CN102932287B - Time domain searching in testing and measuring device - Google Patents
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- CN102932287B CN102932287B CN201110239050.1A CN201110239050A CN102932287B CN 102932287 B CN102932287 B CN 102932287B CN 201110239050 A CN201110239050 A CN 201110239050A CN 102932287 B CN102932287 B CN 102932287B
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Abstract
The invention names time domain searching in a testing and measuring device, and provides a device and a method for searching events of IQ (In-Phase and Orthogonality)-based time domain tracks and marking events, and analyzing interesting intervals at or near an event on a display unit of the testing and measuring device. The testing and measuring device comprises an input terminal, an ADC (Analog to Digital Converter), a digital down converter an acquire storage, a track generating part and a searching unit, wherein the input terminal is capable of receiving RF (Radio Frequency) signals, the ADC is capable of digitizing the RF signals, the digital down converter is capable of generating IQ base band component information from the digitized RF signals, the acquire storage is used for acquiring and storing records, the track generating part is used for generating one or a plurality of IQ-based time domain tracks, and the searching unit is used for scanning one or more events of each IQ-based time domain track. The searching unit can position and mark the events so as to display the events on the display unit of the testing and measuring device.
Description
Technical field
The present invention relates generally to the when domain search in test and sensing device.
Background technology
Radio frequency (RF) transmission becomes increasingly prevalent in the current wireless connection world.For example, cell phone is used
The whole world just increases sharply, and high speed data network extends, and family wireless network and wide area network are just becoming universal.At these
In progress similar with other, now all the more it is essential that, test and sensing device provides effective search capability so that send out
The exact picture of raw situation can be reconstructed and be supplied to Field Force, such as Test Engineer and other qualified technicians.
RF carrier wave signal can transmit information based on the change of the amplitude of carrier wave, frequency or phase place by various modes.
Administration section generally distributes the radio-frequency region that will be used for different purposes.Therefore, permit some devices only making a reservation within band
Operated.This kind of restriction is produced and limited and in accordance with the increasingly complex and effective side of generally acknowledged communication standard for being adapted to these
Method.For example, many modern transmission systems meet communication standard using frequency hopping and phase-modulation, and provide contention similar resource
Different device between improvement feature and intercommunication.
Most of modern real-time spectrum analysis devices (RTSA) can receive RF signals, and being captured of associating with signal of storage
The record of data.But, using routine techniquess, it is difficult to or can not possibly search for and separate these signals some aspect, for example
Time domain event in RF data.Do not exist and capture RF signal datas to obtain any side of relevant time domain phenomenon for search
Method.Therefore, it is still necessary to for for the new equipment and method that are previously stored record of time domain event searching RF signal datas.
The content of the invention
Theme inventive embodiment provides the time domain specification for searching for previously stored radio frequency (RF) signal data and searches
Rope technology.Theme equipment, system and method are received to RF signals, digitized and down coversion, so as to from digitized RF signal
To produce I (homophase) and Q (orthogonal) base band component information.Obtain the digitized I that memorizer is obtained and storage is associated with RF signals
Record with one or more of Q base band component information.Track Pick-up part generates one or more time-domain traces based on IQ, and
And search unit scans one or more one or more time domain events based on the time-domain traces of IQ.
In some example embodiments of the present invention, search unit is configured to positioning and labelling is previously stored based on IQ's
One or more time domain events in time-domain traces.For example, search unit can be positioned with mark frequency in the times locus
Short pulse (runt) or illegal state.Other examples include search unit, search unit positioning and labelling based on IQ when
Foundation and holding event, window events, switching rate event or pulse width event and other probabilities in the track of domain.Base
In the time-domain traces of IQ such as phase place can be included to the times locus, frequency versus time track, amplitude (that is, power over time) rail
Mark or demodulated data and other appropriate time-domain traces and data.In addition, search unit can position with labelling and I and
The event of the independent Track association of Q base band component information.In other words, search unit can directly scan I base band component information
Individually track (that is, I is to the times locus) and/or the directly independent track (that is, Q is to the times locus) of scanning Q base band component information.
Display unit is adapted to show at institute's flag event or neighbouring interval interested.
Description of the drawings
Fig. 1 illustrates the block diagram according to the test and sensing device of an exemplary embodiment of the present invention, including modulus
Transducer (ADC), digital down converter, the acquisition memorizer for storing one or more records, including Track Pick-up unit and search
The controller and display unit of cable elements.
Fig. 2A illustrates the search unit (the wherein source data with frequency versus time) of Fig. 1 and including being swept by search unit
The digitized record of the various time domain events retouched and recognize.
Fig. 2 B are illustrated and shown according to simplifying for an exemplary embodiment of the present invention, connect including frequency versus time track
The spectrogram and/or spectrum of the RF signals received with test and sensing device.
Fig. 3 A illustrate the search unit (source data wherein with phase place to the time) of Fig. 1 and including being swept by search unit
The digitized record of the various time domain events retouched and recognize.
Fig. 3 B are illustrated and shown according to simplifying for an exemplary embodiment of the present invention, the times locus are connected including phase place
The spectrogram and/or spectrum of the RF signals received with test and sensing device.
Fig. 4 A illustrate the search unit (the wherein source data with power over time) of Fig. 1 and including being swept by search unit
The digitized record of the various time domain events retouched and recognize.
Fig. 4 B are illustrated and shown according to simplifying for an exemplary embodiment of the present invention, connect including power over time track
The spectrogram and/or spectrum of the RF signals received with test and sensing device.
Fig. 5 is illustrated according to some embodiments of the present invention, the flow process for search based on the technology of the time-domain traces of IQ
Figure.
Specific embodiment
Fig. 1 illustrates the block diagram according to the test and sensing device 100 of an exemplary embodiment of the present invention, including mould
Number converter (ADC) 108, digital down converter 115, obtain memorizer 130, including Track Pick-up part 145 and search unit
147 controller 140 and display unit 150.Test and sensing device 100 can be digital oscilloscope, real-time spectrum analysis device
Or other appropriate measurement apparatus (RTSA).For succinct for the sake of consistent (and unrestricted), test and sensing device is herein
By commonly referred to as oscillograph.
Oscillograph 100 can have be adapted to the such as input terminal 110 that uses cooperatively with various embodiments described herein it
Multiple passages of class or input.Although oscillograph can have single input terminal 110, described inventive aspect equally can be fitted
For the oscillograph with four inputs or any amount of input.Although the component of oscillograph 100 is shown as direct phase mutual coupling
Close, but it is to be understood that oscillograph 100 can include various other circuits or component software, input, output and/or interface, it
Be not necessarily illustrated, but be arranged between the shown component of oscillograph 100 or be otherwise associated with.
Receive tested electric signals, be preferably RF signals in input terminal 110.RF signals can be converted into analog intermediate frequency
(IF) signal, analog if signal before by the digitizeds of ADC 108 after filtering.But, will typically refer to that " RF believes herein
Number " or " multiple RF signals ", and it is to be understood that this referring to can include one or more RF signals or from RF signals institute
One or more the IF signals for drawing.
ADC 108 is configured to tested RF signals digitized.Digital down converter 115 is operatively coupled to ADC 108,
But it is without the need for directly coupled.Low-converter 115 receives digitized RF signal, and (same to produce I from digitized RF signal
Phase) and Q (orthogonal) base band component information.More particularly, sinusoidal and cosine and digitized RF signal are entered line number by frequency mixer 120
Value is multiplied, and thus generates I and Q component information comprising full detail present in primary RF signals.Hereafter, can be using selection
Wave filter 125 is selected to component of signal data, and 125 pairs of noises associated with signal of decimation filter and sample carry out numeral
Filter and reduce its quantity.
Obtain memorizer 130 and be operatively coupled to digital down converter 115, and be configured to obtain and store and RF signals
One or more records 135 of the digitized I and Q base band component information of association.In other words, acquisition memorizer 130 is under numeral
Converter 115 receives I and Q base band component information, and stores it.In certain embodiments, the number for being exported by ADC 108
Word data can first be directly stored in memorizer, such as memorizer 130, and and then accessed by low-converter 115, to produce
Raw I and Q base band component information.Oscillographic each input terminal 110 deposits can the acquisition that its association wherein stores component information
The different piece of reservoir 130 or different records 135.It can be any kind of memorizer to obtain memorizer 130.For example, obtain
Access to memory 130 can be volatile memory, nonvolatile memory, dynamic random access memory, static memory etc.
Deng.
Oscillograph 100 includes controller 140, and the controller 140 is coupled to acquisition memorizer 130 with being operable to, and
I and Q base band component information can be accessed and/or process from memorizer 130 is obtained.Controller 140 can actually obtain data
During or after accessing and/or process fetched data.Controller 140 is additionally coupled to display unit 150, and produces correspondence
Waveform by display unit 150 for being shown.
Controller 140 can include Track Pick-up part 145 and search unit 147.Track Pick-up part 145 uses I and Q
Base band component information is generating one or more time-domain traces based on IQ.For example, after down conversion, Track Pick-up part
145 can generate phase place by calculating arc tangent, the i.e. ARCTAN (Q/I) of (Q is divided by I).Track Pick-up part 145 can also
It is enough to generate frequency by calculating derivative, the i.e. d/dt (phase place) of phase versus time.Phase and frequency be used for respectively generate or
Phase place is drawn to time and frequency versus time track.In addition, Track Pick-up part 145 can generate amplitude (that is, power pair when
Between) track, this for example can be by taking square root (such as SQRT (I^2+Q^2)) next life square with the summed square of Q of I
Into.Various tracks will be in more detail further described below.
Search unit 147 can scan one or more events based on the time-domain traces of IQ in acquired record 135.
For example, the time-domain traces if based on IQ are frequency versus time tracks, then when search unit 147 can be positioned with mark frequency pair
Between in track such as short pulse or illegal state etc event.In addition, search unit 147 can be positioned and labelling and I and Q bases
The event of the independent Track association with component information.In other words, search unit can directly scan the independent of I base band component information
Track (that is, I is to the times locus) and/or the directly independent track (that is, Q is to the times locus) of scanning Q base band component information.As
As will be discussed in greater detail below, various different types of event of the various time-domain traces based on IQ can be scanned.One can be shown
At individual or multiple institute's flag events or neighbouring interval interested so that oscillographic user can efficiently locate and analyze sense
Interest region.
Display unit 150 be adapted to be shown in the same display of display unit one or more time-domain traces based on IQ and
Institute's flag event is together with (that is, close to each other or overlap each other) frequency domain trace, such as spectrum of the spectrum of RF signals and/or RF signals
Figure.Frequency domain trace can together be shown in same display based on the time-domain traces of IQ and/or with its time correlation, this is fair
Family searched events allowable and and then the while event checked in time domain and frequency domain；But, this mixed display is not required, and
And should be appreciated that based on IQ time-domain traces can and labelling independently searched with any frequency domain trace, be also in turn one
Sample.
The frequency domain trace of the spectrum and spectrogram of such as RF signals etc is by I and Q data application fast fourier transform
(FFT) algorithm is producing.When the Search Results based on the time-domain traces of IQ are generated, additionally it is possible in the same display of display unit
In in the position display institute flag event for being easy to oscillographic user to check.In other words, based on the time-domain traces of IQ, based on IQ's
Frequency domain trace and Search Results being capable of the displays close to each other in the single display of display unit 150.
Frequency domain is mentioned herein, but it is to be understood that they refer to frequency domain trace, this is that those skilled in the art understands
's.For example, the spectrum of RF signals be within frequency domain, and generally include have represent frequency range trunnion axis and be represented to
Determine the chart of the amplitude of frequency or the vertical axises of signal power.In addition, the spectrogram of RF signals is considered as within frequency domain, and
Generally include there are the trunnion axis for representing frequency range, the vertical axises of express time and represented by the change color of track
The chart of amplitude.
Conversely, time domain includes different types of signal and/or track.For example, frequency versus time track is understood to be
Within time domain rather than frequency domain, and it is understood to the trunnion axis with express time and represents the vertical axises of frequency.
Similar to frequency versus time, power over time track illustrates the power of signal how time to time change, and quilt
It is not understood as within time domain；Horizontal axis plots time, and vertical axises represent power-generally with logarithmic scale-rather than line
The voltage of property scale.In addition, phase place shows to the times locus as the function of time, and be understood to be time domain it
It is interior；Horizontal axis plots time, and vertical axises represent the scope of phase value.Time-domain traces based on IQ referred to herein, they
Signal and/or the track drawn from I and Q component information is referred to, but it is in time domain, is formed with frequency domain and is compareed.
ADC 108, digital down converter 115, including in the controller 140 and display unit 150 of search unit 147
Any one may be present in hardware, software, firmware and either in any combination of them or uses them to realize.
Fig. 2A illustrates the search unit 147 (the wherein source data 205 with frequency versus time) of Fig. 1 and including by searching for
The digitized record 135 of various time domain events that unit 147 is scanned and recognized.
Track Pick-up part 145 generates frequency versus time track using I and Q base band components information.Search unit 147 is determined
Position and mark frequency are to one or more events in the times locus.For example, search unit 147 can be positioned and mark frequency pair
Short pulse 210 in the times locus, or in other words, in entering and exiting the frequency versus time track of predefined amplitude threshold
Irregular positive or negative pulse.Used as another example, search unit 147 is configured to positioning and labelling wherein frequency versus time track
Into or exit one or more window events 220 of predefined window.Window can be defined by the first and second threshold values.
In some example embodiments, search unit 147 is one or more scanning notes of frequency burst width event 240
Record；That is, wherein positioning the width with the burst of the signal activity within labelling given frequency.Can obtain and store one
Individual above RF signal, each can be scanned to one or more the frequency burst width for obtaining being associated with RF signals
Event.Once located and mark frequency burst width event 240, then they can show on display unit 150.
In some example embodiments, search unit 147 be configured to position and labelling based on IQ time-domain traces in its
The event of its type, for example wherein the pulse width of the pulse of frequency versus time track is less than or greater than the pulse width of given threshold value
Degree or burr (glitch) the event 215, one side of wherein frequency versus time track meet predefined multichannel logical criteria
Logic event 235, wherein frequency versus time track switching rate less than or greater than the predefined limit switching rate event
The edge of 230 either wherein frequency versus time tracks is found or otherwise meets the beginning or end of such as RF frequency displacements
Etc given standard edge event 225 and other appropriate events.
Fig. 2 B to be illustrated and show 200 according to simplifying for an exemplary embodiment of the present invention, including frequency versus time rail
The spectrogram 285 and/or spectrum 290 of the RF signals that mark 255/260 is received together with test and sensing device.
As shown in Figure 2 B, showing 200 top includes frequency versus time track 255 and some marker characters 250.Marker character
250 indicate wherein to find the position in the frequency versus time track 255 of event.
Show that 200 can include resize-window 245, a part 260 for wherein frequency versus time track 255 is strengthened
And/or amplify so that the special characteristic of waveform can be easier to be checked by oscilloscope user.
In general, resize-window 245 will include and the marker character 250 of the institute's locating events in the acquired record of mark
At least one corresponding marker character 252.The mark frequency of marker character 252 is to the interesting part with event in the times locus 260
Or interval.For example, Fig. 2 B illustrate the short pulse event 265 of positioning and labelling in frequency versus time path portion 260, its correspondence
In the incorrect frequency hopping of frequency versus time track 255.Constitute the limit or parameter or other events of the aspect of incorrect frequency hopping
Any one be that oscillographic user is configurable.Any one of above-mentioned event can in a similar manner be come by search unit 147
Positioning and labelling.
Additionally, the spectrogram 285 and/or spectrum 290 in frequency domain can be together with the frequency versus time track in time domain (i.e.,
It is close to each other or overlap each other) and show in the single display 200 of display unit 150 together with marker character.Change speech
It, spectrogram 285 and spectrum 290 do not have the display in independently showing, otherwise this will make it difficult to for the information between signal to carry out phase
Close.Conversely, the information of the spectrogram 285 and/or spectrum 290 in frequency domain can be in same display and from the letter of time-domain traces
Breath, such as frequency versus time track 255/260 and marker character carry out time correlation.
In certain embodiments, search unit 147 can be carried out in response to user selection and in acquired record automatically
Scanning and multiple events of the location frequency to the times locus, and showing that automatic display frequency is to the times locus and pass on 200
Connection marker character, further analyzes for user.It should be appreciated that any one of above-described search and labelling technique can be automatic
The various events that are applied in the time-domain traces based on IQ for being recognized and shown by oscillograph 100.
Fig. 3 A illustrate the search unit 147 (source data wherein with phase place to the time 305) of Fig. 1 and including by searching for
The digitized record 135 of various time domain events 350 that unit 147 is scanned and recognized.
Track Pick-up part 145 generates phase place to the times locus using I and Q base band components information.Search unit 147 is determined
Position and labelling phase place are to one or more events 350 in the times locus.For example, can position can with labelling for search unit 147
Similar to above-mentioned event or otherwise corresponding event, but phase place is applied to the times locus 360.
As shown in Figure 3 B, showing 300 top includes phase place to the times locus 360 and marker character 352.The energy of marker character 352
Enough it is one of some marker character (not shown), the marker character indicates wherein to find the phase place of event to the times locus 360
In position.
Although showing that 300 are not shown resize-window, such as 245, but it is to be understood that this resize-window can be included,
Enable phase place to strengthen and/or amplify the part of the times locus 360, and therefore be easier to be come by oscilloscope user
Inspection.
As previously described, marker character 352 identifies the institute's locating events in acquired record.The labelling phase place pair of marker character 352
Interesting part with event or interval in the times locus 360.For example, Fig. 3 B illustrate fixed in phase place is to the times locus 360
Position and the switching rate event 365 of labelling.Switching rate event 365 can indicate that for example wherein modulated signal consumes excessive
Time the position from a phase shift to another phase place.Constitute switching rate event aspect the limit or parameter or its
Any one of its event is that oscillographic user is configurable.Any one of above-mentioned event can be by search unit 147 with similar
Mode is positioning and labelling.
Additionally, spectrogram 385 in frequency domain and/or spectrum 390 can together with the phase place in time domain to the times locus (i.e.,
It is close to each other or overlap each other) and show in the single display 300 of display unit 150 together with marker character.Change speech
It, spectrogram 385 and spectrum 390 do not have the display in independently showing, otherwise this will make it difficult to for the information between signal to carry out phase
Close.Conversely, the information of the spectrogram 385 and/or spectrum 390 in frequency domain can be in same display and from the letter of time-domain traces
Breath, such as phase place carry out time correlation to the times locus 360 and marker character.
In certain embodiments, search unit 147 can be carried out in response to user selection and in acquired record automatically
Scanning and position multiple events 350 of the phase place to the times locus, and show automatically on 300 phase place to the times locus showing and
Connective marker is accorded with, and is further analyzed for user.It should be appreciated that any one of above-described search and labelling technique can be certainly
The dynamic various events being applied in the time-domain traces based on IQ for being recognized and shown by oscillograph 100.
Fig. 4 A illustrate (the wherein source of the power over time 405 with sometimes referred to as amplitude locus of search unit 147 of Fig. 1
Data) and including the digitized record 135 of the various time domain events 450 for being scanned by search unit 147 and being recognized.
Track Pick-up part 145 is using I and Q base band component information next life success rates to the times locus.Search unit 147 is determined
One or more events 450 in position and labelling power over time track.For example, can position can with labelling for search unit 147
Similar to above-mentioned event or otherwise corresponding event, but it is applied to power over time track 460.
As shown in Figure 4 B, showing 400 top includes power over time track 460 and marker character 452.The energy of marker character 452
Enough it is one of some marker character (not shown), the marker character indicates the power over time track 460 for wherein finding event
In position.
Although showing that 400 are not shown resize-window, such as 245, but it is to be understood that this resize-window can be included,
The part of power over time track 460 is strengthened and/or is amplified, and therefore be easier to be come by oscilloscope user
Inspection.
As previously described, marker character 452 identifies the institute's locating events in acquired record.The labelling power pair of marker character 452
Interesting part with event or interval in the times locus 460.For example, Fig. 4 B illustrate the power at the edge for finding RF bursts
Edge event 465 to positioning and labelling in the times locus 460.Constitute edge event aspect the limit or parameter or other
Any one of event is that oscillographic user is configurable.Any one of above-mentioned event can be by search unit 147 with similar side
Formula is positioning and labelling.
Additionally, the spectrogram 485 and/or spectrum 490 in frequency domain can be together with the power over time track in time domain (i.e.,
It is close to each other or overlap each other) and show in the single display 300 of display unit 150 together with marker character.Change speech
It, spectrogram 485 and spectrum 490 without in the display with other Signal separators show, otherwise this will be made it difficult between signal
Information carry out correlation.Conversely, the information of spectrogram 485 in frequency domain and/or spectrum 490 can in same display with from
The information of time-domain traces, such as power over time track 460 and marker character carry out time correlation.
In certain embodiments, search unit 147 can be carried out in response to user selection and in acquired record automatically
Scanning and multiple events 450 of the Positioning power to the times locus, and show show automatically on 400 power over time track and
Connective marker is accorded with, and is further analyzed for user.It should be appreciated that any one of above-described search and labelling technique can be certainly
The dynamic various events being applied in the time-domain traces based on IQ for being recognized and shown by oscillograph 100.
It should be appreciated that and described embodiment and technology energy shown with reference to Fig. 2A, Fig. 2 B, Fig. 3 A, Fig. 3 B, Fig. 4 A and Fig. 4 B
Enough suitable for the independent track of I and Q base band component information.In other words, search unit can directly scan I base band component information
Individually track (that is, I is to the times locus) and/or the directly independent track (that is, Q is to the times locus) of scanning Q base band component information.
Display unit then can show at institute's flag events of the I to the times locus or Q to the times locus or in both or near
Interval interested.
Fig. 5 is to illustrate the skill according to the event in some embodiments of the present invention, the time-domain traces for search based on IQ
The flow chart of art.The technology starts from 505, wherein receiving at the terminal of the test and sensing device of such as oscillograph etc all
Such as the signal of telecommunication of RF signals or analogue signal etc.Being used in 510, ADC will be electric signal digitising.The flow process subsequently into 515,
Wherein to digitized signal down coversion, to produce I and Q base band component information.520, in storage IQ base band components information and
One or more records are produced in the acquisition memorizer of related data.It is and associated based on the time-domain traces of IQ 525
Or multiple events are searching for record.Determine whether one or more events are located in record 530.If "No", the flow process
Carried out by enclosing ' A ', and the process repeats.Otherwise, the flow process enters 535, and in the time-domain traces based on IQ
Labelling institute locating events.Then, the flow process enters 540, wherein showing based on the time domain rail of IQ on oscillographic display unit
At institute's flag event or neighbouring interval interested in mark, observes for user and analyzes.
Although describing specific embodiment, it will be understood that the principle of the present invention is not limited to those embodiments.
For example, although above-described embodiment describes the heterogeneity of waveform, but the property be not be intended to statistics, for example with shake
Measurement or the property of information association；But, the disclosed embodiments are not limited to non-statistical property, but can expand to and tremble
Dynamic information etc. or other types of statistical information.Additionally, including position and symbol demodulated data also can use with
The above similar technology is searching for, position and labelling.
In certain embodiments, from including floppy disk, CD, fixed disk, volatile memory, nonvolatile memory,
Product obtained by the set of random access memory, read only memory or flash memory includes the machine with associated instructions
Accessible, associated instructions make each of machine execution invention disclosed herein when running in test and measurement apparatus
The step of embodiment.Other changes can be carried out and changed, without departing from the original of the invention that claims below is proposed
Reason.
Claims (16)
1. a kind of test and sensing device, including：
Input terminal, receives tested electric signals；
Analog-digital converter (ADC), by measured signal digitized；
Digital down converter, I (homophase) and Q (orthogonal) base band component information are produced from digitized signal；
Memorizer is obtained, one or more records for the digitized I and Q base band component information associated with digitized signal are stored；
Track Pick-up part, one or more time-domain traces based on IQ, Yi Jisheng are generated using I and Q base band components information
Into the independent track of the I and Q base band components information；And
Search unit, scans one or more events of one or more of tracks, and positioning and I and Q bases described in labelling
One or more events in independent track with component information.
2. test and sensing device as claimed in claim 1, wherein：
The Track Pick-up part is configured to generate one or more time-domain traces based on IQ；And
The search unit is configured to position and one or more in the one or more of time-domain traces based on IQ of labelling
Event.
3. test and sensing device as claimed in claim 1, also including display unit, the display unit is adapted to show described
At one or more events or neighbouring interval interested.
4. test and sensing device as claimed in claim 3, wherein：
One or more of time-domain traces based on IQ include frequency versus time track；
The search unit is configured to position and one or more events in frequency versus time track described in labelling；And
The display unit is adapted to show at one or more the institute's flag events in the frequency versus time track or neighbouring
Interval interested.
5. test and sensing device as claimed in claim 3, wherein：
One or more of time-domain traces based on IQ include phase place to the times locus；
The search unit is configured to positioning and phase place described in labelling to one or more events in the times locus；And
The display unit is adapted to show the phase place at one or more events in the times locus or neighbouring interested
Interval.
6. test and sensing device as claimed in claim 3, wherein：
One or more of time-domain traces based on IQ include power over time track；
The search unit is configured to position and one or more events in power over time track described in labelling；And
The display unit is adapted to show at one or more events in the power over time track or neighbouring interested
Interval.
7. test and sensing device as claimed in claim 1, wherein, it is wherein one that the search unit is configured to scanning
Or multiple time-domain traces based on IQ jump to one or more records of one or more events of illegal state.
8. a kind of method that search is based on the event in the time-domain traces of IQ, methods described includes：
Tested electric signals are received at oscillographic terminal；
Using analog-digital converter (ADC) by measured signal digitized；
Down coversion is carried out to digitized signal, and produces I (homophase) and Q (orthogonal) base band component information；
Obtain and store the record of the I and Q base band components information associated with the signal obtained in memorizer；
One or more time-domain traces based on IQ are generated using I the and Q base band components information, and generates the I and Q
The independent track of base band component information；
One or more events of the one or more of time-domain traces based on IQ of search；
One or more events in positioning and the independent track of I and Q base band components information described in labelling；And
It is at one or more institute's flag events that display is associated with one or more of time-domain traces based on IQ or neighbouring
Interval interested.
9. method as claimed in claim 8, wherein, one or more of time-domain traces based on IQ include frequency versus time
Track.
10. method as claimed in claim 9, wherein search for also including：
Search for one or more events of the frequency versus time track；
One or more events in frequency versus time track described in labelling；And
Show at one or more the institute's flag events in the frequency versus time track or neighbouring interval interested.
11. methods as claimed in claim 8, wherein, when one or more of time-domain traces based on IQ include phase place pair
Between track.
12. methods as claimed in claim 11, wherein search for also including：
Search for one or more events of the phase place to the times locus；
Phase place described in labelling is to one or more events in the times locus；And
Show the phase place at one or more the institute's flag events in the times locus or neighbouring interval interested.
13. methods as claimed in claim 8, wherein, when one or more of time-domain traces based on IQ include power pair
Between track.
14. methods as claimed in claim 13, wherein search for also including：
Search for one or more events of the power over time track；
One or more events in power over time track described in labelling；And
Show at one or more the institute's flag events in the power over time track or neighbouring interval interested.
15. methods as claimed in claim 8, wherein, one or more of time-domain traces based on IQ include demodulated
Data.
16. methods as claimed in claim 15, wherein search for also including：
One or more events of the demodulated data of search；
One or more events in demodulated data described in labelling；And
Show at one or more the institute's flag events in the demodulated data or neighbouring interval interested.
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| CN107478884B (en) * | 2017-04-28 | 2019-08-13 | 深圳市鼎阳科技有限公司 | A kind of method and oscillograph of quick display waveform search result |
| US10348361B2 (en) * | 2017-09-29 | 2019-07-09 | Rohde & Schwarz Gmbh & Co. Kg | Measuring device and method for phase-coherent analysis of frequency-hopping signals |
| US10502764B2 (en) * | 2018-01-05 | 2019-12-10 | Rohde & Schwarz Gmbh & Co. Kg | Signal analyzing circuit and method for auto setting an oscilloscope |
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