SU536603A1 - Device for remote control of linear regenerators of communication systems with pulse-code modulation and time division of channels - Google Patents

Description

Second connection: with the output of the generator and with the output of an additional generator.

The drawing shows a structural diagram of the proposed device.

The device contains a generator 1 and a successively connected receiver 2 and an indicator 3 at the first terminal station, the second input of which is connected to the generator output /, at the second terminal station a band-pass filter 4, and at the maintenance-free amplifying point a regenerator 5 connected in series by a band. , amplifier 7, first detector 8 and o & a driver, a disturbance bipole pH (BSS) 9, generator 10, second detector 11 and in series | Connected additional band-pass filter 12, amplifier 13, third detector 14, element OR 15 To complement the 1n generator 16, the threshold block 17 is connected between the output of the BSS 9 and the input of the OR element 15, and the input of the band-pass filter 6 and the input of the additional band-pass filter 12 are connected to the input of the regenerator 5, the output of which is connected to the BSS 9, the corresponding input of which the second detector 11 is connected to the output 1 of the generator 10, which is connected to the output of the regenerator 5 and to the output of the additional generator 16.

The device works as follows.

The generator 1, located at the first terminal station, produces a single radio pulse with a filling frequency lying in a frequency band that is free from the constituent spectrum of the digital cr). In the control equipment of the regenerator 5, there is a molar filter 6 separating this radio pulse. After amplification, a detector 7 is detected in the amplifier 7. The signal received at the output of detector 5 is used to start the instrument to detect irregularities of type BSS 9, as well as to start the generator 10, which forms a radio pulse with a filling frequency, where / 1 is the frequency control signals, and a duration equal to the duration of the radio pulse arriving “and the input of the regenerator 5, and lagging behind it by a time equal to the duration of this pulse. The signal received in generator 10 is transmitted to the linear path and fed to the next regenerator. In addition, the same signal, after being detected in detector P, is used to control the end point of the counting violation of the regularity of the alternation of pulses of the digital signal and the instant of reset of the BSS 5. rationality, exceeds the norm, in the threshold unit 17, a signal is generated, fed through an element OR 15 to the generator 16. In the generator 16, a sinusoidal signal with a frequency fz is applied to the linear path. In the event that the regenerator 5 is not the first of the regenerators of the ney path, an analogous signal from the previous regenerator with a Frequency, which is also free from the component of the digital signal spectrum, can be sent to its input other than fi. In that

In this case, such a signal is extracted by a band-pass filter 12 and, after amplification, is detected in detector 14. Then the pulse duration at the output of the element OR 15 is increased. The age of operation of the generator 16 also increases. Similarly, the control sypnal is restored in the following linear path regenerators. Reaching the second terminal station through the bandwidth F1; 1 lgr 4, the signal is transmitted in the opposite direction along the linear path to the first terminal station.

Filter 4 must ensure the passage of frequencies / 1. И / 2- At the first end station, the signal with frequency / 2 is filtered out of the digital signal, amplified in receiver 2 and 1d to indicator 3.

An oscilloscope with an afterglow tube can be used as an indicator;

determined by the start of the pulse from the generators. Then the distance to the oscilloscope screen from the start of the sweep to the beginning of the received signal (a control signal with a frequency / 2 is proportional to 1 the serial number of the regenerator in which the number of regularity violations exceeds the norm (ignoring the propagation time along the linear path). In that case if the total number of controlled regenerators is large, the accuracy of such

mggo.da Nzmere1ni may be insufficient. In this case, a count of time slots may be used. The duration of the signals sent from the generator 1 of the radio pulses that passed from the moment of sending to the Linear path of the radio pulse until the appearance of the response signal.

The proposed device, in comparison with I.Zezestny, provides control of regenerators without interruption of communication and, in addition,

n-use in those communication systems with ICMVD, in which there are no free service l; communication lines.

Claims (2)

1. P. J. Ostler Alarconi Instrumentation, Vol. 13, No. 3, Dec. 1971. 2. ABT. SVID. USSR №272383, M. Kl.2 H 04 B 3/04, 05.02.68 (prototype).  P p fi-5 ai:.: - 1GIU I-paiii I Srnssaa akung-on staniii