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4 Test Head Filling and DUT Board Considerations DUT Board Mechanical Considerations

68 System Reference, January 2001

column is currently not in use for digital measurement.

You can find the number of a column below and above the

pair of blocks in Figure 33.

Numbering of pads:

To refer to one of the signal pads on a pad block, the

number of the pair of pad blocks is followed by the

number of the column which contains the pad. For

example: The crossed pad (column No. 4) of the upper pad

block would be 22804 as this pair of blocks is pair No.228.

The first integer of the number of the pair of pad blocks is

either 1 or 2. The next two integer numbers go from 1 to

32 inclusive. For the numbering of the pad blocks see

Figure 31 on page 64and Figure 32 on page 65.

See also drawing

D-E6980-96540-1S34D

(512 pins) and

D-E6980-96550-1S34D

(1024 pins)

Which pad block of the pair to use:

• If you are using a digital board in the corresponding

slot of the pad block pair on the test head, all pogo pins

of the same board only connect to pad blocks which are

labelled D (for Digital) or synonymously S1 (see

Figure 34). Pad blocks labelled S2 within groups that

can exclusively contain digital boards are presently not

in use.

• If you are using an analog board in the corresponding

slot of the pad block pair within the test head, all pogo

pins of the same board only connect to pad blocks

labelled A (for Analog) or S2 (see Figure 34).

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AWG G3 PAD FOR PS3 Spezifikationen Seite 68