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Patent Searching and Data


Title:
FREQUENCY MEASURING METHOD FOR BURST WAVE
Document Type and Number:
Japanese Patent JP3145525
Kind Code:
B2
Abstract:

PURPOSE: To reduce measurement error and to shorten the time required for measurement by improving the pulse signal counting method when a gate is opened, especially the processing when the gate is closed.
CONSTITUTION: The frequency measuring system for burst wave comprises a section 30 generating a short reference unit time, two sets of main gates 41, 42 and counters 51, 52, a memory 70 for writing in a pulse signal count every reference unit time, and a synchronization gate 40 for controlling them. Pulse signals are counted every reference unit time when a gate is opened and written into the memory 70 and the frequency of a wave to be measured is operated based on the count written into the memory 70 and the writing time, i.e., the number of reference unit times.


Inventors:
Akatsuka, Shigeki
Application Number:
JP1993000021261
Publication Date:
March 12, 2001
Filing Date:
February 09, 1993
Export Citation:
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Assignee:
ADVANTEST CORP
International Classes:
G01R23/10; (IPC1-7): G01R23/10
Attorney, Agent or Firm:
金田 暢之 (外2名)