Keysight N2800A User Manual page 30

2
InfiniiMax III Probe Heads
Ensuring Maximum N2838A Tip Performance
The specifications and performance plots of the N2838A ZIF tip were measured
with a nominal spacing of 40 mil (1 mm). In order to achieve the proper response
as shown in the performance plots, keep the mini-axial lead resistors roughly
parallel as shown in
the desired span.
If you need to position the resistors different than shown in this figure (that is,
resistor bodies close together or spread apart), use Keysight's N2807A and
N2808A PrecisionProbe products to perform an AC calibration of the probe, which
properly captures the response. Increasing the spacing to 250 mil degrades the
performance some, but PrecisionProbe can be used to compensate or qualify the
effect.
Figure 22 Proper Position of Resistors
Soldering a ZIF Tip to the DUT
The ZIF tips are very fragile. They must be manufactured in this way in order to meet the
CAUTION
high-performance, high bandwidth applications they are intended for. Be extremely careful
when handling.
30
Figure 22, and use the tip wires on the mini-axial leads to get
InfiniiMax III Series Probes User's Guide