Agilent Technologies 1168/9A User Manual page 90

2 Using Probe Heads
Using N2884A Fine-Wire ZIF tips
target well
ground well
90
want to probe, but you at least need two in order to have a
ground well and a target well. A small amount of tungsten
should be placed in the bottom of each well. The maximum
distance between wells is 600 microns.
Figure 57 Example of Trench and Two Wells Under Magnification
The two 22 micron wires on the Fine Wire ZIF tip are of
different lengths. The longer wire will be driven down first
to set the z- axis and then you will land the short wire. It
does not matter which wire goes into the ground well and
which goes into the target well, but it does matter that the
longer wire is set first.
chemically-etched
trench
1168/9A Probes User's Guide