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    • 1. 发明授权
    • Wide bandwidth attenuator input circuit for a measurement probe
    • 用于测量探头的宽带衰减器输入电路
    • US07550962B2
    • 2009-06-23
    • US11693631
    • 2007-03-29
    • Ira G. PollockPaul G. ChastainWilliam Q. Law
    • Ira G. PollockPaul G. ChastainWilliam Q. Law
    • G01R1/20
    • H03H7/24G01R1/06766H03H11/24
    • A wide bandwidth attenuator input circuit for a measurement probe has a Z0 attenuator circuit coupled in series with a compensated RC attenuator circuit. The series attenuator elements of the Z0 and the compensated RC attenuator circuits are coupled via a controlled impedance transmission line to the shunt attenuator elements of the Z0 and the compensated RC attenuator circuits. The shunt element of the Z0 attenuator element terminates the transmission line in its characteristic impedance. The junction of the series and shunt attenuator elements are coupled to the input of a buffer amplifier. At low and intermediate frequencies, the compensated RC attenuator circuit attenuates an input signal while at high frequencies, the compensated RC attenuator circuit acts as a short and the Z0 attenuator circuits attenuates the input signal.
    • 用于测量探头的宽带衰减器输入电路具有与补偿的RC衰减器电路串联耦合的Z0衰减器电路。 Z0的串联衰减器元件和补偿的RC衰减器电路通过受控阻抗传输线耦合到Z0和补偿的RC衰减器电路的并联衰减器元件。 Z0衰减器元件的分流元件以其特性阻抗终止传输线。 串联和分流衰减器元件的结点耦合到缓冲放大器的输入端。 在低频和中频下,补偿的RC衰减器电路在高频时衰减输入信号,补偿的RC衰减器电路作为短路,Z0衰减器电路衰减输入信号。
    • 2. 发明授权
    • Wide bandwidth attenuator input circuit for a measurement probe
    • 用于测量探头的宽带衰减器输入电路
    • US07256575B2
    • 2007-08-14
    • US11123752
    • 2005-05-06
    • Ira G. PollockWilliam A. HagerupPaul G. ChastainWilliam Q. Law
    • Ira G. PollockWilliam A. HagerupPaul G. ChastainWilliam Q. Law
    • G01R11/32G01R1/20
    • H03H7/24G01R1/06766H03H11/24
    • A wide bandwidth attenuator input circuit for a measurement probe has a Z0 attenuator circuit coupled in series with a compensated RC attenuator circuit. The series attenuator elements of the Z0 and the compensated RC attenuator circuits are coupled via a controlled impedance transmission line to the shunt attenuator elements of the Z0 and the compensated RC attenuator circuits. The shunt element of the Z0 attenuator element terminates the transmission line in its characteristic impedance. The junction of the series and shunt attenuator elements are coupled to the input of a buffer amplifier. At low and intermediate frequencies, the compensated RC attenuator circuit attenuates an input signal while at high frequencies, the compensated RC attenuator circuit acts as a short and the Z0 attenuator circuits attenuates the input signal.
    • 用于测量探头的宽带衰减器输入电路具有与补偿的RC衰减器电路串联耦合的Z <0> 0 衰减器电路。 Z 0的串联衰减器元件和经补偿的RC衰减器电路通过受控阻抗传输线耦合到Z 0的分流衰减器元件和经补偿的RC衰减器 电路。 Z&lt; 0&gt;衰减器元件的分路元件在其特性阻抗中终止传输线。 串联和分流衰减器元件的结点耦合到缓冲放大器的输入端。 在低频和中频频率下,补偿的RC衰减器电路在高频时衰减输入信号,补偿后的RC衰减器电路作为短路,而Z <0> 0衰减器电路衰减输入信号。
    • 3. 发明授权
    • Wide bandwidth attenuator input circuit for a measurement probe
    • 用于测量探头的宽带衰减器输入电路
    • US07402991B2
    • 2008-07-22
    • US11693628
    • 2007-03-29
    • Ira G. PollockWilliam A. HagerupPaul G. ChastainWilliam Q. Law
    • Ira G. PollockWilliam A. HagerupPaul G. ChastainWilliam Q. Law
    • G01R1/20
    • H03H7/24G01R1/06766H03H11/24
    • A wide bandwidth attenuator input circuit for a measurement probe has a Z0 attenuator circuit coupled in series with a compensated RC attenuator circuit. The series attenuator elements of the Z0 and the compensated RC attenuator circuits are coupled via a controlled impedance transmission line to the shunt attenuator elements of the Z0 and the compensated RC attenuator circuits. The shunt element of the Z0 attenuator element terminates the transmission line in its characteristic impedance. The junction of the series and shunt attenuator elements are coupled to the input of a buffer amplifier. At low and intermediate frequencies, the compensated RC attenuator circuit attenuates an input signal while at high frequencies, the compensated RC attenuator circuit acts as a short and the Z0 attenuator circuits attenuates the input signal.
    • 用于测量探头的宽带衰减器输入电路具有与补偿的RC衰减器电路串联耦合的Z <0> 0 衰减器电路。 Z 0的串联衰减器元件和经补偿的RC衰减器电路通过受控阻抗传输线耦合到Z 0的分流衰减器元件和经补偿的RC衰减器 电路。 Z&lt; 0&gt;衰减器元件的分路元件在其特性阻抗中终止传输线。 串联和分流衰减器元件的结点耦合到缓冲放大器的输入端。 在低频和中频频率下,补偿的RC衰减器电路在高频时衰减输入信号,补偿后的RC衰减器电路作为短路,而Z <0> 0衰减器电路衰减输入信号。
    • 4. 发明授权
    • Method and apparatus for probing
    • 探测方法和装置
    • US08067718B2
    • 2011-11-29
    • US11418994
    • 2006-05-04
    • Robert A. NordstromWilliam Q. LawMark W. NightingaleEinar O. TraaIra G. Pollock
    • Robert A. NordstromWilliam Q. LawMark W. NightingaleEinar O. TraaIra G. Pollock
    • H05B1/02
    • G01R31/2818G01R1/0416G01R1/06772G01R31/2884
    • A probe comprises a small “consumable” probe substrate permanently mounted to a circuit-under-test. The probe substrate includes a high-fidelity signal pathway, which is inserted into a conductor of the circuit-under-test, and a high-bandwidth sensing circuit which senses the signal-under-test as it propagates along the signal pathway. The probe substrate further includes a probe socket for receiving a detachable interconnect to a measurement instrument. Power is alternatively supplied to the probe by the circuit-under-test or the interconnect. When the interconnect is attached, control signals from the measurement instrument are supplied to the sensing circuit and the output of the sensing circuit is supplied to the measurement instrument. In one embodiment, the sensing circuit uses high-breakdown transistors in order to avoid the use of passive attenuation. In a further embodiment, the sensing circuit includes broadband directional sensing circuitry.
    • 探针包括永久地安装到被测电路的小的“可消耗”探针基板。 探针衬底包括插入到被测电路的导体中的高保真信号路径以及当沿着信号路径传播时感测待测信号的高带宽感测电路。 探针基板还包括用于接收与测量仪器的可拆卸互连的探针插座。 通过被测电路或互连将电源交替地提供给探针。 当连接互连时,来自测量仪器的控制信号被提供给感测电路,感测电路的输出被提供给测量仪器。 在一个实施例中,感测电路使用高击穿晶体管,以避免使用被动衰减。 在另一实施例中,感测电路包括宽带方向感测电路。
    • 5. 发明授权
    • Attachable/detachable probing tip system for a measurement probing system
    • 用于测量探测系统的可附接/可拆卸探测尖端系统
    • US07056134B2
    • 2006-06-06
    • US10856230
    • 2004-05-27
    • Jim L. MartinMarc A. GessfordWilliam R. PooleyWilliam Q. LawIra G. PollockWilliam A. Hagerup
    • Jim L. MartinMarc A. GessfordWilliam R. PooleyWilliam Q. LawIra G. PollockWilliam A. Hagerup
    • G01R31/02
    • G01R1/06788G01R1/06711G01R1/06772
    • A attachable/detachable probing tip system (10) has a housing (12) that includes a probing tip mounting member (14) and opposing substantially orthogonal attachment (16, 18) arms extending from the probing tip mounting member. The attachment arms define an inner surface of the probing tip mounting member in which is disposed at least a first a non-compressive set, resilient member (56). First and second probing tips (42, 44) are disposed over the non-compressive, resilient member (56) and secured to the housing by latching means (60, 66, 92, 96, 100, 130). The attachable/detachable probing tip system allows mounting of the probing tips (42, 44) to probing contacts on a device under test without a probe body or probing tip member (38) being attached. The attachment arms (16, 18) allows a probe body or probing tip member (38) to be attached and detached to the probing tip system (10). The probing tip member (38) includes contact pins that engage contact areas (82, 82, 92) of the probing tips (42, 44).
    • 可附接/可拆卸探测尖端系统(10)具有壳体(12),该壳体包括探测尖端安装构件(14)和从探测尖端安装构件延伸的相对的基本正交的附件(16,18)臂。 连接臂限定探测尖端安装构件的内表面,其中至少设置有第一非压缩组合弹性构件(56)。 第一和第二探测尖端(42,44)设置在非压缩弹性构件(56)上方并且通过锁定装置(60,66,92,96,100,130)固定到壳体。 可附接/可拆卸探测尖端系统允许将探测尖端(42,44)安装在被测设备上的探测触点上,而无需探测主体或探测尖端部件(38)被附接。 附接臂(16,18)允许探针主体或探测尖端构件(38)被附接并分离到探测尖端系统(10)。 探测尖端构件(38)包括接合引脚,其接合探测尖端(42,44)的接触区域(82,82,92)。
    • 8. 发明授权
    • Signal acquisition probing system using a micro-cavity laser
    • 信号采集探测系统采用微腔激光器
    • US07187187B2
    • 2007-03-06
    • US11077692
    • 2005-03-10
    • Christopher P. YakymyshynWilliam Q. LawWilliam A. Hagerup
    • Christopher P. YakymyshynWilliam Q. LawWilliam A. Hagerup
    • G01R31/302G01R31/308
    • G01R15/241G01R1/071
    • A signal acquisition probing system uses a micro-cavity laser to acquire an electrical signal from a device under test. The micro-cavity laser has a VCSEL gain medium and an electro-optic optical resonant cavity. The micro-cavity laser is pumped by an external laser source and generates a frequency modulated optical signal derived from the device under test electrical signal creating an electro-magnetic field distribution in electro-optic material in the micro-cavity laser that overlaps the optical path of the optical signal propagating in the electro-optic material. The frequency modulated optical signal is coupled to an optical receiver which converts the frequency modulated optical signal to an electrical signal. The electrical signal is coupled to measurement test instrument for processing and displaying of the electrical signal.
    • 信号采集探测系统使用微腔激光器从被测设备获取电信号。 微腔激光器具有VCSEL增益介质和电光学光学谐振腔。 微腔激光器被外部激光源泵浦,并产生从被测器件电信号得到的调频光信号,从而产生与光路重叠的微腔激光器中的电光材料中的电磁场分布 的光信号在电光材料中传播。 调频光信号耦合到将调频光信号转换成电信号的光接收器。 电信号耦合到测量测试仪器,用于处理和显示电信号。
    • 9. 发明授权
    • Measurement test instrument and associated voltage management system for accessory device
    • 附件装置测量试验仪器及相关电压管理系统
    • US06629048B1
    • 2003-09-30
    • US09718875
    • 2000-11-20
    • William Q. LawKeith A. TaylorBrian E. RhodeferMarvin E. La VoieBarton T. Hickman
    • William Q. LawKeith A. TaylorBrian E. RhodeferMarvin E. La VoieBarton T. Hickman
    • G06F1122
    • G01R1/067
    • A measurement test instrument voltage management system for an accessory device has a accessory device interface that provides a voltage to a memory device in the accessory device. A sensing circuit receives a sensing signal from the accessory device when it is connected to the interface. The sensing circuit generates an interrupt signal that is coupled to a controller. The controller initiates the generation of a clock signal that is coupled to the accessory device through the interface to retrieve accessory device data stored in the device memory. The controller determines if the connected accessory device is a valid device capable of being supported by the measurement test instrument. The controller generates an enable signal for a valid and supported device that is coupled to a voltage switching circuit. The voltage switching circuit generates at least a first output voltage that is coupled to the accessory device via the interface to provide power to the accessory device.
    • 用于附件设备的测量测试仪器电压管理系统具有附件设备接口,其为附件设备中的存储设备提供电压。 感测电路在连接到接口时从辅助设备接收感测信号。 感测电路产生耦合到控制器的中断信号。 控制器通过接口开始生成与辅助设备耦合的时钟信号,以检索存储在设备存储器中的附件设备数据。 控制器确定连接的附件设备是否是能够被测量测试仪器支持的有效设备。 控制器为耦合到电压切换电路的有效且受支持的设备产生使能信号。 电压切换电路至少产生经由接口耦合到附件装置的第一输出电压,以向附件装置供电。