Title:
WIDE BAND SIGNAL ANALYZER
Document Type and Number:
Japanese Patent JP3431544
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To allow the formation of a wide band-ranging at a low cost while restraining the deterioration of a characteristic to the minimum, and to realize an event trigger function.
SOLUTION: A FIFO memory 28 stores the second digital signal and reduces its transfer speed. A multiplexer(MPX) 30 outputs selectively either of the first digital signal or an output signal of the memory 28. A DSP 18 FFT-operates an output signal of the MPX 30. A memory 20 stores an operated result of the DSP 18. A trigger detector 32 compares an operated result of the first digital signal by the DSP 18 with a prescribed trigger condition data to generate a trigger signal when a trigger condition is satisfied. A memory controller 34 controls a storing operation for the FIFO memory 28 in response to the trigger signal. A data to be remained in the FIFO memory 28 out of data generated by a wide band signal processing means is thus controlled in response to a trigger function.
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Inventors:
Akira Nara
Application Number:
JP22612399A
Publication Date:
July 28, 2003
Filing Date:
August 10, 1999
Export Citation:
Assignee:
Tektronix International Sales GmbH
International Classes:
G01R23/16; G01R23/173; (IPC1-7): G01R23/16; G01R23/173
Domestic Patent References:
| JP62225964A | ||||
| JP526921A | ||||
| JP10170567A | ||||
| JP61115978U | ||||
| JP5857977U |
Attorney, Agent or Firm:
Kunio Yamaguchi (2 outside)