
DUT Board Mechanical Considerations 4 Test Head Filling and DUT Board Considerations
System Reference, January 2001
65
Allocation on the 1024 pin DUT Board
See also drawing
D-E6980-96550-1S14D
In Figure 32 you can see which of the card cages of the
1024 pin test head match which of the groups on the 1024
pin DUT board. NOTE that the numbers of the groups have
nothing in common with the numbers of the card cages.
Figure 32 1. Allocation of the 1024 pin DUT board’s groups to the card cages
of the 1024 pin test head. 2. Numbering of pairs of pad blocks.
m
On the left side of Figure 32, for example, you can see that
group 7 matches with card cage 6. As previously men-
tioned, the smaller light boxes on the DUT board illustra-
tion are called half groups. Each half group contains four
pairs of so called pad blocks. A pad block is the landing
area of a pogo pin block on the DUT board’s pads. The
numbers in the illustrated half groups are each assigned to
one pair of pad blocks. For a description of a pair of pad
blocks see “Pad Blocks” on page 67. NOTE: Each pair of
pad blocks on the DUT board corresponds to a slot inside
a card cage. This is illustrated by the number of a slot next
to the number of the affiliated pair of pad blocks.
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