JP2706807B2 - Testing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field of the Present Invention> The present invention relates to a test apparatus that changes a test condition for a test target with a command signal.

<Prior Art> (FIG. 11) For example, a test device for testing a device that handles multiplex signals and the like is configured as shown in FIG. In FIG. 11, reference numeral 11 denotes a transmitting / receiving unit for transmitting a test signal (multiplex) to the test object 1 and receiving a multiplex signal from the test object 1;
Reference numeral 12 denotes a command processing unit for setting various setting items for transmission / reception to the transmission / reception unit 11 (interfaces such as 52 Mb and 156 Mb, signal formats, and the like) using command signals.

13 is a setting means for allowing the user to select and set many setting items for determining various test conditions of the apparatus, and displays the setting items and data to be selected on the display device 14.
, And a command signal corresponding to the selected setting item and data is sent to the command processing unit 12.

Reference numeral 16 denotes a GP-IB interface for controlling this device by an external device (computer), and receives a command signal from the external device and outputs it to the command processing unit 12.

Therefore, a test can be performed under desired test conditions by sequentially selecting a predetermined one of the setting items and the data displayed on the display device 14 by key operation.

<Problems to be solved by the invention> However, in this type of conventional apparatus, when a part of the current test condition is changed and set by key operation,
Even if the change command signal itself is correct,
There may be inconsistencies in the state of other setting items, and in order to eliminate this inconsistency, complicated work such as reconsideration and resetting of other setting conditions is required.

When a multi-command signal is input from an external device, the command processing unit 12 sequentially sends the command to the transmission / reception unit 11 and performs the setting. When one command is executed, the subsequent commands are executed. Even when an inconsistent multi-command that cannot be executed is input as a whole, there is a problem that it is not possible to know that an inconsistent multi-command has been input until an inconsistent multi-command is entered.

An object of the present invention is to provide a test apparatus that solves this problem.

<Means for Solving the Problems> In order to solve the problems, the test apparatus of the present invention sets one test condition with status data of a plurality of setting items, and changes the status data of the setting items according to an instruction signal. A state data storage means for storing state data of a plurality of setting items which determine the current test conditions in order of increasing influence on other setting items; and A settable information creating means for creating and storing changeable information for each setting item in the order in which the changeable information has a greater effect on other setting items; and setting items to be changed and their status data. State data changing means for changing the state data of the corresponding item in the state data storage means upon receipt of the command signal including the instruction signal.

<Operation> However, when the status data is changed and set by the command signal, information that can be set for the status data is created for each setting item.

<Embodiment of the Present Invention> (FIGS. 1 to 10) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a test apparatus showing one embodiment of the present invention.

This test apparatus performs a transmission and reception test of a multiplexed signal (a multiplexed signal having a format for locating the position of a characteristic signal of a low-order group signal at a predetermined position in a high-order group signal of one frame and pointer information) in a new synchronization system. It is a test device for performing.

In FIG. 1, a transmission / reception unit 21 transmits a test signal to a multiplexed signal receiving device (not shown) to be tested and receives a signal from the multiplexed signal transmitting device (not shown).

Reference numeral 22 denotes a reception control device which receives a setting item signal and a status data signal from a first command processing unit 30 described later, and sets the receiving circuit 23 to a status corresponding to the status data.
Is a transmission control device that similarly receives a setting item signal and a state data signal and sets the transmission circuit 25 to a state corresponding to the state data.

The first command processing unit 30 is configured to receive a command signal and output a setting item and its status data signal to the transmission / reception unit 21.

A first memory 31 stores a plurality of setting items that determine the current test conditions and their status data in the order of the greatest influence.
As shown in FIG. 2, the state data is stored in the setting items of the transmitting / receiving unit 21 in the order of the greatest influence.

Reference numeral 32 denotes a first settable information creating unit that creates changeable items and state data as information for each item with respect to the setting state stored in the state data storage unit 31.

This information is created as flag information in which “1” is assigned to settable data and “0” is assigned to unsettable data in the current status data shown in FIG. A possible range is created as information (FIG. 3).

Reference numeral 33 denotes first state data changing means for changing the state data of the designated setting item in response to a command signal including the setting item and the state data.

Reference numeral 34 denotes a command execution unit, which outputs status data for each setting item stored in the first status data storage unit 31 to the transmission / reception unit 21 to set test conditions.

Reference numeral 40 denotes a man-machine interface that displays test data such as received data and current test conditions, and changes state data for each setting item by key operation or the like, and includes a display device 41, a key operation unit 42, and a display control unit. 43 and a command output unit 44.

The display control section 43 displays the current setting state (item and state data) stored in the first state data storage means 31 on the display device 41 as shown in FIG. The settable information of the selected item is displayed in association with the function key.

Therefore, when the interface is designated by the cursor key and the information to be set is selected by the function key, a command signal for changing the setting item and the status data corresponding to the selected information is output to the first command processing section 30. Will be done.

Reference numeral 45 denotes an external interface unit that receives a command signal from an external device, and has a configuration based on GP-IB or RS232C.

Reference numeral 46 denotes a second command processing unit which checks whether or not a command signal input from the external interface unit 45 can be executed irrespective of the current state of the apparatus and sends it to the first command processing unit 30. It is configured to be.

47 is a command storage means for storing command signals input from the external interface unit 45 in the order of input, and 48 is stored in the first state data storage means 31 when a command signal is input via the external interface unit 45. This is second state data storage means for storing the current state data of each item as it is.

Reference numeral 49 denotes a second settable information creating unit that creates settable information for each item based on the setting states stored in the second state data storage unit 48.

Numeral 50 is a determining means for comparing the command signal stored in the command storing means 47 with the settable information from the second settable information creating means 49 to determine whether or not the command can be set.

Reference numeral 51 denotes a second status data changing unit that changes the status data of the setting item in the second status data storage unit 48 based on the command signal determined by the determination unit 50 to be able to set a command.

The determination unit 50 reads out the command signals stored in the command storage unit 47 one by one, performs this determination, and when it determines that the command cannot be executed, sends an error signal to the external device via the external interface unit 45. When it is determined that the command is executable up to the last command, a settable signal is output.

Reference numeral 52 denotes a command sending unit that receives the settable signal from the determination unit 50 and sends the command signals stored in the command storage unit 47 to the first command processing unit 30 in order.

Next, a processing procedure of the first command processing unit 30 will be described.

When a certain setting item is specified in advance, whether or not it is necessary to create settable information for an item other than the setting item is indicated by “1” or “0” in a setting change matrix table (fifth item).
FIG. 6), a state data change matrix table (FIG. 6) indicating whether or not the state data needs to be changed when a setting item is designated by "1" and "0"; An information creation specification table (FIG. 7) in which control information indicating whether or not or the like, default patterns, and initial values of state data are set and stored for each setting item is created.

FIG. 8 shows a processing procedure when the status data of the item specified by the command signal is changed.

When the item to be changed is specified, the bit of the corresponding item in the setting change matrix table is checked, and if this bit is "1", the procedure proceeds to the settable information creation procedure (steps 1 and 2).

In this setting possible information creation, as shown in FIG. 9, a default pattern of a designated item is extracted from the information creation specification table, and this pattern is stored in a corresponding setting possible information storage table (step 3).

Next, it is determined whether the interface case No. of the corresponding item in the information creation specification table is “−1”,
If it is not “−1”, as shown in FIG. 10, the corresponding item of the interface table is determined by the value of item No. 0 of the information creation specification table and the status data table, and a settable information table is created. (Mask pattern creation, steps 4 and 5).

Next, the same procedure is performed for the signal format, and a mask pattern is created for the corresponding item in the settable information table (steps 6 and 7).

For items that have individual processes other than this process,
The corresponding individual processing is executed to create a settable information table (step 8).

After performing the above setting possible information creation processing (steps 3 to 8), the corresponding bit of the state data change matrix table is checked, and if this bit is "1", the flow proceeds to the state data change processing procedure (step 3). 9).

At the beginning of the status data change process, it is determined whether the settable information check presence / absence information of the control information of the corresponding item in the information creation specification table is “1”, and “1”
In the case of, the state of the corresponding item in the state data table is checked against the bit pattern or the upper and lower limit values of the corresponding item in the settable information table, and it is determined whether the current item is normal or not ( Steps 10, 11).

If it is determined to be abnormal, the initial value of the corresponding item in the information creation specification table is set in the state data table (step 12).

Items that need to be checked according to individual conditions are checked by individual processing (step 13).

All items below the items for which the above processing is specified (however,
This is performed for the setting change matrix table and the status data change table where the corresponding bit is "0"), and the settable information table is completed (step 14).

As described above, when a command signal for changing the status data of one setting item is input, information that can be set for lower setting items is sequentially created with the change, and key operation is performed. Is changed only for those assigned and displayed on the function keys based on the settable information, so that there is no inconsistent setting state.

The command signal input via the external device 45 is always compared with the settable information by the determination means 50 of the second command processing unit 46. If the command signal is determined to be executable, the command signal is output. Then, the state data in the second state data storage means 48 is changed, and new changeable information is created in accordance with this change, and a comparison with the next command signal is made.

After this process is performed for all command signals, the command signal is sent to the first command processing unit 30, so that the state of the apparatus is set by a command signal (multi-command signal) that is totally consistent.

<Other embodiments of the present invention> In the above-described embodiment, the test apparatus has been described in which the state data of most of the lower setting items is determined by determining the state data of the interface and the signal format. However, it is needless to say that the present invention is not limited to this embodiment. Instead of the individual processing in the flowchart of FIG. 8, the same processing as in steps 6 and 7 may be sequentially performed for other items.

In the above-described embodiment, the test apparatus for transmitting and receiving a multiplex signal has been described. However, the present invention can be similarly applied to other test apparatuses.

<Effects of the Present Invention> As described above, the test apparatus of the present invention collectively creates changeable information with respect to the status data of the setting items that determine the current test conditions. By displaying the settable information, comparing with the command signal, and the like, it is possible to prevent the device from being in an inconsistent setting state, and it is possible to reliably perform manual setting or remote setting from an external device. .

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a memory diagram showing current state data, and FIG. 3 is a diagram showing a storage format of a main part of the embodiment. FIG. 4 is a diagram showing a display screen of one embodiment, and FIGS. 5 to 7 are diagrams showing storage formats of the main parts of the embodiment. FIG. 8 is a flowchart showing the processing procedure of the main part of one embodiment, and FIGS. 9 and 10 are diagrams for explaining the processing procedure of FIG. FIG. 11 is a block diagram showing the configuration of a conventional device. 30 first command processing unit 31 first state data storage means 32 first settable information creating means 33
First state data changing means, 46... Second command processing unit, 47... Command storage means, 48... Second state data storage means, 49. …
Determination means.

Claims (2)

(57) [Claims] 1. A test apparatus for setting conditions relating to a desired test with status data of a plurality of setting items and changing status data of the setting items in accordance with an instruction signal, wherein a current test condition is determined. Status data storage means for storing status data of a plurality of setting items in the order in which the effect on other setting items is large; and changeable setting of status data of each setting item stored in the status data storage means is possible. A settable information creating means for creating and storing information in the order in which the influence on other setting items is large, and a command signal including a setting item to be changed and its status data, A test apparatus comprising: status data changing means for changing status data. 2. The apparatus according to claim 1, further comprising: a determination unit configured to determine whether the command signal is executable based on the settable information, and restricting a change in state data based on a result of the determination. Testing equipment.