SU801276A1 - Device for monitoring communication system digital line channel state - Google Patents

Description

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The invention relates to telecommunications And can be used when measuring the electrical parameters of the regenerators of digital communication systems.

A device for monitoring the state of a digital linear path of communication systems is known, which contains a regenerator, the first output of which is connected via an attenuator to one of the modulo-two inputs, n indicators whose inputs are combined, an integrator, a multivibrator, and a low-frequency signal generator LlJ provides control single from aibok.

The purpose of the invention is to provide the ability to control single errors.

This goal is achieved by the fact that the device for monitoring the state of the digital linear path of communication systems contains a regenerator, the first output of which through an attenuator is connected to one of the inputs of the modulo adder two, n indicators whose inputs are combined, an integrator, a multivibrator and a low-frequency generator signal, enter; 1y shaper rectangular

pulses, trigger and element, at. This second regenerator output. Through a series-connected square pulse shaper, a trigger whose other input is connected to the third output of the regenerator, the integrator and the low-frequency signal generator are connected to the first input of the And element, the input form is:

0 l of rectangular pulses through a modulo-two modularly connected in series and a multivibrator connected to the second input of an element I, the output of which is connected to the combined inputs of the n indicators.

FIG. 1 shows the structural electrical circuit of the proposed device; in fig. 2 - digrams that show his work.

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The control device contains a regenerator 1, a shaper 2 rectangular pulses, an attenuator 3, an adder 4 modulo two, a trigger 5, an integrator b, a generator 7 of a low-frequency signal, a multivibrator 8,

5 element 9 AND, n indicators 10.

The device works as follows.

At the output of the integrator 6, a phase shift clock signal is generated.

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frequencies of the regenerator 1, as two signals are compared — the signal of the second output (input amplifier output) of the regenerator 1 and the clock frequency signal from the third output of the regenerator 1 (Fig. 2a). When a certain threshold is exceeded

7) generator 7

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the frequency signal and the input element 9 And the signal (figb). With an unacceptable deviation of the phase shift of the regenerator 1, regeneration errors occur at the output of modulo 2 modulator 2 (Fig. 2c), which triggers the time of the multicydor 8 (Fig. 2d) with pulse duration C. At the output of element 9 I, a frequency-manipulated signal is obtained, containing information on the three parameters of the regenerator 1: the presence of a linear signal, the magnitude of the phase shift; frequency of regeneration errors; The received signal (Fig. 2e) is transmitted via the remote power supply circuit to the combined inputs of the indicators 10 and the corresponding indicator 10 is triggered.

In the proposed device, three parameters of the regenerator 1 are controlled in a complex. The device is known to detect errors by the method of accumulation, and in the proposed device all of them are transmitted to the indicators 10 and analyzed there. In addition, the device response signal contains information about the three parameters of the regenerator 1

although there is no significant change in the signal structure of the response.

Claims (1)

1. USSR author's certificate No. 515293, cl. H 04 B 3/46, 1975 (prototype). Pvr99.