For example: Agilent E4440A or Anritsu 68369
Plug In / Part / Component / Module
Keysight / Agilent 70320A
RF Signal Generator Module, 252 Hz - 1030 MHz
Manufacturer: Keysight / Agilent
Keysight / Agilent 70322A
100 kHz to 4.2 GHz Synthesized Signal Generator Module
Manufacturer: Keysight / Agilent
Keysight / Agilent 70341A
Frequency Extension Module,10 MHz to 1 GHz
Manufacturer: Keysight / Agilent
Keysight / Agilent 70700A
Digitizer Rate 20 Msamples/sec Plugin for 70000 series
Manufacturer: Keysight / Agilent