Flexible Matrix for Avionics Use

Customer

Avionics System Integrator

Application

A new generation of flexible and easy configurable Test Systems for the Avionics Industry have been requested from the Integrator's end customer.

The main goal was to simplify test installations and to cover all functional tests for a very high variation of units under test at high voltage up to 750V and within much faster test time.

Problem

The size of the test system's switching system is driven by the amount of UUT pins, instrument leads and concurrent interconnected signals. Previous switching systems were either too large (and therefore very expensive) or they were too small to test all requirements. Use of small switching systems resulted in long test times because of the lack of concurrent signal switching.

Solution

With no COTS solutions available on the market, Pickering agreed to design a new product to suit the specific switching requirements.

Each test system's switching network was made configurable out of many 75x4 high voltage matrices using multiple 60-311-003 2 pole Matrices. Each 60-311 provides 3 off 75x4 matrices, each of which has its own isolation relays on both the X and Y axis that allow the overall matrix to be configured to the size required by the different test targets.

Examples of configurations are shown in the images below