Probes, Waverunner xi-a and mxi-a oscilloscopes – Teledyne LeCroy WaveRunner МXi-A Getting Started Manual User Manual
Page 20
WaveRunner Xi-A and MXi-A Oscilloscopes
12
922138-00 Rev A
Probes
Your WaveRunner Xi oscilloscope is supplied with one passive probe for each
channel. The supplied passive probe has a high-input resistance and low
capacitance make it ideal for general purpose probing of signals with
frequency content from DC through several hundred MHz. The supplied
passive probe has a large selection of connection accessories, supplied
standard with the probe and available from Teledyne LeCroy as optional
accessories.
Teledyne LeCroy also offers a variety of passive and active probes for use with
your WaveRunner Xi Series oscilloscope. Visi
for
specifications and ordering information.
Current
Probes
Current Probes measure the current passing through a wire. They do
not use the traditional probing style of placing a tip onto a test point.
Instead, a wire is placed inside of the jaw of the probe, which then
allows the probe to measure the current (in Amps).
Active
Probes
There are two different types of active probes: single-ended and
differential.
Single-ended: A single-ended active probe is associated with
measuring voltages at high frequencies. Measurement with an active
probe requires a test point and a ground point. The ground (also
called earth) acts as a zero reference for the test point measurement.
Differential: Differential active probes are like two probes in one.
Instead of measuring a test point in relation to a ground point (like
single-ended active probes), differential probes measure the
difference in voltage of a test point in relation to another test point.
Passive
Probes
Passive probes measure voltages at lower frequencies (<400 MHz).
They have higher input capacitance (input C) and do not need power
to operate (unlike active probes). At higher frequencies, higher input
capacitance loads the test circuit, attenuating the signal. This is why
active probes are used in high frequency applications. Passive probes
also measure voltage in reference to ground.
High
Voltage
Probes
These are active single ended probes that are designed to measure
high voltages (safely). They measure the voltage in reference to
ground.