Abstract

The invention relates to a test head for a finger tester for testing printed circuit boards, a finger tester and a method for testing printed circuit boards. The test head comprises a slide, which can be movably arranged on a traverse of the finger tester, a holding module for holding a swivel arm, which is formed at the free end remote from the holding module for receiving a test probe, a lifting device, by means of which the holding module is formed to be movable in the vertical direction relative to the slide, the lifting device comprising a vertical guide rail with a rolling bearing, and a swivel device for rotating the holding module and thus the pivoting arm about a vertical axis of rotation, wherein the swivel device comprises a motor for rotating the swivel device. The invention relates to a test head for a finger tester for testing printed circuit boards, a finger tester and a method for testing printed circuit boards. The test head comprises a slide, which can be movably arranged on a traverse of the finger tester, a holding module for holding a swivel arm, which is formed at the free end remote from the holding module for receiving a test probe, a lifting device, by means of which the holding module is formed to be movable in the vertical direction relative to the slide, the lifting device comprising a vertical guide rail with a rolling bearing, and a swivel device for rotating the holding module and thus the pivoting arm about a vertical axis of rotation, wherein the swivel device comprises a motor for rotating the swivel device. The test head is characterized in that the swivel device comprises a shaft or axis, wherein a rotating member of the swivel device is arranged concentrically to the shaft or axis so that the rotating member surrounds the shaft or axis, and the rotating member is either mounted on the axis with at least one bearing or the shaft is mounted on the slide with at least one bearing, and the motor is formed as a direct drive, wherein the rotating member forms the rotor of the motor.

IPC Classes  ?

• G01R 1/067 - Measuring probes
• G01R 31/28 - Testing of electronic circuits, e.g. by signal tracer

Abstract

The invention relates to a test needle for measuring electrically conductive layers in holes of printed circuit boards, as well as to a test probe equipped with such a test needle and to a flying probe tester for testing printed circuit boards equipped with such a test needle or such a test probe. The invention relates to a test needle for measuring electrically conductive layers in holes of printed circuit boards, as well as to a test probe equipped with such a test needle and to a flying probe tester for testing printed circuit boards equipped with such a test needle or such a test probe. The test needle has a capacitive measuring body, which is connected via a cable to a capacitive measuring device. The cable is shielded so that only the capacitive measuring body can form a capacitive coupling with other electrically conductive bodies. This makes it possible to determine this capacitive coupling with a high local resolution.

IPC Classes  ?

• G01R 31/312 - Contactless testing by capacitive methods
• G01R 1/067 - Measuring probes
• G01R 1/07 - Non contact-making probes
• G01R 31/28 - Testing of electronic circuits, e.g. by signal tracer

Abstract

The invention relates to a test body (4) for a finger tester (1) for testing printed circuit boards, to a finger tester, and to a method for testing printed circuit boards. The test body comprises: • a slide (14) which can be movably arranged on a traverse (3) of the finger tester, • a holding module (21) for holding a pivoting arm (22) which is formed on the free end that is remote from the holding module in order to receive a test probe (23), • a lifting device (20), by means of which the holding module is designed to be movable in the vertical direction with respect to the slide, said lifting device having a vertical guide rail with a rolling bearing (37), and • a pivoting device (19) for rotating the holding module and thus the pivoting arm about a vertical rotational axis, wherein the pivoting device has a motor (30) for rotating the pivoting device. The test body is characterized in that the pivoting device has a shaft (42) or axle (26), and a rotational body (28) of the pivoting device is arranged concentrically to the shaft or axle such that the rotating body surrounds the shaft or axle. The rotating body is mounted either on the axle by means of at least one bearing (27) or the shaft is mounted on the slide by means of at least one bearing, and the motor (30) is designed in the form of a direct drive, said rotating body forming the rotor of the motor.

IPC Classes  ?

• G01R 1/067 - Measuring probes
• G01R 1/073 - Multiple probes

Abstract

The invention relates to a test needle for measuring electrically conductive layers in holes of printed circuit boards, as well as to a test probe equipped with such a test needle and to a flying probe tester for testing printed circuit boards equipped with such a test needle or such a test probe. The test needle has a capacitive measuring body, which is connected via a cable to a capacitive measuring device. The cable is shielded so that only the capacitive measuring body can form a capacitive coupling with other electrically conductive bodies. This makes it possible to determine this capacitive coupling with a high local resolution.

IPC Classes  ?

• G01R 31/312 - Contactless testing by capacitive methods
• G01R 31/28 - Testing of electronic circuits, e.g. by signal tracer
• G01R 1/067 - Measuring probes
• G01R 1/07 - Non contact-making probes

Abstract

The present invention relates to a testing device and to a method for testing circuit boards, in particular un-equipped or partially-equipped circuit boards. The testing device is a flying probe with a shuttle or two sub-shuttles, which can displace a circuit board to be tested to a test area in an alternating manner. In addition, the sub-shuttles can be used for commonly holding a large circuit board.

IPC Classes  ?

• G01R 31/28 - Testing of electronic circuits, e.g. by signal tracer
• G01R 1/073 - Multiple probes

Abstract

The invention relates to a module (1) for a parallel tester for the testing of circuit boards and a parallel tester that comprises such modules. The module comprises circuit boards (3) standing perpendicular to the plane of the base grid of the parallel tester, with contact pins (9) arranged along one side edge (4) of said circuit boards. The peripheral surfaces of the contact pins (9) lie against flat sides (5) of the circuit boards (3) and extend a bit beyond the circuit board (3) at the side edge (4).  The contact pins are electrically and mechanically connected to contact fields (6) configured on the circuit board. This arrangement of contact pins (9) can be manufactured cost-effectively, is mechanically stable, and allows the manufacture of modules with a high density of contact pins (9).

IPC Classes  ?

• G01R 1/073 - Multiple probes
• G01R 31/28 - Testing of electronic circuits, e.g. by signal tracer

Abstract

The invention relates to a full raster cartridge (2) for a parallel tester for testing an unpopulated printed circuit board (35), a spring contact pin (3) for such a full raster cartridge (2), and an adapter (21) for a parallel tester for testing an unpopulated printed circuit board (35). According to a first aspect of the present invention, spring contact pins (3) are fixed in the full raster cartridge (2) by means of a film (20). According to a further aspect of the present invention, the full raster cartridge (2) has two plates (4, 5) that are movable relative to each other in the axial direction of the spring contact pins (3) and have a clearance transverse to the axial direction. According to a third aspect of the present invention, the spring contact pins (3) are configured using a centric spring contact point. According to a further aspect of the present invention, an adapter (21) has contact pins that are provided with a sensor head, wherein the contact pins have a locking projection, by which said contact pins are secured on a guide plate (26) of the adapter (21) to prevent said contact pins from falling out.

IPC Classes  ?

• G01R 1/073 - Multiple probes
• G01R 31/28 - Testing of electronic circuits, e.g. by signal tracer

Goods & Services

Electric and electronic apparatus for testing electrical connections, in particular circuit boards and cable assemblies; parts for the aforesaid apparatus, in particular racks for holding and contacting elements carrying electric connections, contact needles and contact pins; contact elements; computers; computer programs; adapters and translators for connecting the elements which indicate the electric connections being tested, with apparatus. Maintenance and servicing of electric and electronic machines for testing printed circuit boards and printed assemblies. Planning and construction of individual electric and electronic machines for testing electrical connections; creating computer programs for testing electrical connections; planning and construction of adapters and translators; drawing up plans for adapters and translators, in particular in the form of electronic data sets; testing of electric connections, in particular testing of circuit boards and cable assemblies.

Abstract

The invention relates to a module (1) for a test device for testing circuit boards. Such test devices have a basic grid on which an adaptor or translator can be arranged, in order to connect contact points on the base grid to a circuit board for testing. The module comprises a support plate (2) and a contact plate. The contact plate is made from a rigid circuit board section (10), called a base grid element and at least one flexible circuit board section (17). Contact points are provided on the base grid element each forming a part of the contact points of the base grid. The base grid element is arranged on a front face of the support plate and the flexible circuit board section is bent such that at least a part of the remaining region of the contact plate is parallel to the support plate. The contact points of the base grid element are in contact with conductor tracks running in the contact plate which run from the base grid element into the flexible conductor section.

IPC Classes  ?

• G01R 1/073 - Multiple probes
• G01R 31/28 - Testing of electronic circuits, e.g. by signal tracer

Goods & Services

Electrical and electronic apparatus for testing of electric leads, particularly for testing of printed circuit boards and laced wiring harness; parts for the aforementioned apparatus, particularly the racks of which for holding and contacting said elements comprising the electric leads, contacting elements; computers; software; adapters or transducers for connecting the elements comprising the electric leads under test to an apparatus for testing electric leads. Maintenance and servicing of electrical and electronic apparatus for the testing of printed circuit boards and componented printed circuit boards. Planning and construction of individual electrical and electronic apparatus for testing electric leads; design of computer programs for testing electric leads; planning and construction of adapters or transducers; development and design of plans for adapters or transducers, particularly in form of an electric data record; testing of electric leads, particularly testing of printed circuit boards and laced wiring harness.

Abstract

The present invention relates to a finger tester which is intended to test unpopulated printed circuit boards and has at least two test fingers (1) each having a test probe (2), wherein a respective detection device (20) for optically detecting the position of at least one contact tip of the test probe (2) is provided above each test probe (2). The detection devices (20) of the at least two test probes (2) are arranged on different planes which are at a distance from one another in the vertical direction, with the result that at least regions of the detection devices (20), which are arranged above the test fingers (1), can be contactlessly positioned above one another such that they are vertically aligned.

IPC Classes  ?

• G01R 1/067 - Measuring probes
• G01R 31/28 - Testing of electronic circuits, e.g. by signal tracer

Abstract

The invention relates to a method and a device for testing unequipped circuit boards. According to the inventive method, deviations between circuit board test points of a series of circuit boards are determined in relation to the CAD data pertaining to said circuit boards, by scanning the surface of the circuit board using a method producing an image and subjecting said image to an automatic image analysis, so that it can be compared with the CAD data. The CAD data is then corrected accordingly such that the circuit board can be tested in a finger tester on the basis of the corrected CAD data, the test fingers of the finger tester being controlled according to the determined deviations.

IPC Classes  ?

• G01R 31/28 - Testing of electronic circuits, e.g. by signal tracer
• G01R 31/309 - Contactless testing using non-ionising electromagnetic radiation, e.g. optical radiation of printed or hybrid circuits

Goods & Services

Testing apparatus for testing printed circuit boards and laced wiring harnesses; mounting racks for holding testing apparatus for testing printed circuit boards and laced wiring harnesses; computers; computer software for use in testing printed circuit boards and laced wiring harnesses; electrical adapters for all of the above listed equipment

Goods & Services

Machines (included in this class) and machine tools; motors and engines (except for land vehicles); machine coupling and transmission components (except for land vehicles). Scientific and electric apparatus and instruments (included in this class); apparatus for recording, transmission or reproduction of sound and images; data processing equipment; software (stored); computers; testing apparatus for testing printed circuit boards, test adapters for testing printed circuit boards, test pins for testing printed circuit boards. Scientific and industrial research; computer programming; services of engineers; testing of printed circuit boards.

Goods & Services

Testing apparatus, namely computer hardware and software testers, test adapters and test pins, all for testing printed circuit boards

Goods & Services

Electric and electronic machines for testing electrical connections, in particular circuit boards and cable assemblies; parts for the aforesaid machines, in particular hangers (parts of machines) for holding and contacting elements carrying electrical connections, contact elements; computers; computer programs; adapters and translators for connecting the elements which indicate the electrical connections being tested, to a machine. Planning and construction of individual electric and electronic machines for testing electrical connections; creating computer programs for testing electrical connections; planning and construction of adapters and translators; drawing up plans for adapters and translators, in particular in the form of electronic data sets; testing of electrical connections, in particular testing of circuit boards and cable assemblies.

Goods & Services

Electrical and electronical apparatus for testing of electric leads, particularly for testing of printed circuit boards and laced wiring harness, parts of the aforementioned apparatus, particularly the racks of which for holding and contacting said elements comprising the electric leads, contacting elements; computer; software; adapters or translators for connecting the elements comprising the electric leads under test to an apparatus for testing electric leads. Planning and designing of individual electrical and electronical apparatus for testing of electric leads; development and design of software for testing electric leads; planning and construction of adapters or translators; development and design of plans for adapters or translators, particularly in form of an electric data record; testing of electric leads, particularly testing of printed circuit boards and laced wiring harness.