336 results about "Contact test" patented technology

A wafer test assembly includes multiple probe head substrates arranged like tiles with connectors attached to one side and probes supported on the opposing side. In one embodiment, flexible cable connectors directly connect the connectors on the probe head tile to a test head, while in another embodiment the flexible cables connect the probe head tile to a PCB providing horizontal routing to test head connectors. In one embodiment, leveling pins provide a simplified support structure connecting to a retaining element attached to the tiles to provide for applying a push-pull leveling force. A test head connector interface frame enables rearrangement of connectors between the test head and the probe card to provide for both full wafer contact or partial wafer contact. The test head connectors are rearranged by being slidable on rails, or pluggable and unpluggable enabling movement over a range of positions.

A peripheral card includes a circuit board, various circuit elements on the circuit board, a set of user terminals, a set of test terminals, and an enclosure that covers a portion of the circuit board and the circuit elements. The enclosure does not cover the user terminals and test terminals. After the peripheral card is tested, the test terminals are covered with a conformal contact coating in order to prevent access to the test terminals.

An elastomeric article having reducing microbe affinity and transmission and methods for applying and immobilizing antimicrobial compounds to the elastomeric substrate surface are disclosed. The elastomeric article has a body formed of a natural or synthetic polymer latex having an outer surface and an inner surface. The body has a coating of an antimicrobial agent over at least a portion of said outer surface. The treatment involves applying according to either a spraying or dipping process an antimicrobial polymer or composition to a surface of the elastomeric substrate; binding the antimicrobial composition to the surface in a manner such that said treat antimicrobial coating passes either one or another or both versions of a zone of inhibition test, such test including: a) a dry-leaching or agar-plate-based contact test, according to AATCC 147 protocol, or b) a wet-leaching or dynamic shake flask test according to ASTM E-2149-01 protocol. The substrate is further subject to a rapid germicidal contact-transfer test of relatively short duration. The antimicrobial polymer can include an organosilane quaternary ammonium or a biguanide compound which can disrupt the ionic charges of microbial cellular membranes.

A plurality of semiconductor devices is placed in pockets of a tray with terminal surfaces facing upward. Positions of bump terminals of the semiconductor devices are adjusted relative to the tray. The tray is successively moved such that the bump terminals of the semiconductor devices are successively placed at a testing position. The semiconductor devices are successively tested at the testing position by, for example, contacting test electrodes to the bump terminals.

The invention discloses a track parameter dynamic test car based on a combination of an inertial sensor and a navigational satellite. The track parameter dynamic test car based on the combination of the inertial sensor and the navigational satellite comprises a car body assembly, an inertial sensor assembly, a navigational satellite mobile station assembly, a navigational satellite base station assembly, a track distance measuring assembly, a speedometer assembly and a track test car control computer assembly. The track parameter dynamic test car based on the combination of the inertial sensor and the navigational satellite can automatically complete dynamic detection of nine track parameters such as height, track direction, distortion, level and superelevation, twist warps, plane degree, track distance, turn radius and mileage and the like after running on a track to be tested, achieves no-contact test, and achieves the highest test speed which is 60Kg/h. The track parameter dynamic test car based on the combination of the inertial sensor and the navigational satellite has the advantages of high and steady measurement accuracy, simple structure and easy operation, and is beneficial to generalize and use.

The present invention provides a semiconductor test apparatus that can reduce influence of noise in high-frequency measurement and that can be manufactured inexpensively by simplification of the constitution. A semiconductor test apparatus according to the present invention is one for use in an electrical test of a semiconductor wafer in which numerous integrated circuits each having electrode pads are incorporated. It comprises a probe card and a tester having a connection portion to the probe card. The probe card has numerous probes that can be connected to the electrode pads of the semiconductor wafer and a probe board having on one surface probe lands to which the probes are attached, having on the other surface tester lands corresponding to the probes, and having wiring paths each connecting the probe land and the tester land corresponding to each other. The tester is directly connected to the probe card as the connection portion contacts the tester lands.

A novel device, method and systems disclosed managing the thermal challenges of LIBS laser components and a spectrometer in a handheld structure as well the use of simplified light signal collection which includes a bare fiber optic to collect the emitted light in close proximity to (or in contact with) the test material. In one example embodiment of the handheld LIBS device, a burst pulse frequency is 4 kHz is used resulting in a time between pulses of about 250 μs which is a factor of 10 above that of other devices in the prior art. In a related embodiment, an active Q-switched laser module is used along with a compact spectrometer module using a transmission grating to improve LIBS measurement while substantially reducing the size of the handheld analyzer.

A method and apparatus for contact testing a plurality of devices under test, either sequentially or simultaneously. In a first test phase it is determined whether the test probe to each contact is shorted to the most negative rail. In a second phase it is determined whether the test probe has made proper contact, and whether ESD diodes on the devices under test are functional. In both test phases a negative pulse is generated on a tester bus and applied to the contact by the test probe. In the first test phase the positive rail of the device under test is grounded; in the second test phase the positive rail of the device under test is made positive. The negative rail of the device under test is connected to the negative rail of the tester. In both test phases, upon termination of the negative pulse, the bus is restored to a positive voltage which is dependent upon the condition of the contact and the condition of expected input devices at the contact. The bus voltage is measured in accordance with a logic which determines the condition of the contact and the condition of expected input devices at the contact. Data signals for functional testing of the device under test are can be applied to the bus through an isolating driver which preserves the logic of the contact test.

The invention provides an experiment device for researching the jet atomizing characteristic of a jet nozzle. The experiment device can provide a fuel gas environment similar to a fuel gas-vapor type launch power device, simulate the pressure intensity, the temperature, the speed and other parameters of airflow behind the jet nozzle, provide various test interfaces including a conventional test means and a non-contact test means; and in addition, the experiment device can obtain the jet atomizing characteristic of a jet nozzle for the researches on primary atomizing of cooling water at the outlet of the jet nozzle, secondary atomizing and vaporizing of the cooling water in lateral high-speed flue gas flow, water-vapor two phase flow with phase changes and other complicated flowing processes in the fuel gas-vapor type launch power device used for underwater launch, and provide a theoretical basis for the design of the fuel gas-vapor type launch power device.

Provided are a semiconductor memory device and a test method thereof. The semiconductor memory device includes: a die in which a plurality of internal circuits are integrated; a plurality of first and second channel pads having a first pad size and a first pad pitch, disposed in an alternating manner in a straight line at a center part of the die, and divided into a plurality of parallel rows, wherein the plurality of first and second channel pads are configured to selectively contact test probes in an alternating manner to receive an external wafer test signal and to output a signal generated by the plurality of internal circuits to the exterior. Therefore, it is possible to perform a test using plural channel pads during a wafer test of the semiconductor memory device using a plurality of probes of a probe card without incorrect contacts or non-contact with adjacent pads.

A multi-functional precious stone testing apparatus includes a portable housing, a testing unit, and an indication unit. The portable housing includes a hand-held casing and a probe casing extended from a front end of the hand-held casing. The testing unit includes a conductive probe having a testing end portion extended out of a tip end of the probe casing for contacting a testing object to determine a conductivity of the testing object. The indication unit includes a LED light unit received in the hand-held casing for illuminating the testing end portion of the conductive probe during testing, wherein the LED light unit is positioned away from the tip end of the probe casing for preventing heat generated from the LED light unit being transmitted toward the conductive probe to affect an accurate measurement for the conductivity of the testing object.

A probe for measuring radio frequency/electromagnetic interference (RF/EMI) is used in combination with a spectrum analyzer or oscilloscope (measuring equipment) to measure and/or test for EMI in electronic equipment. The RF/EMI probe has high dielectric transformer isolation between the input of the measuring equipment and the circuit under test so as to prevent damaging the measuring equipment if a high voltage or current is encountered in the circuit being tested. The RF/EMI probe comprises a measurement tip connected to a shielded sense line, the shielded sense line is electro-magnetically coupled to a toroid forming a RF transformer, a high impedance termination load is connected to the shielded sense line, a shielded coaxial cable having a center conductor connected to a secondary winding on the toroid transformer, the shielded coaxial cable being adapted for connection to an input of the measuring equipment. The shield of the coaxial cable is continuous between the input connector of the measuring equipment and a shielded enclosure surrounding the toroid transformer. The coaxial cable may terminate in a RF connector, e.g., BNC and the like, for quick connection to and disconnection from the measuring equipment.

The invention discloses a device for test abrasion resistance, used to test the object with irregular surface. The invention comprises a test head, a movable unit and a fixed platform, wherein an object is arranged on the fixed platform, the test head controlled by the movable unit reciprocally moves on the object, the test head is made from rigid and brittle material, the end of the test head is flat, test head has better contact with the surface of the object in the reciprocal movement. The invention also provides a relative abrasion-resistance test method. When in use and in friction, since the end of the pencil is flat and the pencil is rigid, the invention can accurately pickup test point, to contact the test point accurately, therefore, the test pressure is accurate, and the test result can represent whole effect, to accurately evaluate the plated structure art of lathe tool, and the abrasion resistance of structure of other lathe tool.

The invention provides an accurate controllable non-contact test piece rotary magnetic field fatigue excitation and vibration test device. The device comprises a vibration damping insulation clamp, a vibration damper, a dynamic balance device, a vibration exciter, an electromagnetic piezoelectric coupling vibration sensor, a test station, a transmission device and an accurate control device. The excitation and vibration test device is suitable for rotary test pieces and especially suitable for vibration characteristic researches on a wind power blade, an engine, a turbine blade, a helicopter rotor and a tail rotor blade, the excitation and vibration test device can vividly simulate vibration fatigue states of rotary test pieces respectively under conditions of 360-DEG all directions, same rotating speed and different excitation forces, same excitation force and different rotating speeds, and different rotating speeds and different excitation forces, the excitation and vibration test device can monitor related vibration characteristic parameters such as the excitation force, the vibration displacement, the vibration speed and the vibration acceleration continuously, and the excitation and vibration test device is suitable for vibration fatigue characteristic analysis on stationary test pieces.

The invention discloses a non-contact test system and method of an RFID label antenna. The non-contact test system of the RFID label antenna comprises a display unit, a data processing and controlling unit, a radio-frequency signal transmit/receive unit, a feed mechanism unit and a test antenna unit. The data processing and controlling unit is connected with the display unit, the radio-frequency signal transmit/receive unit and the feed mechanism unit in sequence, and the test antenna unit is connected with the radio-frequency signal transmit/receive unit. Due to the fact that non-contact test is adopted, test can be carried out free of requirement of binding a chip, dissipation of the chip is reduced, and working strength of testing personnel is reduced; the fault testing rate and the leak testing rate are low; automatic testing can be achieved, and testing efficiency is high; indirect measurement to electrical property can be achieved. The non-contact test system and method of the RFID label antenna can achieve automatic test and greatly reduces demands for mechanical mechanisms, and are very suitable for large-batch production testing.

Apparatus for terminating a test signal applied to multiple semiconductor loads under test is described—for example apparatus for interfacing a test signal between a tester and a semiconductor device under test (DUT). In some examples, a probe card assembly may include at least one probe substrate each having test probes configured to contact test features of a DUT; a wiring substrate, coupled to the at least one probe substrate, having a connector configured for coupling with a source termination of a tester; a signal path formed on and/or in the wiring substrate and the at least one probe substrate, the signal path having a trace and trace stubs fanning out from the trace, an input of the trace being coupled to the connector and outputs of the trace stubs being coupled to the test probes; and a resistive termination coupled between the trace and at least one potential.

The invention provides a supersonic velocity axisymmetrical boundary layer wind tunnel which comprises a front transition section (1), a stabilizing section (2) and a spray pipe experiment section (3), wherein the front transition section (1) is used for introducing air flows and carrying out primary rectification on the air flows; the stabilizing section (2) is connected to the downstream of the transition section (1) and used for carrying out secondary rectification on the air flows; the spray pipe experiment section (3) is connected to the downstream of the stabilizing section (2) and is in a fan-shaped axisymmetrical structure relative to a rotation axis (O); the spray pipe experiment section (3) comprises an outer peripheral wall (3a), an inner peripheral wall (3b) and two side walls (3c and 3d) connected with the outer peripheral wall (3a) and the inner peripheral wall (3b); transparent windows are at least formed on the side walls; the spray pipe experiment section (3) also comprises a spray pipe part (31) which is in a single-side expansion spray pipe structure and an experiment part (32) which is positioned on the downstream of the spray pipe part and can be used for carrying out observation and an optical non-contact test on an axisymmetrical boundary layer flow field formed in a spray pipe experiment section so as to research the flow field characteristics of the supersonic velocity boundary layer.

The invention relates to a system and a method for monitoring sleep quality and vital signs. The system comprises an induction device and a terminal in communication with the induction device, wherein the induction device is arranged inside a part contacting a tested person. According to the device and the method provided by the invention, a fiber bragg grating sensing module of a sensing device is used for sensing an optical signal corresponding to the tested person, an optical receiving module is used for converting the optical signal into an original electric signal, then the original electric signal is sent to the terminal communicated with the sensing module, finally the terminal analyzes according to the received original electric signal, and thus the sleep quality data corresponding to the tested user are obtained. In the above process, the sensing device is arranged inside the part contacting the tested person, therefore, the sensing device is not in direct contact with the human body, and the discomfort caused to the user due to the adoption of the direct-contact test process is avoided.

The invention relates to a circuit board testing jig and a circuit board testing system. The circuit board testing jig comprises a jig bottom housing, an elevating assembly, a product supporting board, a probe assembly and a master control module. The elevating assembly is used for downwards pressing the product supporting board. The product supporting board is arranged above the probe assembly and is elastically connected with the probe assembly. Furthermore the product supporting board is used for placing a to-be-tested circuit board and is provided with a plurality of first probe holes which correspond with testing points in the to-be-tested circuit board. The probe assembly comprises probes. The first end of each probe is electrically connected with the master control module, and the second end is used for passing through the first probe hole and contacting with the testing point after the product supporting board is pressed. The master control module is used for receiving and processing the testing data of the to-be-tested circuit board through the probes. The circuit board testing jig and the circuit board testing system can realize mechanical testing on the quality of the circuit board and overcomes a problem in testing the quality of a nut coil circuit board by means of human eyes according to a traditional testing method.

The invention relates to a semiconductor grain point measurement machine test method and a semiconductor grain point measurement machine. The method comprises the following steps of: adopting a group of point measurement machine conductive contact tested grains by the point measurement machine; sequentially exerting a small current test signal and a big current test signal to the tested grains; then receiving the current-voltage information returned by the tested grains; judging whether the deviation between the tested information and the given standard information exceeds a normal range or not till the deviation accumulatively exceeds the normal range for too many times; and stopping the grain detection and examining and repairing the machine after determining that the machine is in an abnormal state.

Because a guide hole that guides a plunger of a probe requires cumbersome machining of a hole, it is difficult to accommodate to narrowing of pitch and multi-polarization of terminals or electrodes. A probe (2) is fitted into cylindrical retaining holes (12 and 15) formed in upper and lower blocks (10 and 11). The plunger (6) of the probe (2) has a plate-like guide portion (19a), and an edge contact portion (19b). The bottomed retaining hole (12) is formed in the upper block (10) from a lower part thereof and a guide groove (13) is formed from an upper surface (s) thereof. The guide portion (19a) is guided movably vertically while being stopped from turning and from slipping out by the guide groove (13).