JPH0774812A - Characteristic inspecting device of telephone terminal device - Google Patents

Abstract

PURPOSE:To provide the device which automatically and correctly test, measure, and inspect characteristics of the telephone terminal equipment through extremely easy operation in a short time according to a determined procedure on the basis of determined standards and automatically list and plot the results. CONSTITUTION:This device consists of a display device 1, an input device 2, a memory device 4, output devices 5 and 6, a processor 7, a measuring instrument group 8 such as a spectral analyzer, an FFT analyzing device, a synthesizer, a multimeter, a storage scope, and a noise measuring instrument, a measuring network 11 which is connected to the input and output terminals 16-1 and 16-2 of a telephone terminal device 16, a switching device 9 for the measuring network 11, a controller 15 for the switching device 9, a variable constant voltage and constant current power unit 18 which supplies electric power to the telephone terminal device 16, a test tone generating device 19, and an electromagnetic field detecting device 20. Further, the measuring network 11 consists of plural resistors, coils, capacitors, a switching and connecting devices for them, and a controller for the switching and connecting device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone terminal device connected to a telephone line as a public facility, such as a telephone, a wireless telephone, a facsimile, a personal computer or a modem for connecting a word processor to the telephone line. Has a certain standard FCC part 68, DOC
The present invention relates to an automatic measurement / inspection device for measuring whether or not it conforms to CS-03 and displaying and printing the result as a table or a figure.

[0002]

2. Description of the Related Art Based on measurement / inspection standards defined by FCC and DOC, a plurality of items such as internal signal power measurement and DTMF signal measurement in FCC are specified in a test telephone terminal device for each measurement item. Output network,
By connecting the specified measuring instruments, performing complicated measurement work according to the specified procedure, and plotting the results by handwriting.

[0003]

In the conventional measurement and inspection method, there are problems that the measurement and inspection require a great deal of labor and time, and that errors are made.

There is also a problem that it takes a lot of time to master these operations.

The present invention automatically and accurately conducts a test measurement of the characteristics of a telephone terminal device in a short time based on a prescribed standard and in accordance with a prescribed procedure with an extremely simple operation, and produces a result. The purpose of the present invention is to provide a device for making a motion chart.

[0006]

In order to achieve the above object, in the characteristic inspection device of the present invention, at least the characteristic of the telephone terminal device is FCC part 68 or DOC CS-0.
It is a device for automatically testing, measuring, and inspecting whether or not it conforms to a plurality of types of standards, including 3, and includes a display device, an input device, a memory device, an output device, a processing device, a spectral analyzer, and an FFT analysis device. , Measuring instruments such as synthesizers, multimeters, storage scopes, noise measuring instruments, etc., measuring circuit networks connected to input and output terminals of telephone terminal devices, switching devices for the measuring circuit networks, control devices for the switching devices, and telephones It is composed of a variable constant-voltage constant-current power supply device for supplying power to the terminal device, a test sound generation device, and an electromagnetic field detection device.

The measuring circuit network is composed of a plurality of resistors, coils, capacitors and their switching connection devices, and a control device for the switching connection devices.

The display device displays at least an operation procedure of the characteristic inspection device and a table and a diagram of the measurement inspection result, and the input device is, for example, a keyboard device, and the name, date and time of the test measurement inspection, and the temperature. Enter environmental conditions such as humidity, test numbers, and operation instructions.
The memory device includes a master file that stores the operation procedure, display procedure, and measurement data processing procedure of the characteristic inspection apparatus, and a data file that records the measurement data. A device for printing an inspection result as a table including character numerical values and a chart (claf), for example, a printer, a plotter, etc., and the processing device displays the operating procedure of the characteristic inspection device according to a command from the input device. A second processing means for selecting and controlling the processing means and the measuring instrument group, and a third processing means for selecting and switching the input / output circuit network.
Fourth processing means and setting and controlling the voltage and current of the power supply device
And processing means for loading measurement data into a memory device
And a sixth processing means for analyzing the data,
A seventh processing means for displaying and printing the measurement data and the analysis result as a table and a chart, and an eighth processing means for selectively connecting a plurality of resistors, coils and capacitors to assemble an input / output network. There is.

[0009]

According to the present invention, the user of the device of the present invention connects the telephone terminal device to be inspected to the device of the present invention, and the name of the telephone terminal device, the manufacturer's name, the date of the inspection, the inspection time, After inputting environmental conditions such as temperature and humidity at the time of inspection with the keyboard, simply operate the input device (keyboard, mouse) according to the operation procedure shown on the display device,
A series of complicated measurement and inspection tasks can be performed almost automatically.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an inspection of whether a facsimile complies with FCC part 68 will be described in detail below.

(B) System Hardware Configuration FIG. 1 shows the outline of the hardware configuration of an embodiment of the "telephone terminal characteristic inspection device" of the present invention.

Reference numerals 1 to 7 show the structure of a so-called personal computer, 1 is a CRT as a display device, 2 is a keyboard as an input device, 3 is a mouse as an input device, 4 is an external memory device, and 5 is an output device. Is a printer, 6 is a plotter as an output device, and 7 is a processing device.

The CRT 1 displays input data from the keyboard 2, for example, the name of the device under test measurement and inspection, date and time, environmental conditions such as temperature and humidity, and test number.

A menu of test procedures, test result data, graphs and the like are also shown.

The mouse 3 is mainly used to specify the menu shown on the CRT 1.

The external memory device 4 is a master file in which an application program for controlling the measurement / inspection device, a program for analysis of measurement data, etc. are recorded, and data for recording measurement data in measurement / inspection. It is a software storage device such as a file.

The printer 5 prints the measurement / inspection result, and the plotter 6 prints the diagram of the measurement / inspection result.

Reference numeral 8 is a group of measuring instruments such as a spectral analyzer, an FFT analyzer, a synthesizer, a multimeter, a storage scope, and a noise measuring instrument, and 9 is a switching device group thereof, and an input / output circuit network 11 via a plurality of switching devices 10. It is connected to the.

The input / output circuit network 11 includes a plurality of input circuits 1.
2, a plurality of output circuits 13 and a plurality of switching devices 14.

Reference numeral 15 is a control device for the switching devices 10 and 14, which selects a specified connection in accordance with a command from the processing device 7 to control-connect the switching devices 10 and 14.

Reference numeral 16 is a facsimile of the telephone terminal device under test, 1
6-1 is an input terminal thereof, 16-2 is an output terminal, and a switching device 14 for the input circuit 12 and the output circuit 13 respectively.
Connected to. Reference numeral 17 is a handset of the facsimile 16.

Reference numeral 18 denotes a test constant-voltage constant-current power supply device for the facsimile 16, which selects and sets a voltage value and a current value in response to a command from the processing device 7.

Reference numeral 19 is a test sound generator including a synthesizer, which generates a test sound in response to a command from the processor 7.

Reference numeral 20 denotes an electromagnetic field detecting device, and a switching device 14
And 10 are selectively connected to any of the measuring instruments in the measuring instrument group 8.

FIG. 2 shows the structure of a pi-type filter as an embodiment of the input circuit 12 and the output circuit 13 of FIG. The input circuit 12 and the output circuit 13 have the same structure.

Reference numeral 21 is a resistor group, 22 is a coil group, and 23 is a capacitor group, which is connected between the input terminals 25-1 and 25-2 and the output terminals 26-1 and 26-2 by switching the connection by the switching device 24. In addition, various pi-type filters can be constructed.

The switching device 24 is connected to the control device 15 as shown in FIG. 1, and selects and connects the resistance value, the inductance value, and the capacitance value determined by the instruction of the processing device 7.

(B) Master file Basic function of the present measurement / inspection device, for example, FCC part 68,
Operation procedure of this measurement / inspection device based on measurement / inspection standards such as DOC CS-03, means for recording data defined in measurement / inspection standards, data analysis means, data arrangement means, format of measurement / inspection result tables and figures A program such as creating means is filed.

(C) Data file This is a file for recording the data measured by the measuring instrument group 8 in FIG.

(D) Operation Procedure FIG. 3 is a flow chart showing an outline of the operation procedure and inspection processing procedure of the characteristic inspection device of the telephone terminal device.

When the operator connects the telephone terminal device to be inspected to the device of the present invention and activates the power supply of the device of the present invention, the operation system programs of the personal computers 1 to 7 in FIG. The input (step 31) becomes ready for input from the keyboard 2.

The so-called environmental condition input (step 31) means the name of the telephone terminal device, the name of the manufacturer, the date of the inspection,
Inputs such as inspection time, temperature at inspection, humidity at inspection, etc. are input, and the entered environmental conditions are automatically added to the inspection result data and inspection result output form, such as the performance history of the telephone terminal device. Easy to manage.

When the input of the environmental conditions is completed, the measurement / inspection procedure program is automatically read from the master file 32 of the external memory device 4 of FIG. 1 to the processor 7 of the personal computer, and the inspection item menu is displayed on the CRT 1. (Step 34) Then, the telephone terminal device is ready for inspection.

The inspection item to be executed is selected from the inspection item menu with the mouse 3 of the input device or the inspection item number is input with the keyboard 2. (Step 3
5)

By the above operation, the processing unit 7 of the personal computer retrieves the inspection conditions such as the inspection range and the inspection standard on the measurement inspection procedure program of the selected inspection item and combines them with the input environmental conditions. Then, it is displayed on the CRT 1 (step 36) and the automatic measurement is started.

In the automatic measurement process, in order to connect the necessary measuring instrument and input / output circuit network to the initially selected measurement item,
The processing device 7 switches the switching devices 10 and 14 of FIG. 1 by issuing a command to the control device 15 (step 37) to complete the setting of the switching device group 9, the input circuit 12, and the output circuit 13, and the input / output circuit. The net is built. (Step 3
8)

Next, the processing device 7 of FIG. 1 sets the function settings necessary for the inspection and the settings such as the input / output range for the measuring instrument group 8 by directly controlling the measuring instruments by a control circuit such as GP-IB. (Step 39)

For the power supply device 18, the current and voltage set in the inspection standard are directly controlled and set in the same manner as the measuring instrument group. (Step 40)

According to the above procedure, the inspection and measurement environment is prepared, and the measuring instrument group 8 starts the measurement according to the instruction of the processing device 7. When the measuring instrument group 8 completes the measurement, the processing unit 7 causes the measuring instrument group 8 to
The measurement data is read from the control circuit such as P-IB. (Step 41)

The measurement data taken into the processing unit 7 is
If necessary, analysis processing (step 42) and the like are performed, and a determination is made as to whether or not the measurement result is good or bad within the allowable range of the standard value prescribed in the measurement and inspection procedure program in advance, and C
Displayed on RT1. (Step 43)

The measurement of the inspection item selected above is completed. If another item is to be inspected subsequently, the procedure from step 35 is repeated. (Step 44)

When the measurement is finished, environmental conditions such as the name of the telephone terminal device, the manufacturer's name, the date of the inspection, the inspection time, the temperature at the inspection, the humidity at the inspection, the data of the inspection result and the quality The determination result is recorded in the data file of the external memory device 4. (Steps 45, 46)

At the same time, an inspection result data table and an inspection result data graph are created and printed on the printer 5 as a form. (Steps 47, 48, 49)

(E) Operation control of measuring instrument group FIG. 4 is a flow chart showing an example of operation control by the GP-IB circuit of the multimeter in the instrument group controlled by the processing device 7 of FIG. is there.

First, the setting of the function to be measured by the multimeter is set by the processor 7 through the GP-IB circuit. (Step 51)

The functions of the multimeter include a DC voltage function, an AC voltage function, a 2-wire resistance function, a 4-wire resistance function, a DC current function, an AC current function, etc. Select.

For example, when it is desired to measure the DC voltage, the function of the DC voltage function is set and controlled.

Next, the processor 7 sets the input range suitable for the magnitude of the signal to be measured by the multimeter by the GP-I.
The setting is controlled through the B circuit. (Step 52)

The input range indicates the setting of the input sensitivity that allows the magnitude of the signal to be measured.

The setting control for the multimeter measurement is completed by the above operation control.

(F) Switching of input / output circuit network The input / output circuit network is composed of a plurality of resistors 21, coils 22, capacitors 23 and a switching connection device 24 for these, as shown in the embodiment of FIG. , Switching device 24
Is connected to the controller 15 as shown in FIG.
By sending the measurement circuit data described in the measurement inspection procedure program to the control device 15 through the GP-IB circuit or the like by the instruction of the processing device 7, the switching device 14 of the input / output circuit network 11 is controlled, and the circuit is automatically switched. Then, switching of the input / output circuit network is completed.

(G) Setting of voltage and current FIG. 5 is a flow chart showing an example of operation control by the GP-IB circuit of the variable constant voltage constant current power supply device 18 which is controlled by the processing device 7 of FIG.

The loop current shown in FIG. 5 means a dc line current in a telephone line as a public facility, and the constant voltage / constant current power supply device 18 in FIG. 1 is a variable constant voltage / constant current power source and a dc line in a telephone line. It is a circuit including a current simulation circuit.

First, the processor 7 sends the voltage value data described in the measurement / inspection program to the constant voltage / constant current power supply 18 through the GP-IB circuit and sets it. (Step 61)

Similarly, the current value data is sent from the processing device 7 to the constant voltage / constant current power supply device 18 for setting. (Step 62)

Finally, in order to supply the telephone terminal device with the loop current under the data condition set in the constant voltage constant current power supply device 18, the output ON / OFF function of the constant voltage constant current device 18 is instructed by the processor 7. The GP-IB circuit is turned on to complete the voltage / current setting control. (Step 6
3)

(H) Data reading (measurement) FIG. 6 shows a group of measuring instruments 8 which are controlled by the processing device 7 of FIG.
5 is a flow chart showing an example of a process of reading the measurement data of 1. through the GP-IB circuit.

After the control of the measuring condition setting from the control device 7 to the measuring instruments of the measuring instrument group 8 described in the embodiment (e) is completed, the signal of the GP-IB circuit is processed to determine whether the measuring operation of the measuring instruments is completed. It is judged by monitoring with the device 7. (Steps 71, 72)

As a result of the processor 7 monitoring the GP-IB signal state, it is found that the measuring state of the measuring instrument is completed,
The processing device 7 can send a command for reading the measurement data from the measuring device to the measuring device through the GP-IB circuit, and read the measurement data from the measuring device into the processing device 7.
(Step 73)

(I) Data Analysis FIG. 7 is a flow chart showing an example of the folding process of the measurement data read by the processing device 7 of FIG.

The data read from the measuring device to the processing device 7 is subjected to arithmetic processing for comparison with the standard value described in the measurement / inspection procedure program, and a determination is made as to whether or not the arithmetic result conforms to the standard value. To do. (Steps 81, 82)

If the analysis result is nonstandard data, defective data processing (step 83) is performed, the measurement result and the analysis processing result are displayed on the CRT 1 (step 84), and the analysis processing ends.

(N) Display printing of tables and figures FIGS. 8 and 9 are CRTs showing the results of the folding process of the measurement data.
1 or an example of the output state to the printer 5 is shown.

When the analysis processing of the measurement data is completed, the CR
In addition to environmental conditions, standard values, measured values, analysis processing results, etc. are added to T1 and displayed in a table or a diagram (graph or the like).

The displayed contents are recorded in a reusable format in a data file in the external memory device 4 of FIG. At the same time, a data table (FIG. 8) and a data graph (FIG. 9) are created by the processor 7 and printed on the printer 5 as a form.

(L) Assembly of input / output circuit network FIG. 2 shows the configuration of a pi-type filter as an embodiment of the input circuit network and the output circuit network.

The input circuit 12 and the output circuit 13 of FIG. 1 have the same structure.

Reference numeral 21 is a resistor group, 22 is a coil group, and 23 is a capacitor group. By switching the connection by the switching device 24, the input terminals 25-1 and 25-2 and the output terminals 26-1 and 26-2 are connected. Further, it is possible to assemble circuits of pi-type filters having various characteristics.

The switching device 24 is connected to the control device 15 as shown in FIG. 1, and the switching circuit based on the resistance value, the inductance value, and the capacitor capacitance value described in the measurement / inspection procedure program by the instruction of the processing device 7. The characteristics of the input / output network are selected by sending data to the control device 15 through a GP-IB circuit or the like.

(W) Measurement inspection based on FCC standard FIG. 10 shows the measurement items based on the FCC standard. FIG. 11 shows a measurement / inspection procedure based on the FCC standard of FIG.

From the measurement item selection screen shown in FIG. 12, use the mouse 3 to display 68.308 SIGNAL POWER LIMI.
Specify TATION, and then use the mouse 3 to select the measurement inspection item 68.308 (b) on the measurement detail item selection screen of FIG.
If you specify (1), you can use COMMEN with the keyboard 2.
The T input is enabled. The COMMENT can input unique information and the like.

When the COMMENT input is completed, FIG.
The measurement / inspection processing procedure of the program flow chart shown in is executed, and the measurement / inspection based on the FCC standard is performed.

[0073]

Since the present invention is constructed as described above, it has the following effects.

It is possible to automatically perform test measurement / inspection as to whether or not at least the characteristics of the telephone terminal device conform to a plurality of types of standards including FCC part 68 and DOC CS-03.

The user of the device of the present invention connects the telephone terminal device to be inspected to the device of the present invention, the name of the telephone terminal device, the manufacturer's name, the date of the inspection, the time of the inspection, the temperature and humidity at the time of the inspection. After inputting environmental conditions such as the above with a keyboard, a series of complicated measurement / inspection operations can be almost automatically performed only by operating the input device (keyboard, mouse) in accordance with the operation procedure shown on the display device.

The time required for the inspection work and the plotting of the results can be remarkably shortened, for example, by 70% or more, and there is an effect that errors are eliminated.

Since the operation procedure is displayed on the display device, no skill is required for the operation.

[Brief description of drawings]

FIG. 1 is a block diagram showing an outline of a hardware configuration of an embodiment of a characteristic inspection device for a telephone terminal device.

FIG. 2 is an example of an input / output network.

FIG. 3 is a flow chart showing an outline of an operation procedure and an inspection processing procedure of a characteristic inspection device of a telephone terminal device.

4 is a measuring instrument group 8 which is operated and controlled by the processing device 7 of FIG.
2 is a flow chart showing an example of operation control by a multimeter and a GP-IB circuit in FIG.

5 is a flow chart showing an example of operation control by a GP-IB circuit of a variable constant-voltage constant-current power supply device 18 which is operation-controlled by the processing device 7 of FIG.

FIG. 6 is a measuring instrument group 8 which is controlled by the processing device 7 of FIG.
5 is a flow chart showing an example of a process of reading the measurement data of 1. through the GP-IB circuit.

7 is a flow chart showing an example of an analysis process of measurement data read by the processing device 7 of FIG.

FIG. 8 is a diagram showing an example of an output state of measurement data folding processing results to the CRT 1 or the printer 5.

FIG. 9 is a diagram showing an example of an output state of a measurement data analysis processing result to the CRT 1 or the blink 5.

FIG. 10 is a measurement item based on the FCC standard.

11 is a measurement / inspection procedure based on the FCC standard of FIG.

FIG. 12 is a measurement item selection screen based on the FCC standard.

FIG. 13 is a flow chart of a measurement / inspection procedure based on the FCC standard.

[Explanation of symbols]

 1 CRT 2 keyboard 3 mouse 4 external memory device 5 printer 6 plotter 7 processing device 8 measuring instrument group 9 switching electrical charging group 10 measuring instrument switching device 11 input / output circuit network 12 input circuit 13 output circuit 14 input / output circuit switching device 15 switching Control device for devices 10 and 14 16 Test telephone terminal device facsimile 16-1 Test telephone terminal device facsimile input terminal 16-2 Test telephone terminal device facsimile output terminal 17 Test telephone terminal device Facsimile handset 18 test Constant voltage constant current power supply device 19 test sound generation device including synthesizer 20 electromagnetic field detection device 21 resistor group 22 coil group 23 capacitor group 24 switching device 25-1, 25-2 input terminal 26-1, 26-2 output Terminal

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kozo Baba 3-5-18 Ikeko, Zushi City, Kanagawa Prefecture

Claims (2)

[Claims] 1. At least FCC Part 68 standard, D
Tests defined in OC CS-03 standard, eg internal signal power measurement, DTMF signal measurement, pass transmission loss, 1 kH
z Independent measurement of multiple types of telephone terminal equipment including power measurement by acoustic signal, vertical balance limitation, on-hook impedance measurement and ring equivalence calculation, billing protection, hearing aid, single frequency limitation, DP network control signal It is a device for a display device, an input device, a memory device, an output device, a processing device, a spectral analyzer, an FFT analysis device, a synthesizer, a multimeter, a storage scope, a noise measuring device, and a group of telephone terminals. A measuring circuit network connected to the input and output terminals, a control device for a switching device of the measuring circuit network, a variable constant voltage constant current power supply device for supplying power to a telephone terminal device, a test sound generating device, and an electromagnetic field detecting device. The display device, at least, and the connection operation procedure of the characteristic inspection device. The table and figure of the fixed inspection result are displayed.The memory device is a master file that stores the operating procedure, display procedure, and measurement data processing procedure of this characteristic inspection device, and the data that stores the measurement data. And a file, the processing device includes a first processing means for displaying an operating procedure of the characteristic inspection device, a second processing means for operating and controlling the measuring instrument group, and a third switching means for selecting and switching the input / output circuit network. A fourth processing means for setting and controlling the voltage and current of the processing means and the power supply device, a fifth processing means for loading the measurement data into the memory device, a sixth processing means for analyzing the data, the measurement data and the analysis result are displayed. And a characteristic inspection device for a telephone terminal device, which includes a seventh processing means for displaying and printing as a figure. 2. An input / output measurement circuit network comprising a plurality of resistors, coils and capacitors and a controller for switching and connecting these resistors, wherein the processing device connects the resistors, coils and capacitors to assemble an input / output measurement circuit network. A characteristic inspection device for a telephone terminal device, including the processing means of 8.