SU1494229A1 - Device for measuring confidence and error distribution - Google Patents

Abstract

The invention relates to telecommunications. The purpose of the invention is to improve the measurement accuracy. The device contains an error detection unit 1, an installation unit (CU) 2 of analysis interval duration, a CU 3 number of information blocks, a CU 4 information block lengths, a counter 5, an analysis block 6, a decoder 7, a display unit 8 and a control unit 9. After execution full measurement cycle, in which a specified number of blocks passes through CU 3, decoder 7 detects overflow of counters and generates a signal for COO 2, which ends the measurement cycle. In this case, in BU 3, the total number of blocks is recorded, in counter 5, the total number of errors, and in analysis block 6, the number of blocks affected by errors of each multiplicity is recorded. The obtained results are output from the device with the help of the display unit 8. The device also has a mode for automatically conducting many measurement cycles. The goal is achieved by the introduction of the CU 3 and the decoder 7. 1 Il.

Description

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innovations (CU) 2, the duration of the analysis intervals, CU 3, the number of information blocks, CU 4, the lengths of information blocks, counter 5, analysis block 6, decoder 7, display block 8 and control block 9. After completing the full measurement cycle, in which the specified number of blocks passes through the CU 3, the decoder 7 detects the overflow of counters and generates a signal for COO 2 that ends

The device relates to telecommunications and is intended to measure the reliability and distribution of errors in discrete and digital communication channels in the form of the number of errors in blocks of information of a certain duration.

The purpose of the invention is to improve accuracy.

The drawing shows structures7S

on the electrical circuit of the device.

The device for measuring the accuracy and distribution of errors contains an error detection block 1, a block 2 for determining the duration of analysis intervals, a block 3 for establishing the number of 30 information blocks, a block 4 for setting the length of information blocks, a counter 5, an analysis block 6, a decoder 7, a block 8 for display and block 9 controls

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Block 2 consists of keys 2-1, 2-2, RS flip-flop 2-3, elements OR 2-4 and 2-5J block 3 - from memory block 3-1 and counter 3-2J block 4 - from block 4 -1 memory and counter 4-2; unit 6 - 40 from counter 6-1, delay element 6-2, decoder-demultiplexer 6-3 "counters 6-4J; block 8 — from switch 8-1 and indication block 8-2.

The device works as follows as once.

Before measurements, the length of the information block and the number of information blocks are determined using block 4-1 of block 4, block 3-1 of block 3. CQ

On the Start signal, all the counters of the device are reset to the initial state and the output of the OR element 2–4 of block 2 causes an impulse to cause the RS-flip-flop 2-3 to open the first and second keys 2-1 and 2-2. Through the open first; key 2-1 error signals detected in block 1 of the error detection begin

There is a measurement cycle. In this case, in BU 3, the total number of blocks is recorded, in counter 5, the total number of errors, and in block 6 of the analysis, the number of blocks affected by the error is recorded, by blocks of each multiplicity. The results obtained are obtained from the device using the display unit 8, V There is also an automatic mode for carrying out many measurement cycles. The goal is achieved by the introduction of BU 3 and a decoder 7.1 sludge.

arrive at the counter 5 of the total number of errors and at the first input of the counter 6-1 the number of errors in block 6, and the clock pulses with the opening in block 2 of the second key 2-2 arrive at the input of counter 4-2 of the block length in block 4.

When the counter 4-2 of the block length overflows, an impulse appears at the output of the input of delay element 6-2, increases by one the contents of the counter 3-2 of the number of blocks in block 3 and writes to that of counters 6-4 of block 6 whose input is currently connected to the nepBbLM input of the decoder-demultiplexer 6-3, and which input of which of the counters 6-4 is connected to the first input of the decoder-demultiplexer 6-3, is determined by the number of errors in the information block fixed by the counter 6-1 numbers are in the block, from the output of which a control decoder demul- tipleksorom-6-3 (the second through the last entry). After recording the pulse, the pulse from the output of delay element 6-2 zeroes the counter 6-1, thereby preparing it to count the number of errors in the next block of information, which starts with the next clock and fflyly.

In the absence of errors in the information block, the contents of counters 6-4 do not change, and when the number of errors in the block exceeds the maximum recorded multiplicity of damage K, the content of the counter that records the number of blocks with a multiplicity of damage greater than K increases by one. Thus, the count of the number of errors in each block and the number of blocks with each multiplicity of damage, with counter 5 (the total number

errors count the total number of errors in all past blocks of information.

When the counter overflows 3-2 block 3, i.e. when passing a specified number of blocks (performing a full measurement cycle), at the second output of the counter 3-2 of the number of blocks, a pulse appears at the first input of the decoder 7, the signal from the output of which through the second element OR 2-5 of block 2 goes to R- RS-flip-flop input 2-3, which closes the keys 2-1 and 2-2. The measurement cycle is complete.

However, the measurement cycle may end when one of the B-6-4 overflows. The decoder 7 decrypts the overflow and at its output appears sig} 1al, which through the second element OR 2-5 enters the R-input of the RS flip-flop 2-3, which closes the keys 2-1 and 2-2, which ends the measurement cycle . In addition, there is a manual stop mode using the Stop button (manual).

Thus, at the end of the cycle in the counter 3-2 the number of blocks of block 3 recorded the total number of blocks, in counter 5 of the total number of errors - the total number of errors, and in the counters - the number of blocks affected by errors of each multiplicity. The outputs of all these counters are connected to the corresponding inputs of the switch 8-1.

The contents of the counters are output from the device using display unit 8. Under the action of the control unit 9, the switch 8-1 sequentially outputs the information contained in the meters to the display unit 8-2 and the output terminal of the device to which the digital information receivers can be connected.

In addition, there is an automatic mode for carrying out many measurement cycles, for which the signal to start the measurement from the first output of the control block 9 is sent through the first element OR 2-4 to the S input of the RS flip-flop 2-3 of block 2, and the signal about the end of the measurement cycle with output

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Decoder 7 is fed to the input of the control unit 9.

Claims (1)

Formula invented A device for measuring the value and distribution of errors, containing the analysis unit, the unit controlling the unit for setting the length of information blocks and the serially connected unit for detecting errors, the unit for setting the duration of the analysis interval, the counter and the unit displaying the second inputs of which are connected to the corresponding outputs block, the input of the error selection block is the first input of the device, the eye and the third inputs of which are, respectively, the second and third inputs of the block for setting up long analysis intervals, another output p It is connected to the input of the block for setting the length of information blocks, which is characterized by the fact that, with increasing accuracy, a successively connected block for establishing the number of blocks of information has been entered: a decoder, the output of which is connected to the fourth input of the block; is the fourth input of the device, and the first output is connected to the first input of the analysis block, the second input of which is connected to the output of the block for establishing information blocks and the input of the block for determining the number of information blocks , the first output of which is connected to the third input of the display unit, and the second output - to the first input of the decoder, the second inputs of which are connected to the corresponding outputs of the analysis unit, the output of which is connected to the first input of the control unit, the first output of which is connected to the sixth input of the unit for determining the duration of the analysis intervals, and the second output to the fourth input of the display unit; output  Editor M.Petrova The projection is the output of the device. Compiled by V.Kamal gin Tehred M. Didyk Proofreader And Muska 0 five 0 five 0 five 0 five 0 The decoder 7 is fed to the input of the control unit 9. Invention Formula A device for measuring reliability and error distribution, comprising an analysis unit, a control unit, an information unit length setting unit and serially connected error detection unit, an analysis interval duration setting unit, a counter and a display unit, the second inputs of which are connected to the corresponding outputs of the analysis unit, the input of the error extraction block is the first input of the device, the second and third inputs of which are the second and third inputs of the duration setting block, respectively. Analysis intervals, another output of which is connected to the input of the block for setting the length of information blocks, characterized in that, in order to improve the accuracy, sequentially connected blocks for determining the number of information blocks and a decoder are entered, the output of which is connected to the fourth input of the block for determining the duration of analysis intervals, the fifth the input of which is the fourth input of the device, and the first output is connected to the first input of the analysis unit, the second input of which is connected to the output of the block for setting the length of the information blocks and with the input of the block for determining the number of information blocks, the first output of which is connected to the third input of the display unit, and the second output - to the first input of the decoder, the second inputs of which are connected to the corresponding outputs of the analysis unit, the output of which is connected to the first input of the control unit, the first output which is connected to the sixth input of the unit for determining the duration of the analysis intervals, and the second output to the fourth input of the display unit, the output of which is the output of the device.