JP2002323524A - Network analyzer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a network analyzer having a key input means enabling a user to change and set conveniently in key operation for setting and changing a parameter of a matrix form. SOLUTION: In this network analyzer, the matrix position of a parameter of a matrix form is designated by one or more designated subscripts of two or more digits showing a matrix, and according to the designation, the concerned data is displayed on a screen. The network analyzer inputs a numerical value corresponding to one or more designated subscripts by a ten-key when the subscript is the numerical value, and displays the data corresponding to the parameter of the matrix form on a screen according to the input of a designated determination key after ten-key input.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit network analyzing apparatus having a function of displaying corresponding data or the like based on designation of parameters in a matrix form. In particular, the present invention relates to a circuit network analysis device including key input means that allows a user to change the setting of parameters in a matrix form with good convenience.

[0002]

2. Description of the Related Art As is well known, a network analyzer, which is an example of a circuit analysis apparatus, applies a frequency signal of a desired span to an arbitrary port and outputs a device under test based on a transmission signal and a reflection signal at each port. (DUT) frequency characteristics can be measured. Since the network analyzer is well-known and well-known in the art, a detailed description thereof will be omitted.

FIG. 1A shows a connection example in which a DUT having four ports is connected to a network analyzer for measurement. This network analyzer is an example having four ports Port1 to Port4. The key switches on the operation panel include soft keys, numeric keys, other keys, data knobs, and the like. The numeric keypad is a key switch for inputting numerical values such as a frequency setting, and includes “0 to 9” and others. The soft key allows the function of the switch to be changed in a software manner according to the status of use.
Key switches, which are arranged adjacent to the soft menu screen on the right side of the screen. The soft menu screen is a menu screen that clearly indicates a soft execution function provided by dividing the screen into eight corresponding to the eight soft keys.
The content of the notation changes at any time according to the purpose of use. For this reason, after visually confirming the contents of the notation, the user is required to perform a visual procedure of pressing the corresponding soft key.

[0004] In the 2-digit suffix numbers in the matrix representation of S-parameters of 4 rows and 4 columns shown in FIG. 1 (b), front numerical values 1, 2, 3, and 4 are numbers of response ports (Respons Port). Yes, the rear numbers 1, 2, 3, and 4 are signal application ports (Stimulus Po
rt). Therefore, as shown in the S parameter matrix of FIG. 1B, a frequency signal is applied from one of the four ports, and the combination of the response characteristics of the four ports responding to the application is 16 parameters.

[0005] Normally, in a screen display mode for evaluating the frequency characteristic, by selecting and specifying a desired parameter from among the above 16 parameters using a key switch, the frequency characteristic of the corresponding parameter is displayed on the screen.

Next, a specific example of a key operation procedure for switching the display of the S parameter will be described with reference to FIG.
In this example, it is assumed that the S parameter currently being displayed is “S11” (see FIG. 2A) and is switched to “S34” (see FIG. 2B). Here, as shown in FIG. 2B, among the eight soft keys, the soft key 8 is assigned as a key for switching the designation of two ports to be paired at the time of measurement. It is assumed that 4 is assigned as a key for switching between designation of an application port and a response port. Initially, the S parameter “S11:
The frequency characteristic of “P1-P2” is displayed on the data display screen of FIG. At this time, the measurer operates the soft key 8 to change the soft menu to “P3-P4” in order to display the S parameter “S34”. FIG.
In (c), first, the measurer makes the first soft key 8
Pressing will display the eight soft menus as "S11 / S21
・ S12 ・ S22: P1-P3 ”. As a result, the frequency characteristic of the S parameter “S11: P1-P3” is displayed. This display is a useless display other than the purpose. The measurer visually checks the changed display “P1-P3” of the soft menu 8, and
It is checked whether it is a software menu "P3-P4" for measuring a target S parameter, and since it does not correspond, the soft key 8 is pressed again.

Second, when the measurer presses the soft key 8 again, the soft menu is displayed as "S11 / S41 / S14 / S4".
4: P1-P4 ". At the same time, the S parameter “S11:
The frequency characteristics of "P1-P4" are displayed. This display is also useless data display outside the purpose. Thereafter, the measurer presses the soft key 8 several times, and the soft menu 8
Is operated so that the display of “P3-P4”.

Fourth, after visually confirming that the display of the soft menu 8 is "P3-P4", the measurer confirms that the soft key 2 is the desired S parameter "S34". , The corresponding soft key 2 is pressed. As a result, the desired transmission characteristic of the S parameter "S34" is displayed.

According to the above description, in the conventional key operation procedure for changing the setting of the matrix form such as the S parameter, the notation contents of the soft menu are sequentially visually checked until the target parameter setting is reached. There is a disadvantage that an operation procedure for performing key operation is required. In the above specific example, it is necessary to visually confirm all six routes for the two ports that are paired at the time of measurement as the contents of each menu of the soft keys. This visual confirmation is an unintended confirmation work, and is not preferable from the viewpoint of convenience. Further, unnecessary data other than the purpose is displayed every time the key is operated, which is not preferable in this respect.

[0010] In addition, in a display mode in which any two or more of the 16 types of S-parameters are displayed in a superimposed manner, or in a case where data obtained by performing arithmetic processing between parameters by addition, subtraction, multiplication, division, or the like is displayed as data. Since it is necessary to repeat the same key operation procedures and visual confirmations as above,
Not preferred.

[0011]

As described above, in the prior art, as shown in the example of changing the S parameter in the two-digit subscript matrix, the key operation for changing the matrix configuration is performed by the soft menu. The contents of the display change rapidly. The conventional operation procedure of setting a target parameter while visually confirming this change sequentially causes embarrassment to a measurer. Therefore, there is a practical difficulty in convenience of key operation. In the case of S-parameter measurement of more than four ports and five ports, it is necessary to specify any one of 25 parameters.
Since it is necessary to specify any of the parameters, more complicated operation procedures are generated. In addition, it is not preferable that unnecessary data display other than the purpose is sequentially displayed on the screen at an intermediate stage every time the key is operated. Accordingly, an object of the present invention is to provide a circuit network analysis device including key input means that allows a user to change settings in a convenient manner in a key operation for setting and changing parameters in a matrix form.

[0012]

A first solution will be described.
FIG. 3 shows a solution according to the present invention.
In order to solve the above-mentioned problem, in a circuit network analysis device, a matrix position of a parameter in a matrix form is designated by a predetermined plurality of suffixes of two or more digits indicating a matrix, and corresponding data is displayed on a screen based on the designation. , When the subscript is a numeric value,
Numerical values corresponding to a plurality of predetermined subscripts are entered using numeric keys (0 to 9).
A circuit for inputting a subscript with a numeric key) and displaying data corresponding to parameters in matrix form on a screen based on an input of a predetermined confirmation key (for example, an x1 key) after the input of the numeric keypad. It is an analyzer. According to the above-described invention, a network analyzer including key input means that allows a user to change settings in a convenient manner in key operation for changing parameters in a matrix, such as changing S parameters, can be realized.

Next, a second solution will be described. Where the fourth
The figure shows the solution according to the invention. Assuming that the number of a predetermined plurality of subscripts for displaying the data of one parameter is two, a numerical value of this integral multiple (for example, 4, 6) is input by using the numeric keypad, and There is the above-mentioned circuit network analyzer, which displays data of the following parameters. As a result, it is possible to conveniently display, in a data form, a display mode in which any two or more types are superimposed and displayed, or a result of arithmetic processing between parameters by addition, subtraction, multiplication, division, or the like.

Next, a third solution will be described. In the numerical value input stage using the numeric keypad, the current data display content on the screen is retained, and after inputting a predetermined confirmation key,
There is the above-mentioned circuit network analysis device, which updates a data display corresponding to designation of a matrix-form parameter based on a numeric keypad. This provides an advantage that unnecessary displays other than the purpose can be eliminated in the middle of the ten key operation.

Next, a fourth solution will be described. Where the sixth
Figures and 7 show the solution according to the invention. In order to solve the above-mentioned problem, in a circuit network analysis device, a matrix position of a parameter in a matrix form is designated by a predetermined plurality of suffixes of two or more digits indicating a matrix, and corresponding data is displayed on a screen based on the designation. A software menu which is a menu screen for displaying a next software execution function on a screen display corresponding to the plurality of predetermined soft keys capable of changing a function of a switch in a software manner according to a use situation; Is provided, the predetermined plurality of soft keys are divided into two groups, and the first group of divided soft keys is assigned as a key for designating one subscript in a matrix of parameters in a matrix form, The soft keys of the group are assigned as keys for designating the other subscript in the matrix of parameters in matrix form, and the soft keys of the first group and the soft keys of the second group are assigned. Based on the key input, specifies the subscript parameters of the matrix form, the screen displays the data corresponding to the specified parameters, it is the network analyzer according to claim.

Next, a fifth solution will be described. As one mode of the matrix for indicating the parameters of the matrix form and displaying the corresponding data on the screen, the matrix is applied to S parameters for measuring the frequency characteristics of a plurality of ports of a device under test (DUT). There is a network analyzer.

Next, a sixth solution will be described. In a circuit network analyzer equipped with the above-mentioned keyboard, there is the above-mentioned circuit network analyzer characterized in that a predetermined key on a keyboard is allocated and applied instead of the numeric keypad or the soft key.

Next, a seventh solution will be described. The above-mentioned circuit network analyzer is characterized in that the number of ports for measurement provided in the above-mentioned circuit network analyzer is applied to three or more ports.

Next, an eighth solution will be described. As one mode of the above-described circuit network analysis apparatus, there is provided a network analyzer which has at least the number of ports corresponding to the matrix form and measures a frequency characteristic of a device under test (DUT) based on a transmission signal and a reflection signal at each port. There is the above-described circuit network analyzer.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION

FIGS. 3, 4, 5, and 6 illustrate the present invention.
This will be described below with reference to FIGS. The description of the same parts as those in the related art will be omitted.

In the key operation of the present invention, as shown in FIG. 3A, ten keys (0 to 9) and a decision key (x1) are used instead of the soft keys. The confirmation key at this time is a key for instructing data input of the S parameter.

As shown in FIG. 3B, as in the conventional case,
The S parameter currently displayed is "S11" (see Fig. 3A)
The key operation procedure will be described with a specific example in which this is switched to "S34" (see FIG. 3B) and displayed.

As shown in FIG. 3C, the key operation procedure is to use a numeric keypad to select "3" corresponding to the subscript "S34",
After pressing "4", press the enter key (x1). As a result, the S parameter "S11" currently being displayed is immediately switched to the frequency characteristic of the target S parameter "S34" and displayed. The data of the previous S parameter "S11" is displayed until immediately before the enter key is pressed. Because of this,
Unnecessary display beyond purpose is not generated in the middle of key operation as in the related art.

According to the above-mentioned key operation procedure, there is obtained an advantage that the necessity of visually confirming the display of the software menu is eliminated. Further, there is obtained an advantage that unnecessary display other than the purpose can be eliminated. Further, there is an advantage that the number of key operations can be reduced. Therefore, it is possible to realize parameter change which is ergonomically clear and convenient.

Next, as shown in the data display of FIG. 4A, a key operation procedure of the present invention applied to a display mode in which two kinds of S parameters "S42" and "S24" are displayed in a superimposed manner will be described. . The key operation procedure is as shown in FIG. 4C, after pressing "4", "2", "2", "4" corresponding to the subscripts of "S42" and "S24" with ten keys, Press the confirmation key (x1). As a result, two types of designated S parameters “S42” and “S2” are displayed from the current data display state.
4) is instantaneously switched to the superimposed display. In this case, the previous data display state is maintained until immediately before the enter key is pressed. For this reason, there is no needless display that is not intended in the middle of key operation as in the related art.

Further, as described above, the same applies to a case where three types of S-parameters "S42", "S24", and "S21" are to be superimposed and displayed.
After pressing "2", "2", "4", "2", "1",
By pressing the enter key (x1), switching can be easily performed. Therefore, it is possible to realize parameter change which is ergonomically clear and convenient.

Further, from the superimposed display state of the two types of S-parameters shown in FIG.
Also when switching to the type of S parameter display state, after pressing the numeric keypad “3” or “4”, the enter key (x1)
You can switch instantly by pressing. Therefore, it is possible to realize parameter change which is ergonomically clear and convenient. According to the above key operation procedure,
Regardless of the display state of the previous S parameter including the superimposed display, a great advantage is obtained in that the display can be instantaneously switched to the desired number of displayed S parameters. Further, there is an advantage that the number of key operations can be significantly reduced.

Next, a differential transmission type device (DUT) shown in FIG. 5A is a specific example in which two differential ports are P1 and P2. Each port considers two positive and negative lines as a pair of transmission lines. As an example of a corresponding expression, there is a matrix display of the mixed mode S parameter in FIG. The number of all parameters is 16. In this expression, for example, “Sdc21” is port 1
The common mode signal input from (P1) is
(P2) means the amount output in the differential mode. The first subscript in the four subscripts indicates the mode output, the second subscript indicates the mode input, the third subscript indicates the port number of the output, and the fourth subscript indicates the input. Indicates the port number. Here, the meaning of the matrix element of the “Sdd” term means differential mode input (reverse phase mode application) and the output of differential mode (reverse phase mode response), and the matrix element of the “Sdc” term is common mode input. (In-phase mode applied) means differential mode output, and the matrix element of the “Scc” term is common mode input and means common mode output (common mode response).

Next, as shown in FIG. 6, a key operation procedure using soft keys will be described. This is a key operation procedure when eight soft keys are applied to the mixed mode S parameter of FIG. Soft keys 1 to 4 shown in FIG. 6A include four types of mode keys “Sdd, Sdc, S”.
cd · Scc ”, and the corresponding soft menu display is displayed in a fixed state as shown in FIG. The soft keys 5 to 8 shown in FIG. 6B are assigned as four types of port keys "11, 21, 12, 22", and the corresponding soft menu display is a menu display in a fixed state shown in FIG. Initially, it is assumed that the frequency characteristics of the mixed mode S parameter “Sdc21” are displayed on the data display screen. At this time, the display of the software menu display “Sdc” and “21” shows the selected state by highlighting the entire display section.

In the data display state, the key operation procedure for switching to the mix mode S parameter "Scd22" is to press the soft keys "3" and "8" in any order as shown in FIG. You can switch between them. At this time, the soft menu display corresponding to the pressed soft key is displayed in reverse video to indicate that switching has been performed, and the description content of the soft menu is unchanged.

Therefore, according to this, there is obtained an advantage that the switching can be completed by first two key actions. Further, the notation of the soft menu itself is reversed but not changed, and the confusion of visually confirming the changing notation of the soft menu as in the related art can be eliminated.

It should be noted that the technical idea of the present invention is not limited to the specific configuration examples and connection examples of the above embodiment. Furthermore, based on the technical idea of the present invention, the above-described embodiment may be appropriately modified and widely applied. For example, in FIG. 3 described above, a specific example in which two subscripts of the S parameter are input using the numeric keypad, but eight soft keys may be allocated as shown in FIG. 7 if desired. That is, the soft keys 1 to 4 are assigned so as to designate the first subscript of the S parameter, and the soft keys 5 to 8 are assigned so as to designate the second subscript of the S parameter. As a result, it is possible to switch to the target S parameter data display with two key operations. In this case, although unnecessary data display is displayed once during the key operation, practical convenience is improved.

In the case of a network analyzer having a keyboard externally provided as an option, a ten-key on a keyboard may be assigned instead of the ten-key shown in FIG.

In the above-described embodiment, a specific example applied to switching of the display of the S parameter has been described. However, even in the case of changing the setting of a parameter in another matrix form, it is necessary to correspond to the subscript of the matrix. , Ten keys and soft keys are assigned, the same convenience as described above and the elimination of unnecessary data display can be obtained.

[0036]

According to the present invention, the following effects can be obtained from the above description. As described above, according to the present invention, when a matrix position is indicated by a suffix of two or more digits, or when a plurality of data displays are superimposed and displayed, setting change to a desired parameter is performed by By providing key input means for directly inputting a key switch corresponding to a subscript, a user can intuitively input a desired parameter by key. As a result, there is obtained an advantage that it is possible to eliminate the embarrassment of displaying unnecessary data display on purpose on the screen each time a key operation is performed, or to visually confirm the description contents of a soft menu that changes each time a key operation is performed as in the related art. This has the advantage that the convenience for the user is greatly improved.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a connection configuration in which a DUT having four ports is connected to a network analyzer to measure frequency characteristics, and suffixes of an S parameter matrix.

FIG. 2 is a view for explaining a conventional key operation procedure for switching display of an S parameter using soft keys.

FIG. 3 is an exemplary view for explaining a key operation procedure for switching display of an S parameter using a numeric keypad according to the present invention.

FIG. 4 is a view for explaining a key operation procedure when two types of S parameters “S42” and “S24” are superimposed and displayed according to the present invention.

FIG. 5 is a view for explaining a matrix display in a mixed mode S parameter example in the case of a differential transmission type device.

FIG. 6 is a diagram illustrating a key operation procedure when eight soft keys are applied to a mixed mode S parameter according to the present invention.

FIG. 7 shows a 4 × 4 matrix parameter of the present invention.
The figure which shows the example of description which assigns eight soft keys instead of a numeric keypad, and the description content of a soft menu is unchanged.

[Explanation of symbols]

 1-8 Soft key 0-9 Numeric keypad DUT Device under test

Continued on the front page F-term (reference) 2G028 AA02 CG20 CG22 MS00 5B020 AA01 FF17

Claims (8)

[Claims] 1. A circuit network analysis apparatus for designating a matrix position of a parameter in a matrix form using a plurality of predetermined suffixes of two or more digits indicating a matrix and displaying corresponding data on a screen based on the designation. When the character is a numerical value, a numerical value corresponding to a plurality of predetermined subscripts is input by a numeric keypad, and based on an input of a predetermined confirmation key after the input of the numeric keypad, data corresponding to a parameter in a matrix form is displayed on a screen. A network analysis device for displaying. 2. When the number of a predetermined plurality of subscripts for displaying data of one parameter is two, a numerical value that is an integral multiple of this number is input using the numeric keypad, and a plurality of parameters in a matrix form parameter are input. To display the data of
The circuit network analyzer according to claim 1, wherein: 3. The data display contents on the current screen are maintained in the numerical input stage using the numeric keypad, and after the input of a predetermined confirmation key, the data display corresponding to the designation of a matrix-type parameter based on the numeric keypad is updated. The circuit network analysis device according to claim 1, wherein: 4. A circuit analysis device which indicates a matrix position of a parameter in a matrix form by using a plurality of suffixes of two or more digits indicating a matrix and displays corresponding data on a screen based on the designation. When there are a plurality of predetermined soft keys that can change the function of the switch in a software manner according to, and a soft menu that is a menu screen that specifies the next soft execution function on the screen display corresponding to the soft keys The predetermined plurality of soft keys are divided into two groups, and the first group of divided soft keys is assigned as keys for designating one subscript in a matrix of parameters in a matrix form, and the divided second group of soft keys is assigned. A key is assigned as a key for designating the other subscript in the matrix of parameters in the form of a matrix, based on key inputs of the first group of soft keys and the second group of soft keys. , Specify the subscript of the parameter in matrix form,
A circuit network analysis device for displaying data corresponding to a designated parameter on a screen. 5. A matrix for designating parameters in a matrix form and displaying corresponding data on a screen is applied to S parameters for measuring frequency characteristics of a plurality of ports of a device under test. Or the circuit network analyzer according to 4. 6. The circuit network according to claim 1, wherein a predetermined key on the keyboard is assigned and applied in place of the numeric keypad or the soft key in a circuit network analyzer equipped with a keyboard. Analysis device. 7. The circuit network analysis device according to claim 1, wherein the number of measurement ports provided in the circuit network analysis device is applied to three or more ports. 8. A circuit network analyzer comprising at least the number of ports corresponding to the matrix form, and a device under test (DUT) based on a transmission signal and a reflection signal at each port.
The network analyzer according to any one of claims 1 to 7, wherein the network analyzer is a network analyzer that measures a frequency characteristic of the circuit.