SU911340A1

SU911340A1 - Electron beam oscilloscope

Info

Publication number: SU911340A1
Application number: SU802893253A
Authority: SU
Inventors: Богдан Иванович Проць
Original assignee: Предприятие П/Я В-8751
Priority date: 1980-03-18
Filing date: 1980-03-18
Publication date: 1982-03-07

Description

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Изобретение относитс к электроизмерительной технике и может быть использовано при разработке осциллографической аппаратуры.The invention relates to electrical measuring technology and can be used in the development of oscillographic equipment.

Наиболее близким к предлагаемому изобретению по технической сущности вл етс электроннолучевой осциллограф , содержащий формирователь синхросигналов , вход которого соединен с шиной исследуемого сигнала, а выход,с входом блока автоматического выбора режима и вторым входом триггера, управлени , третий вход которого подключен к выходу блока автоматического выбора режима, первый вход - к выходу блоки-ратора, первый выход к входу блока подсвета луча, а второй выход - к первому входу генератора пилообразного напр жени , второй вход которого св зан с первым выходом коммутатора, а выход - с первым входом усилител горизонтального отклонени и первым входом блока сравнени , выход которого соединен с входом блокиратора, а второй вход - с первым выходом блока изменени уровн , вход которого подключен ко второму выходу коммутатора, причем выход усилител горизонтального отклонени св зан с горизонтально отклон ющими пластинами электроннолучевой трубки, модул тор которой соедин ен с выходом блока подсвета луча 2.The closest to the proposed invention in its technical essence is an electron-beam oscilloscope containing a clock generator, the input of which is connected to the signal bus, and the output, with the input of the automatic mode selection unit and the second trigger input, control, the third input of which is connected to the output of the automatic selection unit mode, the first input to the output of the blocker, the first output to the input of the beam illumination unit, and the second output to the first input of the sawtooth generator, the second input connected to the first output of the switch, and the output to the first input of the horizontal deflection amplifier and the first input of the comparison unit, the output of which is connected to the input of the blocker, and the second input to the first output of the level changing unit, the input of which is connected to the second output of the switch the output of the horizontal deflection amplifier is associated with the horizontal deflection plates of the cathode ray tube, the modulator of which is connected to the output of the beam illumination unit 2.

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Недостатком этого устройства вл етс нестабильность положени линии развертки и ее размера на экране электроннолучевой трубки, обусловленна задержкой сигнала в блоке подсвета луча и особенно заметна в наносекундном диапазоне длительностей развертки.A disadvantage of this device is the instability of the position of the scanning line and its size on the screen of the cathode-ray tube caused by the delay of the signal in the beam illumination unit and is especially noticeable in the nanosecond range of sweep durations.

Цель изобретени - стабилизаци положени линии развертки и ее раз20 мера на экране электроннолучевой трубки.The purpose of the invention is to stabilize the position of the scanning line and its size on the screen of the cathode ray tube.

Claims

The goal is achieved by the fact that the electron beam oscilloscope contains a clock generator, the input of which is connected to the bus of the signal under study, and the output is. with the input of the automatic mode selection unit and the second control trigger input, the third input of which is connected to the output of the automatic mode selection unit, the first input to the output of the blocker, the first output to the input of the beam illumination unit, and the second input to the first input of the sawtooth generator whose second input is connected to the first output of the switch, and the output to the first input of the horizontal deflection amplifier and the first input of the comparison unit, the output of which is connected to the input of the blocker, and the second input to the first output of the block The level change, the input of which is connected to the second output of the switch, the output of the horizontal deflection amplifier is connected to the horizontal deflection plates of the cathode ray tube, the modulator of which is connected to the output of the beam illumination unit by the second output of the level changing block. The drawing shows the block diagram of the device. The device consists of a bus 1 of the signal under study, a synchro generator 2, an automatic mode selector 3, a blocker, a control trigger 5, a beam illumination unit 6, a comparison unit 7, a sawtooth voltage generator 8, a level change switch 9, a horizontal deviation amplifier 11 and a cathode ray tube 12. The device operates as follows. 8, the initial time point of the control trigger is in the low voltage state. After the appearance of the sync pulse at its second input, it switches to the high voltage state and starts the generator 8 of the saw voltage on the first output (a forward run is being formed). When a certain level is reached at a certain voltage level, the comparison unit 7 includes a blocker that converts the control trigger 5 to a low-voltage state, as a result of which the generator 8 of the sawtooth 4 voltage returns to its original state. At the moment of reverse stroke of the saw-tooth voltage, the comparison unit 7 returns to the initial state, providing the possibility of blocking after the time required for the termination of all transients in the sweep generator, to also return to the initial state. After the blocker 4 returns to the initial state, the control trigger 5 is put into the standby mode and is ready to start with the next sync pulse. The sweep speed is set using switch 9. With a sweep duration T of a much longer signal delay time in beam illumination unit 6, the level changing unit 10 is not turned on. The generated sawtooth voltage is fed through a horizontal deflection amplifier to a horizontal deflection plate of a CRT. If the amplitude of the sawtooth voltage of the CRT plates corresponds to the length of the beam line to the full screen, then the length of the visible part of the beam line is B () f, t1) where and is the amplitude part of the sawtooth voltage not illuminated on the CRT screen, CRT, -f- “Considering that when TO t ..., t, f addert, then sweep subranges, when the duration of the forward stroke of the sawtooth voltage is commensurate with the signal delay time in beam illumination unit 6, switch 9 turns on unit 10 level change that shifts the threshold of the block Comparison of the voltage level at the second input of the horizontal deflection amplifier 11 by the value of AI Ib: -1 Tr Chmler. In this case, the sawtooth voltage amplitude increases by the amount and the CRT plates are equal to UYV + + uUK. The length of the visible part of the beam line on the CRT screen is equal to The device provides a beam line size equal to the length of a CRT screen, 59 when switching from one scanning subband to another. Claim of the invention Electron-beam oscilloscope containing a clock generator, the input of which is connected to the signal bus, and an output to the input of the automatic mode selector and a second control trigger input, the third input connected to the output of the automatic mode selector, the first input to the output of the blocker , the first output to the input of the beam illumination unit, and the second output to the first input of the sawtooth generator, the second input of which is connected to the first output of the switch, and the output to the first the horizontal amplifier and the first input o - 6 are compared, the output; (it is costly connected to the blocker input, and the second input is connected to the first output of the level change block whose input is connected to the second output of the switch, and the output of the horizontal deflection amplifier is connected to horizontally deflecting plates of the cathode ray tube, the modulator of which is connected to the output of the beam illumination unit, characterized in that, in order to stabilize the position of the scanning line and its size on the screen of the cathode ray tube, block output variations podklyucher layer to the second input of the amplifier hori Talnoe deflection. Sources of information taken into account during the examination 1. USSR author's certificate for the application of K cells. C 01 R 13 / 2A, 1979 (prototype).