SU451961A1 - Multichannel Spectrum Analyzer - Google Patents

Description

I

The invention relates to the field of radio measurements in intended for parallel spectral analysis of several electrical processes in real-time.

Known multichannel spectrum analyzers do not provide spectrum indications in the rectangular coordinate system and

real-time signal analysis

time without missing a signal.

The proposed spectrum anahsator is equipped with a slit diaphragm located perpendicular to the light flux, between the rotating disk and the optical system, and the shell is directed along the radius of the disk and perpendicular to the axis of the channels on the electron beam tube.

Due to this, spectral indications in the rectangular coordinate system and real-time analysis without signal transmission are possible.

The drawing shows an optic - mechanical scheme of a multichannel electrical signal spectrum analyzer.

The spectrum analyzer consists of an electron-beam tube 1, a disk 2 with a multi-track recording of a reference signal, an electric motor 3 rotating a disk 2, a slit diaphragm 4, an objective S, a cylindrical lens 6 and a video driver 7.

The analyzer works as follows. Each investigated process IM (i) is transformed on the screen of a cathode-ray tube into a temporary change in the brightness of the beam of the tube, with each Process {Corresponds to - its place on the scan / cloud of the tube along the U coordinate. The image of Kenya on the screen of the tube 1 through a disk 2 with a multi-track recording of a reference cmv ala, rotated by an electric motor 3, and a slit diaphragm 4 located along the axis of the axis, is projected by the lens 5 onto the vidicon 7. A one-dimensional project of a standard liska 2 on a target Vidicon 7, a slit aperture 4 separates a line from the etalon, the frequency of which changes in transparency when the standard rotates linearly increases along the x coordinate. The Y coordinates are the channel number, dg is the frequency (U JK are the coordinates on the target, and jiOHa 7.1. The target potential accumulated over time i is equal to) Wi / ft) tdli4 t de {- and - are constant; angular rotation speed is the radius of the disk. On the display screen - a television network electrically connected to the CMC and having common I and V frame scanning, you can have an image of the signal spectrum in the following coordinates: horizontal (X) - frequency, vertical (U) - channel number; Brightness is spectral density. .- .X The subject of the invention is a real-time multichannel spectrum analyzer of electrical signals containing a cathode-ray tube, a rotating disk with which the light flux from the screen of the cathode-ray tube is modulated by a reference signal, the optical system and the video signal. providing an indication of the spectrum in rectangular coordinates and analyzing in real time without missing a signal, it is equipped with a slit diaphragm located perpendicular to its To the current flow between the rotating disk and the optical system, the slot is directed along the radius of the disk and perpendicular to the axis of the channels on the electron beam tube.