Hioki PW3335 - 2.5 Performing Zero-adjustment

2.2 Connecting the Measurement Lines
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Method 1
Method 2
You can connect the instrument’s current input terminals to the measurement line’s L side (Hi
side) as shown in the figure below and perform measurement using either Method 1 (connect-
ing the current input terminals to the load side) or Method 2 (connecting the voltage input termi-
nals to the load side), but these setups are susceptible to the effects of common-mode voltage.
To reduce the effects of common-mode voltage, it is recommended to connect the current input
terminals to the measurement line’s N side (Lo side).
Source Load Source Load
Voltage input
terminal
Current input
terminal
Source Load Source Load
Voltage input
terminal
Current input
terminal
Input resistance
Input resistance
Input resistance
Input resistance