Teledyne LeCroy WaveLink Differential Probe Series (8-13 GHz) - Manual (Page 27)

Operator's Manual
3. At this point, the leads can be bent out from their midpoints (making them parallel to each other).
4. Perform a final check to ensure proper lead spacing and compare them to the trace spacing on
the PCB.
P ROPER SI L EAD P OSITIONING
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.
NOTE:
l
The entire SI tip should be positioned with the resistor side upright facing (away from the PCB
plane).
l
Keep a 45 degree angle between the SI tip ends and the PCB plane.
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