SU1171733A1 - Device for measuring susceptibility of receprtion electronic facilities - Google Patents

Abstract

A DEVICE FOR MEASURING THE PERMITABILITY OF RECEPTION RADIO ELECTRONIC MEANS, containing a signal generator, first, second and third differentiation units, a frequency meter, a series-level comparing unit connected in series, the input connected to the output terminal of the radio receiver, an adder, a control signal amplifier, and a reference unit, a control unit, an input terminal connected to the output terminal of the radio receiver, an adder, a control signal amplifier, and a control unit, an input terminal of the radio receiver, an adder, a control signal amplifier, and a chord, voltage and recorder, serially connected reference voltage source, trigger element and the first binary static trigger, the first diff block The differentiation is connected in series with the second binary static trigger, the output of which is connected to the control inputs of the voltage meter and frequency meter, the information input and output of which are connected respectively to the output of the signal generator and the second input of the recorder, the transmitting antenna, the first switch, the first stationary contact of which is connected to the input of the transmitting antenna, the receiving antenna, the second switch, the first fixed contact of which is connected to the second fixed contact of the first the switch and the second fixed contact to the output of the receiving antenna, and the input terminal of the radio receiver is connected to the moving contact of the second switch, characterized in that, c. In order to increase speed by increasing the speed of tuning the signal generator, serially connected first frequency detector and Schmitt trigger i, a rectifier, whose input is connected to the radio output terminal (L receiver, and the output to), are inserted into it between the output terminal of the radio receiver and the input of the first differentiation unit. to the second inlet of the adder, the second Schmitt trigger, whose input is connected to the output of the first frequency detector, and the output is connected to the input of the second differentiation unit, the output of which Connected to the second inputs of the second binary static trigger and storage unit, a control unit controlled by an attenuator and sequentially connected by a second frequency detector, whose input is connected to the output of the signal generator, and a third Schmitt trigger, the output of which is connected to the second through a third differentiation unit the input of the first binary static trigger, the output of which is connected to the input of the control unit, the input of which is connected to the control input of the signal generator, the output of which is connected ene to the signal input of a controllable attenkzatora, signal output and a control input koto

Description

The connectors are connected respectively to the switch and the output of the amplifier-movable contact of the first switching signal.

1171733

The invention relates to radio metering technology and can be used to automatically measure and record the susceptibility of radio receiving electronic means through side reception channels (PEP) and their frequencies. The purpose of the invention is to increase the fastness by increasing the tuning rate of the signal generator. FIG. Figure 1 shows the structural electrical circuit of the proposed device; in fig. 2 - diagrams on the views, which explain the operation of the device. The device for measuring the susceptibility of the radio-electronic reception means comprises a signal generator 1, a control attenuator 2, a first switch 3 with contacts 3.1, 3.2 and 3.3, a second switch 4 with contacts 4.1,4.2 and 4.3, transmitting 5 and receiving 6 antennas, the first and second Frequency detectors 7.1 and 7.2, first, second and third IITit 8.1, 8.2 and 8.3 triggers, control unit 9, storage unit 10, control amplifier 11. signal, rectifier 12, first, second and third differentiation blocks 13.1, 13.2 and 13.3, first and second binary static triggers 14.1 and 14.2, recorder 15, adder 16, block 17 generation comparing level, trigger element 18, source 19, a reference voltage, a frequency meter 20, a voltage meter 21, a radio receiver 22. The device operates as follows. The frequency of the signal generator 1 is set to the lower limit of the measurement range i (Fig. 2d, i 0). To the input of the radio receiver 22, the first and second binary time triggers 14.1 and 14.2 of the initial time level signal Hdop are supplied with a logic O. At this, voltages are generated at their outputs, which are fed to the control unit 9 and the control inputs of the frequency meter 20 and the voltage meter 21. From the source 19 of the reference voltage, the closure of the contact button of the trigger element 18 is supplied to the first input of the first binary static trigger 14.1, and which transfers it to the logical 1 position. At the output of the first binary static trigger 14.1, a voltage is generated (Fig. 28), which, arriving at the servo drive of the control unit 9, carries out a smooth tuning of the frequency of the signal generator 1 in the measurement frequency range if (FIG. 2a) -. When the frequency of the generator 1 of the signals coincides with the passband of the first side reception channel, the output of the radio receiver 22 generates a signal c, which, passing through the rectifier 12, enters the signal Lj to the second input of the adder 16, to the first input of which the reference signal is output block 17 of the opposite polarity (-Up) At the output of the adder 16, the signal of DC j lj-C is outputted, which is fed to the input of the amplifier 11 of the control signal. From its output, the amplified signal is fed to the control input of a controlled attenuator 2, made on pjn-diodes, reducing the input signal level of radio receiver 22 and, accordingly, the & U value. The change in the control voltage corresponds to the amplitude-frequency characteristic of the side reception channel, since the input signal level of the radio receiver 22 is uniquely related to the magnitude of the control voltage. At the same time, the control voltage is applied to the input of the storage unit 10. When the frequency of the signal generator 1 coincides with the lower boundary of the passband of the first side channel of the radio receiver 22-11, the output of the first frequency detector 7.1 tuned to the resonant frequency 1d of the radio receiver intermediate frequency amplifier 22 (Fig. 26) produces a negative voltage and j (Fig. 2 (), which translates the first Schmitt trigger 8.1, performed on pn-p-transistors, to the logical state 1. At its output, the voltage (/ y (Fig. 2i, tt,), which, after differentiation by the first differentiation unit 13.1 (Fig. 2a, i), a negative pulse U, translates the second binary static trigger 14 to the logical 1 state. A voltage is produced at its output (Fig. 2, ii |), which converts the frequency meter 20 and the voltage meter 21 to the measurement mode. The maximum value of the control voltage corresponding to the susceptibility of the radio receiver 22 via a side reception channel is measured by the meter 21 voltages The results of measuring the susceptibility level of the radio receiver 22 via the side reception channel and its frequencies are recorded by the recorder 15. When the frequency of the signal generator 1 coincides with the upper limit of the passband of the first side channel of reception of the radio receiver 22 i | + ui, at the output of the first frequency detector 7.1, you are releasing 334 334 positive voltage (Jy, which puts the second Schmitt trigger 8.2, performed on Г1-р-п-traneistors, in the state of logical O. At its output a voltage jump and ( Fig. 2e, i -t), which is differentiated by the second differentiation unit t3.2 and negative pulse O ,, (Fig. 2), translates the second binary static trigger 14.2 into the logical O position. The frequency meter 20 and the voltage meter 21 are turned off, and reset pulse 1 (Fig. 2, working out the second block 13. 2 differentiation, the storage unit 10 returns to its original state. When the frequency of the signal generator 1 coincides with the passband of the next side reception channel, the whole process repeats. When the upper frequency of measurement range 1 is reached, the output of the second frequency detector 7.2 tuned to this frequency f , the voltage U, j (Fig. 2i) becomes equal to zero, forms at the output of the third Schmitt trigger 8.3 a voltage jump (1,., (Fig. 2k, t) which, after being differentiated by the third differentiation unit 13.3, by an impulse (J ,. (Fig. 2 /, i)) returns the pegive binary static trigger 14.1 to the logical O position, the voltage U, becoming equal to zero (Fig. 2, i, {j,) and the frequency tuning of the signal generator 1 stops;.

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Claims (1)

DEVICE FOR MEASURING SUSCEPTIBILITY OF RECEIVING RADIO ELECTRONIC MEANS, comprising a signal generator, first, second and third differentiation units, a frequency meter, a coupler generating a level of comparing, the input of which is connected to the output terminal of the radio receiver, an adder, a control signal amplifier, a memory unit, a voltage meter and a recorder connected in series with a reference voltage source, a trigger element and a first binary static trigger, wherein the first differential unit The signal is connected in series with a second binary static trigger, the output of which is connected to the control inputs of the voltage meter and frequency meter, the information input and output of which are connected respectively to the output of the signal generator and the second input of the recorder, the transmitting antenna, the first switch, the first fixed contact of which is connected to the input of the transmitting antennas, a receiving antenna, a second switch, the first fixed contact of which is connected to the second fixed contact of the first switch, a second fixed contact - to the output of the receiving antenna and radio input clamp is connected to the movable contact of the second switch, characterized in that a. In order to improve performance by increasing the speed of tuning the signal generator, the first frequency detector and Schmitt trigger are connected in series between the output terminal of the radio receiver and the input of the first differentiation unit, the rectifier, the input of which SS is connected to the output terminal of the radio receiver, and the output to the second input of the adder, the second Schmitt trigger, the input of which is connected to the e! output of the first frequency detector, and the output is connected to the input of the second differentiation unit, the output of which is connected the second input of the second ^one of the binary static trigger ', and the storage unit, the control unit controlled attenuator and a serially connected second frequency detector having an input connected to the output of the signal generator, and a third Schmitt trigger, the output of which through the third differentiating unit is connected to the second input of the first binary static trigger, the output of which is connected to the input of the control unit, the output of which is connected to the control input of the signal generator, the output of which is connected to the signal input controlled attenuator, a signal output and a control input kotoSU "., 1171733 cerned are respectively connected to the amplifier output and lyuchatelya upravpodvizhnym perek--governing pin of the first signal. ¹