User manual

WaveSurfer 3000/3000z Oscilloscopes Operator's Manual
Adjust and Intensity Controls
The Adjust knob changes the value in any highlighted data entry field when turned. Pushing the Adjust
knob toggles between coarse (large increment) or fine (small increment) adjustments.
When more data is available than can actually be displayed, the Intensity button helps to visualize
significant events by applying an algorithm that dims less frequently occurring samples. This feature can
also be accessed from the Display Setup dialog.
Signal Interfaces
MAUI instruments offer a variety of interfaces for using probes or other devices to input analog or digital
signals. See the oscilloscope product page at teledynelecroy.com for a list of compatible input devices.
Analog Inputs
A series of connectors arranged on the front of the instrument are used to input analog signals on
channels 1-4. EXT on the back can be used to input an external trigger pulse.
WaveSurfer channel connectors use the ProBus interface. The ProBus interface incorporates a 6-pin
power and communication connection and a BNC signal connection to the probe. It includes sense rings
for detecting passive probes and accepts a BNC cable connected directly to it. ProBus offers 50 Ω and 1
MΩ input impedance and control for a wide range of probes.
The channel interfaces power probes and completely integrate the probe with the channel. Upon
connecting a Teledyne LeCroy probe, the probe type is recognized and some setup information, such as
input coupling and attenuation, is performed automatically. This information is displayed on the Probe
Dialog, behind the Channel (Cn) dialog. System (probe plus instrument) gain settings are automatically
calculated and displayed based on the probe attenuation.
Probes
The oscilloscope is compatible with the included passive probes and most Teledyne LeCroy active probes
that are rated for the instrument’s bandwidth. Probe specifications and documentation are available at
teledynelecroy.com/probes.
Passive Probes
The passive probes supplied are matched to the input impedance of the instrument but may need further
compensation. Follow the directions in the probe instruction manual to compensate the frequency
response of the probes.
Active Probes
Teledyne LeCroy offers a variety of active probes for use with your oscilloscope:
l Single-Ended active probes can measure voltages at high frequencies. Use of 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.
l Differential Probes are like two probes in one. Instead of measuring a test point in relation to a ground
point, differential probes measure the difference in voltage of two test points.
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