Keysight B1505A Configuration and Connection Guide 5-23Connection Guide for Wafer Prober and Your Own Test FixtureTo Connect Protection AdapterTo Connect Protection AdapterKeysight N1261A protection adapter is used to protect GNDU or HP/MPSMU modulefrom high voltage. The N1261A should be installed near your DUT interface as shown inTable 5-1 on page 5-5.The N1261A-001 is also used for the measurement using the N1265A test fixture. It mustbe connected between the HP/MPSMU and the N1265A SMU input. Then use four16494A triaxial cables for Kelvin connection or two 16494A cables for non-Kelvinconnection. Recommended cable length is 1.5 m. Ignore Table 5-17.N1261A-001: HPSMU protection adapter, Triaxial(f)-Triaxial(f)N1261A-002: GNDU protection adapter, Triaxial(f)-BNC(f)N1261A-003: HPSMU protection adapter, Triaxial(f)-HV(jack)N1261A-004: GNDU protection adapter, Triaxial(f)-SHV(jack)Table 5-16 To Connect N1261A InputNOTE For connecting HP/MPSMU, use either 16494A or 16493K. But the 16493K cannot beused for connecting the N1265A.B1505A terminals Required cables N1261A terminalsHPSMUorMPSMUForce 16494A Triaxial cable, 3 m or 1.5 m, 1 ea., for the non-Kelvinconnection, connect it between the Force connectors.For the Kelvin connection, prepare additional one more cable andconnect it between the Sense connectors. Or use 16493K Kelvintriaxial cable instead of 16494A.FromHPSMUForceSense SenseGNDU 16493L GNDU cable, 3 m or 1.5 m From GNDUN 1261A O p t 001H P S M U P rotection A dapterF orceS enseF romH P S M U O utputGuardS ense/F orceC ircuitC om m on!F orce㼼2 0 0 V m a x䞉䞉䞉䞉S ense㼼2 0 0 V m a x䞉䞉䞉䞉A gilentInp utP e a k 㼼3 k V = m a xN 1261A O p t 001H P S M U P rotection A dapterF orceS enseF romH P S M U O utputGuardS ense/F orceC ircuitC om m on!GuardS ense/F orceC ircuitC om m on!!F orce㼼2 0 0 V m a x䞉䞉䞉䞉F orce㼼2 0 0 V m a x䞉䞉䞉䞉㼼2 0 0 V m a x䞉䞉䞉䞉䞉䞉䞉䞉S ense㼼2 0 0 V m a x䞉䞉䞉䞉S ense㼼2 0 0 V m a x䞉䞉䞉䞉㼼2 0 0 V m a x䞉䞉䞉䞉䞉䞉䞉䞉A gilentInp utP e a k 㼼3 k V = m a xN 1261A O p t 002G N D U P rotection A dapterF rom G N D U O utputF orceS enseA gilentForceS enseC ircuitC om m onS ense/F orceC ircuitC om m on㼼40 V m ax䞉䞉䞉Inp utP e a k 3 k V = m a xN 1261A O p t 002G N D U P rotection A dapterF rom G N D U O utputF orceS enseA gilentForceS enseC ircuitC om m onForceS enseC ircuitC om m onS ense/F orceC ircuitC om m onS ense/F orceC ircuitC om m on㼼40 V m ax䞉䞉䞉㼼40 V m ax䞉䞉䞉䞉䞉䞉Inp utP e a k 3 k V = m a x
