Defence - Fighter Plane

Test & Diagnostics

  • The Test Philosophy
  • The Benefits of Investment
  • The Range of Test Services

The Test Philosophy

Customers increasingly expect more from today’s Contract Electronics Manufacturers (CEM) than just pcb assembly. When only the assembly work is contracted out the benefits are, whilst still potentially significant, less rewarding than if the test and diagnostics are also carried out by the CEM, freeing the customer’s valuable electronics engineers other duties. Receiving fully tested PCB assemblies increases confidence and reduces timescales in the subsequent stages of system integration, helping achieve on-time delivery to the end customer.

The most appropriate level and nature of testing can be determined to balance complexity, style and product function. The route to cost effective testing includes the ability to provide comprehensive diagnostics such that manufacturing or component defects can be corrected in the minimum of time and least impact on the production cycle. High speed and high coverage tests will only be rewarded if faults are diagnosed and remedied quickly. Today's CEM is increasingly being asked to meet those demands and that is why Ultra Electronics CEMS have a broad range of test services to complement their PCB testing assembly activities by IPC qualified CEMS training instructors.

The Benefits of Investment

Using state-of-the-art equipment, CEMS test engineers develop the optimum regime of test procedures and functions for each individual product in order to reduce debug and overall product manufacturing time. As products become increasingly complex the test strategy must also become more comprehensive, addressing the progressively increasing levels of functionality found on today’s PCB’s.

By analysing trends in test results CEMS Test Engineers are able to propose improvements to the production process and / or the product design, thereby improving production yield and potentially extending product life in the field.

The Range of Test Services

In-circuit Test (analogue and digital)

MDA or more comprehensive incorporating Boundary Scan, Test Jet and Q-test vectorless tests.

Automated functional test ATE

Interfacing to simulated and real loads.

Combinational test

Full coverage ATE testing with tailored requirements to provide a fully functional unit that might include Flash or other programming demands.

Manual functional test

  • Simulation and real time testing
  • RF Test and diagnostics
  • Flying Probe MDA testing
  • Pressure testing of sub-sea equipment
  • JTAG test and diagnostics
  • X-Ray inspection
  • Automatic Optical Inspection
  • Vibration testing
  • XRF analysis
  • ESS thermal stress testing

Design and implementation of optimum test solutions

CEMS can provide the conversion of a customer Product Performance Specification into a test strategy and test solution be it a single PCB or multi-level assembly. This can be via a custom design or the customers' own test method and equipment.

Man testing Testing Machine Second Man testing Test Diagnostics

Product Miniaturisation in the UK

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