barcode scanner code in asp.net FLYING PROBE in Software

Maker QR Code JIS X 0510 in Software FLYING PROBE

FLYING PROBE
Decoding QR Code In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Make QR Code 2d Barcode In None
Using Barcode printer for Software Control to generate, create QR image in Software applications.
The more precise examples of flying-probe systems are very well suited to HDI testing. With on-head optical pattern recognition guiding the probe tips, they can contact extremely small targets even in the presence of significant product registration problems. They can probe small features without marking or disturbing the surface. These systems can be equipped with true Kelvin contact tips supporting effective single-measurement fractional ohm testing, well suited to the sort of fractional ohm continuity test that may be desirable in efforts to detect precursor phenomena to latent defects caused by cracks or other geometry problems. The principle drawback is, of course, test speed. Used alone, these systems are ideal for prototype or small volume production applications where fixture production would be quite expensive. Used with throughput enhancement systems as described in Sec. 39.4.3, these systems can accommodate moderate production volumes.
QR Recognizer In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
QR Code Creation In Visual C#
Using Barcode maker for VS .NET Control to generate, create Quick Response Code image in VS .NET applications.
COUPLED PLATE
Painting QR Code In Visual Studio .NET
Using Barcode creator for ASP.NET Control to generate, create QR image in ASP.NET applications.
Quick Response Code Generator In Visual Studio .NET
Using Barcode encoder for .NET Control to generate, create QR image in VS .NET applications.
In a situation where most of the target product is relatively easy to fixture, but a DCA or CSP site is difficult, it may be possible to use coupled plate type testing. A variety of proprietary
Painting QR Code ISO/IEC18004 In Visual Basic .NET
Using Barcode creation for VS .NET Control to generate, create Denso QR Bar Code image in VS .NET applications.
GS1 - 13 Encoder In None
Using Barcode creator for Software Control to generate, create European Article Number 13 image in Software applications.
PRINTED CIRCUITS HANDBOOK
Code-39 Printer In None
Using Barcode printer for Software Control to generate, create Code-39 image in Software applications.
GTIN - 12 Printer In None
Using Barcode generator for Software Control to generate, create UPC A image in Software applications.
products are available, but the basic technique is fairly similar. The primary assumption is that each signal network arriving at the DCA or CSP site is accessible by a traditional probe at some other site on the board. These probe sites are used to perform a normal isolation test of the product. Continuity testing of most of the board is performed in the usual manner also. To verify the continuity of the signals to the DCA or CSP site, a small metal plate or antenna is suspended just over the site, perhaps insulated from the site only by a thin dielectric. One at a time, the standard probe sites are used to inject some sort of alternating current (AC) signal or pulse into each network in turn. If the network is properly continuous to the DCA or CSP site, then a signal of appropriate amplitude is detected at the antenna. Substantial deviation from the proper amplitude means that something is wrong. The different methods vary in terms of the applied signal, antenna characteristics, and so on. This method eliminates the need for super-fine-pitch probing at the DCA or CSP site and also avoids marking of the product at this site. However, the test does not perform a true DC test of continuity and may miss high-resistance connections, which would be detected by a low-threshold DC continuity measurement. Signals that loop from one DCA or CSP pin to another and go nowhere else may be untestable as there is no outboard probe site at which to inject the test signal.
Bar Code Generation In None
Using Barcode printer for Software Control to generate, create bar code image in Software applications.
Generate DataMatrix In None
Using Barcode encoder for Software Control to generate, create DataMatrix image in Software applications.
39.6 SHORTING PLATE
Generating Code 11 In None
Using Barcode maker for Software Control to generate, create USD - 8 image in Software applications.
Decode Code 3 Of 9 In None
Using Barcode scanner for Software Control to read, scan read, scan image in Software applications.
This method is employed in circumstances similar to the coupling plate method just described. In this case, however, the plate must be movable during the test. Generally, a pencil-sized pneumatic actuator is mounted within the test fixture to accomplish this motion. The plate employed here is a small flat metal plate that is the size of the DCA or CSP site and covered with an electrically conductive rubber (see Fig. 39.2).When pressed against the product, it shorts together all of the pads at the DCA or CSP site. Continuity testing is performed in this condition by using the outboard probe sites to confirm that all of these (otherwise isolated) networks are shorted together via the path to the DCA or CSP site. All other networks are tested normally for continuity. Then the shorting plate is removed and a normal isolation test is performed. Key advantages of this method are the accomplishment of true DC measurements for both isolation and continuity and the use of standard bare board test systems. In some applications, there is concern about any trace chemicals that may be left behind by the conductive rubber, although outright marking is minimal. Cleanliness of the product is
USS Code 39 Creator In Objective-C
Using Barcode encoder for iPhone Control to generate, create ANSI/AIM Code 39 image in iPhone applications.
Make UCC - 12 In Visual Basic .NET
Using Barcode creation for .NET framework Control to generate, create UPC Symbol image in Visual Studio .NET applications.
Recognizing Bar Code In Visual C#.NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
Barcode Printer In Java
Using Barcode drawer for Android Control to generate, create bar code image in Android applications.
Painting Bar Code In VS .NET
Using Barcode printer for Reporting Service Control to generate, create bar code image in Reporting Service applications.
UCC.EAN - 128 Creator In Objective-C
Using Barcode generator for iPad Control to generate, create UCC - 12 image in iPad applications.
Copyright © OnBarcode.com . All rights reserved.