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Testing Automotive Fuse Boxes with i1000D SFP ICT System

Application Notes

Introduction

The fuse box inside the car is the only part that connects to every electric feature - the lights, the engine, the transmission, and the audio. This fuse box, comprising a board with a bunch of fuse seems to be simple, but it is definitely critical for the smooth running of all the cars on the street. The Keysight Technologies, Inc. i1000D small footprint (SFP) inline in-circuit tester is designed to test it with the best fit of features.

Inside this little black box is an array of colorful fuse plugs inserted in terminals mounted on a printed circuit board. Each fuse is color-coded to represent its specifications. A fuse board is not a complicated circuit to comprehend. Basically, it’s made up of a bunch of fuse terminals, each soldered and connected on the printed circuit board. There will be some passive components like resistors, capacitors and diodes mounted as well, but nothing complex.

However, it is not as easy as it seems when it comes to testing this board. Being one of the critical components in a vehicle, a simple board like this does warrant some serious test? requirement considerations. Let’s begin with a look at a typical manufacturing line setup. 

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Column Control DTX