
4 Test Head Filling and DUT Board Considerations Test System Configuration
78 System Reference, January 2001
Overview of Filling
The card cage filling options are listed in Figure 38.
Figure 39 Card Cage Filling Options from DUT board "view"
In the top two squares in Figure 39, the filling options
within the digital dominant type for the 512 pin and the
1024 pin SOC series tester are listed. In the bottom
squares you can find the analog dominant filling options.
The filling is of the following four kinds: A, D, a and d.
• A stands for analog filling in an entire group.
• D stands for digital filling in an entire group.
• a stands for analog filling (digitizers only) in a half
group only.
• d stands for digital filling in a half group only.
In extreme conditions, where very high pin counts (448
pins for 512 pin test head or 960 pins for 1024 pin test
head) are required a d-a split of analog-digital within a
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