DE1110246B - Circuit arrangement for checking the testing and connection devices of toroidal core evaluation fields in telecommunication systems, especially telephone systems - Google Patents

Description

Circuit arrangement for checking the test and connection devices of toroidal evaluation fields in telecommunications, especially telephone systems It is known in telecommunications, in particular telephone systems, toroidal evaluation fields in Form of a transmitter matrix at a central point for a wide variety of tasks to use, e.g. B. for participant identification, to control key figures in blocking devices, for revaluation or for carrying out vacant or occupied controls.

In these toroidal core evaluation fields, the individual cores are in the Usually arranged in decadic form, so that the vertical columns indicate the individual decades and the ten horizontal lines correspond to the digit values 1 to 0; these cores thus fulfill the function of jumper rings and transformers. The individual subscriber numbers or the individual key figures are permanently assigned evaluation loops, which are carried out by Corresponding core combinations are threaded and in the event of the test over a test generator can be closed. The examination of the individual nuclei on their The state of excitation occurs through one or more of the nuclei individually in sequence or in groups of several simultaneously scanning test facilities depending on of the switching devices controlling the connection of the cores and the test equipment.

Since such toroidal evaluation fields are consistently in central facilities Use it is advisable to check that it is correct from time to time Carry out work on the individual test and connection devices in order to avoid that by failure or failure of any of the sub-devices the connection setup is impaired, the individual lines due to incorrect evaluation results are unnecessarily burdened or the like.

The invention therefore relates to a control circuit arrangement the test and connection devices of toroidal core evaluation fields. This control is achieved according to the invention that through all toroidal cores of the evaluation field a control loop is threaded, which is over when the control process is triggered an already existing generator for the evaluation field is closed, and that Control switching means are provided, of which the individual cores are scanned Test equipment alone or in conjunction with the connection of the test equipment controlling interface devices are controlled and depending on the result of the Control cause different control signals to be triggered.

For a more detailed explanation of this method, the basic circuit diagram shown in the drawing serves in detail the toroidal core evaluation field with the columns H, Z, E and the lines 1 to 0, the evaluation loops, z. B. 212, and shows the common control loop KS. Furthermore, the test devices P 1 to P 0, the connection devices ASK, the generator G and control switching means K and the control signal display S are shown.

A control process is triggered automatically, for example, by pressing a button manually or by a periodically switching contact. When triggered, the generator G is automatically switched over, e.g. B. by contact ku, on the control loop KS running through all cores. At the same time, the connection control device ASK is started in a manner not shown, whereby the individual cores are scanned by the associated contacts, z. B. h or z or e, are closed. In the example shown in the drawing, the parallel column test is used, in which the individual cores of a single column z. B. 1, 2 ... 0 of column H to be checked at the same time from a corresponding number of equipment P l, P 2 ... P 0, successively each column contrast. The result recorded by the test devices P 1 to P 0 for each column is fed to the control switching means K, which then cause different control signals to be triggered on the control signal display S in accordance with the respective control result.

As a criterion for ensuring that all connection and test equipment is working properly work, z. B. be assessed that at each control step all test facilities become effective; this can be done at the end of the whole control process by a control pulse of the connection device ASK from the control switching means K can be displayed as a positive control signal.

On the other hand, if one or more remain within a control step Test equipment ineffective, this is a sign that the connection equipment dependent coupling contacts, e.g. B. h or z or e, give no contact or that the coupling coil or the test device itself is defective. This condition leads to the triggering of a corresponding control signal by the control switching means.

In connection with this, the operating status (effective or ineffective) of the individual test equipment and the control steps of the connection equipment characteristic signaling by the control switching means can in the event of a fault the exact location of the fault is determined and the fault can thus be remedied more quickly will.

Claims (1)

PATENT CLAIM: Circuit arrangement for checking the test and connection devices of ring core evaluation fields with ring cores arranged in matrix form, several of which are run through in certain combinations of evaluation loops, are controlled via the test devices, in telecommunication systems, in particular telephone systems, characterized in that a control loop ( KS) is threaded, which is closed when the control process is triggered via a generator (G) already present for the evaluation field, and control switching means (K) are provided, of which the test devices (P1 up PO) controls alone or in conjunction with the connection of the testing devices (P 1 to P 0) controlling Anschalteeinrichtungen (ASK) charged and cause the release of different control signals (S) depending on the result of control.