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RTI Cabled DUT boards:

RTI maintains support for a variety of Fixtures that interface via cables. Unlike the Spring pin Fixtures, many of these are actually DUT boards in respect that they have a socket on them and not an interface to another DUT board.
 
  • Many of the cabled fixtures are Dedicated versions of the Pogo block fixtures for a particular device or RTI universal BGA or WLCSP socket.  
  • Many of the cabled fixtures use the same cable systems to interface to the test system as the Pogo block Fixtures

 

 

RTI Cabled Fixtures and DUT boards:

  • RTI R1 DUT Boards:  R1 boards feature a standard size and standard connector pinout with test point matrix and a socket.  These fixtures support 96 pins and the 4 corner pins of the connector are connected to ground.  This DUT board may have most RTI socket types, the MultiTrace Century or RTI manual switch boxes and your own test equipment.
  • RTI R2, R4 DUT Boards:  These board types are similar to the R1 board except they support 192 or 384 pins respectively.  A Test point matrix is provided for each connector.
  • 64 pin Ribbon Cable Interface DUT Boards:  This simple DUT board interfaces to test systems via a 64 pin Ribbon cable, other pin count cable systems are also available.  These boards have similar features to the R1 board type.  The advantage is that ribbon cable is the lowest cost form of interconnect, the disadvantage is that these cables are normally not very durable.
  • Edgeboard Interface DUT Boards:  This Simple DUT board interfaces via gold fingers at the edge.  This board needs to be slotted into an edgeboard type of connector.  Various pin count systems are available.  The advantage of this design is very low cost not requiring any connector body to be soldered to the DUT board but the disadvantage is that they are hard to insert and remove and the connectors are becoming harder to obtain as the industry modernizes on smaller connector standards.
  • RTI PGA-625 Extension Cable/Fixture:  This specialized cable assembly extends the PGA-625 ZIF socket interface from the MultiTrace fixture box to a smaller 6”x9”x1” test head that can be mounted on a microscope for optical Fault localization methods such as Liquid Crystal, EMMI, OBRICH and other laser scanning techniques.
  • RTI OctoPogo© Extension Cable/Fixture:  This specialized cable assembly extends the Octopogo interface from the MultiTrace fixture box to a smaller 6”x9”x1” test head that can be mounted on a microscope for optical Fault localization methods such as Liquid Crystal, EMMI, OBRICH and other laser scanning techniques.  Variations of this cable have been used one ended as a breakout board for Octopogo DUT Boards which allows easier connection to external test equipment and Bias sources.
  • Custom DUT boards based on the above standard configurations:  Although most of the boards above have standards defining the size, type of test points and number of pins supported, there are variations that break these standards.  For example; adding a jumper matrix and removing the test points or supporting 100 pins by eliminating the ground connection are possible but it makes an R1 board into a “Custom R1 like board”. 
  • Custom Breakout Boards:  Breakout boards provide test point or jumper matrix access to all pins on a device package. These boards can have a variety of configurations and sizes but these are the most common variations but other configurations are also possible.
    • All pins connect to Banana Jacks or test points: Signal goes from test point then to pin on a single node.  No connector to any cable is provided This type is most useful for simple bench testing of continuity.
    • All pins connect to Banana Jacks or test points and a connector:  Signal goes from connector to test point then to pin on a single node.  May be used with cable and test equipment or as a hand test fixture.
    • All pins connect to 2 pin Jumpers: Signal goes from connector to one pin of the jumper, through the jumper then to the other pin of the jumper and then on to the DUT pin.  The jumper may be connected to and used as a test point or removed to isolate the pin from the connector. This type is useful when some pins interfere with measurements of other pins or where external passive loads need to be connected.  May be used with cable and test equipment or as a hand test fixture
    • All pins connected to 3 pin jumper: Signal goes from connector to center pin in a 3 row jumper array then on to the DUT pin.  A second pin leads to a ground plane and a third pin leads to a power plane.  A jumper completes the connection of the pin to the power plane or just the connector.  This type is useful for biasing pins to power and ground for live device bench testing.  May be used with cable and test equipment or as a hand test fixture