公开(公告)号：US20240369665A1

公开(公告)日：2024-11-07

申请号：US18652163

申请日：2024-05-01

Applicant: Tektronix, Inc.

Inventor： Daniel G. Knierim ,  Noah Brummer ,  Roger D. Bighouse

IPC: G01R35/00 ,  G01R1/067 ,  G01R13/02

Abstract: A test and measurement accessory has an input to receive an input signal from a device under test (DUT), a pilot signal generator to generate a pilot signal, an E/O converter to convert the input signal and the pilot signal to a combined optical signal, an O/E converter to convert the combined optical signal to a combined electrical signal, a signal separator to separate the pilot signal from the combined electrical signal, an amplitude detector to determine amplitude of the separated pilot signal, and circuitry to adjust a gain of a signal path using the amplitude. A test and measurement accessory has an input to receive an input signal from a DUT, an E/O converter to produce an optical signal, an optical splitter to split the optical signal into a feedback portion and a remaining portion, a feedback photodiode to produce a feedback electrical signal to adjust the optical signal.