Series 2280 Precision DC Power Supply Reference Manual  Section 2: General operation 
077085503 / March 2019  2-41 
 
 
To reduce the environmental noise, load wires and sense wires must be twisted. For more 
information, refer to the following figure. 
Figure 26: Four-wire connection with twisted-pair wires 
 
Make sure you make the connections correctly. Incorrect connections between output and 
sense terminals will result in a serious error and may damage the device under test (DUT). 
For more information, see Open leads detection (on page 2-42) and Reverse sense leads (on 
page 2-43).