SU1499510A1 - Device for monitoring error factor meters - Google Patents

Abstract

The invention relates to telecommunications and can be used to monitor error rate meters in a linear signal of digital transmission systems without interruption of communication. The purpose of the invention is to improve the accuracy of control. The device contains a shift register 1, electr OR 2, el-I 3, inverter 4, r-5 pulses and triggers 6 and 7. The goal is achieved by introducing register 1 and trigger 7, with which the polarity of the signal at the output of the device does not change when the insertion passes through it, which eliminates errors in the digital signal of digital transmission systems. 1 il.

Description

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The invention relates to telecommunications and can be used to monitor error rate meters in a linear signal of a digital transmission system (DSP) without interrupting communication.

The purpose of the invention is to improve the accuracy of control.

The drawing shows a structural electrical circuit of the proposed device.

The device for monitoring error rate meters contains a shift register 1, an element OR 2, an element AND 3, an inverter 4, a generator of 5 pulses, the first 6 and the second 7 triggers.

The device works as follows.

At the first input of the device, an information signal is received, and at the second input - a clock pulse from the transmitting station of the DSP. The output of the device is connected to the linear DSP path. Information pulses are written to the sequential shift register 1. The output of the element OR 2 occurs 1, if the potential at least at one of the inputs of the element OR 2 is different from zero. At the output of the element I 3, a pulse occurs at each clock position when there is 1 at the third output of the sequential register 1, if an insert is not recorded in register 1 (in the first two of its outputs, in this case, O). Information pulses from the third output of register 1 are fed to the information input of the controlled inverter 4, the first trigger 6 is set to one state by a signal from the output of the generator 5 pulses. At the end of the first pulse at the output of the element And 3, the unit from the first trigger 6 is rewritten into the second trigger 7. The unit at the output of the second trigger 7 sets the first trigger 6 to zero and enables the inversion of the linear signal of the DSP at the output of the controlled inverter 4 The next pulse passing through controlled-inverter 4 has the same polarity as the preceding one. At the end of this pulse, the second trigger 7 is also set to zero. Thus, in a linear signal, two pulses of the same polarity are produced. Polarity of this pair im0

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The pulses coincide with the polarity of the previous, subsequent, or subsequent insertion, which is a violation of the linear code algorithm, i.e. an error is generated in the linear signal. If the unit is recorded in the second trigger 7 of pulses immediately preceding the insertion, then the next pulse at the output of the element I 3 coincides in time with the last impulse of insertion at the output of the device. If the unit is written to the second trigger 7 with the last insertion pulse, then the subsequent pulse has the polarity of the preceding insert and returns all the device to the initial state.

In both cases, three pulses of the same polarity are formed in the linear signal, this is also a violation of the linear code algorithm. At the same time, the polarity of the signal at the output of the device does not change at the time it passes through the insertion through it, which eliminates 1e errors in

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Claims (1)

Invention Formula A device for monitoring error rate meters, comprising a pulse generator, a first trigger, an OR element, an AND element whose output is connected to the synchronization input of the first trigger, and an inverter whose output is an output of the device for controlling error ratio meters whose clock input is the first input of the element I, of those who want to, in order to increase the control accuracy, a shift register and a second trigger are introduced, and the output of the pulse generator is connected to the synchronous input of the second trigger, which is connected to the D-BXO-module of the first trigger, the output of which is connected to the setup input of the second trigger and to the control input of the inverter, and the clock input and the first and second outputs of the shift register, whose information input is the signal input of the device for controlling coefficient meters errors are connected respectively to the first input of the AND element and to the first and second inputs of the OR element, the output of which is connected to the second input of the AND element, the third input of which is connected to the signal input of the inverter and to the third in progress of the shift register.