AutoPoint DT0 pages

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Analog V/l Vectorless Testing

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Providing a power-off test of devices and networks, the V/l

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(Voltage / Current) analysis technique is a powerful and

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rapid way to compare signatures learnt from a known good

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PCB with those on a faulty PCB.

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The technique is ideal for testing networks with passive

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components such as resistors, inductors, capacitors and

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semiconductor junctions. However, it can also be applied to

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test the input and output stages of active devices e.g. ICs,

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FPGAs etc. providing a rapid indication of possible damage

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e.g. static damage destroying the protection diodes or damage

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to output/input transistors.

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The technique applies an AC signal to a network and by

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measuring the voltage and current relationship can display a

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four quadrant trace signature. The TestVue software

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automatically compares a learnt signature with the one being

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measured and will make a pass or fail decision based on a user

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programmable tolerance envelope.

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The technique can also be used in a virtual instrument mode

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where the real-time signature is displayed and analysed by the

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user. This will give an experienced user an indication of the

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likely cause of a failure eg damaged semiconductor junction,

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incorrect resistance, incorrect capacitance.

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The TestVue software will automatically determine the best

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frequency and voltage to apply to a network and then takes

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three readings, one above, one below and one in the middle to

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ensure stability and repeatability of the diagnostics.

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A user defined tolerance is then applied to each measurement

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on the trace to provide a tapered tolerance envelope to give a

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sound basis for meaningful diagnostic decisions.

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Devices made by different manufacturers can cause different

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signatures (e.g. different input/output stages affecting the

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analog signature) even though the device is functioning

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correctly. To cater for these situations the TestVue software

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allows the user to learn alternative signatures for a network

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and will then automatically compare the measured signature

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with all allowed alternatives. This feature gives you the benefit

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of more reliable and accurate diagnostics with the subsequent

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reduction in re-work and repair time.

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A typical signature is shown in the diagram on the inside

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page. The Green trace is the stored signature with a

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programmed tolerance band around it, the red trace is the

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measured trace and in this case is clearly outside the

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acceptable tolerance band showing a failure.

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When the AutoPoint DT is integrated with the

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PinPoint system far more extensive testing

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can be applied to a circuit.

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The user can select any or all of the following for a device:

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► Dynamic digital tests to assure the correct functionality

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► TestVue TrakTest software to check for

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Open/Short circuits

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► V/l signature to check the presence and

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operation of analog devices, e.g. pull-up, pull-down

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resistors, internal semiconductor junctions, external

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junctions etc

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The PinPoint system has a comprehensive range of diagnostic

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tools available for the user to apply and thereby identify and

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diagnose the cause of failures, reliably, accurately and

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repeatedly. Combining a PinPoint with the AutoPoint DT

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system removes the necessity for manual probing and

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ensures error free testing; this combination provides an

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excellent and flexible diagnostic test solution for any circuit.

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Keeping your electronics fully operational

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AutoPoint DT

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► Automatic diagnostics and probing

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► Power-off test techniques for safe testing

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► No knowledge of board required so can

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be used on all circuits

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► Error-free probing for accurate and

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fast diagnostics

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► Powerful and intuitive TestVue software

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for ease-of-use

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► Standalone or Integrated implementation

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for scaleable levels of test

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Small desk-top footprint for minimum

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space impact

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► Rapid introduction for fast returns

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on investment

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AutoPoint DT Specifications:

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- V

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1

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Diagnosys

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AutoPoint DT

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Mil

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■

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iá

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Parameter;

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AutoPoint DT

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AutoPoint DT Plus

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Maximum Board-Under-Test Size:

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Maximum Board-Probing Area:

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Maximum Allowable Component

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Height on Board Under Test:

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Prober Dimensions:

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Accuracy:

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Minimum Resolution:

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Maximum Z Travel:

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Camera:

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Power Requirements:

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PC Interfaces:

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Certifications:

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Warranty:

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19.4" X 14" (49.3cm X 35.6cm)

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15.3" x 12.9 " (38.9cm x 33.8cm)

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2.375" (6cm)

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26.5"Wx13"Hx24.5"D

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(67.31 cm W x 33.02cm H x 62.3cm D)

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0.0007874" (±20 microns)

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0.0003937" (10 microns)

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2.21" (5.6cm)

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Colour CCD 811 x508 pixels

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115VACor230VAC100W

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USB

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CE and ETL listed

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1 year limited

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22"x23" (56cm x 58cm)

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18.2" x 22.4" (46.2cm x 56.9cm)

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4" (10cm)

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36"Wx15.7"Hx29"D

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(91.44cm W x 39.88cm H x 73.66cm D)

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0.0007874" (±20 microns)

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0.0003937" (10 microns)

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4.2" (10.6cm)

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Colour CCD 811 x508 pixels

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115VACor230VAC100W

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USB

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CE and ETL listed

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1 year limited

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Automatic

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Probe System

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for Fault Finding

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For your local office details please visit

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our web site: www.diagnosys.com

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Diagnosys has a policy of continuous product improvement and reserves the right to change technical specifications

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at any time without prior notice. Diagnosys does not accept liability for errors or misprints in this document.

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Diagnosys

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diagnosys.com

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