AWG G3 PAD FOR PS3 Dokumentacja Pobierz pdf (Strona 98)

4 Test Head Filling and DUT Board Considerations Test System Configuration

98 System Reference, January 2001

• DSC states when the DUT board is Disconnected and

when it has been taken off the test head. DSC has to be

routed to UGND.

The utility block ground pins (UGND) are isolated from

the system GND to avoid noise.

The four pad functions which are surrounded by a box in

Table 17 and Table 19, are connections for the High Preci-

sion Parametric Measurement Unit (HPMU). The func-

tions are as follows::

• PDCF is for the DC Force.

• PDCS is the DC Sense.

• PGDS is the Ground Sense.

• PGRD is the Gard line.

In Table 18 and Table 20 you can find the assignment of

which HPMU connects to which utility block.

NOTE These HPMU connections are optional. Even without

connecting the force line directly via a fixed wire with a

signal line on the DUT you can perform HPMU measure-

ments on any signal pin. This works by switching relays to

connect any signal line on the DUT with the HPMU. But

this way you don’t have any gard or sense lines.

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AWG G3 PAD FOR PS3 Dokumentacja Strona 98