SU864148A1 - Device for converting time scage and digital registering of single electric signals - Google Patents

Description

Traction single electrical signals, containing a block of input igals, a delay line with taps of a read unit, the output of which is connected to the input of the coding unit, the output connected to the input of the calculator unit, is supplied with a wideband shuntor by a second delay line, a plug, an integrator, a trigger unit and a reset unit. the input of which is connected to the second output of the reading unit, and the output to the control of the integrator inputs, the outputs of which are connected to the inputs of the reading unit,. the inputs to the outputs of the keys, the inputs of which are connected to the taps of the first delay line, the beginning of which is connected to the output of the wideband attenuator, and the end to the control input of the readout unit and the output of the second delay line, whose input is connected to the second output of the input signal unit, the first output is connected to the input of a broadband attenuator, and the display unit is connected to the output of the computing unit.

The structural electrical circuit of the device is shown in the CL drawing.

The device consists of -IZ block 1 input signals, a wideband attenuator 2, a first delay line 3 with taps of a second delay line 4, keys 5, integrators 6, a read block 7, a coding block 8, a calculation block 9, a display block 10 and a reset block 11 .

The device works as follows.

The input signal in the form of a voltage drop is supplied through the input signal unit 1 and the wideband attenuator 2 to the delay line 3. The signal attenuated in the WIDE STRAY attenuator 2, with a finite rate, propagates along the delay line 3 and, branching through the open keys 5, is integrated by all the integrators 6.

At the moment when the weakened input signal reaches the last tap of the first delay line by the front, the delayed signal in the delay line 4 starts to close the keys 5 sequentially at time intervals dT, the value of which is determined by the electric length of the delay line 3 between the taps.

After closing the I key 5, the process of integrating the input signal by the respective integrator 6 stops and the voltage on its breathing remains unchanged.

After closing the last p-th key 5, the output voltages of the integrators b are read by the read block 7, which is triggered delayed on the delay line 4 by the signal, and converted in block 8 are sent to the memory cells of block 9

where algorithmic signal processing is performed. The readout unit 7, after reading all the voltages at the outputs of the integrators 6, starts the resetting unit, which with its output pulses clears the memory of the integrators and, thus, prepares the device for a new measurement cycle.

The waveform is reproduced in the display unit (on the display screen).

by discrete value of the signal, determined by the difference of output voltages i + 1 of the 1st and 1st integrators, proportional to the energy of the signal before sampling (gating).

AL, Qa /: Qi 9i4 -, - a

ai-al - 1

uf uT -

D1G

; "1, Я2Л, -. Б, -, - (3.,.,., А" в „.,.,.

The attenuation of the signal received at the signal input of the delay line with taps, an attenuator is necessary to ensure the linear mode of the keys relative to the signal and conditional expansion of the band of the key-controlling signal supplied from the other end of the delay line 3

0 with taps on the same electrodes of the diodes keys.

Since the amplitude of the input signal propagating in delay lines 3 decreases from the beginning

5 lines to the last point, when processing the measurement results, each sample of the sample is multiplied by a weighting factor, which is set during playback

0 rare repetition of voltage drop of known form.

Since the read step determines. with passive circuits, the accuracy of its value is almost equal to the accuracy of producing a delay line with taps with a given electrical length and is approximately 5 ps.

The device improves the accuracy of converting extremely short electrical pulses into

0 as a voltage drop without the use of an extremely short strobe pulse generator.

Claims (2)

1. USSR author's certificate №676934, cl. G 01 R 13/20, 1977. 2. US Patent 3278846, cl. G 01 R 13/20, 1966 (prototype).