Keysight N2800A User Manual page 36

2
InfiniiMax III Probe Heads
Ensuring Maximum Performance
The specifications and performance plots of the N2836A probe head 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
leads to get the desired span.
Figure 32 N2836A With 1 mm Tip Spacing
If you need to position the mini-axial lead resistors different than shown in this figure (that
is, resistor bodies close together or spread way apart), use Keysight's N2807A and N2808A
PrecisionProbe products to perform an AC calibration of the probe. The AC calibration will
capture the response properly. Increasing the spacing to 250 mil will degrade the
performance some, but Precision Probe can be used to compensate or qualify the effect.
The axial resistors on the N2836A solder-in probe head are fragile. They must be
CAUTION
manufactured in this way in order to meet the high-performance, high bandwidth applications
they are intended for. Be careful when handling.
Soldering the Probe Head to the DUT
To solder the probe head to your DUT, complete the following steps. The procedure is very
similar to that for the ZIF probe tips used with the N5439A probe head. This procedure
does not show soldering the ground leads, but the same techniques are used.
1 Apply flux to your target leads as shown in
Figure 33 Applying Flux
2 Tin the leads with a small amount of solder.
36
Figure 32, and use the tip wires on the mini-axial
Figure 33.
InfiniiMax III Series Probes User's Guide