-pole double-throw switch (SPDT) and digital signal
Process part to connect, it is possible to achieve timesharing, to shortwave frequency range, the support of ultrashort wave frequency band, reduces bonder
The requirement of bandwidth.
Therefore, as shown in Figure 4, directional couple module includes ultrashort wave bonder and shortwave bonder, radio frequency
Plate includes switches set and radio frequency processing passage.Radio frequency processing passage connects digital intermediate frequency plate, and radio frequency processing is led to
Road connects ultrashort wave bonder and shortwave bonder by switches set；This switches set be used for switching digital intermediate frequency plate,
Radio frequency processing passage and ultrashort wave bonder and the connected relation of shortwave bonder.Shortwave bonder connects shortwave
Corresponding antenna/loading interfaces and radio frequency mouth, ultrashort wave bonder connects antenna/loading interfaces that ultrashort wave is corresponding
With radio frequency mouth；The radio frequency mouth of this directional couple module connects tested radio equipment as previously mentioned, and antenna/load connects
Mouth connects load or corresponding wave band antenna.Ultrashort wave bonder and shortwave bonder are by the signal from rf board
It is coupled out by radio frequency mouth, the radiofrequency signal that tested radio equipment is sent by radio frequency mouth is divided into two parts,
A portion introduces rf board, and another part leads to load or corresponding wave band sky by antenna/loading interfaces
Line, and dissipate, so it is possible to prevent too much energy to enter rf board, causes the device damage of rf board.
The working method of this tester is: master control borad arranges the (transmitting of tested radio equipment state by controlling mouth
Machine work or operation of receiver), according to from outside test script or according to the input institute showing input module
The test script generated produces test signal and is transferred to digital intermediate frequency plate, and digital intermediate frequency buttress produces according to test signal
Raw digital signal is also converted to analogue signal, is sent to audio board or rf board carries out signal condition, if
Test transmitter is then sent to audio board, if test receiver is then sent to rf board；Adjust through audio board
Signal after reason is exported to tested radio equipment by audio port, and the signal nursed one's health through rf board passes through radio frequency mouth
Export to tested radio equipment；The output signal produced after tested radio equipment processes regulates via audio board
Rear arrival digital intermediate frequency plate, or arrive in numeral via after the sampling of directional couple module and the regulation of rf board
Frequently plate, digital intermediate frequency plate completes the analog-to-digital conversion of signal, signal processing and carries out test index calculating,
Then result of calculation is transferred to master control borad, master control borad controls display input module and show.Wherein,
Completed the calculating of all signals, audio board and rf board by digital intermediate frequency plate and no longer carry out signal calculating, it is achieved
The miniaturization of audio board and rf board.
Self-powered module is audio board, master control borad, digital intermediate frequency plate and rf board provide power supply.The present embodiment
In, self-powered module includes rechargeable battery, Power Management Unit and DC-DC converting unit；Power management mould
Block connects external power source input, rechargeable battery and DC-DC modular converter；Power management module is by external power source
It is incorporated into inside tester, can be rechargeable battery charging.When equipment self-powered, rechargeable battery output electricity
Power, to DC-DC modular converter, is changed by DC-DC modular converter, and DC-DC modular converter power supply is defeated
Go out to hold the electricity consumption module on connecting channel equipment auto testing instrument, thus be on radio equipment auto testing instrument
Electricity consumption module for power supply.When power management module connects external power source, power management module is defeated by external power
Go out to DC-DC modular converter and change, it is achieved externally fed.
It can be seen that one of feature of the present invention is by numeral from the composition of module above and flow process describe
Frequently plate completes the calculating of all signals, audio board and rf board and no longer carries out signal calculating, it is achieved that audio board
Miniaturization with rf board.Concrete, digital intermediate frequency plate can be realized by FPGA, is drawn by fpga logic
It is divided into transmitter test cell and receiver test unit；Its test mode is as follows:
1) when radio equipment transmitting signal being tested
Transmitter test cell in FPGA, according to the test signal from master control borad, produces digital signal, logical
Cross after audio board is converted to audio signal and send to tested radio equipment；The output of tested radio equipment transmitter
Radiofrequency signal, is coupled out a part of signal by directional coupler and is transferred to rf board, rf board carry out low pass
After filtering and do a power adjustment, return the transmitting test processes unit of digital intermediate frequency plate；This transmitting is tested
Processing unit uses the method for bandpass sampling further, directly gathers the radiofrequency signal from rf board, by it
It is converted into digital signal, and with digital method, the signal after conversion is carried out automatic growth control, orthogonal lower change
Frequently, filtering extraction, demodulation calculate process, complete tested radio equipment transmitter test.
2) when radio equipment receiver being tested
Receiver test unit in FPGA, according to the test signal from master control borad, uses digital method to generate
The digital signal that two-way is orthogonal, then carry out digital interpolative filtering, digital quadrature up-conversion, digitaltoanalogconversion
Process after, through rf board conditioning power and export extremely tested radio equipment；The receiver of tested radio equipment
The audio signal produced returns the receiver test unit of digital intermediate frequency plate via audio board；This receiver test
Unit, by after audio signal digitizing, carries out the calculating of test index further, completes radio equipment receiver
Test.
The two of the feature of the present invention are the design of directional couple module and rf board, this directional couple module energy
Enough adapt to the radio equipment of two kinds of wave bands.Rf board realizes two kinds of bonders by the appropriate design of switches set
Rationally switch use, and device used is fewer so that instrument volume is the least.
Rf board preferred implementation as shown in Figure 5.Switches set in this rf board includes the one 1 point 2
Switch, the 2nd 1 point of 2 switch, the 3rd 1 point of 2 switch and the 4th 1 point of 2 switch；Radio frequency processing passage bag
Include output treatment channel and input processing passage.
The coupled end of shortwave directional coupler connects the second end of the one 1 point of 2 switch, and isolation end connects the 3rd 1
Divide the second ends of 2 switches；The coupled end of ultrashort wave directional coupler connects the 3rd end of the one 1 point of 2 switch,
Isolation end connects the 3rd end of the 3rd 1 point of 2 switch；First end of the one 1 point of 2 switch connects the 2nd 1 point 2
First end of switch, the second end of the second end the 4th 1 point of 2 switch of connection of the 2nd 1 point of 2 switch, the 2nd 1
The 3rd of 2 switches are divided to terminate the input into input processing passage；1st end of the 4th 1 point of 2 switch connects
The outfan of output treatment channel；1st end of the 3rd 1 point of 2 switch is directly accessed digital intermediate frequency plate.Described
Output treatment channel includes automatic level controller (ALC), the 90dB/10dB program control stepping decay being sequentially connected in series
Device and bank of filters；ALC connects digital intermediate frequency plate, and bank of filters connects the first end of the 4th 1 point of 2 switch.
Described input processing passage includes 20dB attenuator and the 5th 1 point of 2 switch；The input of 20dB attenuator
Connecting the 3rd end of the 2nd 1 point of 2 switch, the outfan of 20dB attenuator connects the of the 5th 1 point of 2 switch
Two ends.The first of 5th 1 point of 2 switch terminates into digital intermediate frequency plate.4th 1 point 2 switch the 3rd end and
3rd end of the 5th 1 point of 2 switch is drawn this rf board and is formed Insertion Loss isolation degree test dual-port.All 1 point 2
Switch accepts the control of digital intermediate frequency plate.
The work process of this rf board is:
When testing transmitting power, frequency accuracy and the modulation quality of radio equipment, if input signal is
Shortwave frequency band signals, then digital intermediate frequency buttress arranges 1 point of 2 switches set according to frequency range, by shortwave directional coupler
Coupled signal be input to 20dB attenuator and carry out signal attenuation, the signal after decay is opened through the 5th 1 point 2
Pass is input to digital intermediate frequency plate；If input signal is ultrashort wave frequency band signal, then digital intermediate frequency buttress is according to frequency
Section arranges 1 point of 2 switches set, the coupled signal of ultrashort wave directional coupler is input to 20dB attenuator and carries out
Signal attenuation, the signal after decay is input to digital intermediate frequency plate through the 5th 1 point of 2 switch；The present invention's is right
One of feature that short-wave signal and ultrashort wave signals process is through switches set and achieves shortwave and ultrashort wave letter
Number share an attenuator, the present invention selects 20dB attenuator to be the power bracket according to input signal, coupling
Power that device is coupled out and the sampled signal power that digital intermediate frequency plate needs are designed, and 20dB attenuator is
Meet the particular value of the demand.
When testing the standing-wave ratio of radio equipment, if input signal is shortwave frequency band signals, then digital intermediate frequency
Buttress arranges 1 point of 2 switches set according to frequency range, by direct with digital intermediate frequency plate for the isolation end of shortwave directional coupler
Connection；If input signal is ultrashort wave frequency band signal, then digital intermediate frequency buttress arranges 1 point 2 according to frequency range and opens
Pass group, directly connects the isolation end of ultrashort wave directional coupler with digital intermediate frequency plate.
When testing receiver sensitivity and the receiver dynamic range of radio equipment, the output of digital intermediate frequency plate
Signal enters ALC and carries out algorithm for power modulation, power is adjusted to the fixed value of 10dBm, then according to test
Need the scope utilizing 90dB/10dB programmable step attenuator to attenuate the signal to 10dBm～-80dBm；Decline
Signal after subtracting chooses corresponding shortwave by 1 point of 2 switches set after device group carries out signal filtering after filtering
Directional coupler or ultrashort wave directional coupler carry out coupling output, complete receiver sensitivity and receiver
Dynamic range is tested.Another feature processing short-wave signal and ultrashort wave signals of the present invention is through
Switches set achieves shortwave and ultrashort wave signals shares an ALC and programmable attenuator.
As it is shown in figure 5, this rf board provides Insertion Loss isolation degree test dual-port, the two interface is used for surveying
The insertion loss of examination multiple-path coupler and isolation.Multiple-path coupler is a measured device, and it is usually joined
Close what radio equipment used.The auto testing instrument of the present invention, while test radio equipment, also contains survey
The insertion loss of examination multiple-path coupler and the function of isolation.During test, auto testing instrument exports a certain power
The signal of intensity, this signal of re-test by the power after multiple-path coupler, compare output signal power and
The power recorded, it is possible to obtain insertion loss and the isolation of multiple-path coupler.
The auto testing instrument of the present invention has a function of following index:
1) audio-frequency index: include that audio signal level intensity, audio signal frequency accuracy, audio signal are lost
Calculating needed for true and tetra-project testings of audio signal SINAD, these four test events include digital collection,
Distortion computation received by Fourier transformation and letter.
2) radio-frequency transmissions index: include output, frequency accuracy, three test events of modulation quality,
Calculating needed for three test events includes automatic growth control, digital interpolative filtering, filtering extraction, orthogonal
Down coversion and demodulation calculate.
3) radio frequency reception index: include receiving sensitivity and receive two test events of dynamic range, two surveys
Calculating needed for examination project includes digitaltoanalogconversion, digital quadrature up conversion and digital modulation.
Visible, three class indexs have identical calculating demand.The present invention completes the mould of test event at master control borad
Massing, completes calling of test event at master control borad；In digital intermediate frequency plate, calculating is carried out modularity,
Digital intermediate frequency plate completes the concrete calculating of test event by calling computing module.It is to say, actually
Calculate what operation was mainly completed by digital intermediate frequency plate, thus make full use of the computing capability of digital intermediate frequency plate.
According to the test event completed required for above-mentioned, in this digital intermediate frequency plate the transmitter test cell of FPGA and
Receiver test unit needs when performing test event to share several computing modules, including automatic growth control
Module, digital interpolative filtration module, filtering extraction module, demodulation computing module, quadrature frequency conversion module and
Digital quadrature up-converter module (bottom line in Fig. 6).
The three of the core of the present invention are the tests that equipment can realize automatization, and the automatic test of the present invention is logical
Crossing the automatic testing software running on master control borad to perform, automatic testing software utilizes the most ripe visualization
Programming technique, it is provided that man machine operation interface.When using the present invention that radio equipment is tested, can use manually
Test and automatically two kinds of methods of test.
Manual test is artificial according to testing procedure, arranges radio equipment and radio equipment tester step by step
Parameter test.Automatically the implementation method of test is then in advance according to method of testing step, uses and calculates
Machine programming language, program control radio equipment and radio equipment tester, be automatically performed testing process.Automatically test
Script by test-schedule editor's subsystem provide, manual test then can be carried by tester by tester
The editing interface of confession completes.
The editing interface of manual test is run by the upper computer software on master control borad.In order to simplify tester's
Work, the upper computer software of the present invention has carried out modularity to test event as previously mentioned, each is tested
Project is as an independent module, and forms visualization icon (middle two rows in Fig. 6), can be by test person
Member carries out the interpolation of test event as required, revises and delete.And according to the execution needs of test event,
Add the control statements such as conditional judgment statement, Do statement, time delay, variable, array, message window,
The corresponding visualization icon of each control statement.Test event is connected by application personnel with these control statements
Get up, by the way of pulling, the icon of control statement can be increased in the edit box of setting, perform survey
During examination, these statements will run one by one, may be constructed a complete flow process, to realize the stream of test event
Process control.By this design, tester can edit the method for testing flow process that oneself needs flexibly.
For master control borad, when manual test, master control borad receives tester's selection to test event,
And utilize the tagged word and control event and ordered execution sequence that tester chooses, to test event
Carry out order to perform, to realize the control of test event；When automatically testing, master control borad is according to test script
Predetermined test event order, performs automatically.
Either manual or automatic, once have selected the execution sequence of test event, master control borad is performing often
During individual test event, sending test signal to digital intermediate frequency plate, digital intermediate frequency buttress passes through to adjust according to test signal
The concrete execution of each calculation procedure in test event is realized with shared computing module.Therefore, mainly calculate
Or completed by digital intermediate frequency plate.
Fig. 6 illustrates the functional module composition of software.Software is divided into audio-frequency index to include, and audio signal level is strong
Degree, audio signal frequency accuracy, audio signal distortion and tetra-project testings of audio signal SINAD, penetrate
Taking place frequently to penetrate and include output, frequency accuracy, three test events of modulation quality, radio frequency reception includes connecing
Receiving sensitivity and receive two test events of dynamic range, basis statement includes that For Do statement, If condition are sentenced
Conclusion sentence and variable.Before testing, according to actual testing requirement, some test event can be added
In test-schedule, it is also possible to basis statement is added certain test item currently as circulation, conditional judgment
Condition, after user clicks on operation, software is automatically performed test.
In the exploitation or maintenance of electronic communication equipment, the when of relating to signal magnitude and frequency, it is required for
There is a reference standard, in order to weigh the absolute size of output signal or to measure the size of signal.When signal frequency
When rate coverage is wider, due to the frequency selectivity of electronic devices and components various in electronic communication equipment, can lead
Cause equipment is when different frequency, and the performance relevant to signal power is inconsistent, such as output signal power or measurement
Signal power is inaccurate.Equally, in a certain frequency, the attenuator gear adjusting output signal size is impossible
As the most accurate.It is therefore desirable to the electronic communication equipment power when different frequency is calibrated.
The essence of calibration is the equipment demarcated with the equipment of higher precision and revise a certain precision.Use high measurement accuracy
Energy meter, signal source and audiofrequency spectrometer, electronic communication equipment can be calibrated to the standard similar to these instrument
Exactness.Calibration subsystem in the present invention, uses spectrum analyzer, simulation signal generator and energy meter, it is achieved
The frequency accuracy of the transmitter and receiver of radio equipment auto testing instrument, the calibration of power accuracy.
Owing to transmitter and receiver shares a reference source, by adjusting the frequency of internal reference source, launch
The frequency accuracy of machine and receiver will change simultaneously, and therefore transmitter and receiver only carries out one of them frequency
Rate accuracy is calibrated.The present embodiment selects the frequency accuracy of calibration transmitter.So, the present invention
Calibration thinking is that transmitter frequency and power are traced to the source to spectrum analyzer, and receiver power is traced to the source to simulation letter
Number source, ultimately generates self calibration file, is directed into radio equipment auto testing instrument.Specific practice is as follows.
1, the frequency accuracy calibration of radio equipment auto testing instrument
Frequency accuracy for radio equipment auto testing instrument is calibrated, and is to be adjusted to by its internal reference clock
Consistent with calibrated meter.In the case of clock accuracy is exigent, it is possible to use rubidium clock is calibrated,
Under normal conditions, can calibrate with frequency audiofrequency spectrometer accurately.
As shown in Fig. 7 (a), radio equipment auto testing instrument controls at transmitter and the spectrum analyzer of self
In duty, the transmitting signal of radio equipment auto testing instrument is exported spectrum analyzer；Adjust and launch
Signal frequency, the signal frequency making spectrum analyzer record is consistent with nominal frequency value, thus completes to use frequency spectrum
The process of analyser calibration radio equipment auto testing instrument frequency.
2, the calibration of power of radio equipment auto testing instrument
The power accuracy of power meter calibration electronic communication equipment can be used, but energy meter cannot accurately be tested
Small signal power, so, the present invention first demarcates spectrum analyzer and the power of signal source with energy meter, then makes
With signal source and the power of Spectrum Analyzer Calibration electronic communication equipment.Specifically:
The first step, demarcates the power of simulation signal generator
As shown in Fig. 7 (b), radio equipment auto testing instrument controls simulation signal generator so that simulation signal generator
Launching the signal of setting power value, the frequency setting of simulation signal generator output signal is a certain Frequency point f1；By
Energy meter records the transmitting power data of simulation signal generator, by the simulation signal generator merit of the data recorded and setting
Rate value compares, and difference is exactly between present frequency point Imitating signal source power measurement and energy meter tolerance
Difference；Assuming that simulation signal generator setpoint power output value is a1, the value that energy meter records is b1f1, with power
The value measured is actual value, then at present frequency point f1Imitating signal source setpoint power output is truer than it
The big d1 of outputf1=a1-b1f1, i.e. Frequency point fnImitating signal source output power error, n=1,2 ..., N,
N is positive integer.
Second step, the receiver power of calibration radio equipment auto testing instrument
As shown in Fig. 7 (c), present frequency point is constant, in order to make the real output of simulation signal generator be
C1, it is considered to upper d1f1, the output of the program control simulation signal generator of radio equipment auto testing instrument is set to c1+d1f1,
At this moment signal power approximates with the accuracy of energy meter.Radio equipment auto testing instrument measure analog
The power of signal source is p1f1, the numeric ratio recorded is worth big d2 reallyf1=p1f1-c1, i.e. auto testing instrument connect
Receive acc power error；By d2f1Store in region corresponding for self calibration file medium frequency point f1.
Changing present frequency point makes it travel through f1～fN, repeat the first step and second step, it is thus achieved that each Frequency point pair
Receiver power error d2 answeredf1～d2fN, form self calibration file as shown in table 1.
| Frequency | f1 | f2 | f3 | … | fn | … | fN-1 | fN |
| Error | d2f1 | d2f2 | d2f3 | … | d2fn | … | d2fN-1 | d2fN |
Table 1
When this table 1 actually used, value actually measured for radio equipment auto testing instrument is deducted corresponding frequencies
Corresponding d2, it is simply that real performance number.
3rd step, demarcates the power of spectrum analyzer
As shown in Fig. 7 (d), the output frequency of the program control simulation signal generator of radio equipment auto testing instrument be f1,
Output is c1+d1f1, the power using spectrum analyzer to record simulation signal generator output signal is e1f1,
The big d3 of numeric ratio actual value that then spectrum analyzer recordsf1=e1f1-c1.Change the output letter of simulation signal generator
Number frequency makes it travel through f1～fN, it is thus achieved that the spectrum analyzer power error d3 that each Frequency point is correspondingf1～d3fN。
4th step, the transmitter power of calibration radio equipment auto testing instrument
As shown in Fig. 7 (e), radio equipment auto testing instrument programme-controlled automatic test instrument output power of transmitter is
p31Signal be Frequency point f1 to spectrum analyzer, emission signal frequency, spectrum analyzer record signal
Power is g(p31-f1), then the real power of this signal is p2(f1-1)=g(p31-f1)-d3f1；Will value p3 be set1And its
Corresponding actual value p2(f1-1)Preserve.
Change auto testing instrument output power of transmitter (p31～p3M-1) and output frequency (f1～fN) various
Under signal frequency and power condition, calibration obtains a two-dimensional data table, such as table 2 below.
Table 2
According to this table 2, the frequency power level of tested electronic communication equipment can be compensated, improve accuracy.Mend
Repay process as follows:
Auto testing instrument emitting portion: if it is freq that auto testing instrument to be controlled launches frequency, power is
The signal of level, by transmitter calibration table, finds just less than equal to freq with just greater than equal to freq
Two Frequency points, it is assumed that be f2 and f3；Under the two frequency, table look-up respectively 2 find just less than or
Equal to level and just greater than or equal to two test values of level, by linear interpolation, the most proportionally close
System, can obtain making output signal frequency is freq, and power is corresponding when being level arranges output power value,
Auto testing instrument is set according to this value, it can be made to launch signal and meet requirement.
Auto testing instrument receiving portion: the correction card of receiving portion is simpler than launching, its content is automatically to survey
Examination instrument records measurement error when equal-wattage different frequency.When test compensates, according to frequency, in Table 1
Find error, from test value, deducted this error, thus compensate for test result.
In sum, these are only presently preferred embodiments of the present invention, be not intended to limit the guarantor of the present invention
Protect scope.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made,
Should be included within the scope of the present invention.
Claims (8)
1. a radio equipment automatic testing equipment, it is characterised in that include interface adapter and use general
The radio equipment auto testing instrument of test instrumentation interface；Described radio equipment auto testing instrument includes: master control borad,
Digital intermediate frequency plate, audio board, rf board, directional couple module, display input module and self-powered module；
Embedded master control borad connects audio board and rf board by digital intermediate frequency plate, and rf board connects directional couple mould
Block, master control borad is also connected with showing input module；The audio port that audio board provides connects quilt by interface adapter
Survey the audio port of radio equipment；The control mouth that master control borad provides connects tested radio equipment by interface adapter
Control mouth；Directional couple module provides two antenna/loading interfaces and two radio frequency mouths, two antenna/loads
Interface is used for connecting load or corresponding wave band antenna, and two radio frequency mouths are respectively used to connect the tested letter of corresponding wave band
The radio frequency mouth of road equipment；Described corresponding wave band includes shortwave and ultrashort wave；
Described directional couple module includes ultrashort wave bonder and shortwave bonder, and described rf board includes switch
Group and radio frequency processing passage；Radio frequency processing passage connects digital intermediate frequency plate, and connects ultrashort wave by switches set
Bonder and shortwave bonder；Described switches set is used for switching digital intermediate frequency plate, radio frequency processing passage with ultrashort
Ripple bonder and the connected relation of shortwave bonder；Shortwave bonder connects antenna/loading interfaces that shortwave is corresponding
With radio frequency mouth, ultrashort wave bonder connects antenna/loading interfaces corresponding to ultrashort wave and radio frequency mouth；Described ultrashort
Ripple bonder and shortwave bonder, for being coupled out by the signal from rf board, will set from tested channel
Standby radiofrequency signal is divided into two parts, a part to introduce rf board, and another part introduces antenna/loading interfaces；
Master control borad arranges tested radio equipment state by controlling mouth；According to from outside test script or root
The test script generated according to the input of display input module, produces test signal and is transferred to digital intermediate frequency plate,
Digital intermediate frequency buttress produces digital signal according to test signal and is converted to analogue signal, is sent to audio board or penetrates
Frequently plate carries out signal condition, and the signal after audio board is nursed one's health is exported to tested radio equipment by audio port,
The signal nursed one's health through rf board is exported to tested radio equipment by radio frequency mouth；After tested radio equipment processes
The output signal produced arrives digital intermediate frequency plate, or taking via directional couple module via audio board after regulating
After the regulation of sample and rf board arrive digital intermediate frequency plate, digital intermediate frequency plate complete signal analog-to-digital conversion,
Signal processing also carries out test index calculating, then result of calculation is transferred to master control borad, by master control borad control
Display input module shows；
Self-powered module is audio board, master control borad, digital intermediate frequency plate and rf board provide power supply.
2. radio equipment automatic testing equipment as claimed in claim 1, it is characterised in that in described numeral
Frequently plate uses FPGA to realize, and fpga logic is divided into transmitter test cell and receiver test unit；
Transmitter test cell, according to the test signal from master control borad, produces digital signal, passes through audio board
Send to tested radio equipment after being converted to audio signal；The radiofrequency signal of tested radio equipment transmitter output,
It is coupled out a part of signal by directional coupler and is transferred to rf board, rf board carry out low-pass filtering and do one
After secondary power adjusts, return the transmitting test processes unit of digital intermediate frequency plate；This transmitting test processes unit enters
One step uses the method for bandpass sampling, directly gathers the radiofrequency signal from rf board, converts thereof into numeral
Signal, and with digital method to conversion after signal carry out automatic growth control, quadrature frequency conversion, extraction filter
The process that ripple, demodulation calculate, completes the test of tested radio equipment transmitter；
Receiver test unit, according to the test signal from master control borad, uses digital method to generate two-way orthogonal
Digital signal, then after carrying out the process of digital interpolative filtering, digital quadrature up-conversion, digitaltoanalogconversion,
Through rf board conditioning power output extremely tested radio equipment；The audio frequency that the receiver of tested radio equipment produces
Signal returns the receiver test unit of digital intermediate frequency plate via audio board；This receiver test unit is by audio frequency
After signal digitized, carry out the calculating of test index further, complete radio equipment receiver test.
3. radio equipment automatic testing equipment as claimed in claim 2, it is characterised in that described FPGA
Transmitter test cell and receiver test unit perform testing process time share computing module, described meter
Calculate module and include that automatic growth control module, digital interpolative filtration module, filtering extraction module, demodulation calculate
Module, quadrature frequency conversion module and numeral orthometric up-conversion module.
4. radio equipment automatic testing equipment as claimed in claim 3, it is characterised in that described rf board
In switches set include the one 1 point 2 switch, the 2nd 1 point 2 switch, the 3rd 1 point 2 switch and the 4th 1
Divide 2 switches；Radio frequency processing passage includes exporting treatment channel and input processing passage；
The coupled end of shortwave directional coupler connects the second end of the one 1 point of 2 switch, and isolation end connects the 3rd 1
Divide the second ends of 2 switches；The coupled end of ultrashort wave directional coupler connects the 3rd end of the one 1 point of 2 switch,
Isolation end connects the 3rd end of the 3rd 1 point of 2 switch；First end of the one 1 point of 2 switch connects the 2nd 1 point 2
First end of switch, the second end of the second end the 4th 1 point of 2 switch of connection of the 2nd 1 point of 2 switch, the 2nd 1
The 3rd of 2 switches are divided to terminate into input processing passage；The 1st of 4th 1 point of 2 switch terminates and processes into output
Passage；1st end of the 3rd 1 point of 2 switch is directly accessed digital intermediate frequency plate；Described output treatment channel includes
Automatic level controller ALC, 90dB/10dB programmable step attenuator being sequentially connected in series and bank of filters；ALC
Connecting digital intermediate frequency plate, bank of filters connects the first end of the 4th 1 point of 2 switch；Described input processing passage
Including 20dB attenuator and the 5th 1 point of 2 switch；The input of 20dB attenuator connects the 2nd 1 point 2 to be opened
The 3rd end closed, the outfan of 20dB attenuator connects the second end of the 5th 1 point of 2 switch；5th 1 point 2
The first of switch terminates into digital intermediate frequency plate；4th 1 point 2 switch the 3rd end and the 5th 1 point 2 switch
3rd end is drawn this rf board and is formed Insertion Loss isolation degree test dual-port；All 1 point of 2 switches accept in numeral
Frequently the control of plate；
When testing transmitting power, frequency accuracy and the modulation quality of radio equipment, if input signal is
Shortwave frequency band signals, then digital intermediate frequency buttress arranges 1 point of 2 switches set according to frequency range, by shortwave directional coupler
Coupled signal be input to 20dB attenuator and carry out signal attenuation, the signal after decay is opened through the 5th 1 point 2
Pass is input to digital intermediate frequency plate；If input signal is ultrashort wave frequency band signal, then digital intermediate frequency buttress is according to frequency
Section arranges 1 point of 2 switches set, the coupled signal of ultrashort wave directional coupler is input to 20dB attenuator and carries out
Signal attenuation, the signal after decay is input to digital intermediate frequency plate through the 5th 1 point of 2 switch；
When testing the standing-wave ratio of radio equipment, if input signal is shortwave frequency band signals, then digital intermediate frequency
Buttress arranges 1 point of 2 switches set according to frequency range, by direct with digital intermediate frequency plate for the isolation end of shortwave directional coupler
Connection；If input signal is ultrashort wave frequency band signal, then digital intermediate frequency buttress arranges 1 point 2 according to frequency range and opens
Pass group, directly connects the isolation end of ultrashort wave directional coupler with digital intermediate frequency plate；
When testing receiver sensitivity and the receiver dynamic range of radio equipment, the output of digital intermediate frequency plate
Signal enters ALC and carries out algorithm for power modulation, power is adjusted to the fixed value of 10dBm, then according to test
Need the scope utilizing 90dB/10dB programmable step attenuator to attenuate the signal to 10dBm～-80dBm；Decline
Signal after subtracting chooses corresponding shortwave by 1 point of 2 switches set after device group carries out signal filtering after filtering
Directional coupler or ultrashort wave directional coupler carry out coupling output, complete receiver sensitivity and receiver
Dynamic range is tested.
5. radio equipment automatic testing equipment as claimed in claim 1, it is characterised in that described self-powered
Module includes rechargeable battery, power management module and DC-DC converting unit；Power management module connects outside
Power supply input, rechargeable battery and DC-DC modular converter；DC-DC modular converter power output end connects letter
Electricity consumption module on road equipment auto testing instrument.
6. radio equipment automatic testing equipment as claimed in claim 3, it is characterised in that described master control borad
Prestored multiple independent test module, the corresponding test event of each test module, each test module
A corresponding visual icon；Master control borad has also prestored multiple control statement, each control statement correspondence one
Individual visual icon；When manual test, master control borad receives tester's selection to test event, and
Utilize control statement and ordered execution sequence that tester chooses, test event is carried out order and holds
OK, to realize the control of test event；When automatically testing, master control borad is predetermined according to test script
Test event order, performs automatically；When performing each test event, send test signal to digital intermediate frequency plate,
Digital intermediate frequency buttress realizes the execution of test event according to test signal by calling shared computing module.
7. a radio equipment Auto-Test System, it is characterised in that including: calibration subsystem, test rule
Draw editor subsystem, System of Quality Control, also include the channel as described in claim 1～6 any one
Equipment automatic testing equipment；Calibration subsystem, System of Quality Control and planning editor's subsystem connecting channel
Radio equipment auto testing instrument in equipment automatic testing equipment；
Described radio equipment auto testing instrument carries out self calibration according to the self calibration file carrying out self calibration subsystem；
Receive the test script planned according to tested radio equipment type that test-schedule editor's subsystem is sent, logical
Cross testing results script the tested radio equipment of current type is tested；After completing test, by tested letter
The test result file of road equipment preserves to System of Quality Control, System of Quality Control complete test knot
The statistical analysis of fruit.
8. radio equipment Auto-Test System as claimed in claim 7, it is characterised in that use described school
During the calibration of quasi-subsystem, the program control spectrum analyzer of radio equipment auto testing instrument, simulation signal generator and energy meter
The transmitter and receiver of himself is calibrated:
During calibration frequency accuracy, transmitter and the spectrum analyzer of radio equipment auto testing instrument are in work
State, exports spectrum analyzer by the transmitting signal of radio equipment auto testing instrument；Adjust and launch signal frequency
Rate, the signal frequency making spectrum analyzer record is consistent with nominal frequency value, thus completes to use spectrum analyzer
The process of calibration radio equipment auto testing instrument frequency；
During calibration power accuracy, demarcate spectrum analyzer and the power of simulation signal generator first by energy meter,
Re-use simulation signal generator and the power of Spectrum Analyzer Calibration radio equipment auto testing instrument, specifically include as
Lower step:
(1) power of simulation signal generator is demarcated
Radio equipment auto testing instrument controls simulation signal generator so that simulation signal generator transmitting setting power value a1,
The signal of different frequency, the Frequency point launching signal is designated as fn, n=1,2 ..., N, N are positive integer；For frequency
Rate point fn, energy meter record the transmitting power data b1 of simulation signal generatorfn, the value recorded with energy meter is true
Real-valued, then Frequency point fnUnder, simulation signal generator output power error is d1fn=a1-b1fn；
(2) receiver power of radio equipment auto testing instrument is calibrated
The output frequency of the program control simulation signal generator of radio equipment auto testing instrument is fn, output is set to
c1+d1fn, c1 is expectation simulation signal generator real output, uses radio equipment auto testing instrument to measure mould
The power intending signal source is p1fn；Then Frequency point fnUnder, auto testing instrument receiver power error d2fn=p1fn-c1；
N is made to take all over 1～N, by d2 in the reception errors table in self calibration filefnWith Frequency point fnCorresponding storage；
(3) power of spectrum analyzer is demarcated
The output frequency of the program control simulation signal generator of radio equipment auto testing instrument is fn, output is set to
c1+d1fn, the power using spectrum analyzer measure analog signals source output signal is e1fn；Then Frequency point fn
Under, the power measurement error of spectrum analyzer is d3fn=e1fn-c1；N is made to take all over 1～N, it is thus achieved that each frequency
The spectrum analyzer power measurement error that point is corresponding；
(4) transmitter power of radio equipment auto testing instrument is calibrated
The transmitter output frequency of radio equipment auto testing instrument is fn, power be p3mSignal to spectrum analysis
Instrument, spectrum analyzer the power recording signal is designated as g(p3m-fn), then the real power of current demand signal is
p2(fn-m)=g(p3m-fn)-d3fn；Frequency values f will be setn, performance number p3 is setmWith corresponding actual value p2(fn-m)
Correspondence preserves；
Making n take all over 1～N, make m take all over 1～M, M is positive integer, then calibration obtain various signal frequency and
A transmitter power calibration two-dimensional data table under power condition.
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| CN110501667A (en) * | 2019-08-02 | 2019-11-26 | 西安飞机工业（集团）有限责任公司 | A kind of test macro and ground experiment method of ultrashort wave direction finder |
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| CN111682907A (en) * | 2020-04-29 | 2020-09-18 | 北京空间飞行器总体设计部 | Satellite antenna isolation high-precision test system |
| CN112666504A (en) * | 2020-12-01 | 2021-04-16 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | Portable detection equipment of digital instantaneous frequency measurement receiver |
| CN112769508A (en) * | 2020-12-01 | 2021-05-07 | 北京电子工程总体研究所 | System and method for indoor simulation of ultra-short wave communication quality test |
| CN112557746A (en) * | 2020-12-08 | 2021-03-26 | 广东省计量科学研究院东莞计量院 | Power level correction method and system for digital mobile communication comprehensive tester |
| CN112636848A (en) * | 2020-12-22 | 2021-04-09 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Hand-held radio comprehensive tester and testing method thereof |
| CN112804018A (en) * | 2020-12-22 | 2021-05-14 | 中电科仪器仪表有限公司 | Receiver automatic measurement method based on portable electromagnetic comprehensive test equipment |
| CN112636848B (en) * | 2020-12-22 | 2022-12-13 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Hand-held radio comprehensive tester and testing method thereof |
| CN113343621A (en) * | 2021-06-15 | 2021-09-03 | 南京熊猫汉达科技有限公司 | Automatic test system of short wave comprehensive digital platform |
| CN115189781A (en) * | 2022-06-02 | 2022-10-14 | 中国信息通信研究院 | System and method for calibrating occupied bandwidth of instrument |
| CN115189781B (en) * | 2022-06-02 | 2024-04-09 | 中国信息通信研究院 | System and method for calibrating bandwidth occupied by instrument and meter |
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