Keysight B1500A Configuration and Connection Guide, Edition 6 3-19Connection Guide for Wafer ProberWGFMU and RSU3.5 WGFMU and RSUThis section covers the instructions to make connection between WGFMU and RF/DCprobes. Before starting the instructions, complete the installation of the B1500A installedwith the WGFMU. See Keysight B1500 manual.NOTE About WGFMU module installationModule installation of WGFMU must be performed by Keysight Technologies servicepersonnel. Contact Keysight Technologies for the module installation.NOTE RSU has SMA terminal which is coaxial connection. In this connection, ultra low currentmeasurement can not be performed.3.5.1 Connecting RSUPrepare the required accessories and connect cables between RSU and WGFMU or SMU.See Figure 3-19 for a connection example. This example connects two RSUs.Figure 3-19 RSU Connection ExampleRequired accessories:• WGFMU-to-RSU cable (D-sub), 1ea. per one RSU1.5 m, 3 m, or 5 m cable (furnished with WGFMU module. If another length isrequired, order 16493R-006, 003 or 004)The 16493R-801 adapter is required and mounted on a shielding box to makeconnection to the RSU in the shielding box. Then the 60 cm and 2.4 m cables(16493R-001 and 005) are required instead of the 1.5m, 3 m, or 5 m cable.• Sync connection cable (furnished with WGFMU module), 1 ea. between twoWGFMUsMPSMUTriaxial cableSemseForceB1500AMPSMUSenseForceWGFMUChannel 2Channel 1 SMU 2WGFMU 2Output 2WGFMU cableSMU 1WGFMU 1Output 1Triaxial cableWGFMU cable DUTGDSubsSRSURSUSMASMA