SU1714605A1 - Multichannel signature analyzer - Google Patents

Abstract

The invention relates to computing and can be used in test diagnostic systems. The purpose of the invention is to increase the speed and increase the reliability of the control by providing the ability to control the law of connecting the monitored channels to the inputs of the signature generator. The multi-channel signature analyzer contains a signature driver, a control unit, an indication unit, a multiplexer, an address switch, a pseudo-random number generator, and a decoder. The law of the connection of monitored channels to the inputs of the signature generator is determined by the sequence of not switching the pseudo-random number generator and by the codes of the mode and channel numbers at the inputs of the analyzer, 2 Il.

Description

The invention relates to computing and can be used in test equipment.

The aim of the invention is to increase the speed and reliability of the control by providing the ability to control the law of connecting the monitored channels to the driver inputs.

Figure 1 presents the structural diagram of the proposed analyzer; Figure 2 is a control block diagram.

The multichannel signature analyzer (Fig. 1) contains a n-channel multiplexer 1, a shaper of 2 signatures, an indication unit 3, a control unit 4, a pseudo-random number generator 5, an address switch 6, a decoder 7, mode setting inputs 8, inputs 9, 1-0 and 11 start, stop and reset, respectively, a group of 12 information inputs and a group of 13 inputs specifying the channel number,

The control unit 4 (FIG. 2) contains an OR 14 element, an RS flip-flop 15 and a clock generator 16,

The analyzer works as follows.

Before starting, the signal arriving at the input 11 of the signature analyzer is reset, the generator 5, the driver 2 and the RS flip-flop 15 of the control unit 4, prohibiting the generator 15. After the arrival of the signal, the start at input 9 the RS flip-flop 15 switches G and allows the generator 16, which begins to produce synchronization pulses at the inputs of the imaging unit 2 and the generator 5, the latter is built according to the classical scheme with

using the shift register, the outputs of which are set by the signal at the input 11 in the unit. It is known that when the shift register of the generator of pseudo-random sequences is zeroed, a forbidden situation occurs. It is detected by the decoder 7, at the output of which a signal appears that arrives at the OR element of the control unit and stops the operation of the generator 16.

With the arrival of each clock pulse, a code arriving at the inputs of switch 6 appears at the output of generator 5. From the switch output, this code goes to the address inputs of multiplexer 1. In accordance with the received address, the corresponding information channel of the multiplexer is connected to the signature generator 2, after the next a synchronizing pulse in accordance with the following pseudo-random number connects another information channel, etc. Thus, with the arrival of the next synchronization pulse, information from different inputs of multiplexer 1 is recorded in shaper 2 in accordance with the distribution law of the pseudo-random number generator 5.

With the code on the inputs 8, three analyzer modes can be implemented; the first mode is the generation of pseudo-random sequences to control the connection of the analyzer channels, the second mode is the connection of any of the channels, the number of which is determined by the code on the inputs 13, the third mode is mixed.

Such control of multiplexer 1 allows the analyzer to be configured for any number of inputs (channels), as well as to use a sorting algorithm to localize the fault.

Formula A

A multichannel signature analyzer containing a signature driver, a control unit, an indication unit, and a multiplexer, the output of which is connected to the information input of the driver

The signatures whose outputs are connected to the inputs of the display unit, the output of the control unit is synchronized with the signature generator, the start input and the first input of the control unit are of the same name as the analyzer, the group of information inputs of the multiplexer forms the group of information inputs of the analyzer, reflecting those that, in order to increase speed and increase control reliability, it additionally contains an address switch, a decoder and a pseudo-random number generator, the synchronous input of which is connected output control unit, the installation input

The pseudorandom number generator is connected to the reset input of the control unit and is the analyzer reset input, the address inputs of the multiplexer are connected to the outputs of the address switch, the first

the group of information inputs connected to the group of inputs of the decoder is connected to the group of outputs of the pseudo-random number generator, the output of the decoder is connected to the second input of the control unit, the control inputs of the address switch form the inputs of the analyzer mode, the second group of information inputs of the address switch is a group of inputs assignment numbers

channel.

Phie.1

Fie.2

Claims (1)

Claim A multichannel signature analyzer comprising a signature generator, a control unit, an indication unit, and a multiplexer. the output of which is connected to the information input of the signature generator, the outputs of which are connected to the inputs of the display unit, the output of the control unit - with the clock input of the signature generator, the start input and the first 'stop input of the control unit are the analyzer inputs of the same name, the group of information inputs of the multiplexer forms a group of information inputs of the analyzer, characterized in that, in order to increase performance and increase the reliability of control, it further comprises an address switch, a decoder and a gene a pseudo random number generator whose sync input is connected to the control unit output, the installation input of the pseudo random number generator is connected to the reset input of the control unit and is the input of the analyzer reset, the address inputs of the multiplexer are connected to the outputs of the address switch, the first group of information inputs of which are connected to the group of inputs of the decoder, connected to the group of outputs of the pseudo-random number generator, the decoder output is connected to the second stop input of the control unit, the control inputs of the switch addresses form the analyzer mode job inputs, the second group of information inputs of the address switch is a group of channel number job inputs. Figure 1 9 . t S fifteen 10 n Qm ^ /4 •to fifteen II '··' ------- Fig 2