Chapter 3 55
Agilent 4072/4073 Preinstallation Guide, Edition 4
Wafer Probers and Connection with Testhead
Connecting with Testhead
Pin board configuration
Table 3-1 lists the order in which pin boards are installed in the testhead slots. In the following tables, “A.I.”
indicates the pin boards that are always installed in that slot. These are the 12 pin boards that come with the
standard system.
If you order additional pin boards, the factory installs the pin boards in the order shown by the numbers in the “Pin
Board Installment Order” columns. The customer will need to know this slot information when wiring the
personality board or the extension cable fixture.
Table 3-2 is an example of where pin boards are installed when additional pin boards are ordered.
NOTE Agilent Technologies recommends that you do not change the pin boards from the slots in which
they are installed at the factory.
When the 4072/4073 tester diagnostic program (diag4070) is executed, at least 12 pin boards must
be installed in designated slots in the testhead. The designated slots are shown in the pin board
configuration table.
The pin board installation is also designed to allow for balancing weight and capacitance in the
testhead. If the pin boards are not installed as recommended, stray capacitance between any two
pins can be off-balance, as well as the testhead weight.
To balance the weight and capacitance between pins in the testhead, the pin boards are not
installed in consecutive order for systems that do not use all 48 slots.
Table 3-1 Pin board configurations for 4072/4073 tester
Slot
no.
Pin board
installment
order
Slot
no.
Pin board
installment
order
Slot
no.
Pin board
installment
order
Slot
no.
Pin board
installment
order
1 13132525313719
2 1 14 4 26 7 38 10
3 14152627323920
4 A.I. 16 A.I. 28 A.I. 40 A.I.
5 15172729334121
621853084211
7 16192831344322
8 A.I. 20 A.I. 32 A.I. 44 A.I.
9 17212933354523
1032263494612
11 18 23 30 35 36 47 24
12 A.I. 24 A.I. 36 A.I. 48 A.I.
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