What is EOL fixtures?

EOL fixtures are the end of line resistor that is in each pull station loop. It is used to put a load on the circuit so that each circuit draws a current.  Flying probe application includes EOL fixture testing. Functional test systems are the important part of the quality assurance of the electronic products. The functional test is often also combined with an in-circuit test. In the in-circuit test, PCBs with mounted components or electronic components are contacted and tested for faults in printed conductor routing, soldering and component faults. Flying probes are playing a big part in the electrical and electronic testing world. These flying probes are mostly used for testing medium to low volume production, prototypes, and in boards with accessibility issues. The testing related to flying probe implements the usage of electro-mechanical controlled probes that are used for an easy access to components on printed circuit assemblies (PCAs). These are generally in experiments and testing related to short circuits, open circuits, analog signature analysis and analog components.

Equip Test Company has main focus on testing loaded PCB boards. It supports EOL fixture solutions. Customized PCB Testing Solutions from Equip – Test cover from entry level projects until mechatronically very complex solutions from one hand with warranty and local support.

What is Flash fixtures and how it is useful?

Flash fixtures allow you to offload flash programming from functional test systems, increasing test throughput while improving capital utilization. Flash runner cube and flash runner Quattro series are included in the flash fixtures. Flash runner cube is suitable for multi panel applications and direct parallel programming in modern production facilities. It is a high integration in system gang programmer specially designed for the programming multi-PCB panel assemblies. It is one of the fastest in-system programming systems. Here the projects and code images stored on memory cards with compact design for the production environment. It’s hardware features include 12 to 25V DC power supply input, Seven digital I/O lines, One programmable output power voltage, One programmable clock output, Secure Digital memory cards (up to 2 GB), On-board dynamic memory, On-board timekeeper and calendar, Opt isolated inputs for project selection, Optoisolated command inputs (START, START_ENA and STOP), Three opto isolated status outputs (FAIL, PASS, BUSY), Optoisolated RS-232/Ethernet channel.

Flash Runner Cube series is targeted at Manufacturing Mass Production and can work either in full standalone mode or controlled by host system, multiple programming up to 2 identical devices at a time. This in under the reliability features of the flash fixtures.

Flash runner Quattro is a high integration gang programmer based on the flash fixture technology.it is composed of a main board which hosts the programming and demulti plexing modules, plus various connectors used to interface to the target system and host/ATE. Its features include extremely fast programming with compact design for production environment.

What is Interconnect solution?

Technically, interconnect solutions are a major part that act as the connector interface between the test instruments and the devices/unit under test in the test applications. It can be utilized virtually in any testing requirement as it is accessible in various sizes according to the requirement. These frameworks are for the most part used as a piece of defense, aerospace, automotive, manufacturing, and such other applications as they are flexible, reconfigurable, and modular by design.

The i2 solution provides a signal, hybrid and configurable versions in a sleek 0.8” footprint. It has the capabilities to give the solution for the discrete-wiring, horizontal and right-angle PCB mounting. 

The features and benefit of i2 solution are

·         168 signal points with Quadra Paddle Technology

·         Hybrid option offers 120 signal points and 12 micro coax/micro power points

·         30° cable exit for vertical stack ability

·         0.8” footprint for horizontal stack ability

·         Integrated spring locking tabs

·         PCB compatible

·       Flying lead options allow you to pin your own configuration.

The i2's connecting with component coordinates spring locking tabs that affix over the hooking post for secure engagement. i2's 0.8" impression permits flat stack capacity. Keying pins and a square bolting component guarantee even and exact engagement. It has various positive qualities that sort out the issues that its 30º calculated link exit lessens the height requirement of the connector, permitting more space before the rack for instrumentation and when it comes to multi-connector board design, it reduces the vertical space between the connectors.

The i2 MX is the recently presented in i-Series and the i2 item group. This highly advanced product integrated with the advanced design highlights that make i-Series so well known. It gives a viewpoint on the necessities of Electromagnetic Interference protecting in the testing industry. The i2 MX likewise includes the modularity and adaptability of the icon, providing a more prominent assortment of I/O choices and designed for more than 10,000 cycles.

Increased Opportunities with the New i2 MX:

•             Compatible modular inserts

•             EMI-shielding accessible

•             Maximum cable bundles ability with advanced cable exit

•             i2 MX permits blending of signal, power, VTAC HSD and coax

•             Easy access for troubleshooting and repairs with detachable side panel on ITA back shell

Modular Inserts:

•  Substitutable modular inserts to appropriate for any condition

• Improved contact selection: Quadra Paddle, Tri-Paddle, Micro-Coax/Power, Mini Coax/Power,

  

VTAC

• 4 pre-configured solutions accessible

Accurate, Trustworthy Engagement:

• Spring-locking tabs attach over latching post for secure engagement

• Slimmer, metal engagement knob permits an expanded level stack capacity

• Reversible all metal back shells for various mounting choices

• Specifically planned Receiver strain help for dependable patch code arrangement and security

PCB Capabilities:

•Options include: horizontal mounting with utilization of stake pins, right angle mount with utilization of the header, and i2 to flex print

•84 Pin Header provides solder less compliant pins for easy usage

•Innovative header effectively adjusts i2 for a brisk end to connectors, for example, VHDCI and 68 Pin SCSI

Flying Leads:

• Flying Leads ITA Cable Assemblies to empower Pin Your Own Configuration adaptability

What are the key features of Spring Contact Test Probes?

Spring contact test probe are also referred to as Pogo Pins, Contact Pins, Bed of nails, Fixture pins, Spring Pins and Test Pins. These are made up of a tubular barrel, a spring and a plunger with gold plated as gold is an excellent electrical conductor and is resistant to corrosion. Contact is making through various test points on printed circuit boards (PCB’s), components and wiring fields through this spring contact test probe. The probes can be used to test connector-cable systems, when it employed in special test modules. Variety of tip style and different spring pressure are provided in the plunger tip style. Probes can be mounted into housing unit when an electric connection is made.

The spring loaded tip of the test probe will provide a reliable electrical contact to the target whose distance away may well be indeterminate. The main uses of these test probe are in vacuum test fixtures associated with automatic test equipment (ATE).They are also used inside a functional test station as part of a larger production line. The design of spring test probes is done in such a way that the use of the use of a receptacle allows the test probe to be removed for cleaning or replacement without having to disconnect the electrical cable. The electrical cable is connected to a receptacle which is the frame through this the test probe is inserted into.

How the quality Spring Contact Probes is important than the quantity?

Spring contact probes are used to test printed circuit boards, wire harnesses, connectors and other electronic components. Moreover, they can be used in interfaces and as easily removable electrical connections. Spring Contact Probes are used to make contact to various test points on printed circuit boards (PCB’s), components and wiring fields. When employed in special test modules, the probes can be used to test connector-cable systems. The probes can also be used in control engineering units or as a charging contact. These are made up of a tubular barrel, a spring and a plunger. Plunger tip styles can be provided in a variety of tip styles and different spring pressures. This ensures the best contact with the test surface. This also allows the probes to be easily removed for repair or replacement.

Contact Probes are available for various applications. Besides the technical applicability also machining and economical facts are relevant for this decision of using the contact probe. Short travels probes are solid probes with a limited travel facility .They are frequently used as battery or charge contact. Additionally, short travel probes can be integrated in end user products whenever low-wear electrical contacts are demanded. Other categories are Interface Probes, Probes with rolling ball, Switch Probes, High Current Probes, Threaded Probes; Pneumatic Probes etc. flat tip pin size contact probe is suitable for solder pads and contact pins. Different uses of contact probes are there according to the tip pin size. High current probes are used for high current application, specially designed for a very small probe resistance.

The main advantages of spring contact probe are longevity, Constant contact resistance, Interchangeable, Easy installation in the test adapter by using receptacles, High pointing accuracy, High currents and frequencies possible. Probes are a durable component, which can perform several hundred thousand contact cycles with stable contact resistance. The variety of spring contact probe allows the user to find the perfect test needle for each application.  Each probe is used for different purposes. The users have to choose according to the tip style, length, spring force and travel time. The wide range of applications for spring contact probes includes board tests with fine centers up to wire harness and connector test with individual and.

Spring Contact Test Probes – Provide Stable Contact Resistance

Through the mounting system, the spring contact probes are mostly and quickly used for exchanging without the wiring having to be replaced. The spring contact test probes are the durable components that can perform through several thousands of contact cycles with stable contact resistance. Here the longevity has led to the spring contact pins in the testing of circuit boards which are unrivaled. However, the spring contact probes are also often seems to be the spring loaded contact pins that are mainly used in the testing of printed circuit boards. The contact probes are built with electro mechanical connections between the test system and the contact probes are mounted in receptacles which are mounted in the test fixture.

Moreover, the contact test probes are suitable for contacting the requirements in two-terminal measurement which does not require tolerance compensation. Although, the spring contact test probes include a variety of spring contact probes that could be produced from materials such as hardened steel, brass and copper. A broad range of probes are come with a diameter of the different standard product range. In addition to this, the individual spring and testing contacts provide high vertical range of manufacturer that enables to produce and deliver spring contact probes in small quantities.

 

In addition to the standard spring contact test probes are different range of products that includes individual models for your specific testing task. The test probes are consist of a plunger, barrel and a fully encapsulated fine spring to provide the spring force required to maintain a positive contact.

Enjoy The Unique Measurement Capability Of Spring Contact Probes

The spring probes are mostly designed to optimize the performance of the high reliability and multicycle applications. The contact probes are compliant that makes the probes ideal for applications as they used for rotational and angular misalignment of the target. The spring contact probes are compressed with height and utilized on pitches as tight they are and they are also well suited for high density, battery contact, board-to-board and high frequency applications. The connectors of the contact probes are more compliant on the surface of their half rather than extending into the conventional pin and socket connectors. The spring test probes have a unique measurement capability.

The spring probes are designed to engage with its target and reach into a position to clear contaminants. Conversely, the connectors may be disengaged in many ways and making a probe technology to define the best approach to quick disconnect applications. Consequently, the spring contact probes permits a very high compliance to length ratio and allows the connectors to design as dense as and maintaining the compliances. The spring probes are in low profile designs which are creating a challenging conditions and vibration environment. As a single path, the spring probes combined with design and signal have their integrity and expertise that ensures the remarkable connector solutions for both the analog and digital applications.

The contact probes can be achieved with the spring probes interposes. Moreover, the spring probe contacts can also be made coaxial through the use of insulators and metal interposer bodies. The spring contact probes feature several innovations for control of performance and the advanced techniques provide excellent stability of contact resistance under the conditions of vibration. The probes can be designed to withstand of current contacts. The contact probes are capable of remarkable longevity based on design. The probes ate driven by the spring which maintain a contact force of contact over millions of cycles. The extensive materials combined with the expertise to deliver the contact that exceeds the highest customer specifications for insertion life.

The spring contact probes used for applications have the expertise and durable in nature that permit to design the connectors with excellent performance in harsh environments. Here, the contact probe requirements can be accommodated without sacrificing the performance.

What Are The Basic Requirements Of Spring Contact Test Probes?

The test probes are the generic terms used to describe a component whose spring loaded tips will provide a reliable electrical contact to a target distance. The traditional use of spring contact test probes can make contact with printed circuit boards or electrical components, in order to test the functionality and measure the value of the components. They are mostly used in the vacuum test fixtures associated with automatic test equipment and used in a functional test station as part of a larger production line. Here, the test probe is comprised with a metal tube, ready to assemble with a spring and contact plunger, it supplied as a one-piece item.

The test probes are usually referred as an excellent electrical conductor and is resistant to corrosion. Here, the electrical cable is generally connected to a receptacle in which the test probes insert into. The use of a receptacle in the spring contact test probes allows the test probe to be removed for cleaning or replacement without having to disconnect the electrical cable. The spring contact probes are used to make contact with the various test points on printed circuit boards, components and wiring fields. When it employed in special test modules, the spring test tubes can be used to test the connection-cable systems and also used in control engineering units or as a charging contact.

The contact test probes have the plunger tip styles that can be used to provide a variety of tip styles and different spring pressures. This ensures the spring contact test probes to contact with the test surface. The test probes can also be mounted with the receptacles, where the electrical connection of the probe is made and allows the test probes to easily remove for performing the repair or replacement. 

Different Standards And Special Models For Spring Contact Probes

The spring contact probes are used to create an electrical connection between the object that to be tested and the testing system. These contact probes are primarily used for electrical testing of printed circuit boards, connectors, cables and various other electrical components and assemblies. The main advantages of the spring contacts are:

·         Constant contact resistance.

·         High pointing accuracy.

·         Longevity.

·         High currents and frequencies as possible.

·         Easy installation in the test adapter by using receptacles

·         Interchangeable.

Moreover, the spring contact probes are used to test the printed circuit boards, connectors, wire harness and other electronic components. They can be used in interfaces and easily removable electrical connections. The contact probes of springs do not require tolerance compensation because they are suitable for all contacting requirements in two-terminal measurement. Altogether, the contact probes of spring produce different materials such as brass, steel or copper beryllium. It contains a broad range of head shapes with a diameter between 0.5 and 3mm forms of your standard product range.

In addition to this, the contact probes produce individual spring and testing probes with head shapes, that have diameters ranging from 0.25 to 10mm. The vertical range of manufacturer enables to deliver and produce the contact probes of spring in small quantities and it can also add the standard contact probes from a different range of products to include individual models for the specific tasking tasks.

The spring contact probes which are often have spring loaded contact pins that are mainly used in the testing of printed circuit boards. The spring contacts built the electro-mechanical connection between the test system. The spring contacts are mounted in receptacles which are mounted in the test fixture. Through this mounting system, it can quickly exchange it without the wiring have to be replaced. Probes are a durable component, which can perform several thousands of contact cycles with a stable contact resistance. The longevity has led to the spring contact pins in the testing of printed circuit boards are unrivaled. 

ICT Test Fixtures Used For All Testing Brands

Moreover, the circuit testing is traditionally used on mature products, especially in subcontract manufacturing. The ICT test fixtures define as a bed-of-nails test fixture mostly used to access multiple test points on the PCB’s bottom side. With sufficient access points the ICT can use to transmit the test signal into and out of the PCBs at high speed for performing the evaluation of components and circuits.

The test fixtures can be used as a traditional electronic test fixture. It has numerous pins inserted into holes, which are aligned using tooling pins to make contact. With the test points in an ICT test fixtures work as a printed circuit board and also connect to a measuring unit with wires. These ICT testing devices contain an array of small and spring-loaded pogo pins making contact with one node in the circuitry of the device under test.

A reliable contact can be made quickly with hundreds and in some cases thousands of individual test points within the circuitry. Devices that have been tested on an ICT test fixture may show a small mark or a dimple which comes from the sharp tips of pogo pins used in the fixture. It takes a few weeks to create the ICT fixture and do its programming. The ICT test fixtures can either be vacuum or press-down. The vacuum fixtures give a better signal reading versus the press-down type. On the other hand, vacuum fixtures are expensive because of their high manufacturing complexity.

What are the Explicit, Modular and Scalable Test Fixtures?

The test fixture is a tool that can be used consistently for testing some item, device or piece of a software. The test fixture can be found when testing electronics, software and physical devices. Generally, the text fixtures can be set up in three ways: in-line setup, delegate setup and implicit setup. In in-line set up the developers creates the test fixture in the same method as the rest of the test. But in the simplest test fixture, it is easy to create but later on its lead to duplication if multiple tests need to use the same initial data. The delegate setup with the test fixtures is a standalone setup method that can be accessed by multiple test methods. But in other ways, in implicit set up methods the developers placed the test fixture in a setup method subsequently that is later on used to set up multiple test methods.

This is different from the delegate setup, in that the overall setup of multiple tests can perform in a single setup method where the test fixture gets created instead of each test method. It has their own setup of procedures and links for performing the external test fixture. The main advantages of test fixtures are, it allows for tests to be repeatable one that is always starting with the same set up every time. It also eases testing code design by allowing the developers to separate the methods into different functions and reuse each function for other tests. The test fixtures configured to a known state at the start point, instead of working with any other device, they left from a previous test run.

It is considered as a bad practice when the test fixtures are too general in implicit setup, or when the test method sets up a test fixture and does not use it during the test. A more subtle issue is if the test methods ignore certain fields within the test fixture. Another bad practice is in inline setup the test setup contains more steps than are needed for the test.