JPH04150442A - Interface testing system - Google Patents

Abstract

PURPOSE:To continuously test interfaces without changing connecting cables by connecting plural kinds of interface functions having one connector as an interface through a connecting cable having the functions of the signal lines of all interfaces. CONSTITUTION:A testing section 2 is connected to the connector 14 of a device to be tested through a connecting cable 3 having the functions of the signal lines of all interfaces. Upon actuation, the section 2 carries out prescribed tests by successively setting interface functions and selecting the signal line of each interface. When a signal line is commonly used, but the signal line arrangement is different on the tested device side, tests can be carried out continuously by providing a line connection changing mechanism which can be switched at the time of setting each interface in the connecting cable. Since the signal lines of all interfaces commonly using the connector 14 are connected to the testing section 2 through the connecting cable 3 as mentioned above, the section 2 can continuously test all interfaces by one time of cable connection and, in addition, without making actuating operation to the interface one by one. Therefore, interface testing is performed efficiently.

Description

[Detailed Description of the Invention] [Summary] The present invention relates to an interface test method, and aims to reduce test operations and test connection cables when testing multiple interfaces that share a connector. shared by multiple types of interfaces,
A testing method for devices that performs corresponding interface processing using connected cables, which includes a connecting cable that is connected to the connector and has all the signal lines of the interface, and multiple types of interface functions through the connecting cable. A test section is provided to sequentially set and test each of the interfaces, and the connection cable having the signal lines of all the interfaces that share one connector is connected to the connector to continuously test the functions of the multiple types of interfaces. Configure it as follows.

[Industrial application field]

The present invention relates to an improvement in an interface testing method for testing multiple types of interfaces that share a connector.

[Conventional technology]

FIG. 4 is a diagram showing an example of a communication control device, and FIG. 5 is an explanatory diagram of a conventional test method.

When data communication is performed using a communication line, a DTE (modem) or DSU is used as a line terminating device. Based on the CCITT recommendations, the V series interface (hereinafter referred to as ■ interface) and the X series interface (X interface) are used as interfaces between this modem and DSU and data communication equipment, and the equipment Both interfaces are provided to support different line types.

FIG. 4 shows the configuration of the communication control device 10 on the device side, which includes an X interface unit 12 that exchanges data with the DSU 17, and an interface unit that exchanges data with the modem 1. 13 and a control section 11 that controls one of these interface sections to perform communication processing, and the DSU 17 or modem 18 is connected via one connector 14.

The communication control device 10 includes a DSU 17 corresponding to a communication line.
and modem 18, so the connector 14 is shared in order to make the device more compact, and the signal lines from the X interface section 12 and the ■interface section 13 are connected to the Signal lines that are connected to different bins or can be shared are connected to the same bin and can be switched.
When connecting to the SU 17, dedicated connection cables are used such as the connection cable 15 for X, and the connection cable 16 for connection to modem 18, each of which has unnecessary signal lines omitted.

Fig. 5 shows a test method when there is a plurality of such communication control devices, in which the communication control device 10 and the communication control device 20 are connected with a connection cable dedicated to the interface to be tested, and the host device 1, the IF test section 2a and V, and the IF test section 2b loaded in the IF test section 2b are activated to perform a return test.

[Problems to be Solved by the Invention] In testing the above-mentioned communication control device that has an Is going.

For this reason, test connection cables are required for each interface type, as well as connection changes and operations to start up individual test units, which poses a problem in that testing is time-consuming.

In view of the above problems, an object of the present invention is to provide an interface test method for efficiently testing the interface function of a device having multiple types of interfaces in one connector.

[Means for Solving the Problems] In FIG. 1, a diagram showing the principle of the present invention, 14 is a connector, which is commonly used for multiple types of interfaces.

A connection cable 3 is connected to the connector 14 and has signal lines for all interfaces.

Reference numeral 2 denotes a test section which sequentially sets a plurality of types of interface functions via a connection cable 3 and tests each one.

[Operation] The test section 2 is connected to the connector 14 of the device to be tested using the connection cable 3 that includes signal lines of all interfaces.

The activated test section 2 sequentially sets the interface functions, selects the signal line of each interface, and performs a predetermined test.

If the signal line is shared and the signal line arrangement of the other party is different,
If a connection change mechanism is provided in the connection cable and the connection is changed according to the interface settings, continuous testing can be performed in the same way.

As described above, since the signal lines of all the interfaces that share the connector 14 are connected to the test section 2 by the connection cable 3, the test section 2 can test all the interfaces continuously, and only one test is required. Testing can be done efficiently because all you need is a cable connection and there is no need to perform startup operations each time.

〔Example〕

Embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 2 is a block diagram of one embodiment, and FIG. 3 is a diagram showing another embodiment.

FIG. 2 shows a configuration example in which a loopback test is performed by directly connecting communication control device 10 and communication control device 20 having the same functions through connection cable 3. In the figure, communication control devices 10 and 20 have an X interface section 12.22 and a ■ interface section 13.23, respectively, and are connected to a modem or DSU via a connector 14.24. Then, the corresponding interface is activated by an identification signal output from the modem or DSU.

The connectors 14 and 24 are shared by the X interface section 12 and the ■interface section 13, and the X interface section 22 and the ■interface section 23, respectively.The connector bins are used independently between the interfaces, or the Some are shared.

The connection cable 3 has signal lines for the X interface and the are directly connected.

2 is a test section (test program) loaded into the host device 1, which performs a return test of the X interface function.
, an IP test section 2a, and an IP test section 2b, which performs a return test of the interface function, X, IF.
The test and the V and IF tests are conducted consecutively.

In the above configuration, the connector 14 and the connector 24 are directly connected by the connection cable 3, and the test section 2 is activated.

First, the X and IP test section 2a operates, and after setting the X interface function in the control section 11 and the control section 21, transmits test data with the communication control device 10 as the transmitting side,
The test is performed by comparing the data received from the communication control device 20, and conversely by comparing the transmitted data with the received data received by the communication control device 10 using the communication control bag N20 as the transmitting side.

When the test of the X interface function is completed, the test section 2 performs the same test as the X interface function test after setting the interface.

As described above, by using the connecting cable 3 having both the No. 48 WA of the X interface and the ■ interface, which share the connectors 14 and 24, it is possible to continuously perform the function test of both interfaces.

FIG. 3 shows another embodiment, in which the A interface and the B interface share the bins of one connector 14, and the bin arrangement of the mating connector of the shared signal line is different. Change the wiring using the interface settings.

The monitoring circuit 26 of the connection change mechanism 25 provided in the connection cable 28 controls the switching circuit 27 in response to the interface setting signal S to switch the connection.

As a result, the connection cable 28 is switched by the test section 2 setting the interface, so that it is possible to test the A interface function and the B interface function continuously in the same way as in the previous embodiment.

As described above, by connecting multiple types of ink face functions that have one connector 14 as an interface with a connection cable that includes the signal lines of all interfaces, it is possible to test continuously without replacing the connection cables. It becomes possible.

Note that although the above embodiments have been exemplified by a communication control device that communicates via a line, it is of course applicable to an interface test when directly connected to an external device.

Furthermore, it goes without saying that the present invention can be applied not only to repeat tests, but also to cases where the test section 2 is equipped with an interface function, as shown in FIG.

[Effects of the Invention] As explained above, according to the present invention, an interface test of a device that has a plurality of interfaces in one connector and performs interface processing selectively using a connecting cable can be performed continuously by one cable connection. Since the test is carried out in the same way, it has many advantages, such as saving the trouble of testing and reducing the number of cables required for the test to one.

[Brief explanation of drawings]

Fig. 1 is a principle diagram of the present invention, Fig. 2 is a configuration diagram of an embodiment,
FIG. 3 is a diagram showing another embodiment, FIG. 4 is a diagram showing an example of a communication control device, and FIG. 5 is a diagram explaining a conventional test method. In the figure, 1 is a host device, 2 is a test section, 2a is an X, TF test section, 2b is a V, TF test section, 3 and 28 are connection cables, 3a and 3b are connectors, 10.20 is a communication control device, 11゜21 is a control unit, 12.22 is an X interface unit, 1323 is a V interface unit, 14.24 is a connector, 15 is an X connection cable, 16 is a V rigid connection cable, 17 is a DSU, 18 is a modem, 25 26 is a monitoring circuit, and 27 is a switching circuit. Apricot

Claims (1)

[Scope of Claims] [1] A testing method for a device in which one connector (14) is shared by multiple types of interfaces and the corresponding interface processing is performed using a connected cable, the test method comprising: connecting to the connector (14); a connecting cable (3) having signal lines of all the interfaces, and a testing section (2) for sequentially setting and testing each of the plurality of types of interface functions via the connecting cable (3); The connection cable (3) has signal lines for all interfaces that share one connector (14).
) is connected to the connector (14) to continuously test a plurality of types of interface functions. [2] If the signal line connected to the connector is shared between different interfaces, and the signal line is different from the signal line arrangement of the other party, connect a connection change mechanism that switches the signal line according to the interface function settings. The interface test method according to claim 1, wherein the interface test method is provided within a cable.