External Probe Configuration
To configure an external current probe:
1.
Connect to the channel's external current probe input, shown below.
2. Press [1] or [2] (or [3] or [4] on the PA2203A) to open the channel menu. Then press Current
Input.
3. Press Current Ratio and specify the current probe output ratio in V/A.
4. Press Current Offset and specify the current probe offset in Amps.
5. Press [Back]>Ranging>Ranging Mode and choose Fixed or Automatic ranging. Note that
Automatic ranging choose a range such that the signal occupies approximately half the
vertical height of the signal on the display.
6. If you are using Fixed ranging, press Current Range and choose a measurement range.
7. The Ext Curr HV softkey will become available when the channel is AC coupled and
measuring on a low, fixed range. If most of your signal is near the top of the range, you can
enable these softkeys to improve measurement resolution.
The instrument achieves this result by inserting an attenuation resistor into the signal path
and spreading the information content over more bits of the analog-to-digital converter. In
the example below, enabling HV reveals the noise on the sine wave.
Note that when you calculate measurement uncertainty, you should refer to the probe's
datasheet and add the probe's uncertainty to the measurement uncertainty of the power
analyzer.
42 Keysight IntegraVision PA2200 Series Power Analyzers Operating and Service Guide
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