2.
Depending on your connection method, connect the probe tip to the oscilloscope:
•
Oscilloscope Probe Compensator
1.
Connect the SMB end of the Oscilloscope Probe Compensator to the PFI
connector of the oscilloscope that generates the probe compensation signal.
2.
Connect the ground clip of the probe to the ground terminal.
3.
Contact the tip of the probe to the square wave terminal.
•
Direct connection to PFI
1.
Connect the SMB end of the SMB (f)-to-BNC (f) cable to the PFI connector of
the oscilloscope that generates the probe compensation signal.
2.
Attach the BNC adapter to the tip of the probe.
3.
Connect the probe tip via the BNC adapter to the BNC end of the cable.
3.
Enable the probe compensation signal:
Option
Description
InstrumentStudio
In the instrument header menu (
) in the upper-right corner of
the panel, select
Probe Compensation
»
Enabled
.
NI-SCOPE
Call Probe Compensation Signal Start.
4.
In InstrumentStudio, configure the settings of the input channel to which you connected
the probe.
a)
Set the channel to
On
to display the signal.
b)
Set the
Input impedance
of the channel to
1 MΩ
.
c)
Match the
Probe attenuation
setting to the setting on your probe.
5.
Adjust the vertical range on the input channel until the signal starts to clip and then
increase the vertical range by one step so that it no longer clips.
This process ensures you are using the maximum dynamic range of the ADC.
6.
Examine the digitized signal and adjust the tunable capacitor on the probe.
The probe is correctly compensated when the waveform appears as square as possible:
PXIe-5163 Getting Started Guide
|
© National Instruments
|
15
