SU1322369A1 - Device for measuring detonation factor of information storage units - Google Patents

Abstract

The invention relates to instrumentation. The purpose of the invention is to improve the measurement accuracy by reducing the effect on the measurement results of the measurement signal of the signal waveform. From the output 61 of the information loss determination unit 16, a signal is generated, the duration of which is proportional to the duration of the input signal break, which is recorded in the pulse counter 17 in proportion to the duration of the transient in filters 4 and 5. The pulse counter 17 operates in the programmable delay mode, which delays the recording in register 15 at the time of the transition process in filters 4 and 5, due to the break of the input signal. From the group of outputs 43 and 44 of the extreme value determination unit 12, extreme values of digital codes are generated, which are fed to the average value calculation unit 14 and further to the information inputs of the register 15 and output buses 19. 3 sludge. 19 K Sfloxy invasions with to 1 eE SO about:; o Q Figure 1 Task Jv

Description

The invention relates to instrumentation, namely, devices for measuring the detonation coefficient of information tips.

The purpose of the invention is to ensure measurement accuracy by reducing the influence on the measurement results of a measurement signal's signal dropout.

FIG. 1 shows a block diagram of the device; in fig. 2 is a block diagram for determining an extremal number; in fig. 3 is a block diagram for determining information loss.

A device for measuring the detonation coefficient of data storage devices contains a series-connected amplifier 1, a driver 2 pulses, an OR 3 element, a low-pass filter 4, a weighting filter 5, a measuring amplifier 6, a Bypass adapter 7, an analog-to-digital converter 8, and also connected counters1 trigger 9, first and second registers I) and 11, block 12 for determining an extremal number, controlled frequency divider 13, block 14 for calculating the average value, third register 15, block 16 for determining information loss, counting to 17 pulses, slime control guides 18 and 19 output slime.

The block 1 2 for determining the extremal number contains interconnected (Fig. 2) first circuit 20 cara} 1, first, second, third, fourth groups of elements AND 21-24, first and second groups of elements OR 25 and 26, second and third circuits 27 and 28 of the comparison, N, sixth, seventh, eighth groups of elements AND 29-- 32, third and fourth groups of elements OR 33 and 34, first and second elements AND 35 and 36, maximum number register 37, minimum number 38 .cha. In addition, the block 12 for determining the extremal number contains the first and second groups of inputs 39 and 40, the first and second inputs 41 and 42, and also the first and second groups of outputs 43 and 44.

The information loss determining unit 16 comprises a pulse generator 45, a trigger 46, first and second elements 47 and 48, an element OR 49, a first counter 50, a third element AND 51, an inverter 52, a second counter 53, a fourth element And 54, a pulse shaper 55 , the fifth element And 56, the element EXCLUSIVE OR 57, the sixth element And 58, as well as the input bus 59 and the first and second output tires 60 and 61.

A device for measuring the detonation coefficient of data storage devices operates as follows.

The input voltage from the output of the magnetic recording apparatus (not shown) after amplification by amplifier 1 and pulse conversion by shaper 2 is fed to the first input of the element OR 3, as well as to input 59 of the block

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16 determine the loss of information that controls the continuity of the input signal and in case of a break in the input signal (for example, due to the wear of the magnetic tape) fills the gap with a reference frequency. The reference signal from output 60 is fed to the second input of the element OR 3. From the output of the element OR 3, the frequency-modulated pulse signal (frequency modulation due to the detonation of the magnetic recording apparatus) is fed to the input of the low-pass filter 4, which separates the low-frequency component of the measurement signal, which is fed to the input of the weighing filter 5, which forms the frequency response. The measuring signal is then amplified by the measuring amplifier 6, rectified by rectifying: 1 7 and fed to the input of the analog-to-digital converter 8 operating in continuous conversion mode.

From the output of the analog-digital converter 8, the digital information is alternately recorded in registers 10 and 11 by signals from the output of the counting trigger 9 controlled by the signal "End of the conversion from the output of the analog-digital converter 8. The inverted output of the counting trigger 9 also receives a signal that is supplied to the input 41 of the block 12 for determining the extremal number, as well as through the controlled frequency divider 13 to the input 42 of the block 12 for determining the extreme number. The frequency of the output from the controlled splitter 13 frequency is set on buses 18 TASK NO. 1. The output from the controlled splitter 13 frequency through the counter 17 pulses is recorded in the third register 15. The output 61 of the loss determination block 16 information, a signal is generated, the duration of which is proportional to the duration of the break of the input-HOI signal, which is recorded in the pulse counter 17 in proportion to the duration of the transient in filters 4 and 5. The pulse counter 17 operates in the programmable delay mode ki, which performs the delay entry in the third register 15 at the time of transition in the filters 4 and 5 caused by rupture of the input signal. From the group of outputs 43 and from the group of outputs 44 of the extreme value determination unit 12, extreme (maximum and minimum) values of digital codes are generated, which are fed to the average value calculation unit 14, which calculates the average value, then received at the information inputs of the third register 15.

The third register 15 is the output and information from it is fed to the output buses 19.

Claims (1)

Apparatus of the Invention A device for measuring the detonation coefficient of information storage devices, comprising an amplifier connected by an input to an input bus and an output to an input of a pulse shaper connected by an output through a serially connected low-pass filter, a weighing filter, a measuring amplifier and a rectifier to an analog-to-digital input and outputs - with inputs of an average value calculator connected by an output to an input of a third register connected to outputs of an output bus and a synchronizing input to an output of a controlled frequency divider, characterized in that, in order to improve measurement accuracy by reducing the effect on deposition measurements signal of the measuring waveform, put into it - JIV JIV1C p IIC L U U C O G U N I L O G P o m into it into the transducer, connected to the information 10 outputs with information input pulse counter and the element OR    ™ P ° of registers and the synchro-element OR is connected between the output of the forcing output with the input of the counting pulse generator and the input of the filter the trigger connected by the output to the syncro-low frequencies, the loss determination unit nGYY P ™ P is connected by an output to the r n nv Pf output of the pulse former, the first output of the dam is ± and the R ° 3 RU “SCHI OUT is connected to one of the inputs of the dam element of the second register controlled by the DELI OR and the second output to the input of the frequency teller and the unit for determining the extruder of the pulses, turned on by the synchronous switch, the hopping input and the output between the output of this hpp register, control-20 controlled frequency divider and the syncro mtr-o control output e-emitting input of the third register with overlapping rhodgg y rzklu the control inputs to the corresponding inputs to the control buses corresponding to the control buses. and outputs - with inputs of an average value calculator connected by an output to an input of a third register connected by outputs to output buses and a synchronizing input to an output of a controlled frequency divider, characterized in that, in order to improve measurement accuracy by reducing the effect on measurement results of the signal dropout of the measuring waveform, the JIV1C p IIC L U U C O G I N O L O G V iam it has been entered into it a block of information loss determination