Measuring system as well as method for analyzing an analog signal

Patent metadata

Field	Value
Publication number	US-2018335474-A1
Application number	US-201715599164-A
Country	US
Kind code	A1
Filing date	May 18, 2017
Priority date	May 18, 2017
Publication date	Nov 22, 2018
Grant date	—

Abstract

A measuring system has an analog-to-digital converter, an acquisition memory, a processing unit, and a display memory. The processing unit is adapted to decode a digital signal according to a protocol creating a decoded signal and to evaluate the decoded signal at a cursor position. The digital data generated by decoding the decoded signal at the cursor position is stored in the display memory. Further, a method for analyzing an analog signal according to a protocol is shown.

First claim

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1 . A measuring system having an analog-to-digital converter for converting an analog signal into a digital signal, an acquisition memory for storing said digital signal, a processing unit, and a display memory,
said processing unit being adapted to decode said digital signal according to a protocol creating a decoded signal and to store said decoded signal in said acquisition memory, said processing unit being adapted to evaluate said decoded signal at a cursor position generating digital data and to store said digital data of said position in said display memory.

2 . The measuring system according to claim 1 , wherein said measuring system is an oscilloscope or a logic analyzer.

3 . The measuring system according to claim 1 , wherein said cursor position is selected by a user of said measuring system.

4 . The measuring system according to claim 1 , wherein said protocol is a bus protocol.

5 . The measuring system according to claim 1 , wherein said digital data comprises the decoded value of at least one of a frame of said digital signal at said cursor position and a packet of said frame.

6 . The measuring system according to claim 1 , wherein said measuring system comprises a display adapted to display said digital data.

7 . The measuring system according to claim 6 , wherein said display comprises a visualization section, said display being adapted to display at least one of said cursor position and a visualization of at least one of said analog signal, said digital signal, and said decoded signal in said visualization section.

8 . The measuring system according to claim 7 , wherein said display being adapted to display said digital data outside of said visualization section.

9 . The measuring system according to claim 1 , wherein said processing unit is adapted to evaluate said decoded signal at a plurality of positions and to store a plurality of digital data generated.

10 . The measuring system according to claim 9 , wherein said display is adapted to display a plurality of digital data simultaneously.

11 . A method for analyzing an analog signal according to a protocol using a measuring system, comprising the steps of:
converting said analog signal into a digital signal; decoding said digital signal according to a protocol creating a decoded signal; evaluating said decoded signal at a cursor position generating digital data; and storing said digital data of said position in a display memory of said measuring system.

12 . The method according to claim 11 , wherein said decoded signal is stored in an acquisition memory of said measuring system.

13 . The method according to claim 11 , wherein said cursor position is selected by a user of said measuring system.

14 . The method according to claim 11 , wherein said digital data is displayed on a display of said measuring system.

15 . The method according to claim 14 , wherein at least one of said cursor position and a visualization of at least one of said analog signal, said digital signal and said decoded signal is displayed in a visualization section of said display.

16 . The method according to claim 15 , wherein said digital data is displayed outside of said visualization section.

17 . The method according to claim 11 , wherein said protocol is a bus protocol.

18 . The method according to claim 11 , wherein said digital data comprises the decoded value of at least one of a frame of said digital signal at said position and a packet of said frame.

19 . The method according to claim 11 , wherein said decoded signal is evaluated at at least a second cursor position defined by at least a second cursor generating at least second digital data and storing said at least second digital data in said display memory.

20 . The method according to claim 19 , wherein said digital data and said at least second digital data are displayed simultaneously on said display.

Assignees

• Rohde & Schwarz

Inventors

• Freidhof Markus

Classifications

• G01R31/3177 Primary

  Testing of logic operation, e.g. by logic analysers · CPC title

• G01R13/02

  for displaying measured electric variables in digital form · CPC title

• G01R13/30

  Circuits for inserting reference markers, e.g. for timing, for calibrating, for frequency marking · CPC title

• G01R13/0245

  for inserting reference markers · CPC title

• G01R31/3167

  Testing of combined analog and digital circuits {(testing ADC's H03M1/1071)} · CPC title