The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 03, 1985
Filed:
Sep. 19, 1983
Applicant:
Inventor:
Hitoshi Kitayoshi, Gyoda, JP;
Assignee:
Takeda Riken Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324 / ; 364576 ;
Abstract
A signal generator generates a test signal for input to a device under test the output signal of which is subjected to fast Fourier transform analysis by a fast Fourier transformer. A waveform memory is read out in synchronism with data input to the fast Fourier transformer. The waveform memory has stored therein sample values of a composite waveform of a plurality of predetermined spectra. The output read out from the waveform memory is converted by a D/A converter into an analog signal for use as the test signal.