CN101609107A - Multiple-channel digital oscilloscope is realized the method for wave-shape fluorescent display effect - Google Patents
Multiple-channel digital oscilloscope is realized the method for wave-shape fluorescent display effect Download PDFInfo
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Abstract
The invention provides a kind of multiple-channel digital oscilloscope and realize the method for wave-shape fluorescent display effect, this method is realized by programmable logic device (PLD), programmable logic device (PLD) comprises the Wave data buffer zone, simulation video screen storer, waveform overlap-add procedure module, waveform elimination of hidden module and color conversion processing module; The length of simulation video screen storer is L, highly be W, each storage unit of simulation video screen storer is made up of two parts: intensity level m and Priority flag n, the scope of intensity level m is 0≤m≤M, M is by the bit wide decision of intensity level in the simulation video screen storer, be the maximal value that the bit wide of intensity level can be represented, prioritization is: grid 〉=up-to-date passage 〉=passage 1 〉=passage 2 of opening 〉=... passage i 〉=... 〉=passage N; This method is complete to have kept the luminance level information that a plurality of passage waveforms show, reaches the fluorescent display effect of analog oscilloscope.
Description
Technical field
The present invention relates to the waveform display technique field of digital oscilloscope, specifically relate to a kind of method for displaying waveform of multiple-channel digital oscilloscope.
Background technology
In recent years, the measurement of DYNAMIC COMPLEX signal has proposed challenge to engineering technical personnel.First generation simulation real-time oscilloscope (ART) and second generation digital storage oscilloscope (DSO) seem powerless to this.Analog oscilloscope has the shading value Presentation Function that digital oscilloscope lacks, promptly by different brightness, and the frequency of occurrences of reflected signal different piece.But analog oscilloscope lacks storage and processing capacity and advanced triggering function that digital storage oscilloscope had.Therefore, can not rely on any measurement needs that satisfy the DYNAMIC COMPLEX signal in above-mentioned two kinds of oscillographs separately, need be in conjunction with both advantages, promptly the real-time digital fluorescence that adopts special hardware circuit to gather waveform in digital oscilloscope is handled, thereby, reach the fluorescent display effect of analog oscilloscope by brightness or the colored situation of change that shows long-time interior signal.
In circuit research and development and test, often need a plurality of signals are observed simultaneously, need oscillograph can realize a plurality of channel waves just as the time show.Simultaneously, wish that also each passage waveform shows the fluorescent display effect that can both have analog oscilloscope.Therefore, the fluorescent display effect of realization multi-channel waveform has crucial meaning in digital oscilloscope.
Summary of the invention
Technical matters: the technical problem to be solved in the present invention provides the method that a kind of multiple-channel digital oscilloscope is realized wave-shape fluorescent display effect, make digital oscilloscope realize that multi-channel waveform fluorescence shows, thereby intactly kept the luminance level information that a plurality of passage waveforms show.
Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of multiple-channel digital oscilloscope is realized the method for wave-shape fluorescent display effect, this method is realized by programmable logic device (PLD), this programmable logic device (PLD) comprises the Wave data buffer zone, simulation video screen storer, waveform overlap-add procedure module, waveform elimination of hidden module and color conversion processing module; The length of simulation video screen storer is L, highly be W, each storage unit of simulation video screen storer is made up of two parts: intensity level m and Priority flag n, the scope of intensity level m is 0≤m≤M, wherein M is by the bit wide decision of intensity level in the simulation video screen storer, be the maximal value that the bit wide of intensity level can be represented, prioritization is: grid 〉=up-to-date passage 〉=passage 1 〉=passage 2 of opening 〉=... passage i 〉=... 〉=passage N;
This method comprises the steps:
1) initialization simulation video screen storer, the grid initialization is in simulation video screen storer, and the Priority flag that is about to simulate those pixel positions that should be grid in the video screen storer is initialized as grid priority;
2) set intensity step value a, grid brightness value b and waveform blanking number percent c; Intensity step value a scope is 0 ~ M, and grid brightness value b is the intensity of brightness number percent that grid shows, scope is 0% ~ 100%, and waveform blanking number percent c is the blanking intensity of waveform in the concealment process, and scope is 0% ~ 100%;
3) waveform signal of gathering N passage is also stored;
4) read the waveform intensity level of N passage of storage successively, carry out storing simulation video screen storer into after the overlap-add procedure according to passage priority;
5) the waveform intensity level that regularly will simulate the video screen memory stores by the color conversion processing module is converted to color value and does elimination of hidden by waveform elimination of hidden module.
Preferably, the 4th) step may further comprise the steps:
41) read current intensity step value a; If x is that current simulation video screen memory length direction coordinate axis is the position of X-axis, 0≤x≤L-1; Y is that current simulation video screen storer short transverse coordinate axis is the position of Y-axis, 0≤y≤W-1;
42) make current treatment channel i=0;
43)i＝i+1；
44) whether judge i smaller or equal to total number of channels N, if then jump to step 45); Otherwise jump to step 42);
45) judge whether current i passage is opened, if open then jump to step 46); Otherwise jump to step 43);
46) make x=0;
47) x the waveform data points p_new of read-out channel i, its numerical value is as this Y coordinate at simulation video screen storer; With x as this X coordinate at simulation video screen storer;
48) read intensity level m and the Priority flag n that simulates the former pixel p_old that stores in video screen storer [x, the y] unit;
49) if the priority of former pixel p_old is grid, the pixel intensity level m that then simulates video screen [x, y] unit is constant, Priority flag n=n_ grid; If the priority of p_new is higher than the priority of p_old, then the pixel intensity level m=a of video screen [x, y] unit, Priority flag n=n_new are simulated in order; If the priority of p_new is lower than the priority of p_old, the pixel intensity level m and the Priority flag n that then simulate video screen [x, y] unit are all constant; If the priority of p_new equals the priority of p_old, then the pixel intensity level m=m+a of video screen [x, y] unit is simulated in order, and Priority flag n is constant;
410) value with m and n is stored in [x, y] unit of simulation video screen storer again;
411) judge whether x equals L-1, if equal then jump to step 43); Otherwise jump to step 412);
412) x=x+1 and jump to step 47).
Preferably, the 5th) step comprises two independences and parallel process: the intensity level that will simulate the video screen memory stores is converted to color value and the pixel intensity in the simulation video screen storer is done elimination of hidden.
Preferably, when the intensity level of simulating the video screen memory stores is converted to color value, judge Priority flag n, if grid, then the grid brightness value b according to current setting converts intensity level m to corresponding mesh color value, otherwise intensity level m is converted to the passage color value of Priority flag n correspondence.
Preferably, pixel intensity in the simulation video screen storer is done elimination of hidden, read the intensity level m and the corresponding Priority flag n thereof of simulation video screen memory stores successively, if Priority flag shows that this point is a grid, then do not change the value of m and n, and write back in the simulation video screen storer; If it is not grid that Priority flag shows this point, make according to the waveform blanking number percent c of current setting then that m=m * (1-c), n=n writes back in the simulation video screen storer then.
Preferably, the intensity level of simulation video screen memory stores is converted to color value and the process that the pixel intensity in the simulation video screen storer is done elimination of hidden is carried out simultaneously, promptly whenever read a pixel from simulation video screen storer, after converting the pixel intensity level to color value, the pixel intensity level is carried out elimination of hidden and writes back to simulating in the video screen storer.
Preferably, in the step 2,
Intensity step value a scope is 0～M, and wherein, M is by the bit wide decision of intensity level in the simulation video screen storer, is the maximal value that the bit wide of intensity level can be represented; As a for " 0 " even expression has new data point to arrive, this intensity level m in the corresponding stored unit in simulation video screen storer does not also increase, new waveform does not promptly superpose; When a arrives for " M " expression has new data point, this intensity level m in the corresponding stored unit in simulation video screen storer increases and is M, and promptly once stack just can reach the intensity of maximum;
Grid brightness value b is the intensity of brightness number percent that grid shows, scope is 0%～100%, when b represents not show grid for " 0% "; When b is " 100% " expression maximum mesh display brightness;
Waveform blanking number percent c is the blanking intensity of waveform in the concealment process, and scope is 0%～100%; When c is stored in all the shape information zero clearing of simulating in the video screen storer for " 100% " expression single job; The strength information that keeps all to be stored in the simulation video screen storer for " 0% " expression as c is constant.
Beneficial effect: beneficial effect of the present invention is: 1. the fluorescence that adopts the present invention can carry out multi-channel waveform simultaneously shows, show the frequency situation that long-time interior signal occurs by waveform brightness, intactly keep the luminance level information that a plurality of passage waveforms show, reached the fluorescent display effect of analog oscilloscope.Big more at certain any occurrence frequency, this brightness that shows on video screen is just big more; More little at certain any occurrence frequency, this brightness that shows on video screen is just more little.
2. by regulating the intensity step value, the user can regulate the waveform brightness that shows on the video screen, when all data point occurrence frequencies all hour, the intensity step value can be transferred big, thereby the waveform highlight is shown; When all data point occurrence frequencies are all big, the intensity step value can be turned down, thereby make the waveform can be not bright excessively.So very help waveform observation.
3. by regulating waveform blanking number percent, the user can regulate the duration that waveform shows on video screen, and when waveform blanking number percent was big, the duration that waveform shows on video screen was shorter; Waveform blanking number percent hour, the duration that waveform shows on video screen is longer; When being set to " 0% ", the never blanking of expression waveform, the waveform of appearance will be presented on the video screen forever.So very help the observation of accidental signals such as burr.
4. the up-to-date passage priority of opening is made as high channel priority, and the user can open the passage of being concerned about most at last, makes this passage waveform be presented at the superiors of all waveforms, is convenient to waveform observation.
5. the priority of grid is higher than passage priority, makes grid be presented at the upper strata of all waveforms, so more helps the accurate measurement of waveform.
6. gather N channel wave graphic data simultaneously, but only handle those passages rather than the whole channel data of opening, saved the processing time that waveform shows, improved the waveform turnover rate.
Description of drawings
Fig. 1 is the process flow diagram flow chart that simulation video screen storer is stored in the stack of multi-channel waveform data point into;
Fig. 2 is a functional block diagram of the present invention;
Fig. 3 is the embodiment that the present invention is used in the four-way digital fluorescence oscilloscope;
Fig. 4 is that length is 500, highly is the synoptic diagram of 256 simulation video screen storer.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
Referring to Fig. 1, Fig. 3, multiple-channel digital oscilloscope of the present invention realizes that the method for wave-shape fluorescent display effect may further comprise the steps:
1) initialization simulation video screen storer is inserted gridding information;
2) set intensity step value a, grid brightness value b and waveform blanking number percent c;
3) waveform signal of gathering N passage is also stored;
4) read the waveform data points of N passage of storage successively, carry out storing simulation video screen storer into after the overlap-add procedure according to passage priority;
5) the waveform intensity level that regularly will simulate the video screen memory stores is converted to color value and does elimination of hidden.
Wherein the 4th) step " reads the waveform data points of N passage of storage successively, simulates the video screen storer according to storing into after the passage priority overlap-add procedure " and may further comprise the steps:
41) read current intensity step value a;
42) x is the position of current simulation video screen memory length direction coordinate axis (X-axis), and x (0≤x≤L-1);
43) y is the position of current simulation video screen storer short transverse coordinate axis (Y-axis), and y (0≤y≤W-1);
44) make current treatment channel i=0;
45)i＝i+1；
46) whether judge i smaller or equal to total number of channels N, if then jump to step 47); Otherwise jump to step 44);
47) judge whether current i passage is opened, if open then jump to step 48); Otherwise jump to step 45);
48) make x=0;
49) x the waveform data points p_new of read-out channel i, its numerical value is as this Y coordinate at simulation video screen storer;
410) with x as this X coordinate at simulation video screen storer;
411) read intensity level m and the Priority flag n that simulates the former pixel p_old that stores in video screen storer [x, the y] unit;
412) if the priority of former pixel p_old is grid, the pixel intensity level m that then simulates video screen [x, y] unit is constant, Priority flag n=n_ grid; If the priority of p_new is higher than the priority of p_old, then the pixel intensity level m=a of video screen [x, y] unit, Priority flag n=n_new are simulated in order; If the priority of p_new is lower than the priority of p_old, the pixel intensity level m and the Priority flag n that then simulate video screen [x, y] unit are all constant; If the priority of p_new equals the priority of p_old, then the pixel intensity level m=m+a of video screen [x, y] unit is simulated in order, and Priority flag n is constant;
413) value with m and n is stored in [x, y] unit of simulation video screen storer again;
414) judge whether x equals L-1, if equal then jump to step 45); Otherwise jump to step 415);
415) x=x+1 and jump to step 49).
Wherein the 5th) in the step " intensity level that regularly will simulate the video screen memory stores is converted to color value and does elimination of hidden ", comprise two independences and parallel process: the intensity level that will simulate the video screen memory stores is converted to color value and the pixel intensity of simulating in the video screen storer is done elimination of hidden.
When the intensity level of simulating the video screen memory stores is converted to color value, judge Priority flag n, if grid, then the grid brightness value b according to current setting converts intensity level m to corresponding mesh color value, otherwise intensity level m is converted to the passage color value of Priority flag n correspondence.Each passage adopts a kind of color to show, the different brightness of this color reflect the occurrence frequency of this each point of passage waveform, the frequency that the high expression of brightness signal occurs in this position is big, the frequency that the low expression of brightness signal occurs in this position is little, thereby reaches the fluorescent display effect of analog oscilloscope.
Pixel intensity in the simulation video screen storer is done elimination of hidden, be intensity level m and the corresponding Priority flag n thereof that reads simulation video screen memory stores successively, if Priority flag shows that this point is a grid, then do not change the value of m and n and write back to and simulate in the video screen storer; If it is not grid that Priority flag shows this point, make according to the waveform blanking number percent c of current setting then that m=m * (1-c), n=n also writes back in the simulation video screen storer.
The intensity level of simulation video screen memory stores is converted to color value and the process that the pixel intensity in the simulation video screen storer is done elimination of hidden is carried out simultaneously, promptly whenever read a cell data from simulation video screen storer, after converting intensity level to color value, intensity level is carried out elimination of hidden and writes back to simulating in the video screen storer.
Described simulation video screen storer is the storer of a L * W unit, and can regard a length as is L, highly is the two-dimensional storage array of W, and the span of height W should be identical with the span of waveform data points; Each storage unit is made up of two parts: intensity level m (0≤m≤M) and Priority flag n; Prioritization is: grid 〉=up-to-date passage 〉=passage 1 〉=passage 2 of opening 〉=... passage i 〉=... 〉=passage N.
Described intensity step value a scope is 0～M, and M is by the bit wide decision of intensity level in the simulation video screen storer, is the maximal value that the bit wide of intensity level can be represented; Even expression has new data point to arrive, this intensity level m in the corresponding stored unit in simulation video screen storer does not increase " 0 " yet, and new waveform does not promptly superpose; " M " expression has new data point to arrive, and it is M that this intensity level m in the corresponding stored unit in simulation video screen storer increases, and promptly once stack just can reach maximum intensity.
Described grid brightness number percent b is the intensity of brightness number percent that grid shows, scope is 0%～100%, and " 0% " represents not show grid; " 100% " expression maximum mesh display brightness.
Described waveform blanking number percent c is the blanking intensity of waveform in the concealment process, and scope is 0%～100%, and " 100% " expression single job is stored in the shape information zero clearing of simulating in the video screen storer with all; The strength information that " 0% " expression keeps all to be stored in the simulation video screen storer is constant.
Above-mentioned multiple-channel digital oscilloscope realizes that the specific implementation process of wave-shape fluorescent display effect method is as follows: gather the Wave data of N passage at first simultaneously and be stored in N the data buffer area, the waveform data points of reading afterwards in first channel data buffer area is handled, and the intensity level that obtains is stored in the corresponding unit of simulation video screen storer.Read second waveform data points in the channel data buffer area afterwards again, carry out overlap-add procedure, and the intensity level that obtains is stored in the corresponding unit of simulation video screen storer according to the priority of data point.By that analogy, the waveform data points in N channel data buffer area all superposes and stores in the simulation video screen storer.If certain passage is not opened during this period, then skip this passage and do not handle.
Repeat above process, and, all unit informations that stack before is stored in the simulation video screen storer are read, form a frame waveform image through color conversion and send display to show every one period set time; All unit informations in the simulation video screen storer that will read are simultaneously carried out elimination of hidden, write back simulation video screen storer again.
Accompanying drawing 3 is one embodiment of the present of invention.
Present embodiment has realized that the waveform fluorescence of four-way digital oscilloscope shows.In the present embodiment, employing analog to digital converter ADC passes through the analog signal sampling of conditioning to four the tunnel and sends in the field programmable gate array (FPGA); Inner integrated four road Wave data buffer zones of FPGA, parts such as simulation video screen storer, waveform overlap-add procedure module, waveform elimination of hidden module and color conversion processing module, finishing the fluorescence of four road waveforms handles, and form a frame waveform image at regular intervals and export to display, carry out elimination of hidden simultaneously one time; Display will show from the waveform image that FPGA reads; ARM mainly sends intensity step value, control commands such as grid brightness value and waveform blanking number percent to FPGA.
In the present embodiment, adopt ADC chip---the AT84AD004B of two 500M of two Atmel companies, the every integrated two-way ADC in inside, the high sampling rate of every road ADC reaches 500MSPS, resolution is 8bit, the scope of sampling back data is [0,255], can satisfy the requirement of sampling precision and sampling rate; FPGA adopts the SX35FF668-12 in the Xilinx Virtex-4 of the company series, and it includes a large amount of storage unit, can make Wave data buffer zone and simulation video screen storer be integrated in the chip simultaneously; Master cpu adopts ARM9 chip---the S3 C 2410 of Samsung.
The course of work of present embodiment is as follows: at first the video screen storer is simulated in initialization, inserts gridding information, and the Priority flag that is about to simulate those pixel positions that should be grid in the video screen storer is initialized as grid priority.As shown in Figure 4, it is 500 that this simulation video screen storer can be regarded a length L as, and height W is 256 two-dimensional storage array, and wherein the unit of black represents that this unit is the grid image vegetarian refreshments.ARM reads the intensity step value that the user is provided with afterwards, control commands such as grid brightness value and waveform blanking number percent, and send to FPGA.Four tunnel simulating signals of outside input will be adjusted to the amplitude of this four tunnel simulating signal in the amplitude range that is fit to the ADC sampling respectively through a signal conditioning circuit.Four road ADC will sample to the waveform of four passages simultaneously afterwards, obtain sampled data and send FPGA buffer memory.Being provided with four tunnel degree of depth at the front end of FPGA is 500 Wave data buffer zone, and the Wave data of sending among the FPGA will at first be stored in these four data buffer areas.During processing, at first first passage is handled.The individual data of x (0≤x≤499) in read-out channel one data buffer area, its numerical value y (0≤y≤255) is as this coordinate in simulation video screen storer short transverse.Read pixel intensity value and Priority flag in simulation video screen storer [x, the y] unit again,, pixel intensity value and the Priority flag that newly obtains write back in simulation video screen storer [x, the y] unit through after the treatment conversion.Next data in read-out channel one data buffer area are carried out similar processing afterwards, after last data (x=499) dispose in passage one data buffer area, begin to handle second data in the channel data buffer area again.By that analogy, the Wave data up to four passages all disposes.During this period, if certain passage is not opened, then skip this passage and do not handle.Four road ADC carry out new round sampling and are stored into four data buffer areas among the FPGA the input waveform signal afterwards, the processing of a beginning new round.
Repeat above process, and, all unit informations that stack before is stored in the simulation video screen storer are read, form a frame waveform image through color conversion and send display to show every one period set time; All unit informations in the simulation video screen storer that will read are simultaneously carried out elimination of hidden, write back simulation video screen storer again.
Claims (7)
1, a kind of multiple-channel digital oscilloscope is realized the method for wave-shape fluorescent display effect, it is characterized in that this method is realized by programmable logic device (PLD), this programmable logic device (PLD) comprises the Wave data buffer zone, simulation video screen storer, waveform overlap-add procedure module, waveform elimination of hidden module and color conversion processing module; The length of simulation video screen storer is L, highly be W, each storage unit of simulation video screen storer is made up of two parts: intensity level m and Priority flag n, the scope of intensity level m is 0≤m≤M, wherein M is by the bit wide decision of intensity level in the simulation video screen storer, be the maximal value that the bit wide of intensity level can be represented, prioritization is: grid 〉=up-to-date passage 〉=passage 1 〉=passage 2 of opening 〉=... passage i 〉=... 〉=passage N;
This method comprises the steps:
1) initialization simulation video screen storer, the grid initialization is in simulation video screen storer, and the Priority flag that is about to simulate those pixel positions that should be grid in the video screen storer is initialized as grid priority;
2) set intensity step value a, grid brightness value b and waveform blanking number percent c; Intensity step value a scope is 0 ~ M, and grid brightness value b is the intensity of brightness number percent that grid shows, scope is 0% ~ 100%, and waveform blanking number percent c is the blanking intensity of waveform in the concealment process, and scope is 0% ~ 100%;
3) waveform signal of gathering N passage is also stored;
4) read the waveform intensity level of N passage of storage successively, carry out storing simulation video screen storer into after the overlap-add procedure according to passage priority;
5) the waveform intensity level that regularly will simulate the video screen memory stores by the color conversion processing module is converted to color value and does elimination of hidden by waveform elimination of hidden module.
2, multiple-channel digital oscilloscope according to claim 1 is realized the method for wave-shape fluorescent display effect, it is characterized in that the 4th) step may further comprise the steps:
41) read current intensity step value a; If x is that current simulation video screen memory length direction coordinate axis is the position of X-axis, 0≤x≤L-1; Y is that current simulation video screen storer short transverse coordinate axis is the position of Y-axis, 0≤y≤W-1;
42) make current treatment channel i=0;
43)i＝i+1；
44) whether judge i smaller or equal to total number of channels N, if then jump to step 45); Otherwise jump to step 42);
45) judge whether current i passage is opened, if open then jump to step 46); Otherwise jump to step 43);
46) make x=0;
47) x the waveform data points p_new of read-out channel i, its numerical value is as this Y coordinate at simulation video screen storer; With x as this X coordinate at simulation video screen storer;
48) read intensity level m and the Priority flag n that simulates the former pixel p_old that stores in video screen storer [x, the y] unit;
49) if the priority of former pixel p_old is grid, the pixel intensity level m that then simulates video screen [x, y] unit is constant, Priority flag n=n_ grid; If the priority of p_new is higher than the priority of p_old, then the pixel intensity level m=a of video screen [x, y] unit, Priority flag n=n_new are simulated in order; If the priority of p_new is lower than the priority of p_old, the pixel intensity level m and the Priority flag n that then simulate video screen [x, y] unit are all constant; If the priority of p_new equals the priority of p_old, then the pixel intensity level m=m+a of video screen [x, y] unit is simulated in order, and Priority flag n is constant;
410) value with m and n is stored in [x, y] unit of simulation video screen storer again;
411) judge whether x equals L-1, if equal then jump to step 43); Otherwise jump to step 412);
412) x=x+1 and jump to step 47).
3, multiple-channel digital oscilloscope according to claim 1 is realized the method for wave-shape fluorescent display effect, it is characterized in that the 5th) step comprises two independences and parallel process: the intensity level that will simulate the video screen memory stores is converted to color value and the pixel intensity of simulating in the video screen storer is done elimination of hidden.
4, multiple-channel digital oscilloscope according to claim 3 is realized the method for wave-shape fluorescent display effect, it is characterized in that, when the intensity level of simulating the video screen memory stores is converted to color value, judge Priority flag n, if grid, then the grid brightness value b according to current setting converts intensity level m to corresponding mesh color value, otherwise intensity level m is converted to the passage color value of Priority flag n correspondence.
5, multiple-channel digital oscilloscope according to claim 3 is realized the method for wave-shape fluorescent display effect, it is characterized in that described pixel intensity in the simulation video screen storer being done elimination of hidden, be intensity level m and the corresponding Priority flag n thereof that reads simulation video screen memory stores successively, if Priority flag shows that this point is a grid, then do not change the value of m and n, and write back in the simulation video screen storer; If it is not grid that Priority flag shows this point, make according to the waveform blanking number percent c of current setting then that m=m * (1-c), n=n writes back in the simulation video screen storer then.
6, multiple-channel digital oscilloscope according to claim 3 is realized the method for wave-shape fluorescent display effect, it is characterized in that, the intensity level of simulation video screen memory stores is converted to color value and the process that the pixel intensity in the simulation video screen storer is done elimination of hidden is carried out simultaneously, promptly whenever read a pixel from simulation video screen storer, after converting the pixel intensity level to color value, the pixel intensity level is carried out elimination of hidden and writes back to simulating in the video screen storer.
7, multiple-channel digital oscilloscope according to claim 1 is realized the method for wave-shape fluorescent display effect, it is characterized in that step 2) in,
Intensity step value a scope is 0 ~ M, and wherein, M is by the bit wide decision of intensity level in the simulation video screen storer, is the maximal value that the bit wide of intensity level can be represented; As a for " 0 " even expression has new data point to arrive, this intensity level m in the corresponding stored unit in simulation video screen storer does not also increase, new waveform does not promptly superpose; When a arrives for " M " expression has new data point, this intensity level m in the corresponding stored unit in simulation video screen storer increases and is M, and promptly once stack just can reach the intensity of maximum;
Grid brightness value b is the intensity of brightness number percent that grid shows, scope is 0% ~ 100%, when b represents not show grid for " 0% "; When b is " 100% " expression maximum mesh display brightness;
Waveform blanking number percent c is the blanking intensity of waveform in the concealment process, and scope is 0% ~ 100%; When c is stored in all the shape information zero clearing of simulating in the video screen storer for " 100% " expression single job; The strength information that keeps all to be stored in the simulation video screen storer for " 0% " expression as c is constant.
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