Performance Tests and Calibration 7
Agilent U1251A/U1252A User’s and Service Guide 129
Input Connections
Test connections to the instrument are best accomplished 
using the dual banana plug with copper wire short between 
the two terminals for low- thermal offset measurement. We 
recommend the use of shielded, twisted- pair, Teflon 
interconnect cables of minimum length between the 
calibrator and the multimeter. The cable shields should be 
earth ground referenced. This configuration is recommended 
to attain optimal noises and settling time performance 
during calibration.