PinPoint II
The PinPoint-FD is a new functional
test system combining high speed dynamic, digital and
analogue test with an in-circuit mixed signal test
capability. With programming software based on the
DiagnoSYS TestVue™ and TestFlow™ platforms
for ease of use, the PinPoint-FD can be configured with
drivers and instruments to suit almost any application.
The "open architecture" approach to hardware
means that the DiagnoSYS high-speed drivers, hybrid in-circuit
drivers and analogue instrumentation can be combined with
integral PXI cards, or additional external
instrumentation, to form a complete test system with a
single programming platform.
With turn-round for new
applications becoming more time-critical the TestFlow™
software has been developed to greatly reduce the time
taken to create a functional test programme and to
incorporate the functions of any pin driver, card or
instrument attached to the PinPoint-FD. With the ability
to import CAD data and test vector descriptor files the
programmer can generate a complete functional test
programme in the shortest possible time.
In line with the "future-proofed"
modular design of the system different fixturing methods
can be employed with simple interfacing to the PinPoint-FD.
The user has the option of manual, pneumatic or vacuum
with interfacing from both the edge of the card and
fixture pins. With the main use of the PinPoint-FD being
in both high and low volume production environments, the
system comes with the ability to output test fault data
and management statistics over a network. Programming
support and backup have also been taken into account with
the development of PinPoint-FD and the team of
applications and programming engineers at DiagnoSYS has
been expanded to include dedicated personnel for
increased production applications. The development of the
PinPoint-FD is based on 25 years of in house experience
in the circuit board repair industry, and on the very
successful PinPoint in-circuit test system. The PinPoint-FD
is the next generation in the DiagnoSYS range of test
solutions.
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PinPoint I
Description
PinPoint is the fastest, most economical in-circuit
tester available for service departments, production test/repair,
repair centres, third-party and fourth-party maintainers.
It is a powerful diagnostic tool for use on virtually any
digital or hybrid circuit board, no matter what the
component configuration; it can even test many boards
previously considered untestable.
In-circuit powered-up testing of devices in logic
analyser mode is complemented by "TrakTest" for
checking track community between devices together with
impedance testing.
PinPoint's ability to cycle through test vectors at up to
10MHz (rate programmable) ensures rapid execution of the
most complex automatic test sequences for all present and
foreseen devices. Expandable from 48-360 pins and
utilising 64K of Ram behind every driver/sensor, PinPoint
can generate a massive 250,000 test vectors for single-pass
testing of the latest VLSI devices.
Guard placement is carried out automatically under
software direction, limiting device dissipation to within
a safe operating range as defined by critical military
and commercial standards.
PinPoint runs under DiagnoSYS' advanced TestVue™
software which provides a graphical interface for ease of
use by the operator
Technique
PinPoint driver/sensors execute a full dynamic functional
truth table to the whole board under test or to selected
devices. The system carries out a true Tri-State test (input,
output and high impedance) for bus-connected devices,
without the usual pull-up or pull-down resistors.
PinPoint can check every net connection learned under the
netlist generator facility, or input directly from design
data.
PinPoint overcomes the difficulty present generation
testers have in testing open and short circuits, with the
advanced two clip technique.
Circuit documentation is achieved through the use of the
netlist generator's "multi-clip" technique and
CAD auto-routing software. This provides the highest
quality programme within a minimal timeframe.
Specification
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System General
PC AT Compatible Controller Pentium Processor
8Mbyte System RAM (exp to 32Mbyte)
Serial & Parallel Ports
850Mbyte (or greater) Hard Disc Drive
1.44Mbyte 3.5" Floppy Disk Drive
Driver/Sensor Pins
48-196 (Desktop) or 360 (Workstation) in increments of 24
8 Guard Channels (active or static)
1 Sync Channel
Driver
Voltage Range - 12 volts to +12 volts
Resolution: 10 millivolts
Current: Minimum 750 milliamps Source and Sink
Output Impedance: <2 Ohms
Slew Rate: Programmable to 250 V/us
Pin Skew: Maximum 1Ons Typical 5ns
Memory: 32K x 2 bits per Driver
States: High, Low, Passive
Sensor
Voltage Range: - 13 volts to +13 volts
Resolution: 10 millivolts
Input Impedance: >20K ohms
Memory: 32K x 2 bits per Sensor
States: High, Low, Tri-state
Terminator: Programmable 2K2 Pull-up or Pull-down
Controller
Test Rate: Programmable from 78KHz to 10MHz in 50ns
increments
Hardware Timer: Programmable from 2ms to 256ms in 1ms
increments
Vector Memory: 128/256k uncompromised test vectors
Internal/External Tester/Target control
External TTL Clock Input - Max Frequency 10MHz (Polarity
Switchable)
3 External Status/Handshaking TTL Controls
2 External Control Open-Collector Outputs
In-Circuit Analog Test Pack
The integrated Analog Test Pack for PinPoint
offers the user unrivalled performance for component,
cluster or edge card testing of analog and hybrid based
boards. The PinPoint's dynamic programmable drivers can
now be used
in conjunction with analog stimulus and response
measurements.
Op Amps, DAC's, ADC's and Voltage to Frequency
conversion, can all be checked thanks to the hardware and
software integration (Testvue™).
Individual passive components such as Resistors,
Capacitors, Diodes and Crystals can be measured with
accuracy and graded in or out of circuit and incorporated
into the test flow.
PinPoint Schematic
Description
The PinPoint Schematic is a powerful standalone or
integrated addition to the established PinPoint range of
digital test systems. It's capabilities further enhance
functionality by enabling the user to produce high
quality, accurate circuit documentation in the form of an
overlay and circuit schematic to either ANSI or IEEE
standards.

The key to the accuracy of PinPoint's schematic creation
is due largely to the capabilities of its Dual
Programmable Resistance Meter (DPRM) measuring an
interconnect to less than 1 Ohm. The dual capability of
the DPRM allows the operator to select 2 independent
resistance valves; one for measuring to a low impedance
power rail and the second to measure between device
interconnects. The DPRM makes the 'Schematic' ideally
suited for all board types from Analogue through to
Digital.
The learned Netlist File is passed to the Schematic
Translation software where a wire list and CAD format
file are produced. Once invoked, the Schematic CAD
environment is extremely powerful and easy to use.
Components are 'Autoplaced' and then 'Autorouted' to
produce a quality document. The software also supports a
whole range of powerful utilities to give the user the
freedom to change and modify the standard format, and
includes features to Autoroute across multiple pages,
create custom symbols and add text.
Technique
PinPoint Schematic offers the most versatile reverse
engineering/schematic generation facility available. It
will assess surface mount, through hole and custom
devices to generate a complete circuit diagram and board
layout. Covering digital, analogue and mixed signal
technologies, it is reliable, fast and employs a
resistance measurement technique thus requiring no power
to be applied to the board.
The PinPoint intuitive point and click method of
programming makes production of PCB overlays a rapid and
simple operation. The overlay created is then used to
guide the user through an advanced multi-clip learn
technique, determining all circuit nodes and
interconnects. The learned Nets are checked, as they are
found, against the PinPoint's built-in design rules,
warning the operator if any errors are encountered.
Specification
System General
Pentium processor on ISA/VESA active motherboard
256k Secondary Cache, 8 Mbyte Main Memory (RAM)
3.5" 1.4Mbyte Floppy Disc Drive
>100Mbyte IDE Hard Disk
CAD software package
2 off DII Test Clip sets, 2 x Strike Probes
Sensor Pins
Passive measurement system
96 pin (expandable to 720 pins @ 96 pin increments)
3 x probe channels, 11 x power sense channels
Net Detection
Purely resistive measurement technique
10mA MAX current injection
1.5V MAX voltage injection
Totally UUT non-powered technique
Range of Measurement: 0.1W - 60W Accuracy = 1% Full Scale
= 1% Value
Contact Detection
-5.5V @ 500uA Bias
Auto Point II Flying Probe System
AutopointII is a fixtureless,
gridless probing system with the capability to be
interfaced to a wide range of instruments, whether from
DiagnoSYS or a IEEE/GPIB Interface instrument supplier.
The standard AutopointII incorporates the
InterV3 signature analysis system operating within a
Windows-based TestVue™ software environment.
Options are available to use up to four separate
instruments, each with one or two probes and a maximum of
16 additional reference points.

The AutopointII 's probes are
mounted on high-accuracy Linear Motor positioning systems
capable of producing testpoint spacing within 0.01".
A test area of 530mm (21") x 530mm (21") is
available, with an overall PCB size of 600 x 600mm.
The AutopointII requires
minimal set-up skills whether using existing CAD data, or
manually positioning the probes utilising the in-built
high resolution colour camera within the intuitive
TestVue™ control environment.
As a moving probe based system AutopointII is able to
test boards with design features which would be
impossible to test utilising existing bed-of-nails
technology. No constraints are made on component lead
spacing or off grid designs, and it is this simple to set-up,
fixtureless approach, that makes AutopointII the ideal
solution for screening and testing low volume boards.Utilising
the Interv3 software component signatures are analysed on
unpowered boards. This method is non-destructive; it will
not damage the device under test or any other component
within the circuit. The technique tests the actual pin
junctions of active devices as well as values of
inductance, resistance and capacitance. It is therefore
able to detect leakage and bonding problems at the
device, as well as shorts and opens, components of
incorrect polarity and those of the wrong value.
The AutopointII probes and
automatically digitises and learns the signatures of each
component or node of a given PCB. This information is
then stored on disk to enable subsequent boards to be
tested and diagnosed entirely automatically.
The AutopointII is an
advance on the original AutoPoint being able to operate
with external IEEE controlled instruments. These
instruments are switched via a matrix and routed to the
probes enabling manual or CAD generated programming of
measurement paramenters to be made.



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