Operation; Connecting The Probe To The Test Instrument; Connecting The Probe To The Test Circuit; Figure 2, Channel Setup Dialog With Ap033 Probe Dialog Behind It - Teledyne Lecroy AP033 Operator's Manual

AP033 Active Differential Probe

Operation

Connecting the Probe to the Test Instrument

Attach the probe output connector to the oscilloscope input connector. When used with
a Teledyne LeCroy oscilloscope equipped with ProBus inputs, the oscilloscope will
recognize the probe, set the input termination to 50 Ω, and activate the probe control
functions on the oscilloscope user interface. These appear on the AP033 dialog behind
the input channel setup dialog.
To use the AP033 Active Differential Probe with instrumentation not equipped with a
ProBus interface, it is necessary to use the ADPPS Power Supply. Attach the ADPPS
connector to the probe output connector. The output connector of the ADPPS is a
standard male BNC that can be directly connected to another instrument. If necessary,
the output of the ADPPS can be interconnected with a 50 Ω coaxial cable. To minimize the
effect of skin loss, this cable should be 1 m or less in length. The AP033 is designed to
drive a 50 Ω load. The gain will be uncalibrated if the output is not correctly terminated. If
you are using the probe with an instrument with a high input impedance, place a 50
instrument input before attaching the ADPPS..

Connecting the Probe to the Test Circuit

At the probe tip, two inputs and a ground connection are available for connecting the
probe to a circuit under test. For accurate measurements, both the + and – inputs must
always be connected to the test circuit. The ground connection is optional. Positive
voltages applied to the + input relative to the – input will deflect the oscilloscope trace
toward the top of the screen.
Positive voltages applied to the + input relative to the – input will deflect the oscilloscope
trace toward the top of the screen.
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1.800.561.8187
CAUTION: The input circuits in the AP033 incorporate components that protect
the probe from damage resulting from electrostatic discharge (ESD). Keep in
mind that this is an active probe, and it should be handled carefully to avoid
damage. When using the AP033, you are advised to take precautions against
potential instrument damage due to ESD.

Figure 2, channel setup dialog with AP033 probe dialog behind it.

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