Performance Verification Test Record - LeCroy

PROPER SI LEAD POSITIONING
WaveLink Series Differential Probe (13-25 GHz)
When wires are attached to a probe’s tips or leads to make probing of the circuit under test
easier to perform, additional inductance and/or capacitance is added to the input, lowering the
resonance frequency of a series resonance circuit, which may cause oscillations with frequencies
within the passband of the probe. These effects, or excessive ringing, degrade the performance
of the probe, resulting in incorrect presentation of the input signal, reduced bandwidth, and
changes in loading impedance.
PLEASE NOTE THE FOLLOWING:
Figure 4-7. Measuring with SI Interconnect Lead
� The entire SI tip should be positioned with the resistor side upright facing (away from the
PCB plane).
� Keep a 45 degree angle between the SI tip ends and the PCB plane.
Positioner Tip Browser (Dxx05-PT)
The Dxx05-PT positioner tips have a very small form factor with very low mass. They are a good
all-around browsing or mounted solution for probing in areas with a high concentration of test
points or limited free space to fit a probe.
WL-HBW-OM-E RevC 32