3
Overview
30
N7040A/1A/2A Rogowski AC Current Probes User Guide
•
N7040A.................... 0.002 V/A (500:1)
•
N7041A.....................0.01 V/A (100:1)
•
N7042A.................... 0.02 V/A (50:1)
In the example below, the 0.02 V/A has been selected for the N7042A probe.
On identifying the probe type, the current probe is now displayed in the Probe configuration
dialog box.
5 Configure the scope channel settings to which the current probe is attached. To do so, access the
Channel
dialog box by clicking
Setup
>
Channel <N>
option from the menu on the top.
6 In the Channel dialog box, confirm that the following settings are configured correctly for the
channel.
• The Vertical scale unit of the oscilloscope should be set to
Amps
. In the
Scale
field, select the
desired Amps per division scale for a waveform.
• The
Input Impedance
of the oscilloscope channel must be set to
1 M
Ω
to make accurate
measurements.
• Set the oscilloscope’s
Input Coupling
to
AC
to remove any DC offset voltage from the waveform.
These settings are highlighted in the following screen.