Analog V/l Vectorless Testing Providing a power-off test of devices and networks, the V/l (Voltage / Current) analysis technique is a powerful and rapid way to compare signatures learnt from a known good PCB with those on a faulty PCB. The technique is ideal for testing networks with passive components such as resistors, inductors, capacitors and semiconductor junctions. However, it can also be applied to test the input and output stages of active devices e.g. ICs, FPGAs etc. providing a rapid indication of possible damage e.g. static damage destroying the protection diodes or damage The technique applies an AC signal to a network and by measuring the voltage and current relationship can display a four quadrant trace signature. The TestVue software automatically compares a learnt signature with the one being measured and will make a pass or fail decision based on a user programmable tolerance envelope. The technique can also be used in a virtual instrument mode where the real-time signature is displayed and analysed by the user. This will give an experienced user an indication of the likely cause of a failure eg damaged semiconductor junction, incorrect resistance, incorrect capacitance. The TestVue software will automatically determine the best frequency and voltage to apply to a network and then takes three readings, one above, one below and one in the middle to ensure stability and repeatability of the diagnostics. A user defined tolerance is then applied to each measurement on the trace to provide a tapered tolerance envelope to give a sound basis for meaningful diagnostic decisions. Devices made by different manufacturers can cause different signatures (e.g. different input/output stages affecting the analog signature) even though the device is functioning correctly. To cater for these situations the TestVue software allows the user to learn alternative signatures for a network and will then automatically compare the measured signature with all allowed alternatives. This feature gives you the benefit of more reliable and accurate diagnostics with the subsequent reduction in re-work and repair time. A typical signature is shown in the diagram on the inside page. The Green trace is the stored signature with a programmed tolerance band around it, the red trace is the measured trace and in this case is clearly outside the acceptable tolerance band showing a failure. When the AutoPoint DT is integrated with the PinPoint system far more extensive testing The user can select any or all of the following for a device: ► Dynamic digital tests to assure the correct functionality ► TestVue TrakTest software to check for Open/Short circuits ► V/l signature to check the presence and operation of analog devices, e.g. pull-up, pull-down resistors, internal semiconductor junctions, external The PinPoint system has a comprehensive range of diagnostic tools available for the user to apply and thereby identify and diagnose the cause of failures, reliably, accurately and repeatedly. Combining a PinPoint with the AutoPoint DT system removes the necessity for manual probing and ensures error free testing; this combination provides an excellent and flexible diagnostic test solution for any circuit. Keeping your electronics fully operational ► Automatic diagnostics and probing ► Power-off test techniques for safe testing ► No knowledge of board required so can ► Error-free probing for accurate and fast diagnostics ► Powerful and intuitive TestVue software ► Standalone or Integrated implementation for scaleable levels of test Small desk-top footprint for minimum space impact ► Rapid introduction for fast returns Maximum Board-Under-Test Size: Maximum Board-Probing Area: Maximum Allowable Component Height on Board Under Test: Prober Dimensions: Minimum Resolution: Power Requirements: Probe System For your local office details please visit Diagnosys has a policy of continuous product improvement and reserves the right to change technical specifications at any time without prior notice. Diagnosys does not accept liability for errors or misprints in this document.

A compact, fully automatic electronic circuit diagnostic and probing system Configurations The AutoPoint DT can be implemented in 2 ways: Connected to a standalone PC (supplied) for an automatic flying probe tester: PC + FF PCI card + Video card + AutoPoint DT AutoPoint + accessory pack + TestVue software This provides a low cost and very effective test and diagnostic The AutoPoint DT system is a small desk-top flying probe system for any type of circuit. This system uses the analog system that provides automatic probing of an electronic signature technique to identify causes of failures. circuit....