Keysight offers multiple interface options for the E4980AL.

• E4980AL-201 - Adds handler interface with 9 BIN outputs
• E4980AL-301 - Adds scanner interface with 128 multi-channel core
• E4980AL-710 - No Interface; Attaches blank panel to the expansion slots

There are two interface slots on the rear panel. When neither the E4980AL-201 nor the E4980AL-301 is selected, two of the E4980AL-710 are selected. When either of them is selected, an E4980AL-710 is selected.

The E4980AL offers an optically-isolated 9-BIN handler (Option 201) for integration into handler systems. A 128-channel scanner interface (Option 301) facilitates applications requiring a component scanner. Both interfaces have standard compatibility with other LCR system instruments (e.g. 4284A/88A/78A, etc.) for easy integration into systems. The multi-compensation function enables open/short/load compensations to perform scanning measurements independently in each scanner channel. This minimizes inconsistency in measured values between channels for more accurate measurements throughout the scanner system.

Please note, the images below detail two options. 201 is on the left, 301 is on the right.