SU926777A2 - Device for quality control of discrete communication channels - Google Patents

Description

The invention relates to radio engineering. and can be used to automatically measure the grouping error indicator with a digital display.

According to the main author. St. No. 658753, there is known a device for monitoring the quality of discrete communication channels, comprising in series a matching unit, an error detection unit, an AND element, the second input of which through ¹ first delay element is connected to the output of an error detection unit, an OR element of an adjacent error counter, the second input of which is connected with the output of the single error counter, the first and second inputs of which are connected respectively to the output of the error detection unit and the output of the reset signal sensor, and the output of the OR element through the second element _? delay connected to the second input of the element OR G1].

However, the known device has a long monitoring time.

Nel invention - reducing control time.

This goal is achieved by the fact that in the known device for monitoring the quality of discrete communication channels, a series-connected control unit, a division unit, a first decoder, a first key block and an indication unit and a second decoder and a second key block are connected in series, with the input the control unit is combined with the second input of the single error counter, the additional output of which and the output of the counter of adjacent errors are connected respectively to the first and second signal inputs of the division unit, the output of which connected to the input of the second decoder, and outputs the second key block are connected to respective inputs of the indication unit.

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

A device for monitoring the quality of discrete communication channels contains a block

I coordination, error detection unit 2, single error counter 3, adjacent error detection unit, consisting of ₅ AND 5, OR 6, and the first and second delay elements 7 and 8, respectively, 9 adjacent error counter, division unit 10, block

II controls, the first and second decoders 12 and 13, respectively, the first and second blocks 14 and 15 of the keys, respectively, the display unit 16, the sensor 17 of the reset signals.

^fifteen

The device operates as follows.

The signals from the discrete communication channel through block 1 are sent to block 2, which detects errors. When an error is detected, an impulse appears at the output of block 2, which arrives at counter 3, where these pulses are accumulated. At the same time, these same pulses are fed to the input of block 4 for detecting q related errors. If the errors are single, then at the output of block 4 there will be no detection of adjacent errors. In the event of two or more adjacent errors, pulses appear at the output of the block 4 for detecting adjacent errors, which are recorded by a counter 9 of adjacent errors. The sensor 17 generates impulses following with a certain period of time. The next pulse from the sensor 17 writes off the information from the counter 3, and the last one from the counter 9, which is supplied to the division unit 10, preparing the counters -3 and 9 for a new measurement session, and also starts the ₄₀ control unit 11. In block 10, the division is the division of a binary _code; 9 adjacent errors received from the counter, to a binary code, 3 single errors received from the counter. The result of the division goes to the first and second decoders 12 and 13, which control the operation of the first and second blocks 14 and 15 of the bit keys, which in turn control the block 16, which displays the value of the grouping error indicator.

The efficiency gain, measured by the time taken by the grouping indicator, is determined mainly by the time of the division operation by block 10 and is no more than 10 μs.

The use of the proposed device is possible both for visual operational assessment of the quality of discrete channels, and for use in adaptive systems to increase the reliability.

Thus, the proposed device while maintaining the capabilities of the known device can improve the efficiency of monitoring discrete communication channels by automatically calculating the index of grouping errors and display on the display unit.

Claims (1)

(54) DEVICE FOR MONITORING THE QUALITY OF DISCRETE COMMUNICATION CHANNELS The invention relates to a radio engineering technician and can use dp to automatically measure the error grouping indicator with a digital indication. According to the main author. St. No. 658753, a device for monitoring the quality of discrete communication channels is known, comprising in series connection a matching unit, an error input unit, an AND element, the second input of which is connected to the output of the error detection unit through the first delay element, an OR element and an adjacent error counter, the second input connected to the output of a single error counter, the first and second inputs of which are connected respectively to the output of the error detection unit and the sensor output of the reset signals, and the output of the OR element through the second element ki is connected to the second input of OR 1. However, the known device has a long time control. The purpose of the invention is to reduce the control time. This goal is achieved in that a serially connected control unit, a dividing unit, a first decoder, a first key block, and a display unit and serially connected second decoder and a second key block are inserted into a known device for controlling the quality of discrete communication channels. By this, the input of the control unit is combined with the second input of the single error counter, the auxiliary output of which and the output of the adjacent error counter are connected respectively to the second and second signal inputs of the division unit whose output It is connected to the input of the second decoder, and the outputs of the second key block are connected to the corresponding inputs of the display unit. The drawing shows a structural electrical circuit of the proposed device. The device for monitoring the quality of discrete communication channels contains a block 1 of matching, a block 2 of detecting errors, a counter 3 of single errors, a block of 4 detecting adjacent errors consisting of AND5, ORB, as well as the first and second elements 7 and 8, respectively, counter 9 adjacent errors, Division 10 unit, control unit 11, first and second decoder 12 and 13, respectively, first and second key blocks 14 and 15, respectively, display unit 16, reset signal sensor 17. The device works as follows. The signals from the discrete communication channel through unit 1 are received at unit 2, which is detected from the ibyki. When an error is detected, a pulse appears at the output of block 2, which arrives at counter 3, where these pulses accumulate. At the same time, the same pulses are fed to the input of block 4, the detection of adjacent errors. If errors are single, then at the output of block 4 there will be no detection of adjacent pulse errors. In the event of two or more adjacent errors, the output of the block 4 of the detection of adjacent errors is pulses, which are recorded by the counter 9 adjacent errors. The sensor 17 generates pulses following with a certain period of time. The next impulse from sensor 17 records information from counter 3, and the last from counter 9 which is fed to dividing unit 10, preparing counters -3 and 9 for a new measurement session, and also starts control unit 11. In the U block, the binary code from the 9 adjacent errors is divided by the binary code from the 3 single errors counter. The result of the division goes to the first and second decoders 12 and 13, which zvravlut work of the first and second blocks 14 and 15 bit keys 9 74 in turn controlled by the block 16, which displays the value of the error grouping indicator. The efficiency gain, measured by the removal time of the grouping index, is determined mainly by the execution time of the division operative unit 10 and is not more than 10 µs. The use of the proposed device is possible both for visual on-line assessment of the quality of discrete channels, and for use in adaptive systems of accuracy. Thus, the proposed device, while retaining the capabilities of the known device, makes it possible to increase the efficiency of monitoring discrete communication channels by automatically calculating the error grouping indicator and display on the display unit. The invention The device for quality control of discrete communication channels by aut. -sv. No. 658753, characterized in that, in order to reduce the monitoring time, the following connected control unit, divider unit, first decoder, first key block, and decoding unit and serially connected second decoder and second key block are entered, the control unit input being combined with the second input of the single error counter Pz1x errors, the additional output of which and the output of the adjacent error counter are connected respectively to the first and second signal inputs of the division unit whose output is connected to the input of the second decrypt pa, and outputs the second key block are connected to respective inputs of the indication unit. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 658753, class, H 04 B 3/46, 1978 (prototype).