US 12,449,454 B2
Real-equivalent-time oscilloscope
Kan Tan, Portland, OR (US)
Assigned to Tektronix, Inc., Beaverton, OR (US)
Filed by Tektronix, Inc., Beaverton, OR (US)
Filed on Sep. 15, 2023, as Appl. No. 18/468,523.
Application 18/468,523 is a division of application No. 17/182,056, filed on Feb. 22, 2021, granted, now 11,789,051.
Claims priority of provisional application 63/061,098, filed on Aug. 4, 2020.
Claims priority of provisional application 62/980,071, filed on Feb. 21, 2020.
Prior Publication US 2024/0151753 A1, May 9, 2024
Int. Cl. G01R 23/02 (2006.01); G01R 13/02 (2006.01); G01R 23/16 (2006.01)
CPC G01R 23/02 (2013.01) [G01R 13/0218 (2013.01); G01R 23/16 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An oscilloscope having a real-time mode and a real-equivalent-time mode, comprising:
first and second channels;
first and second analog-to-digital converters; and
one or more processors configured to:
during the real-time mode, electrically couple the first channel to both the first and second analog-to-digital converters and uncouple the second channel from the first and the second analog-to-digital converters, and
during the real-equivalent-time mode, electrically couple the first channel to the first analog-to-digital converter and couple the second channel to the second analog-to-digital converter;
wherein during the real-equivalent-time-mode, the one or more processors are further configured to determine, without a trigger and without hardware clock recovery, a frequency of a signal under test received at the first channel, and to reconstruct a representation of the signal under test based on the determined frequency of the signal under test and a sample rate of the first analog-to-digital converter.