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Sequential frequency band acquisition apparatus for test and measurement instrument

A technology for measuring instruments and acquisition equipment, applied in the field of continuous frequency band acquisition equipment

Inactive Publication Date: 2011-03-30
TEKTRONIX INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the splitter may degrade the input signal, and the cost of a single oscilloscope channel for such an increase in bandwidth increases to approximately the number of bands times the cost of a normal channel

Method used

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  • Sequential frequency band acquisition apparatus for test and measurement instrument
  • Sequential frequency band acquisition apparatus for test and measurement instrument
  • Sequential frequency band acquisition apparatus for test and measurement instrument

Examples

Experimental program
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Embodiment Construction

[0022] Fig. 1 is a block diagram of an embodiment of a continuous frequency band acquisition device according to the present invention. The collection device includes an input terminal 44 , a digitizer 24 , a bypass path 10 , a frequency shift path 12 , an input switch 20 , and an output switch 22 . Input 44 receives an input signal. The digitizer 24 digitizes the selected signal 46 .

[0023] Using switches 20 and 22 , bypass path 10 can selectively connect input 44 or a frequency-shifted version of input 44 to digitizer 24 . For example, bypass path 10 may connect input signal 44 from input switch 20 directly to output switch 22 and digitizer 24 . When the input switch 20 has selected the bypass path 10 , the input signal 44 passes through the input switch 20 to the bypass path 10 . When the output switch 22 has selected the bypass path 10 , the signal on the bypass path 10 passes through the output switch 22 to the digitizer 24 as the selected signal 46 . For example, b...

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PUM

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Abstract

An acquisition apparatus for a test and measurement instrument includes an input to receive an input signal, a digitizer to digitize a selected signal, a bypass path to selectively couple the input to the digitizer, a frequency shift path to frequency shift the input signal and selectively couple the frequency-shifted input signal to the digitizer, the frequency shift path including a means for frequency shifting, an input switch to switch the input signal to one of the bypass path and the frequency shift path, and an output switch to provide the selected signal to the digitizer by selectively coupling an output of one of the frequency shift path and the bypass path to the digitizer.

Description

[0001] Cross References to Related Applications [0002] Pursuant to 35 U.S.C. §119(e), this application claims priority to U.S. Provisional Application Serial No. 60 / 676,376, filed April 29, 2005, the entire contents of which are hereby incorporated herein by reference middle. technical field [0003] The present invention relates to test and measurement instruments, and more particularly, to continuous frequency band acquisition devices for test and measurement instruments. Background technique [0004] Digital oscilloscopes have limited input bandwidth. The input bandwidth of an oscilloscope limits the bandwidth of the input signal. In US Patent Application Publication 2004 / 0128076 by Pupalaikis et al., a real-time oscilloscope with increased available bandwidth is disclosed. This real-time oscilloscope splits the input signal into multiple split signals. Digitizes a split signal. At the same time, the other split signals are frequency-shifted into baseband signals a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08C19/00G01R13/02
CPCG01R13/0272
Inventor J·J·皮克尔德
Owner TEKTRONIX INC