Minimizing Cable and Interconnect Inductance

To obtain the best performance while ensuring system stability, minimize the inductance in, and length of, the cables and interconnects between your source or DUT and the electronic load.

Note NI recommends tuning your system for stability at the highest intended current for the current test or operation.

If long cabling and high inductance are inherent to your setup, stabilize the system by altering the Transient Response property in the following ways:

  • Select the gain-bandwidth setting as slow.
  • Use the custom setting to reduce the bandwidth and compensate for long cables.

Compensating for long cabling means allowing lower bandwidth and dynamic performance for the electronic load in exchange for system stability, reduced ringing, and overshoot. The ability to customize system gain-bandwidth gives you the flexibility to determine the right balance of performance and stability for your system.

Figure 9. Ringing and overshoot effects due to long cabling or high inductance


Figure 10. Ringing due to long cables compensated with gain-bandwidth adjustments