SU1256220A1 - Device for checking serviceability of superheterodyne receiver - Google Patents

Abstract

This invention relates to radio. The reliability of the control increases. The device contains a signal simulator 1, a recording unit 2, a correlator 3, a pulse generator (GI) 4, a counter (C) 5, a monitored receiver 6, a decisive block 7, two electrons OR 8 and 9, five electronic keys (EC) 10-14. In the initial state, the EC 10 is open. In the absence of a signal from the correspondent at the output of the receiver 6 and the correlator 3, a signal is formed. O, which includes GI 4. Pulses through EC 14 arrive at C 5. At output C 5, it is logical. A. In the time required for a reliable measurement, the output of the C 5 signal is logical. 1. It switches the output of the GI 4 using the EC 14 to its reverse input. From 5 starts counting in the opposite direction. When a correspondent signal appears at the output of the correlator 3, a logical signal is generated. 1, to-ry closes the EC 10, and through the el-OR 8 - EC 12, which ensures the disconnection of the device from the receiver 6. 1 Il.

Description

The invention relates to radio and can be used to monitor the health of unattended superheterodyne receivers during their operation.

The purpose of the invention is to increase the reliability of the control.

The drawing shows the structural electrical circuit of the device for monitoring the health of the superheterodyne receiver.

The device contains an input signal simulator 1, a recording unit 2, a correlator 3, a generator of 4 pulses, a counter 5, a controlled superheterodyne receiver 6, a block 7, the first 8 and the second 9 elements OR and the first 10, the second 11, the third 12, a quarter 13 and fifth 14 electronic keys.

The device works as follows.

In the initial state, the electronic key 10 is open, the signal from the input signal simulator 1 is fed to the input of the superheterodyne receiver 6 being monitored. In addition, the signal goes through the second electronic to; 1Hyu 11 to the first input of the correlator 3, to the second input of which the signal from the controlled superheterdine receiver 6.

In the absence of a signal from the correspondent at the output of the superheterodyne controlled receiver 6 at the output of the correlator 3, a logical zero signal is generated, which includes a generator of 4 pulses. The impulse comes through the five electronic key 14 to the counting input of the counter 5.

In the initial state at the output of the counter 5 there is a logical zero, which through the first element OR 8 opens the third electronic key 1 The output signal together with the present noise from the output of the superheterodyne receiver 6 being monitored goes to the first input of the decision unit 7. After the time required for reliable Measurement , at the output of counter 5, a signal unit appears, which closes the third electronic key 12, and also through the second element of the IPI 9, closes the first electronic key 10. The signal of the logical unit, except Wow, using the second electronic key 11 connects the first input to the correl

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torus 3 to the input of the superheterodyne controlled receiver 6, and its output using the fourth electronic key 13 to the second input of the repeating unit 7. In this connection, the second input of the solving unit 7 receives the noise voltage of the controlled superheterodyne receiver 6. Signal logical unit from the output of the counter 5, in addition, switches the output of the generator 4 pulses using the fifth electronic key 14 to its reversing input. In this connection, counter 5 starts counting in the opposite direction. When a logical zero appears at the output of the counter 5, the device is reset.

In the case of a correspondent signal at the output of the correlator 3, a logical unit signal is generated, which closes the first electronic key 10 and through the first element OR 8 closes the third electronic module 12, which ensures disconnection of the device from the superheterodyne detector 6 being monitored.

Claims (1)

Invention Formula five 0 five The device for monitoring the health of the superheterodyne receiver, containing the first, second, third and fourth electric keys, the first element of the NL, sequentially connected decisive and registering blocks, the input simulator whose output through the first electric key is connected to the input of the monitored superheterodyne receiver, is tTBa, the output of the first element OR, via the third electronic switch, is connected to the first input of the decision block, the second input of which is through a quarter electron key h is connected to the output of a controlled superheterodyne receiver, which is the output of the device, and to another input of the third electronic key, which is due to the fact that, in order to increase the reliability of the control, a second SHS element and series-connected correlator are introduced into it. pulse generator, five electronic key and counter. 0 312562204 the output of which is connected to the first terminal with the output of the controlled input of the first element OR, to another superheterodyne receiver, and the inputs of the fourth and fifth elec- tro output to the other input of the second electronic keys, to the control input of the second electronic key and through The 5 OR element, the input simulator output, the second OR element, is connected to another input of the first electronic key, the second electronic key, the output of which through the second electron is another output of the fifth electronic signal. The electronic key is connected to the first input of the switch connected to another input of the correlator, the second input of which is counter.