公开(公告)号：US20240230718A9

公开(公告)日：2024-07-11

申请号：US17972297

申请日：2022-10-24

申请人： Keysight Technologies, Inc.

发明人： Hal Robert Paver ,  Michael Thomas McTigue

IPC分类号： G01R1/07 ,  G01R15/22 ,  G01R19/00 ,  G01R19/252 ,  G01R31/302

CPC分类号： G01R1/071 ,  G01R15/22 ,  G01R19/0084 ,  G01R19/252 ,  G01R31/3025

摘要： A system and method are provided for compensating for thermal drift of a probe device. The method includes monitoring a first temperature of a laser source in a sensor head that receives output electrical signals from a DUT and outputs corresponding optical signals; monitoring a second temperature of a photoreceiver in a probe interface that converts the optical signals to electrical test signals to input to the test instrument; calculating a first value of a first bias voltage using the first temperature; applying the first value of the first bias voltage to the laser source to compensate for thermal drift when the first temperature is within a first predefined temperature range; calculating a second value of a second bias voltage for the photoreceiver using the second temperature; and applying the second value of the second bias voltage to the photoreceiver to compensate for thermal drift when the second temperature is within a second predefined temperature range.

公开(公告)号：US20240133921A1

公开(公告)日：2024-04-25

申请号：US17972297

申请日：2022-10-23

申请人： Keysight Technologies, Inc.

发明人： Hal Robert Paver ,  Michael Thomas McTigue

IPC分类号： G01R1/07 ,  G01R15/22 ,  G01R19/00 ,  G01R19/252 ,  G01R31/302

CPC分类号： G01R1/071 ,  G01R15/22 ,  G01R19/0084 ,  G01R19/252 ,  G01R31/3025

摘要： A system and method are provided for compensating for thermal drift of a probe device. The method includes monitoring a first temperature of a laser source in a sensor head that receives output electrical signals from a DUT and outputs corresponding optical signals; monitoring a second temperature of a photoreceiver in a probe interface that converts the optical signals to electrical test signals to input to the test instrument; calculating a first value of a first bias voltage using the first temperature; applying the first value of the first bias voltage to the laser source to compensate for thermal drift when the first temperature is within a first predefined temperature range; calculating a second value of a second bias voltage for the photoreceiver using the second temperature; and applying the second value of the second bias voltage to the photoreceiver to compensate for thermal drift when the second temperature is within a second predefined temperature range.