JPS6370178A - Tester - Google Patents

Abstract

PURPOSE:To enable automatic testing of a printed circuit board without requiring expertism, by reading out a test data previously stored in an auxiliary memory with respect to operating conditions inputted through an input unit. CONSTITUTION:A keyboard 4 is used as indicated on a screen of a CRT display 3 to input printed circuit board testing conditions into a microcomputer 5. The conditions inputted are displayed on the CRT display device 3 simultaneously. According to the testing conditions inputted, the microcomputer 5 takes a printed circuit board data to be tested out of a floppy disc 1. An input/output circuit is built up with a DI/DO changeover unit in a printed circuit board testing unit 6 according to the data thus taken out. Then, when a printed circuit board is inserted, an indication is outputted on a screen of the CRT display device 3 to start a test and upon the ending of the test, the results are outputted to a printer 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a testing device, and particularly to a testing device for performing a verification test on input/output covert boards.

(Prior Art) In order to perform a verification test on a printed circuit board, a dedicated test device for each printed circuit board or a universal test device in which inputs and outputs are manually set are used.゛Then, as shown in Fig. 6, the universal testing device inserts the printed circuit board 1 to be tested into the printed circuit board insertion part 7, and connects the input and output pins according to the type of the installed printed circuit board. A pin is set on a board 8 for setting, and an output data display lamp 9 is checked by operating an input setting switch 10.

Note that 11 is a power switch.

(Problems to be Solved by the Invention) Among the conventional devices described above, the former dedicated test device has the following problems:
One test device is required for each type of printed circuit board, and with the universal test device described in the review, the tester creates the sequence for each printed circuit board, sets the input and output by hand, and the tester can set the input and output according to the input settings. I have to check the results,
Specialized knowledge was required.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a testing device capable of testing various printed boards without requiring specialized knowledge.

[Structure of the Invention] (Means for Solving the Problems) The present invention will be explained with reference to FIG. 1 corresponding to an embodiment.
An input device 4 for inputting operating conditions, a display device 3 for displaying operating procedures, an auxiliary storage device 1 for storing operating conditions, an output device 2 for outputting test results, and an input device for inputting test conditions for printed circuit boards. It is composed of a test unit 6 for outputting data, and a microcomputer 5 for performing a test c1.

(Function) Therefore, when operating conditions are input through the input device 4, test data stored in advance in the auxiliary storage device 1 is read out in response to the input, and thereby a test of the printed circuit board is started. The results are output to the output device 2.

(Example) Examples will be described below with reference to the drawings.

FIG. 1 is a functional block diagram of an embodiment of a test device according to the present invention.

As shown in FIG. 1, this test equipment includes a microcomputer 5, a printed circuit board test unit [6], a floppy disk 1, a printer 2, a CR display device 3, and a keyboard 4 connected to the microcomputer 5 by a bus. It consists of

'Here, the input/output data of each printed circuit board is stored on the floppy disk 1, and the man-machine interface performs setting operations using the CRT display device 3 and keyboard 4, and at the same time outputs the test results to the printer 2. It is something to do.

Note that the floppy disk 1 is located on the printed circuit board.
Store the pattern. The printer 2 prints the test results of the printed circuit board. The keyboard 4 is a man-machine interface for inputting operating conditions to the microcomputer 5, and the CRT display 3 is for displaying test conditions.

Under the control of the microcomputer 5, the printed circuit board testing unit 6 outputs test data to the printed circuit board 1 through the test board connecting connector 12, and inputs the operation results of the test board.

The overall operation is to input printed circuit board test conditions into the microcomputer 5 using the keyboard 4 according to instructions on the screen of the CRT display device 3. The input conditions are displayed on the CRT display device 3 at the same time.

The microcomputer 5 operates according to the input test conditions.
Retrieve the printed circuit board data to be tested from floppy disk 1. Based on the retrieved data, configure the input/output circuit with the Or/Do switching unit in the printed circuit board test unit 6.

Next, an instruction is output on the screen of the CRT display device 3 into which the printed circuit board is inserted, and the test is started.

When the test is completed, the results are output to the printer 2.

FIG. 2 is a diagram showing the operating modes of this device, including an automatic test mode, an aging test mode, and a new board registration mode.

FIG. 3 is a flowchart 1 of the automatic test mode. First, the name of the printed circuit board to be tested is input using the keyboard 4, and this is confirmed in step 31. In step 32, it is determined whether the input printed circuit board has already been registered, and if it has been registered, the process moves to step 33, where the input/output data for this printed circuit board is transferred to a floppy disk. Take out lc from 1,
A test circuit is configured in step 34. In step 35, the test is automatically started, and in step 36, the test result is output.

FIG. 4 is a flowchart of the aging test mode. The steps from inputting the printed circuit board name using the keyboard 4 to starting the test (steps 41 to 45) are the same as in the case of FIG. 3. However, the reading of test data and the configuration of the test circuit in this case are sensitive to aging. In step 4G, it is determined whether or not there is a defect. If there is a defect, it is output to the printer in step 48, and in step 47 it is determined whether or not to interrupt the test.

FIG. 5 is a flowchart of the new root registration mode.

In step 51, the name of the printed circuit board is input using the keyboard 4, and in step 52, the input bin Nα and output pin Nα are similarly input. Then, in step 53, an input data pattern is input using the keyboard to configure a test circuit.

Next, in step 5, the tested printed circuit board is transferred to the cellar L-L, and the output data obtained by executing the automatic test is
At step 5.56, the new board is recorded by storing it on a floppy disk in the same way as the input data.

Note that the input bin Nα, the output pin NO1 input signal pattern, and the normal output pattern are stored on the floppy disk.

As a result, most of the input cover turns become intermittent increment data. The CPU tests the printed circuit board under test by comparing the created input cover pattern and output cover pattern.

The printed circuit board test unit automatically configures the input/output circuit of the printed circuit board according to the command data (input bin number, output bin Nα) of the CPU.

[Effects of the Invention] As explained above, according to the present invention, by using a microcomputer, it is now possible to automatically perform tests that were conventionally performed manually by engineers and using sequence diagrams. .

In addition, the level of the test has become constant, and it is now possible to take the test even if you do not understand the sequence.

[Brief explanation of the drawing]

Fig. 1 is a functional block diagram of an embodiment of the test device according to the present invention, Fig. 2 is a diagram not showing the operating modes of this device, Fig. 3 is a 70-diameter diagram in automatic test mode, and Fig. 4 5 is a flowchart of the aging test mode, FIG. 5 is a flowchart of the new baseboard σ recording mode, and FIG. 6 is an outline drawing of the conventional test equipment. 1...Floppy disk 2...Printer 3
... CRT display device 4 ... Keyboard 5
・・・Microcomputer

Claims (1)

[Claims] Test equipment that performs verification tests on various printed circuit boards includes an input device for inputting operating conditions, a display device for displaying operating procedures, an auxiliary storage device for storing operating conditions, and an output device for outputting test results. 1. A test device comprising: a test unit for inputting and outputting test conditions for printed circuit boards; and a microcomputer for performing arithmetic processing, and for automatically testing according to the various types of printed circuit boards.