Title:
【発明の名称】トリガ制御装置
Document Type and Number:
Japanese Patent JPH0750125
Kind Code:
B2
Abstract:
A method and apparatus prevents unwanted synchronization from obstructing a data acquisition instrument operator's view of N multiplexed signals synchronized to a high speed system clock being used to trigger an instrument through a prescaler with a fixed prescaling factor M, where N and M are related by a common factor. During a time while the instrument, for example, an oscilloscope, is ignoring trigger input information, a desynchronizing signal is applied to the prescaler, causing it to miss a random number of counts or causing it to count incorrectly. Thus, when the oscilloscope resumes triggering it is likely to be synchronized to a different combination of the multiplexed signals. This technique can be applied to individual data points or to records containing a number of data points. By accumulating a number of records obtained in this way and superimposing them on the display, or by simply displaying them very rapidly so that the averaging effects of the human eye cause them to appear to be superimposed, these composite records effectively include complete information about the full set of multiplexed signals.
Inventors:
Roy Walter Luwaren
Application Number:
JP20485491A
Publication Date:
May 31, 1995
Filing Date:
July 19, 1991
Export Citation:
Assignee:
TEKTRONIX,INC.
International Classes:
G01R13/28; G01R13/32; H04R25/00; (IPC1-7): G01R13/28; G01R13/32
Domestic Patent References:
| JP6479666A | ||||
| JP5892960A | ||||
| JP5437512B2 |
Attorney, Agent or Firm:
Sony Tektronix Inc.
Next Patent: ファラデー効果を有する光センサから出力される信号の処理装置