For example: Agilent E4440A or Anritsu 68369
California Instruments Plug In / Part / Component / Module
California Instruments 800T-20/20K
800T-20/20K Oscillator Plug-In
Manufacturer: California Instruments
California Instruments 800T-3-1578
800T-3-1578 Variable Plug-In Oscillator
Manufacturer: California Instruments
California Instruments 800T-40/5K-3
800T-40/5K-3 Variable Oscillator Plug-In
Manufacturer: California Instruments
California Instruments 800T-45/500-3
800T-45/500-3 Oscillator Plug-In
Manufacturer: California Instruments
California Instruments 800T-45/75-1
800T-45/75-1 Oscillator Plug-In
Manufacturer: California Instruments
California Instruments 815T-400-1
815T-400-1 Oscillator Plug-In
Manufacturer: California Instruments
California Instruments 815T-60HZ-10
815T-60HZ-10 Oscillator Plug-In
Manufacturer: California Instruments
California Instruments 845T
845T Programmable Oscillator Plug-In
Manufacturer: California Instruments
California Instruments 847T
847T Programmable Oscillator Plug-In
Manufacturer: California Instruments
California Instruments 848TCM
848TCM Programmable Oscillator Plug-In
Manufacturer: California Instruments
California Instruments 948XP
948XP Programmable Oscillator Plug-In
Manufacturer: California Instruments