Teledyne LeCroy WaveLink Differential Probe Series (8-13 GHz) - Manual (Page 25)

Operator's Manual
Tip Select
Make the appropriate selection by touching the Tip Select control and choosing the lead/tip you're
using. The dialog tab is labeled with the name of the corresponding tip you selected.
Select attached tip; the selection appears on the tab label.
It is crucial to make the tip selection on this field as it results in the amplifier and tip
combination having the response calibrated for at the factory. Failure to select the proper tip
may result in inaccurate measurements.
Connecting the Probe to the Test Circuit
For all amplifier modules and interconnect leads, positive voltages applied to the + input relative to
the – input deflects the oscilloscope trace towards the top of the screen.
Exercise care when connecting the probe to the test circuit to maintain the high frequency capability
of the probe in measurement applications. Increasing the parasitic capacitance or inductance in the
input path may introduce a ring, or slow the rise time of fast-rising signals. Any extension of the
signal path with extra wire leads, etc. adversely affects the probe's performance.
A ground connection is generally not required here. Refer to "Probe Grounding" on page 24 for
more details.
Solder-in Interconnect Lead
The solder-in lead for the amplifier module is supplied with two pre-installed resistors, which are
intended to be soldered to the runs or pad test points on the board under test. Because the resistors
and the leads are small, this interconnect lead provides the maximum signal fidelity at the highest
frequency response.
Follow these instructions to ensure optimal response for your SI lead.
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